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1 | 8977f3c1 | bellard | /*
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2 | 8977f3c1 | bellard | * QEMU Floppy disk emulator
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3 | 8977f3c1 | bellard | *
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4 | 8977f3c1 | bellard | * Copyright (c) 2003 Jocelyn Mayer
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5 | 8977f3c1 | bellard | *
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6 | 8977f3c1 | bellard | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | 8977f3c1 | bellard | * of this software and associated documentation files (the "Software"), to deal
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8 | 8977f3c1 | bellard | * in the Software without restriction, including without limitation the rights
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9 | 8977f3c1 | bellard | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | 8977f3c1 | bellard | * copies of the Software, and to permit persons to whom the Software is
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11 | 8977f3c1 | bellard | * furnished to do so, subject to the following conditions:
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12 | 8977f3c1 | bellard | *
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13 | 8977f3c1 | bellard | * The above copyright notice and this permission notice shall be included in
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14 | 8977f3c1 | bellard | * all copies or substantial portions of the Software.
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15 | 8977f3c1 | bellard | *
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16 | 8977f3c1 | bellard | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | 8977f3c1 | bellard | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | 8977f3c1 | bellard | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | 8977f3c1 | bellard | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | 8977f3c1 | bellard | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | 8977f3c1 | bellard | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | 8977f3c1 | bellard | * THE SOFTWARE.
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23 | 8977f3c1 | bellard | */
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24 | 8977f3c1 | bellard | #include <stdio.h> |
25 | 8977f3c1 | bellard | #include <stdlib.h> |
26 | 8977f3c1 | bellard | #include <string.h> |
27 | 8977f3c1 | bellard | #include <inttypes.h> |
28 | 8977f3c1 | bellard | |
29 | 8977f3c1 | bellard | #include "vl.h" |
30 | 8977f3c1 | bellard | |
31 | 8977f3c1 | bellard | /********************************************************/
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32 | 8977f3c1 | bellard | /* debug Floppy devices */
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33 | 8977f3c1 | bellard | //#define DEBUG_FLOPPY
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34 | 8977f3c1 | bellard | |
35 | 8977f3c1 | bellard | #ifdef DEBUG_FLOPPY
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36 | 8977f3c1 | bellard | #define FLOPPY_DPRINTF(fmt, args...) \
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37 | 8977f3c1 | bellard | do { printf("FLOPPY: " fmt , ##args); } while (0) |
38 | 8977f3c1 | bellard | #else
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39 | 8977f3c1 | bellard | #define FLOPPY_DPRINTF(fmt, args...)
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40 | 8977f3c1 | bellard | #endif
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41 | 8977f3c1 | bellard | |
42 | 8977f3c1 | bellard | #define FLOPPY_ERROR(fmt, args...) \
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43 | 8977f3c1 | bellard | do { printf("FLOPPY ERROR: %s: " fmt, __func__ , ##args); } while (0) |
44 | 8977f3c1 | bellard | |
45 | 8977f3c1 | bellard | /********************************************************/
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46 | 8977f3c1 | bellard | /* Floppy drive emulation */
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47 | 8977f3c1 | bellard | |
48 | 8977f3c1 | bellard | /* Will always be a fixed parameter for us */
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49 | 8977f3c1 | bellard | #define FD_SECTOR_LEN 512 |
50 | 8977f3c1 | bellard | #define FD_SECTOR_SC 2 /* Sector size code */ |
51 | 8977f3c1 | bellard | |
52 | 8977f3c1 | bellard | /* Floppy disk drive emulation */
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53 | 8977f3c1 | bellard | typedef enum fdisk_type_t { |
54 | 8977f3c1 | bellard | FDRIVE_DISK_288 = 0x01, /* 2.88 MB disk */ |
55 | 8977f3c1 | bellard | FDRIVE_DISK_144 = 0x02, /* 1.44 MB disk */ |
56 | 8977f3c1 | bellard | FDRIVE_DISK_720 = 0x03, /* 720 kB disk */ |
57 | baca51fa | bellard | FDRIVE_DISK_USER = 0x04, /* User defined geometry */ |
58 | baca51fa | bellard | FDRIVE_DISK_NONE = 0x05, /* No disk */ |
59 | 8977f3c1 | bellard | } fdisk_type_t; |
60 | 8977f3c1 | bellard | |
61 | 8977f3c1 | bellard | typedef enum fdrive_type_t { |
62 | 8977f3c1 | bellard | FDRIVE_DRV_144 = 0x00, /* 1.44 MB 3"5 drive */ |
63 | 8977f3c1 | bellard | FDRIVE_DRV_288 = 0x01, /* 2.88 MB 3"5 drive */ |
64 | 8977f3c1 | bellard | FDRIVE_DRV_120 = 0x02, /* 1.2 MB 5"25 drive */ |
65 | 8977f3c1 | bellard | FDRIVE_DRV_NONE = 0x03, /* No drive connected */ |
66 | 8977f3c1 | bellard | } fdrive_type_t; |
67 | 8977f3c1 | bellard | |
68 | baca51fa | bellard | typedef enum fdrive_flags_t { |
69 | baca51fa | bellard | FDRIVE_MOTOR_ON = 0x01, /* motor on/off */ |
70 | baca51fa | bellard | FDRIVE_REVALIDATE = 0x02, /* Revalidated */ |
71 | baca51fa | bellard | } fdrive_flags_t; |
72 | baca51fa | bellard | |
73 | baca51fa | bellard | typedef enum fdisk_flags_t { |
74 | baca51fa | bellard | FDISK_DBL_SIDES = 0x01,
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75 | baca51fa | bellard | } fdisk_flags_t; |
76 | baca51fa | bellard | |
77 | 8977f3c1 | bellard | typedef struct fdrive_t { |
78 | 8977f3c1 | bellard | BlockDriverState *bs; |
79 | 8977f3c1 | bellard | /* Drive status */
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80 | 8977f3c1 | bellard | fdrive_type_t drive; |
81 | baca51fa | bellard | fdrive_flags_t drflags; |
82 | 8977f3c1 | bellard | uint8_t perpendicular; /* 2.88 MB access mode */
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83 | 8977f3c1 | bellard | /* Position */
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84 | 8977f3c1 | bellard | uint8_t head; |
85 | 8977f3c1 | bellard | uint8_t track; |
86 | 8977f3c1 | bellard | uint8_t sect; |
87 | 8977f3c1 | bellard | /* Last operation status */
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88 | 8977f3c1 | bellard | uint8_t dir; /* Direction */
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89 | 8977f3c1 | bellard | uint8_t rw; /* Read/write */
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90 | 8977f3c1 | bellard | /* Media */
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91 | 8977f3c1 | bellard | fdisk_type_t disk; /* Disk type */
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92 | baca51fa | bellard | fdisk_flags_t flags; |
93 | 8977f3c1 | bellard | uint8_t last_sect; /* Nb sector per track */
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94 | 8977f3c1 | bellard | uint8_t max_track; /* Nb of tracks */
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95 | baca51fa | bellard | uint16_t bps; /* Bytes per sector */
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96 | 8977f3c1 | bellard | uint8_t ro; /* Is read-only */
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97 | 8977f3c1 | bellard | } fdrive_t; |
98 | 8977f3c1 | bellard | |
99 | caed8802 | bellard | static void fd_init (fdrive_t *drv, BlockDriverState *bs) |
100 | 8977f3c1 | bellard | { |
101 | 8977f3c1 | bellard | /* Drive */
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102 | caed8802 | bellard | drv->bs = bs; |
103 | caed8802 | bellard | if (bs)
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104 | caed8802 | bellard | drv->drive = FDRIVE_DRV_144; |
105 | caed8802 | bellard | else
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106 | caed8802 | bellard | drv->drive = FDRIVE_DRV_NONE; |
107 | baca51fa | bellard | drv->drflags = 0;
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108 | 8977f3c1 | bellard | drv->perpendicular = 0;
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109 | 8977f3c1 | bellard | /* Disk */
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110 | 8977f3c1 | bellard | drv->disk = FDRIVE_DISK_NONE; |
111 | baca51fa | bellard | drv->last_sect = 0;
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112 | 8977f3c1 | bellard | drv->max_track = 0;
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113 | 8977f3c1 | bellard | } |
114 | 8977f3c1 | bellard | |
115 | 8977f3c1 | bellard | static int _fd_sector (uint8_t head, uint8_t track, |
116 | 8977f3c1 | bellard | uint8_t sect, uint8_t last_sect) |
117 | 8977f3c1 | bellard | { |
118 | 8977f3c1 | bellard | return (((track * 2) + head) * last_sect) + sect - 1; |
119 | 8977f3c1 | bellard | } |
120 | 8977f3c1 | bellard | |
121 | 8977f3c1 | bellard | /* Returns current position, in sectors, for given drive */
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122 | 8977f3c1 | bellard | static int fd_sector (fdrive_t *drv) |
123 | 8977f3c1 | bellard | { |
124 | 8977f3c1 | bellard | return _fd_sector(drv->head, drv->track, drv->sect, drv->last_sect);
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125 | 8977f3c1 | bellard | } |
126 | 8977f3c1 | bellard | |
127 | 8977f3c1 | bellard | static int fd_seek (fdrive_t *drv, uint8_t head, uint8_t track, uint8_t sect, |
128 | 8977f3c1 | bellard | int enable_seek)
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129 | 8977f3c1 | bellard | { |
130 | 8977f3c1 | bellard | uint32_t sector; |
131 | baca51fa | bellard | int ret;
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132 | baca51fa | bellard | |
133 | baca51fa | bellard | if (track > drv->max_track ||
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134 | baca51fa | bellard | (head != 0 && (drv->flags & FDISK_DBL_SIDES) == 0)) { |
135 | baca51fa | bellard | FLOPPY_ERROR("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
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136 | baca51fa | bellard | head, track, sect, 1,
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137 | baca51fa | bellard | (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1, |
138 | baca51fa | bellard | drv->max_track, drv->last_sect); |
139 | 8977f3c1 | bellard | return 2; |
140 | 8977f3c1 | bellard | } |
141 | 8977f3c1 | bellard | if (sect > drv->last_sect) {
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142 | baca51fa | bellard | FLOPPY_ERROR("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
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143 | baca51fa | bellard | head, track, sect, 1,
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144 | baca51fa | bellard | (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1, |
145 | baca51fa | bellard | drv->max_track, drv->last_sect); |
146 | 8977f3c1 | bellard | return 3; |
147 | 8977f3c1 | bellard | } |
148 | 8977f3c1 | bellard | sector = _fd_sector(head, track, sect, drv->last_sect); |
149 | baca51fa | bellard | ret = 0;
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150 | 8977f3c1 | bellard | if (sector != fd_sector(drv)) {
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151 | 8977f3c1 | bellard | #if 0
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152 | 8977f3c1 | bellard | if (!enable_seek) {
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153 | 8977f3c1 | bellard | FLOPPY_ERROR("no implicit seek %d %02x %02x (max=%d %02x %02x)\n",
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154 | 8977f3c1 | bellard | head, track, sect, 1, drv->max_track, drv->last_sect);
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155 | 8977f3c1 | bellard | return 4;
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156 | 8977f3c1 | bellard | }
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157 | 8977f3c1 | bellard | #endif
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158 | 8977f3c1 | bellard | drv->head = head; |
159 | baca51fa | bellard | if (drv->track != track)
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160 | baca51fa | bellard | ret = 1;
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161 | 8977f3c1 | bellard | drv->track = track; |
162 | 8977f3c1 | bellard | drv->sect = sect; |
163 | 8977f3c1 | bellard | } |
164 | 8977f3c1 | bellard | |
165 | baca51fa | bellard | return ret;
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166 | 8977f3c1 | bellard | } |
167 | 8977f3c1 | bellard | |
168 | 8977f3c1 | bellard | /* Set drive back to track 0 */
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169 | 8977f3c1 | bellard | static void fd_recalibrate (fdrive_t *drv) |
170 | 8977f3c1 | bellard | { |
171 | 8977f3c1 | bellard | FLOPPY_DPRINTF("recalibrate\n");
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172 | 8977f3c1 | bellard | drv->head = 0;
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173 | 8977f3c1 | bellard | drv->track = 0;
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174 | 8977f3c1 | bellard | drv->sect = 1;
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175 | 8977f3c1 | bellard | drv->dir = 1;
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176 | 8977f3c1 | bellard | drv->rw = 0;
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177 | 8977f3c1 | bellard | } |
178 | 8977f3c1 | bellard | |
179 | 8977f3c1 | bellard | /* Revalidate a disk drive after a disk change */
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180 | caed8802 | bellard | static void fd_revalidate (fdrive_t *drv) |
181 | 8977f3c1 | bellard | { |
182 | 8977f3c1 | bellard | int64_t nb_sectors; |
183 | baca51fa | bellard | int nb_heads, max_track, last_sect, ro;
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184 | 8977f3c1 | bellard | |
185 | 8977f3c1 | bellard | FLOPPY_DPRINTF("revalidate\n");
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186 | baca51fa | bellard | drv->drflags &= ~FDRIVE_REVALIDATE; |
187 | baca51fa | bellard | |
188 | caed8802 | bellard | /* if no drive present, cannot do more */
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189 | caed8802 | bellard | if (!drv->bs)
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190 | caed8802 | bellard | return;
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191 | baca51fa | bellard | |
192 | caed8802 | bellard | if (bdrv_is_inserted(drv->bs)) {
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193 | baca51fa | bellard | ro = bdrv_is_read_only(drv->bs); |
194 | baca51fa | bellard | bdrv_get_geometry_hint(drv->bs, &max_track, &nb_heads, &last_sect); |
195 | baca51fa | bellard | if (nb_heads != 0 && max_track != 0 && last_sect != 0) { |
196 | baca51fa | bellard | drv->disk = FDRIVE_DISK_USER; |
197 | baca51fa | bellard | printf("User defined disk (%d %d %d)",
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198 | baca51fa | bellard | nb_heads - 1, max_track, last_sect);
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199 | baca51fa | bellard | if (nb_heads == 1) { |
200 | baca51fa | bellard | drv->flags &= ~FDISK_DBL_SIDES; |
201 | baca51fa | bellard | } else {
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202 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
203 | baca51fa | bellard | } |
204 | baca51fa | bellard | drv->max_track = max_track; |
205 | baca51fa | bellard | drv->last_sect = last_sect; |
206 | baca51fa | bellard | } else {
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207 | 8977f3c1 | bellard | bdrv_get_geometry(drv->bs, &nb_sectors); |
208 | baca51fa | bellard | switch (nb_sectors) {
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209 | baca51fa | bellard | /* 2.88 MB 3"1/2 drive disks */
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210 | baca51fa | bellard | case 7680: |
211 | baca51fa | bellard | printf("3.84 Mb 3\"1/2 disk (1 80 48)");
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212 | baca51fa | bellard | drv->drive = FDRIVE_DRV_288; |
213 | baca51fa | bellard | drv->disk = FDRIVE_DISK_288; |
214 | baca51fa | bellard | drv->last_sect = 48;
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215 | baca51fa | bellard | drv->max_track = 80;
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216 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
217 | baca51fa | bellard | break;
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218 | baca51fa | bellard | case 7040: |
219 | baca51fa | bellard | printf("3.52 Mb 3\"1/2 disk (1 80 44)");
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220 | baca51fa | bellard | drv->drive = FDRIVE_DRV_288; |
221 | baca51fa | bellard | drv->disk = FDRIVE_DISK_288; |
222 | baca51fa | bellard | drv->last_sect = 44;
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223 | baca51fa | bellard | drv->max_track = 80;
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224 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
225 | baca51fa | bellard | break;
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226 | baca51fa | bellard | case 6400: |
227 | baca51fa | bellard | printf("3.2 Mb 3\"1/2 disk (1 80 40)");
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228 | baca51fa | bellard | drv->drive = FDRIVE_DRV_288; |
229 | baca51fa | bellard | drv->disk = FDRIVE_DISK_288; |
230 | baca51fa | bellard | drv->last_sect = 40;
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231 | baca51fa | bellard | drv->max_track = 80;
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232 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
233 | baca51fa | bellard | break;
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234 | baca51fa | bellard | case 6240: |
235 | baca51fa | bellard | printf("3.12 Mb 3\"1/2 disk (1 80 39)");
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236 | baca51fa | bellard | drv->drive = FDRIVE_DRV_288; |
237 | baca51fa | bellard | drv->disk = FDRIVE_DISK_288; |
238 | baca51fa | bellard | drv->last_sect = 39;
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239 | baca51fa | bellard | drv->max_track = 80;
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240 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
241 | baca51fa | bellard | break;
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242 | baca51fa | bellard | case 5760: |
243 | baca51fa | bellard | printf("2.88 Mb 3\"1/2 disk (1 80 36)");
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244 | baca51fa | bellard | drv->drive = FDRIVE_DRV_288; |
245 | 8977f3c1 | bellard | drv->disk = FDRIVE_DISK_288; |
246 | 8977f3c1 | bellard | drv->last_sect = 36;
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247 | 8977f3c1 | bellard | drv->max_track = 80;
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248 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
249 | baca51fa | bellard | break;
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250 | baca51fa | bellard | |
251 | baca51fa | bellard | /* 1.44 MB 3"1/2 drive disks */
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252 | baca51fa | bellard | case 3840: |
253 | baca51fa | bellard | printf("1.92 Mb 3\"1/2 disk (1 80 24)");
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254 | baca51fa | bellard | drv->drive = FDRIVE_DRV_144; |
255 | baca51fa | bellard | drv->disk = FDRIVE_DISK_144; |
256 | baca51fa | bellard | drv->last_sect = 24;
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257 | baca51fa | bellard | drv->max_track = 80;
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258 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
259 | baca51fa | bellard | break;
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260 | baca51fa | bellard | case 3680: |
261 | baca51fa | bellard | printf("1.84 Mb 3\"1/2 disk (1 80 23)");
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262 | baca51fa | bellard | drv->drive = FDRIVE_DRV_144; |
263 | baca51fa | bellard | drv->disk = FDRIVE_DISK_144; |
264 | baca51fa | bellard | drv->last_sect = 23;
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265 | baca51fa | bellard | drv->max_track = 80;
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266 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
267 | baca51fa | bellard | break;
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268 | baca51fa | bellard | case 3520: |
269 | baca51fa | bellard | printf("1.76 Mb 3\"1/2 disk (1 80 22)");
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270 | baca51fa | bellard | drv->drive = FDRIVE_DRV_144; |
271 | baca51fa | bellard | drv->disk = FDRIVE_DISK_144; |
272 | baca51fa | bellard | drv->last_sect = 22;
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273 | baca51fa | bellard | drv->max_track = 80;
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274 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
275 | baca51fa | bellard | break;
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276 | baca51fa | bellard | case 3486: |
277 | baca51fa | bellard | printf("1.74 Mb 3\"1/2 disk (1 83 21)");
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278 | baca51fa | bellard | drv->drive = FDRIVE_DRV_144; |
279 | baca51fa | bellard | drv->disk = FDRIVE_DISK_144; |
280 | baca51fa | bellard | drv->last_sect = 21;
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281 | baca51fa | bellard | drv->max_track = 83;
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282 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
283 | baca51fa | bellard | break;
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284 | baca51fa | bellard | case 3444: |
285 | baca51fa | bellard | printf("1.72 Mb 3\"1/2 disk (1 82 21)");
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286 | baca51fa | bellard | drv->drive = FDRIVE_DRV_144; |
287 | baca51fa | bellard | drv->disk = FDRIVE_DISK_144; |
288 | baca51fa | bellard | drv->last_sect = 21;
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289 | baca51fa | bellard | drv->max_track = 82;
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290 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
291 | baca51fa | bellard | break;
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292 | baca51fa | bellard | case 3360: |
293 | baca51fa | bellard | printf("1.68 Mb 3\"1/2 disk (1 80 21)");
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294 | baca51fa | bellard | drv->drive = FDRIVE_DRV_144; |
295 | baca51fa | bellard | drv->disk = FDRIVE_DISK_144; |
296 | baca51fa | bellard | drv->last_sect = 21;
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297 | baca51fa | bellard | drv->max_track = 80;
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298 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
299 | baca51fa | bellard | break;
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300 | baca51fa | bellard | case 3200: |
301 | baca51fa | bellard | printf("1.6 Mb 3\"1/2 disk (1 80 20)");
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302 | baca51fa | bellard | drv->drive = FDRIVE_DRV_144; |
303 | baca51fa | bellard | drv->disk = FDRIVE_DISK_144; |
304 | baca51fa | bellard | drv->last_sect = 20;
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305 | baca51fa | bellard | drv->max_track = 80;
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306 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
307 | baca51fa | bellard | break;
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308 | baca51fa | bellard | case 2880: |
309 | baca51fa | bellard | default:
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310 | baca51fa | bellard | printf("1.44 Mb 3\"1/2 disk (1 80 18)");
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311 | baca51fa | bellard | drv->drive = FDRIVE_DRV_144; |
312 | 8977f3c1 | bellard | drv->disk = FDRIVE_DISK_144; |
313 | 8977f3c1 | bellard | drv->last_sect = 18;
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314 | 8977f3c1 | bellard | drv->max_track = 80;
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315 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
316 | baca51fa | bellard | break;
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317 | baca51fa | bellard | |
318 | baca51fa | bellard | /* 720 kB 3"1/2 drive disks */
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319 | baca51fa | bellard | case 2240: |
320 | baca51fa | bellard | printf("1.12 Mb 3\"1/2 disk (1 80 14)");
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321 | baca51fa | bellard | drv->drive = FDRIVE_DRV_144; |
322 | baca51fa | bellard | drv->disk = FDRIVE_DISK_720; |
323 | baca51fa | bellard | drv->last_sect = 14;
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324 | baca51fa | bellard | drv->max_track = 80;
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325 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
326 | baca51fa | bellard | break;
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327 | baca51fa | bellard | case 2080: |
328 | baca51fa | bellard | printf("1.04 Mb 3\"1/2 disk (1 80 13)");
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329 | baca51fa | bellard | drv->drive = FDRIVE_DRV_144; |
330 | baca51fa | bellard | drv->disk = FDRIVE_DISK_720; |
331 | baca51fa | bellard | drv->last_sect = 13;
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332 | baca51fa | bellard | drv->max_track = 80;
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333 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
334 | baca51fa | bellard | break;
|
335 | baca51fa | bellard | case 1660: |
336 | baca51fa | bellard | printf("830 kb 3\"1/2 disk (1 83 10)");
|
337 | baca51fa | bellard | drv->drive = FDRIVE_DRV_144; |
338 | baca51fa | bellard | drv->disk = FDRIVE_DISK_720; |
339 | baca51fa | bellard | drv->last_sect = 10;
|
340 | baca51fa | bellard | drv->max_track = 83;
|
341 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
342 | baca51fa | bellard | break;
|
343 | baca51fa | bellard | case 1640: |
344 | baca51fa | bellard | printf("820 kb 3\"1/2 disk (1 82 10)");
|
345 | baca51fa | bellard | drv->drive = FDRIVE_DRV_144; |
346 | baca51fa | bellard | drv->disk = FDRIVE_DISK_720; |
347 | baca51fa | bellard | drv->last_sect = 10;
|
348 | baca51fa | bellard | drv->max_track = 82;
|
349 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
350 | baca51fa | bellard | break;
|
351 | baca51fa | bellard | case 1600: |
352 | baca51fa | bellard | printf("800 kb 3\"1/2 disk (1 80 10)");
|
353 | baca51fa | bellard | drv->drive = FDRIVE_DRV_144; |
354 | baca51fa | bellard | drv->disk = FDRIVE_DISK_720; |
355 | baca51fa | bellard | drv->last_sect = 10;
|
356 | baca51fa | bellard | drv->max_track = 80;
|
357 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
358 | baca51fa | bellard | break;
|
359 | baca51fa | bellard | case 1440: |
360 | baca51fa | bellard | printf("720 kb 3\"1/2 disk (1 80 9)");
|
361 | baca51fa | bellard | drv->drive = FDRIVE_DRV_144; |
362 | 8977f3c1 | bellard | drv->disk = FDRIVE_DISK_720; |
363 | 8977f3c1 | bellard | drv->last_sect = 9;
|
364 | 8977f3c1 | bellard | drv->max_track = 80;
|
365 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
366 | baca51fa | bellard | break;
|
367 | baca51fa | bellard | |
368 | baca51fa | bellard | /* 1.2 MB 5"1/4 drive disks */
|
369 | baca51fa | bellard | case 2988: |
370 | baca51fa | bellard | printf("1.49 Mb 5\"1/4 disk (1 83 18)");
|
371 | baca51fa | bellard | drv->drive = FDRIVE_DRV_120; |
372 | baca51fa | bellard | drv->disk = FDRIVE_DISK_144; /* ? */
|
373 | baca51fa | bellard | drv->last_sect = 18;
|
374 | baca51fa | bellard | drv->max_track = 83;
|
375 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
376 | baca51fa | bellard | break;
|
377 | baca51fa | bellard | case 2952: |
378 | baca51fa | bellard | printf("1.48 Mb 5\"1/4 disk (1 82 18)");
|
379 | baca51fa | bellard | drv->drive = FDRIVE_DRV_120; |
380 | baca51fa | bellard | drv->disk = FDRIVE_DISK_144; /* ? */
|
381 | baca51fa | bellard | drv->last_sect = 18;
|
382 | baca51fa | bellard | drv->max_track = 82;
|
383 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
384 | baca51fa | bellard | break;
|
385 | baca51fa | bellard | case 2400: |
386 | baca51fa | bellard | printf("1.2 Mb 5\"1/4 disk (1 80 15)");
|
387 | baca51fa | bellard | drv->drive = FDRIVE_DRV_120; |
388 | baca51fa | bellard | drv->disk = FDRIVE_DISK_144; /* ? */
|
389 | baca51fa | bellard | drv->last_sect = 15;
|
390 | baca51fa | bellard | drv->max_track = 80;
|
391 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
392 | baca51fa | bellard | break;
|
393 | baca51fa | bellard | |
394 | baca51fa | bellard | case 1760: |
395 | baca51fa | bellard | printf("880 kb 5\"1/4 disk (1 80 11)");
|
396 | baca51fa | bellard | drv->drive = FDRIVE_DRV_120; |
397 | baca51fa | bellard | drv->disk = FDRIVE_DISK_144; /* ? */
|
398 | baca51fa | bellard | drv->last_sect = 11;
|
399 | baca51fa | bellard | drv->max_track = 80;
|
400 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
401 | baca51fa | bellard | break;
|
402 | baca51fa | bellard | |
403 | baca51fa | bellard | /* 360 kB 5"1/4 drive disks */
|
404 | baca51fa | bellard | case 840: |
405 | baca51fa | bellard | /* 420 kB 5"1/4 disk */
|
406 | baca51fa | bellard | printf("420 kb 5\"1/4 disk (1 42 10)");
|
407 | baca51fa | bellard | drv->drive = FDRIVE_DRV_120; |
408 | baca51fa | bellard | drv->disk = FDRIVE_DISK_144; /* ? */
|
409 | baca51fa | bellard | drv->last_sect = 10;
|
410 | baca51fa | bellard | drv->max_track = 42;
|
411 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
412 | baca51fa | bellard | case 820: |
413 | baca51fa | bellard | /* 410 kB 5"1/4 disk */
|
414 | baca51fa | bellard | printf("410 kb 5\"1/4 disk (1 41 10)");
|
415 | baca51fa | bellard | drv->drive = FDRIVE_DRV_120; |
416 | baca51fa | bellard | drv->disk = FDRIVE_DISK_144; /* ? */
|
417 | baca51fa | bellard | drv->last_sect = 10;
|
418 | baca51fa | bellard | drv->max_track = 41;
|
419 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
420 | baca51fa | bellard | case 720: |
421 | baca51fa | bellard | /* 360 kB 5"1/4 disk */
|
422 | baca51fa | bellard | printf("360 kb 5\"1/4 disk (1 40 9)");
|
423 | baca51fa | bellard | drv->drive = FDRIVE_DRV_120; |
424 | baca51fa | bellard | drv->disk = FDRIVE_DISK_144; /* ? */
|
425 | baca51fa | bellard | drv->last_sect = 9;
|
426 | baca51fa | bellard | drv->max_track = 40;
|
427 | baca51fa | bellard | drv->flags |= FDISK_DBL_SIDES; |
428 | baca51fa | bellard | break;
|
429 | 8977f3c1 | bellard | } |
430 | baca51fa | bellard | printf(" %s\n", ro == 0 ? "rw" : "ro"); |
431 | baca51fa | bellard | } |
432 | baca51fa | bellard | drv->ro = ro; |
433 | 8977f3c1 | bellard | } else {
|
434 | baca51fa | bellard | printf("No disk in drive\n");
|
435 | 8977f3c1 | bellard | drv->disk = FDRIVE_DISK_NONE; |
436 | baca51fa | bellard | drv->last_sect = 0;
|
437 | baca51fa | bellard | drv->max_track = 0;
|
438 | baca51fa | bellard | drv->flags &= ~FDISK_DBL_SIDES; |
439 | 8977f3c1 | bellard | } |
440 | baca51fa | bellard | drv->drflags |= FDRIVE_REVALIDATE; |
441 | caed8802 | bellard | } |
442 | caed8802 | bellard | |
443 | 8977f3c1 | bellard | /* Motor control */
|
444 | 8977f3c1 | bellard | static void fd_start (fdrive_t *drv) |
445 | 8977f3c1 | bellard | { |
446 | baca51fa | bellard | drv->drflags |= FDRIVE_MOTOR_ON; |
447 | 8977f3c1 | bellard | } |
448 | 8977f3c1 | bellard | |
449 | 8977f3c1 | bellard | static void fd_stop (fdrive_t *drv) |
450 | 8977f3c1 | bellard | { |
451 | baca51fa | bellard | drv->drflags &= ~FDRIVE_MOTOR_ON; |
452 | 8977f3c1 | bellard | } |
453 | 8977f3c1 | bellard | |
454 | 8977f3c1 | bellard | /* Re-initialise a drives (motor off, repositioned) */
|
455 | 8977f3c1 | bellard | static void fd_reset (fdrive_t *drv) |
456 | 8977f3c1 | bellard | { |
457 | 8977f3c1 | bellard | fd_stop(drv); |
458 | 8977f3c1 | bellard | fd_recalibrate(drv); |
459 | 8977f3c1 | bellard | } |
460 | 8977f3c1 | bellard | |
461 | 8977f3c1 | bellard | /********************************************************/
|
462 | 8977f3c1 | bellard | /* Intel 82078 floppy disk controler emulation */
|
463 | 8977f3c1 | bellard | |
464 | baca51fa | bellard | static void fdctrl_reset (fdctrl_t *fdctrl, int do_irq); |
465 | baca51fa | bellard | static void fdctrl_reset_fifo (fdctrl_t *fdctrl); |
466 | f9e92e97 | bellard | static int fdctrl_transfer_handler (void *opaque, target_ulong addr, int size); |
467 | baca51fa | bellard | static void fdctrl_raise_irq (fdctrl_t *fdctrl, uint8_t status); |
468 | baca51fa | bellard | |
469 | baca51fa | bellard | static uint32_t fdctrl_read_statusB (fdctrl_t *fdctrl);
|
470 | baca51fa | bellard | static uint32_t fdctrl_read_dor (fdctrl_t *fdctrl);
|
471 | baca51fa | bellard | static void fdctrl_write_dor (fdctrl_t *fdctrl, uint32_t value); |
472 | baca51fa | bellard | static uint32_t fdctrl_read_tape (fdctrl_t *fdctrl);
|
473 | baca51fa | bellard | static void fdctrl_write_tape (fdctrl_t *fdctrl, uint32_t value); |
474 | baca51fa | bellard | static uint32_t fdctrl_read_main_status (fdctrl_t *fdctrl);
|
475 | baca51fa | bellard | static void fdctrl_write_rate (fdctrl_t *fdctrl, uint32_t value); |
476 | baca51fa | bellard | static uint32_t fdctrl_read_data (fdctrl_t *fdctrl);
|
477 | baca51fa | bellard | static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value); |
478 | baca51fa | bellard | static uint32_t fdctrl_read_dir (fdctrl_t *fdctrl);
|
479 | 8977f3c1 | bellard | |
480 | 8977f3c1 | bellard | enum {
|
481 | 8977f3c1 | bellard | FD_CTRL_ACTIVE = 0x01,
|
482 | 8977f3c1 | bellard | FD_CTRL_RESET = 0x02,
|
483 | 8977f3c1 | bellard | FD_CTRL_SLEEP = 0x04,
|
484 | 8977f3c1 | bellard | FD_CTRL_BUSY = 0x08,
|
485 | 8977f3c1 | bellard | FD_CTRL_INTR = 0x10,
|
486 | 8977f3c1 | bellard | }; |
487 | 8977f3c1 | bellard | |
488 | 8977f3c1 | bellard | enum {
|
489 | 8977f3c1 | bellard | FD_DIR_WRITE = 0,
|
490 | 8977f3c1 | bellard | FD_DIR_READ = 1,
|
491 | 8977f3c1 | bellard | FD_DIR_SCANE = 2,
|
492 | 8977f3c1 | bellard | FD_DIR_SCANL = 3,
|
493 | 8977f3c1 | bellard | FD_DIR_SCANH = 4,
|
494 | 8977f3c1 | bellard | }; |
495 | 8977f3c1 | bellard | |
496 | 8977f3c1 | bellard | enum {
|
497 | 8977f3c1 | bellard | FD_STATE_CMD = 0x00,
|
498 | 8977f3c1 | bellard | FD_STATE_STATUS = 0x01,
|
499 | 8977f3c1 | bellard | FD_STATE_DATA = 0x02,
|
500 | 8977f3c1 | bellard | FD_STATE_STATE = 0x03,
|
501 | 8977f3c1 | bellard | FD_STATE_MULTI = 0x10,
|
502 | 8977f3c1 | bellard | FD_STATE_SEEK = 0x20,
|
503 | baca51fa | bellard | FD_STATE_FORMAT = 0x40,
|
504 | 8977f3c1 | bellard | }; |
505 | 8977f3c1 | bellard | |
506 | 8977f3c1 | bellard | #define FD_STATE(state) ((state) & FD_STATE_STATE)
|
507 | baca51fa | bellard | #define FD_SET_STATE(state, new_state) \
|
508 | baca51fa | bellard | do { (state) = ((state) & ~FD_STATE_STATE) | (new_state); } while (0) |
509 | 8977f3c1 | bellard | #define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
|
510 | 8977f3c1 | bellard | #define FD_DID_SEEK(state) ((state) & FD_STATE_SEEK)
|
511 | baca51fa | bellard | #define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
|
512 | 8977f3c1 | bellard | |
513 | baca51fa | bellard | struct fdctrl_t {
|
514 | baca51fa | bellard | fdctrl_t *fdctrl; |
515 | 8977f3c1 | bellard | /* Controler's identification */
|
516 | 8977f3c1 | bellard | uint8_t version; |
517 | 8977f3c1 | bellard | /* HW */
|
518 | 8977f3c1 | bellard | int irq_lvl;
|
519 | 8977f3c1 | bellard | int dma_chann;
|
520 | baca51fa | bellard | uint32_t io_base; |
521 | 8977f3c1 | bellard | /* Controler state */
|
522 | 8977f3c1 | bellard | uint8_t state; |
523 | 8977f3c1 | bellard | uint8_t dma_en; |
524 | 8977f3c1 | bellard | uint8_t cur_drv; |
525 | 8977f3c1 | bellard | uint8_t bootsel; |
526 | 8977f3c1 | bellard | /* Command FIFO */
|
527 | 8977f3c1 | bellard | uint8_t fifo[FD_SECTOR_LEN]; |
528 | 8977f3c1 | bellard | uint32_t data_pos; |
529 | 8977f3c1 | bellard | uint32_t data_len; |
530 | 8977f3c1 | bellard | uint8_t data_state; |
531 | 8977f3c1 | bellard | uint8_t data_dir; |
532 | 8977f3c1 | bellard | uint8_t int_status; |
533 | 8977f3c1 | bellard | /* States kept only to be returned back */
|
534 | 8977f3c1 | bellard | /* Timers state */
|
535 | 8977f3c1 | bellard | uint8_t timer0; |
536 | 8977f3c1 | bellard | uint8_t timer1; |
537 | 8977f3c1 | bellard | /* precompensation */
|
538 | 8977f3c1 | bellard | uint8_t precomp_trk; |
539 | 8977f3c1 | bellard | uint8_t config; |
540 | 8977f3c1 | bellard | uint8_t lock; |
541 | 8977f3c1 | bellard | /* Power down config (also with status regB access mode */
|
542 | 8977f3c1 | bellard | uint8_t pwrd; |
543 | 8977f3c1 | bellard | /* Floppy drives */
|
544 | 8977f3c1 | bellard | fdrive_t drives[2];
|
545 | baca51fa | bellard | }; |
546 | baca51fa | bellard | |
547 | baca51fa | bellard | static uint32_t fdctrl_read (void *opaque, uint32_t reg) |
548 | baca51fa | bellard | { |
549 | baca51fa | bellard | fdctrl_t *fdctrl = opaque; |
550 | baca51fa | bellard | uint32_t retval; |
551 | baca51fa | bellard | |
552 | baca51fa | bellard | if (reg == fdctrl->io_base + 0x01) |
553 | baca51fa | bellard | retval = fdctrl_read_statusB(fdctrl); |
554 | baca51fa | bellard | else if (reg == fdctrl->io_base + 0x02) |
555 | baca51fa | bellard | retval = fdctrl_read_dor(fdctrl); |
556 | baca51fa | bellard | else if (reg == fdctrl->io_base + 0x03) |
557 | baca51fa | bellard | retval = fdctrl_read_tape(fdctrl); |
558 | baca51fa | bellard | else if (reg == fdctrl->io_base + 0x04) |
559 | baca51fa | bellard | retval = fdctrl_read_main_status(fdctrl); |
560 | baca51fa | bellard | else if (reg == fdctrl->io_base + 0x05) |
561 | baca51fa | bellard | retval = fdctrl_read_data(fdctrl); |
562 | baca51fa | bellard | else if (reg == fdctrl->io_base + 0x07) |
563 | baca51fa | bellard | retval = fdctrl_read_dir(fdctrl); |
564 | baca51fa | bellard | else
|
565 | baca51fa | bellard | retval = (uint32_t)(-1);
|
566 | baca51fa | bellard | |
567 | baca51fa | bellard | return retval;
|
568 | baca51fa | bellard | } |
569 | baca51fa | bellard | |
570 | baca51fa | bellard | static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value) |
571 | baca51fa | bellard | { |
572 | baca51fa | bellard | fdctrl_t *fdctrl = opaque; |
573 | baca51fa | bellard | |
574 | baca51fa | bellard | if (reg == fdctrl->io_base + 0x02) |
575 | baca51fa | bellard | fdctrl_write_dor(fdctrl, value); |
576 | baca51fa | bellard | else if (reg == fdctrl->io_base + 0x03) |
577 | baca51fa | bellard | fdctrl_write_tape(fdctrl, value); |
578 | baca51fa | bellard | else if (reg == fdctrl->io_base + 0x04) |
579 | baca51fa | bellard | fdctrl_write_rate(fdctrl, value); |
580 | baca51fa | bellard | else if (reg == fdctrl->io_base + 0x05) |
581 | baca51fa | bellard | fdctrl_write_data(fdctrl, value); |
582 | baca51fa | bellard | } |
583 | baca51fa | bellard | |
584 | baca51fa | bellard | static void fd_change_cb (void *opaque) |
585 | baca51fa | bellard | { |
586 | baca51fa | bellard | fdrive_t *drv = opaque; |
587 | 8977f3c1 | bellard | |
588 | baca51fa | bellard | FLOPPY_DPRINTF("disk change\n");
|
589 | baca51fa | bellard | /* TODO: use command-line parameters to force geometry */
|
590 | baca51fa | bellard | fd_revalidate(drv); |
591 | baca51fa | bellard | #if 0
|
592 | baca51fa | bellard | fd_recalibrate(drv);
|
593 | baca51fa | bellard | fdctrl_reset_fifo(drv->fdctrl);
|
594 | baca51fa | bellard | fdctrl_raise_irq(drv->fdctrl, 0x20);
|
595 | baca51fa | bellard | #endif
|
596 | baca51fa | bellard | } |
597 | 8977f3c1 | bellard | |
598 | baca51fa | bellard | fdctrl_t *fdctrl_init (int irq_lvl, int dma_chann, int mem_mapped, |
599 | baca51fa | bellard | uint32_t io_base, |
600 | baca51fa | bellard | BlockDriverState **fds) |
601 | 8977f3c1 | bellard | { |
602 | baca51fa | bellard | fdctrl_t *fdctrl; |
603 | 8977f3c1 | bellard | // int io_mem;
|
604 | 8977f3c1 | bellard | int i;
|
605 | 8977f3c1 | bellard | |
606 | 8977f3c1 | bellard | FLOPPY_DPRINTF("init controler\n");
|
607 | baca51fa | bellard | fdctrl = qemu_mallocz(sizeof(fdctrl_t));
|
608 | baca51fa | bellard | if (!fdctrl)
|
609 | baca51fa | bellard | return NULL; |
610 | baca51fa | bellard | fdctrl->version = 0x90; /* Intel 82078 controler */ |
611 | baca51fa | bellard | fdctrl->irq_lvl = irq_lvl; |
612 | baca51fa | bellard | fdctrl->dma_chann = dma_chann; |
613 | baca51fa | bellard | fdctrl->io_base = io_base; |
614 | baca51fa | bellard | fdctrl->config = 0x40; /* Implicit seek, polling & FIFO enabled */ |
615 | baca51fa | bellard | if (fdctrl->dma_chann != -1) { |
616 | baca51fa | bellard | fdctrl->dma_en = 1;
|
617 | baca51fa | bellard | DMA_register_channel(dma_chann, &fdctrl_transfer_handler, fdctrl); |
618 | 8977f3c1 | bellard | } else {
|
619 | baca51fa | bellard | fdctrl->dma_en = 0;
|
620 | 8977f3c1 | bellard | } |
621 | baca51fa | bellard | for (i = 0; i < 2; i++) { |
622 | baca51fa | bellard | fd_init(&fdctrl->drives[i], fds[i]); |
623 | baca51fa | bellard | if (fds[i]) {
|
624 | baca51fa | bellard | bdrv_set_change_cb(fds[i], |
625 | baca51fa | bellard | &fd_change_cb, &fdctrl->drives[i]); |
626 | baca51fa | bellard | } |
627 | caed8802 | bellard | } |
628 | baca51fa | bellard | fdctrl_reset(fdctrl, 0);
|
629 | baca51fa | bellard | fdctrl->state = FD_CTRL_ACTIVE; |
630 | 8977f3c1 | bellard | if (mem_mapped) {
|
631 | 8977f3c1 | bellard | FLOPPY_ERROR("memory mapped floppy not supported by now !\n");
|
632 | 8977f3c1 | bellard | #if 0
|
633 | 8977f3c1 | bellard | io_mem = cpu_register_io_memory(0, fdctrl_mem_read, fdctrl_mem_write);
|
634 | 8977f3c1 | bellard | cpu_register_physical_memory(base, 0x08, io_mem);
|
635 | 8977f3c1 | bellard | #endif
|
636 | 8977f3c1 | bellard | } else {
|
637 | baca51fa | bellard | register_ioport_read(io_base + 0x01, 5, 1, &fdctrl_read, fdctrl); |
638 | baca51fa | bellard | register_ioport_read(io_base + 0x07, 1, 1, &fdctrl_read, fdctrl); |
639 | baca51fa | bellard | register_ioport_write(io_base + 0x01, 5, 1, &fdctrl_write, fdctrl); |
640 | baca51fa | bellard | register_ioport_write(io_base + 0x07, 1, 1, &fdctrl_write, fdctrl); |
641 | 8977f3c1 | bellard | } |
642 | caed8802 | bellard | for (i = 0; i < MAX_FD; i++) { |
643 | baca51fa | bellard | fd_revalidate(&fdctrl->drives[i]); |
644 | 8977f3c1 | bellard | } |
645 | baca51fa | bellard | return fdctrl;
|
646 | caed8802 | bellard | } |
647 | 8977f3c1 | bellard | |
648 | baca51fa | bellard | /* XXX: may change if moved to bdrv */
|
649 | baca51fa | bellard | int fdctrl_get_drive_type(fdctrl_t *fdctrl, int drive_num) |
650 | caed8802 | bellard | { |
651 | baca51fa | bellard | return fdctrl->drives[drive_num].drive;
|
652 | 8977f3c1 | bellard | } |
653 | 8977f3c1 | bellard | |
654 | 8977f3c1 | bellard | /* Change IRQ state */
|
655 | baca51fa | bellard | static void fdctrl_reset_irq (fdctrl_t *fdctrl) |
656 | 8977f3c1 | bellard | { |
657 | baca51fa | bellard | if (fdctrl->state & FD_CTRL_INTR) {
|
658 | baca51fa | bellard | pic_set_irq(fdctrl->irq_lvl, 0);
|
659 | baca51fa | bellard | fdctrl->state &= ~(FD_CTRL_INTR | FD_CTRL_SLEEP | FD_CTRL_BUSY); |
660 | 8977f3c1 | bellard | } |
661 | 8977f3c1 | bellard | } |
662 | 8977f3c1 | bellard | |
663 | baca51fa | bellard | static void fdctrl_raise_irq (fdctrl_t *fdctrl, uint8_t status) |
664 | 8977f3c1 | bellard | { |
665 | baca51fa | bellard | if (~(fdctrl->state & FD_CTRL_INTR)) {
|
666 | baca51fa | bellard | pic_set_irq(fdctrl->irq_lvl, 1);
|
667 | baca51fa | bellard | fdctrl->state |= FD_CTRL_INTR; |
668 | 8977f3c1 | bellard | } |
669 | 8977f3c1 | bellard | FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", status);
|
670 | baca51fa | bellard | fdctrl->int_status = status; |
671 | 8977f3c1 | bellard | } |
672 | 8977f3c1 | bellard | |
673 | 8977f3c1 | bellard | /* Reset controler */
|
674 | baca51fa | bellard | static void fdctrl_reset (fdctrl_t *fdctrl, int do_irq) |
675 | 8977f3c1 | bellard | { |
676 | 8977f3c1 | bellard | int i;
|
677 | 8977f3c1 | bellard | |
678 | 8977f3c1 | bellard | FLOPPY_DPRINTF("reset controler\n");
|
679 | baca51fa | bellard | fdctrl_reset_irq(fdctrl); |
680 | 8977f3c1 | bellard | /* Initialise controler */
|
681 | baca51fa | bellard | fdctrl->cur_drv = 0;
|
682 | 8977f3c1 | bellard | /* FIFO state */
|
683 | baca51fa | bellard | fdctrl->data_pos = 0;
|
684 | baca51fa | bellard | fdctrl->data_len = 0;
|
685 | baca51fa | bellard | fdctrl->data_state = FD_STATE_CMD; |
686 | baca51fa | bellard | fdctrl->data_dir = FD_DIR_WRITE; |
687 | 8977f3c1 | bellard | for (i = 0; i < MAX_FD; i++) |
688 | baca51fa | bellard | fd_reset(&fdctrl->drives[i]); |
689 | baca51fa | bellard | fdctrl_reset_fifo(fdctrl); |
690 | 8977f3c1 | bellard | if (do_irq)
|
691 | baca51fa | bellard | fdctrl_raise_irq(fdctrl, 0x20);
|
692 | baca51fa | bellard | } |
693 | baca51fa | bellard | |
694 | baca51fa | bellard | static inline fdrive_t *drv0 (fdctrl_t *fdctrl) |
695 | baca51fa | bellard | { |
696 | baca51fa | bellard | return &fdctrl->drives[fdctrl->bootsel];
|
697 | baca51fa | bellard | } |
698 | baca51fa | bellard | |
699 | baca51fa | bellard | static inline fdrive_t *drv1 (fdctrl_t *fdctrl) |
700 | baca51fa | bellard | { |
701 | baca51fa | bellard | return &fdctrl->drives[1 - fdctrl->bootsel]; |
702 | baca51fa | bellard | } |
703 | baca51fa | bellard | |
704 | baca51fa | bellard | static fdrive_t *get_cur_drv (fdctrl_t *fdctrl)
|
705 | baca51fa | bellard | { |
706 | baca51fa | bellard | return fdctrl->cur_drv == 0 ? drv0(fdctrl) : drv1(fdctrl); |
707 | 8977f3c1 | bellard | } |
708 | 8977f3c1 | bellard | |
709 | 8977f3c1 | bellard | /* Status B register : 0x01 (read-only) */
|
710 | baca51fa | bellard | static uint32_t fdctrl_read_statusB (fdctrl_t *fdctrl)
|
711 | 8977f3c1 | bellard | { |
712 | baca51fa | bellard | fdctrl_reset_irq(fdctrl); |
713 | 8977f3c1 | bellard | FLOPPY_DPRINTF("status register: 0x00\n");
|
714 | 8977f3c1 | bellard | |
715 | 8977f3c1 | bellard | return 0; |
716 | 8977f3c1 | bellard | } |
717 | 8977f3c1 | bellard | |
718 | 8977f3c1 | bellard | /* Digital output register : 0x02 */
|
719 | baca51fa | bellard | static uint32_t fdctrl_read_dor (fdctrl_t *fdctrl)
|
720 | 8977f3c1 | bellard | { |
721 | 8977f3c1 | bellard | uint32_t retval = 0;
|
722 | 8977f3c1 | bellard | |
723 | 8977f3c1 | bellard | /* Drive motors state indicators */
|
724 | baca51fa | bellard | if (drv0(fdctrl)->drflags & FDRIVE_MOTOR_ON)
|
725 | baca51fa | bellard | retval |= 1 << 5; |
726 | baca51fa | bellard | if (drv1(fdctrl)->drflags & FDRIVE_MOTOR_ON)
|
727 | baca51fa | bellard | retval |= 1 << 4; |
728 | 8977f3c1 | bellard | /* DMA enable */
|
729 | baca51fa | bellard | retval |= fdctrl->dma_en << 3;
|
730 | 8977f3c1 | bellard | /* Reset indicator */
|
731 | baca51fa | bellard | retval |= (fdctrl->state & FD_CTRL_RESET) == 0 ? 0x04 : 0; |
732 | 8977f3c1 | bellard | /* Selected drive */
|
733 | baca51fa | bellard | retval |= fdctrl->cur_drv; |
734 | 8977f3c1 | bellard | FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval);
|
735 | 8977f3c1 | bellard | |
736 | 8977f3c1 | bellard | return retval;
|
737 | 8977f3c1 | bellard | } |
738 | 8977f3c1 | bellard | |
739 | baca51fa | bellard | static void fdctrl_write_dor (fdctrl_t *fdctrl, uint32_t value) |
740 | 8977f3c1 | bellard | { |
741 | baca51fa | bellard | fdctrl_reset_irq(fdctrl); |
742 | 8977f3c1 | bellard | /* Reset mode */
|
743 | baca51fa | bellard | if (fdctrl->state & FD_CTRL_RESET) {
|
744 | 8977f3c1 | bellard | if (!(value & 0x04)) { |
745 | 8977f3c1 | bellard | FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
|
746 | 8977f3c1 | bellard | return;
|
747 | 8977f3c1 | bellard | } |
748 | 8977f3c1 | bellard | } |
749 | 8977f3c1 | bellard | FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value);
|
750 | 8977f3c1 | bellard | /* Drive motors state indicators */
|
751 | 8977f3c1 | bellard | if (value & 0x20) |
752 | baca51fa | bellard | fd_start(drv1(fdctrl)); |
753 | 8977f3c1 | bellard | else
|
754 | baca51fa | bellard | fd_stop(drv1(fdctrl)); |
755 | 8977f3c1 | bellard | if (value & 0x10) |
756 | baca51fa | bellard | fd_start(drv0(fdctrl)); |
757 | 8977f3c1 | bellard | else
|
758 | baca51fa | bellard | fd_stop(drv0(fdctrl)); |
759 | 8977f3c1 | bellard | /* DMA enable */
|
760 | 8977f3c1 | bellard | #if 0
|
761 | baca51fa | bellard | if (fdctrl->dma_chann != -1)
|
762 | baca51fa | bellard | fdctrl->dma_en = 1 - ((value >> 3) & 1);
|
763 | 8977f3c1 | bellard | #endif
|
764 | 8977f3c1 | bellard | /* Reset */
|
765 | 8977f3c1 | bellard | if (!(value & 0x04)) { |
766 | baca51fa | bellard | if (!(fdctrl->state & FD_CTRL_RESET)) {
|
767 | 8977f3c1 | bellard | FLOPPY_DPRINTF("controler enter RESET state\n");
|
768 | baca51fa | bellard | fdctrl->state |= FD_CTRL_RESET; |
769 | baca51fa | bellard | fdctrl_reset(fdctrl, 1);
|
770 | 8977f3c1 | bellard | } |
771 | 8977f3c1 | bellard | } else {
|
772 | baca51fa | bellard | if (fdctrl->state & FD_CTRL_RESET) {
|
773 | 8977f3c1 | bellard | FLOPPY_DPRINTF("controler out of RESET state\n");
|
774 | baca51fa | bellard | fdctrl->state &= ~(FD_CTRL_RESET | FD_CTRL_SLEEP); |
775 | 8977f3c1 | bellard | } |
776 | 8977f3c1 | bellard | } |
777 | 8977f3c1 | bellard | /* Selected drive */
|
778 | baca51fa | bellard | fdctrl->cur_drv = value & 1;
|
779 | 8977f3c1 | bellard | } |
780 | 8977f3c1 | bellard | |
781 | 8977f3c1 | bellard | /* Tape drive register : 0x03 */
|
782 | baca51fa | bellard | static uint32_t fdctrl_read_tape (fdctrl_t *fdctrl)
|
783 | 8977f3c1 | bellard | { |
784 | 8977f3c1 | bellard | uint32_t retval = 0;
|
785 | 8977f3c1 | bellard | |
786 | baca51fa | bellard | fdctrl_reset_irq(fdctrl); |
787 | 8977f3c1 | bellard | /* Disk boot selection indicator */
|
788 | baca51fa | bellard | retval |= fdctrl->bootsel << 2;
|
789 | 8977f3c1 | bellard | /* Tape indicators: never allowed */
|
790 | 8977f3c1 | bellard | FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval);
|
791 | 8977f3c1 | bellard | |
792 | 8977f3c1 | bellard | return retval;
|
793 | 8977f3c1 | bellard | } |
794 | 8977f3c1 | bellard | |
795 | baca51fa | bellard | static void fdctrl_write_tape (fdctrl_t *fdctrl, uint32_t value) |
796 | 8977f3c1 | bellard | { |
797 | baca51fa | bellard | fdctrl_reset_irq(fdctrl); |
798 | 8977f3c1 | bellard | /* Reset mode */
|
799 | baca51fa | bellard | if (fdctrl->state & FD_CTRL_RESET) {
|
800 | 8977f3c1 | bellard | FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
|
801 | 8977f3c1 | bellard | return;
|
802 | 8977f3c1 | bellard | } |
803 | 8977f3c1 | bellard | FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value);
|
804 | 8977f3c1 | bellard | /* Disk boot selection indicator */
|
805 | baca51fa | bellard | fdctrl->bootsel = (value >> 2) & 1; |
806 | 8977f3c1 | bellard | /* Tape indicators: never allow */
|
807 | 8977f3c1 | bellard | } |
808 | 8977f3c1 | bellard | |
809 | 8977f3c1 | bellard | /* Main status register : 0x04 (read) */
|
810 | baca51fa | bellard | static uint32_t fdctrl_read_main_status (fdctrl_t *fdctrl)
|
811 | 8977f3c1 | bellard | { |
812 | 8977f3c1 | bellard | uint32_t retval = 0;
|
813 | 8977f3c1 | bellard | |
814 | baca51fa | bellard | fdctrl_reset_irq(fdctrl); |
815 | baca51fa | bellard | fdctrl->state &= ~(FD_CTRL_SLEEP | FD_CTRL_RESET); |
816 | baca51fa | bellard | if (!(fdctrl->state & FD_CTRL_BUSY)) {
|
817 | 8977f3c1 | bellard | /* Data transfer allowed */
|
818 | 8977f3c1 | bellard | retval |= 0x80;
|
819 | 8977f3c1 | bellard | /* Data transfer direction indicator */
|
820 | baca51fa | bellard | if (fdctrl->data_dir == FD_DIR_READ)
|
821 | 8977f3c1 | bellard | retval |= 0x40;
|
822 | 8977f3c1 | bellard | } |
823 | 8977f3c1 | bellard | /* Should handle 0x20 for SPECIFY command */
|
824 | 8977f3c1 | bellard | /* Command busy indicator */
|
825 | baca51fa | bellard | if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA ||
|
826 | baca51fa | bellard | FD_STATE(fdctrl->data_state) == FD_STATE_STATUS) |
827 | 8977f3c1 | bellard | retval |= 0x10;
|
828 | 8977f3c1 | bellard | FLOPPY_DPRINTF("main status register: 0x%02x\n", retval);
|
829 | 8977f3c1 | bellard | |
830 | 8977f3c1 | bellard | return retval;
|
831 | 8977f3c1 | bellard | } |
832 | 8977f3c1 | bellard | |
833 | 8977f3c1 | bellard | /* Data select rate register : 0x04 (write) */
|
834 | baca51fa | bellard | static void fdctrl_write_rate (fdctrl_t *fdctrl, uint32_t value) |
835 | 8977f3c1 | bellard | { |
836 | baca51fa | bellard | fdctrl_reset_irq(fdctrl); |
837 | 8977f3c1 | bellard | /* Reset mode */
|
838 | baca51fa | bellard | if (fdctrl->state & FD_CTRL_RESET) {
|
839 | 8977f3c1 | bellard | FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
|
840 | 8977f3c1 | bellard | return;
|
841 | 8977f3c1 | bellard | } |
842 | 8977f3c1 | bellard | FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value);
|
843 | 8977f3c1 | bellard | /* Reset: autoclear */
|
844 | 8977f3c1 | bellard | if (value & 0x80) { |
845 | baca51fa | bellard | fdctrl->state |= FD_CTRL_RESET; |
846 | baca51fa | bellard | fdctrl_reset(fdctrl, 1);
|
847 | baca51fa | bellard | fdctrl->state &= ~FD_CTRL_RESET; |
848 | 8977f3c1 | bellard | } |
849 | 8977f3c1 | bellard | if (value & 0x40) { |
850 | baca51fa | bellard | fdctrl->state |= FD_CTRL_SLEEP; |
851 | baca51fa | bellard | fdctrl_reset(fdctrl, 1);
|
852 | 8977f3c1 | bellard | } |
853 | 8977f3c1 | bellard | // fdctrl.precomp = (value >> 2) & 0x07;
|
854 | 8977f3c1 | bellard | } |
855 | 8977f3c1 | bellard | |
856 | 8977f3c1 | bellard | /* Digital input register : 0x07 (read-only) */
|
857 | baca51fa | bellard | static uint32_t fdctrl_read_dir (fdctrl_t *fdctrl)
|
858 | 8977f3c1 | bellard | { |
859 | 8977f3c1 | bellard | uint32_t retval = 0;
|
860 | 8977f3c1 | bellard | |
861 | baca51fa | bellard | fdctrl_reset_irq(fdctrl); |
862 | baca51fa | bellard | if (drv0(fdctrl)->drflags & FDRIVE_REVALIDATE ||
|
863 | baca51fa | bellard | drv1(fdctrl)->drflags & FDRIVE_REVALIDATE) |
864 | 8977f3c1 | bellard | retval |= 0x80;
|
865 | 8977f3c1 | bellard | if (retval != 0) |
866 | baca51fa | bellard | FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval);
|
867 | baca51fa | bellard | drv0(fdctrl)->drflags &= ~FDRIVE_REVALIDATE; |
868 | baca51fa | bellard | drv1(fdctrl)->drflags &= ~FDRIVE_REVALIDATE; |
869 | 8977f3c1 | bellard | |
870 | 8977f3c1 | bellard | return retval;
|
871 | 8977f3c1 | bellard | } |
872 | 8977f3c1 | bellard | |
873 | 8977f3c1 | bellard | /* FIFO state control */
|
874 | baca51fa | bellard | static void fdctrl_reset_fifo (fdctrl_t *fdctrl) |
875 | 8977f3c1 | bellard | { |
876 | baca51fa | bellard | fdctrl->data_dir = FD_DIR_WRITE; |
877 | baca51fa | bellard | fdctrl->data_pos = 0;
|
878 | baca51fa | bellard | FD_SET_STATE(fdctrl->data_state, FD_STATE_CMD); |
879 | 8977f3c1 | bellard | } |
880 | 8977f3c1 | bellard | |
881 | 8977f3c1 | bellard | /* Set FIFO status for the host to read */
|
882 | baca51fa | bellard | static void fdctrl_set_fifo (fdctrl_t *fdctrl, int fifo_len, int do_irq) |
883 | 8977f3c1 | bellard | { |
884 | baca51fa | bellard | fdctrl->data_dir = FD_DIR_READ; |
885 | baca51fa | bellard | fdctrl->data_len = fifo_len; |
886 | baca51fa | bellard | fdctrl->data_pos = 0;
|
887 | baca51fa | bellard | FD_SET_STATE(fdctrl->data_state, FD_STATE_STATUS); |
888 | 8977f3c1 | bellard | if (do_irq)
|
889 | baca51fa | bellard | fdctrl_raise_irq(fdctrl, 0x00);
|
890 | 8977f3c1 | bellard | } |
891 | 8977f3c1 | bellard | |
892 | 8977f3c1 | bellard | /* Set an error: unimplemented/unknown command */
|
893 | baca51fa | bellard | static void fdctrl_unimplemented (fdctrl_t *fdctrl) |
894 | 8977f3c1 | bellard | { |
895 | 8977f3c1 | bellard | #if 0
|
896 | baca51fa | bellard | fdrive_t *cur_drv;
|
897 | baca51fa | bellard | |
898 | baca51fa | bellard | cur_drv = get_cur_drv(fdctrl);
|
899 | baca51fa | bellard | fdctrl->fifo[0] = 0x60 | (cur_drv->head << 1) | fdctrl->cur_drv;
|
900 | baca51fa | bellard | fdctrl->fifo[1] = 0x00;
|
901 | baca51fa | bellard | fdctrl->fifo[2] = 0x00;
|
902 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 3, 1);
|
903 | 8977f3c1 | bellard | #else
|
904 | baca51fa | bellard | // fdctrl_reset_fifo(fdctrl);
|
905 | baca51fa | bellard | fdctrl->fifo[0] = 0x80; |
906 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 1, 0); |
907 | 8977f3c1 | bellard | #endif
|
908 | 8977f3c1 | bellard | } |
909 | 8977f3c1 | bellard | |
910 | 8977f3c1 | bellard | /* Callback for transfer end (stop or abort) */
|
911 | baca51fa | bellard | static void fdctrl_stop_transfer (fdctrl_t *fdctrl, uint8_t status0, |
912 | baca51fa | bellard | uint8_t status1, uint8_t status2) |
913 | 8977f3c1 | bellard | { |
914 | baca51fa | bellard | fdrive_t *cur_drv; |
915 | 8977f3c1 | bellard | |
916 | baca51fa | bellard | cur_drv = get_cur_drv(fdctrl); |
917 | 8977f3c1 | bellard | FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
|
918 | 8977f3c1 | bellard | status0, status1, status2, |
919 | baca51fa | bellard | status0 | (cur_drv->head << 1) | fdctrl->cur_drv);
|
920 | baca51fa | bellard | fdctrl->fifo[0] = status0 | (cur_drv->head << 1) | fdctrl->cur_drv; |
921 | baca51fa | bellard | fdctrl->fifo[1] = status1;
|
922 | baca51fa | bellard | fdctrl->fifo[2] = status2;
|
923 | baca51fa | bellard | fdctrl->fifo[3] = cur_drv->track;
|
924 | baca51fa | bellard | fdctrl->fifo[4] = cur_drv->head;
|
925 | baca51fa | bellard | fdctrl->fifo[5] = cur_drv->sect;
|
926 | baca51fa | bellard | fdctrl->fifo[6] = FD_SECTOR_SC;
|
927 | baca51fa | bellard | fdctrl->data_dir = FD_DIR_READ; |
928 | baca51fa | bellard | if (fdctrl->state & FD_CTRL_BUSY)
|
929 | baca51fa | bellard | DMA_release_DREQ(fdctrl->dma_chann); |
930 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 7, 1); |
931 | 8977f3c1 | bellard | } |
932 | 8977f3c1 | bellard | |
933 | 8977f3c1 | bellard | /* Prepare a data transfer (either DMA or FIFO) */
|
934 | baca51fa | bellard | static void fdctrl_start_transfer (fdctrl_t *fdctrl, int direction) |
935 | 8977f3c1 | bellard | { |
936 | baca51fa | bellard | fdrive_t *cur_drv; |
937 | 8977f3c1 | bellard | uint8_t kh, kt, ks; |
938 | 8977f3c1 | bellard | int did_seek;
|
939 | 8977f3c1 | bellard | |
940 | baca51fa | bellard | fdctrl->cur_drv = fdctrl->fifo[1] & 1; |
941 | baca51fa | bellard | cur_drv = get_cur_drv(fdctrl); |
942 | baca51fa | bellard | kt = fdctrl->fifo[2];
|
943 | baca51fa | bellard | kh = fdctrl->fifo[3];
|
944 | baca51fa | bellard | ks = fdctrl->fifo[4];
|
945 | 8977f3c1 | bellard | FLOPPY_DPRINTF("Start tranfert at %d %d %02x %02x (%d)\n",
|
946 | baca51fa | bellard | fdctrl->cur_drv, kh, kt, ks, |
947 | 8977f3c1 | bellard | _fd_sector(kh, kt, ks, cur_drv->last_sect)); |
948 | 8977f3c1 | bellard | did_seek = 0;
|
949 | baca51fa | bellard | switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & 0x40)) { |
950 | 8977f3c1 | bellard | case 2: |
951 | 8977f3c1 | bellard | /* sect too big */
|
952 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00); |
953 | baca51fa | bellard | fdctrl->fifo[3] = kt;
|
954 | baca51fa | bellard | fdctrl->fifo[4] = kh;
|
955 | baca51fa | bellard | fdctrl->fifo[5] = ks;
|
956 | 8977f3c1 | bellard | return;
|
957 | 8977f3c1 | bellard | case 3: |
958 | 8977f3c1 | bellard | /* track too big */
|
959 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x40, 0x80, 0x00); |
960 | baca51fa | bellard | fdctrl->fifo[3] = kt;
|
961 | baca51fa | bellard | fdctrl->fifo[4] = kh;
|
962 | baca51fa | bellard | fdctrl->fifo[5] = ks;
|
963 | 8977f3c1 | bellard | return;
|
964 | 8977f3c1 | bellard | case 4: |
965 | 8977f3c1 | bellard | /* No seek enabled */
|
966 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00); |
967 | baca51fa | bellard | fdctrl->fifo[3] = kt;
|
968 | baca51fa | bellard | fdctrl->fifo[4] = kh;
|
969 | baca51fa | bellard | fdctrl->fifo[5] = ks;
|
970 | 8977f3c1 | bellard | return;
|
971 | 8977f3c1 | bellard | case 1: |
972 | 8977f3c1 | bellard | did_seek = 1;
|
973 | 8977f3c1 | bellard | break;
|
974 | 8977f3c1 | bellard | default:
|
975 | 8977f3c1 | bellard | break;
|
976 | 8977f3c1 | bellard | } |
977 | 8977f3c1 | bellard | /* Set the FIFO state */
|
978 | baca51fa | bellard | fdctrl->data_dir = direction; |
979 | baca51fa | bellard | fdctrl->data_pos = 0;
|
980 | baca51fa | bellard | FD_SET_STATE(fdctrl->data_state, FD_STATE_DATA); /* FIFO ready for data */
|
981 | baca51fa | bellard | if (fdctrl->fifo[0] & 0x80) |
982 | baca51fa | bellard | fdctrl->data_state |= FD_STATE_MULTI; |
983 | baca51fa | bellard | else
|
984 | baca51fa | bellard | fdctrl->data_state &= ~FD_STATE_MULTI; |
985 | 8977f3c1 | bellard | if (did_seek)
|
986 | baca51fa | bellard | fdctrl->data_state |= FD_STATE_SEEK; |
987 | baca51fa | bellard | else
|
988 | baca51fa | bellard | fdctrl->data_state &= ~FD_STATE_SEEK; |
989 | baca51fa | bellard | if (fdctrl->fifo[5] == 00) { |
990 | baca51fa | bellard | fdctrl->data_len = fdctrl->fifo[8];
|
991 | baca51fa | bellard | } else {
|
992 | baca51fa | bellard | int tmp;
|
993 | baca51fa | bellard | fdctrl->data_len = 128 << fdctrl->fifo[5]; |
994 | baca51fa | bellard | tmp = (cur_drv->last_sect - ks + 1);
|
995 | baca51fa | bellard | if (fdctrl->fifo[0] & 0x80) |
996 | baca51fa | bellard | tmp += cur_drv->last_sect; |
997 | baca51fa | bellard | fdctrl->data_len *= tmp; |
998 | baca51fa | bellard | } |
999 | baca51fa | bellard | if (fdctrl->dma_en) {
|
1000 | 8977f3c1 | bellard | int dma_mode;
|
1001 | 8977f3c1 | bellard | /* DMA transfer are enabled. Check if DMA channel is well programmed */
|
1002 | baca51fa | bellard | dma_mode = DMA_get_channel_mode(fdctrl->dma_chann); |
1003 | 8977f3c1 | bellard | dma_mode = (dma_mode >> 2) & 3; |
1004 | baca51fa | bellard | FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
|
1005 | baca51fa | bellard | dma_mode, direction, |
1006 | baca51fa | bellard | (128 << fdctrl->fifo[5]) * |
1007 | baca51fa | bellard | (cur_drv->last_sect - ks + 1), fdctrl->data_len);
|
1008 | 8977f3c1 | bellard | if (((direction == FD_DIR_SCANE || direction == FD_DIR_SCANL ||
|
1009 | 8977f3c1 | bellard | direction == FD_DIR_SCANH) && dma_mode == 0) ||
|
1010 | 8977f3c1 | bellard | (direction == FD_DIR_WRITE && dma_mode == 2) ||
|
1011 | 8977f3c1 | bellard | (direction == FD_DIR_READ && dma_mode == 1)) {
|
1012 | 8977f3c1 | bellard | /* No access is allowed until DMA transfer has completed */
|
1013 | baca51fa | bellard | fdctrl->state |= FD_CTRL_BUSY; |
1014 | 8977f3c1 | bellard | /* Now, we just have to wait for the DMA controler to
|
1015 | 8977f3c1 | bellard | * recall us...
|
1016 | 8977f3c1 | bellard | */
|
1017 | baca51fa | bellard | DMA_hold_DREQ(fdctrl->dma_chann); |
1018 | baca51fa | bellard | DMA_schedule(fdctrl->dma_chann); |
1019 | 8977f3c1 | bellard | return;
|
1020 | baca51fa | bellard | } else {
|
1021 | baca51fa | bellard | FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, direction);
|
1022 | 8977f3c1 | bellard | } |
1023 | 8977f3c1 | bellard | } |
1024 | 8977f3c1 | bellard | FLOPPY_DPRINTF("start non-DMA transfer\n");
|
1025 | 8977f3c1 | bellard | /* IO based transfer: calculate len */
|
1026 | baca51fa | bellard | fdctrl_raise_irq(fdctrl, 0x00);
|
1027 | 8977f3c1 | bellard | |
1028 | 8977f3c1 | bellard | return;
|
1029 | 8977f3c1 | bellard | } |
1030 | 8977f3c1 | bellard | |
1031 | 8977f3c1 | bellard | /* Prepare a transfer of deleted data */
|
1032 | baca51fa | bellard | static void fdctrl_start_transfer_del (fdctrl_t *fdctrl, int direction) |
1033 | 8977f3c1 | bellard | { |
1034 | 8977f3c1 | bellard | /* We don't handle deleted data,
|
1035 | 8977f3c1 | bellard | * so we don't return *ANYTHING*
|
1036 | 8977f3c1 | bellard | */
|
1037 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00); |
1038 | 8977f3c1 | bellard | } |
1039 | 8977f3c1 | bellard | |
1040 | 8977f3c1 | bellard | /* handlers for DMA transfers */
|
1041 | f9e92e97 | bellard | static int fdctrl_transfer_handler (void *opaque, target_ulong addr, int size) |
1042 | 8977f3c1 | bellard | { |
1043 | baca51fa | bellard | fdctrl_t *fdctrl; |
1044 | baca51fa | bellard | fdrive_t *cur_drv; |
1045 | baca51fa | bellard | int len, start_pos, rel_pos;
|
1046 | 8977f3c1 | bellard | uint8_t status0 = 0x00, status1 = 0x00, status2 = 0x00; |
1047 | 8977f3c1 | bellard | |
1048 | baca51fa | bellard | fdctrl = opaque; |
1049 | baca51fa | bellard | fdctrl_reset_irq(fdctrl); |
1050 | baca51fa | bellard | if (!(fdctrl->state & FD_CTRL_BUSY)) {
|
1051 | 8977f3c1 | bellard | FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
|
1052 | 8977f3c1 | bellard | return 0; |
1053 | 8977f3c1 | bellard | } |
1054 | baca51fa | bellard | cur_drv = get_cur_drv(fdctrl); |
1055 | baca51fa | bellard | if (fdctrl->data_dir == FD_DIR_SCANE || fdctrl->data_dir == FD_DIR_SCANL ||
|
1056 | baca51fa | bellard | fdctrl->data_dir == FD_DIR_SCANH) |
1057 | 8977f3c1 | bellard | status2 = 0x04;
|
1058 | baca51fa | bellard | if (size > fdctrl->data_len)
|
1059 | baca51fa | bellard | size = fdctrl->data_len; |
1060 | 69e5bc90 | bellard | if (cur_drv->bs == NULL) { |
1061 | baca51fa | bellard | if (fdctrl->data_dir == FD_DIR_WRITE)
|
1062 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00); |
1063 | baca51fa | bellard | else
|
1064 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00); |
1065 | baca51fa | bellard | len = 0;
|
1066 | 69e5bc90 | bellard | goto transfer_error;
|
1067 | 69e5bc90 | bellard | } |
1068 | baca51fa | bellard | rel_pos = fdctrl->data_pos % FD_SECTOR_LEN; |
1069 | baca51fa | bellard | for (start_pos = fdctrl->data_pos; fdctrl->data_pos < size;) {
|
1070 | baca51fa | bellard | len = size - fdctrl->data_pos; |
1071 | baca51fa | bellard | if (len + rel_pos > FD_SECTOR_LEN)
|
1072 | baca51fa | bellard | len = FD_SECTOR_LEN - rel_pos; |
1073 | baca51fa | bellard | FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x %02x "
|
1074 | baca51fa | bellard | "(%d-0x%08x 0x%08x)\n", len, size, fdctrl->data_pos,
|
1075 | baca51fa | bellard | fdctrl->data_len, fdctrl->cur_drv, cur_drv->head, |
1076 | baca51fa | bellard | cur_drv->track, cur_drv->sect, fd_sector(cur_drv), |
1077 | baca51fa | bellard | fd_sector(cur_drv) * 512, addr);
|
1078 | baca51fa | bellard | if (fdctrl->data_dir != FD_DIR_WRITE ||
|
1079 | baca51fa | bellard | len < FD_SECTOR_LEN || rel_pos != 0) {
|
1080 | baca51fa | bellard | /* READ & SCAN commands and realign to a sector for WRITE */
|
1081 | baca51fa | bellard | if (bdrv_read(cur_drv->bs, fd_sector(cur_drv),
|
1082 | baca51fa | bellard | fdctrl->fifo, 1) < 0) { |
1083 | 8977f3c1 | bellard | FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
|
1084 | 8977f3c1 | bellard | fd_sector(cur_drv)); |
1085 | 8977f3c1 | bellard | /* Sure, image size is too small... */
|
1086 | baca51fa | bellard | memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
|
1087 | 8977f3c1 | bellard | } |
1088 | 8977f3c1 | bellard | } |
1089 | baca51fa | bellard | switch (fdctrl->data_dir) {
|
1090 | baca51fa | bellard | case FD_DIR_READ:
|
1091 | baca51fa | bellard | /* READ commands */
|
1092 | baca51fa | bellard | cpu_physical_memory_write(addr + fdctrl->data_pos, |
1093 | baca51fa | bellard | fdctrl->fifo + rel_pos, len); |
1094 | baca51fa | bellard | break;
|
1095 | baca51fa | bellard | case FD_DIR_WRITE:
|
1096 | baca51fa | bellard | /* WRITE commands */
|
1097 | baca51fa | bellard | cpu_physical_memory_read(addr + fdctrl->data_pos, |
1098 | baca51fa | bellard | fdctrl->fifo + rel_pos, len); |
1099 | baca51fa | bellard | if (bdrv_write(cur_drv->bs, fd_sector(cur_drv),
|
1100 | baca51fa | bellard | fdctrl->fifo, 1) < 0) { |
1101 | baca51fa | bellard | FLOPPY_ERROR("writting sector %d\n", fd_sector(cur_drv));
|
1102 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00); |
1103 | baca51fa | bellard | goto transfer_error;
|
1104 | f9e92e97 | bellard | } |
1105 | baca51fa | bellard | break;
|
1106 | baca51fa | bellard | default:
|
1107 | baca51fa | bellard | /* SCAN commands */
|
1108 | baca51fa | bellard | { |
1109 | baca51fa | bellard | uint8_t tmpbuf[FD_SECTOR_LEN]; |
1110 | baca51fa | bellard | int ret;
|
1111 | baca51fa | bellard | cpu_physical_memory_read(addr + fdctrl->data_pos, |
1112 | baca51fa | bellard | tmpbuf, len); |
1113 | baca51fa | bellard | ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len); |
1114 | 8977f3c1 | bellard | if (ret == 0) { |
1115 | 8977f3c1 | bellard | status2 = 0x08;
|
1116 | 8977f3c1 | bellard | goto end_transfer;
|
1117 | 8977f3c1 | bellard | } |
1118 | baca51fa | bellard | if ((ret < 0 && fdctrl->data_dir == FD_DIR_SCANL) || |
1119 | baca51fa | bellard | (ret > 0 && fdctrl->data_dir == FD_DIR_SCANH)) {
|
1120 | 8977f3c1 | bellard | status2 = 0x00;
|
1121 | 8977f3c1 | bellard | goto end_transfer;
|
1122 | 8977f3c1 | bellard | } |
1123 | 8977f3c1 | bellard | } |
1124 | baca51fa | bellard | break;
|
1125 | 8977f3c1 | bellard | } |
1126 | baca51fa | bellard | fdctrl->data_pos += len; |
1127 | baca51fa | bellard | rel_pos = fdctrl->data_pos % FD_SECTOR_LEN; |
1128 | baca51fa | bellard | if (rel_pos == 0) { |
1129 | 8977f3c1 | bellard | /* Seek to next sector */
|
1130 | baca51fa | bellard | cur_drv->sect++; |
1131 | baca51fa | bellard | FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d) (%d)\n",
|
1132 | baca51fa | bellard | cur_drv->head, cur_drv->track, cur_drv->sect, |
1133 | baca51fa | bellard | fd_sector(cur_drv), |
1134 | baca51fa | bellard | fdctrl->data_pos - size); |
1135 | baca51fa | bellard | if (cur_drv->sect > cur_drv->last_sect) {
|
1136 | baca51fa | bellard | cur_drv->sect = 1;
|
1137 | baca51fa | bellard | if (FD_MULTI_TRACK(fdctrl->data_state)) {
|
1138 | baca51fa | bellard | if (cur_drv->head == 0 && |
1139 | baca51fa | bellard | (cur_drv->flags & FDISK_DBL_SIDES) != 0) {
|
1140 | 8977f3c1 | bellard | cur_drv->head = 1;
|
1141 | 8977f3c1 | bellard | } else {
|
1142 | 8977f3c1 | bellard | cur_drv->head = 0;
|
1143 | baca51fa | bellard | cur_drv->track++; |
1144 | baca51fa | bellard | if ((cur_drv->flags & FDISK_DBL_SIDES) == 0) |
1145 | baca51fa | bellard | break;
|
1146 | 8977f3c1 | bellard | } |
1147 | 8977f3c1 | bellard | } else {
|
1148 | baca51fa | bellard | cur_drv->track++; |
1149 | baca51fa | bellard | break;
|
1150 | baca51fa | bellard | } |
1151 | baca51fa | bellard | FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
|
1152 | baca51fa | bellard | cur_drv->head, cur_drv->track, |
1153 | baca51fa | bellard | cur_drv->sect, fd_sector(cur_drv)); |
1154 | 8977f3c1 | bellard | } |
1155 | 8977f3c1 | bellard | } |
1156 | 8977f3c1 | bellard | } |
1157 | 8977f3c1 | bellard | end_transfer:
|
1158 | baca51fa | bellard | len = fdctrl->data_pos - start_pos; |
1159 | baca51fa | bellard | FLOPPY_DPRINTF("end transfer %d %d %d\n",
|
1160 | baca51fa | bellard | fdctrl->data_pos, len, fdctrl->data_len); |
1161 | baca51fa | bellard | if (fdctrl->data_dir == FD_DIR_SCANE ||
|
1162 | baca51fa | bellard | fdctrl->data_dir == FD_DIR_SCANL || |
1163 | baca51fa | bellard | fdctrl->data_dir == FD_DIR_SCANH) |
1164 | 8977f3c1 | bellard | status2 = 0x08;
|
1165 | baca51fa | bellard | if (FD_DID_SEEK(fdctrl->data_state))
|
1166 | 8977f3c1 | bellard | status0 |= 0x20;
|
1167 | baca51fa | bellard | fdctrl->data_len -= len; |
1168 | baca51fa | bellard | // if (fdctrl->data_len == 0)
|
1169 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, status0, status1, status2); |
1170 | 8977f3c1 | bellard | transfer_error:
|
1171 | 8977f3c1 | bellard | |
1172 | baca51fa | bellard | return len;
|
1173 | 8977f3c1 | bellard | } |
1174 | 8977f3c1 | bellard | |
1175 | 8977f3c1 | bellard | /* Data register : 0x05 */
|
1176 | baca51fa | bellard | static uint32_t fdctrl_read_data (fdctrl_t *fdctrl)
|
1177 | 8977f3c1 | bellard | { |
1178 | baca51fa | bellard | fdrive_t *cur_drv; |
1179 | 8977f3c1 | bellard | uint32_t retval = 0;
|
1180 | 8977f3c1 | bellard | int pos, len;
|
1181 | 8977f3c1 | bellard | |
1182 | baca51fa | bellard | fdctrl_reset_irq(fdctrl); |
1183 | baca51fa | bellard | cur_drv = get_cur_drv(fdctrl); |
1184 | baca51fa | bellard | fdctrl->state &= ~FD_CTRL_SLEEP; |
1185 | baca51fa | bellard | if (FD_STATE(fdctrl->data_state) == FD_STATE_CMD) {
|
1186 | 8977f3c1 | bellard | FLOPPY_ERROR("can't read data in CMD state\n");
|
1187 | 8977f3c1 | bellard | return 0; |
1188 | 8977f3c1 | bellard | } |
1189 | baca51fa | bellard | pos = fdctrl->data_pos; |
1190 | baca51fa | bellard | if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA) {
|
1191 | 8977f3c1 | bellard | pos %= FD_SECTOR_LEN; |
1192 | 8977f3c1 | bellard | if (pos == 0) { |
1193 | baca51fa | bellard | len = fdctrl->data_len - fdctrl->data_pos; |
1194 | 8977f3c1 | bellard | if (len > FD_SECTOR_LEN)
|
1195 | 8977f3c1 | bellard | len = FD_SECTOR_LEN; |
1196 | 8977f3c1 | bellard | bdrv_read(cur_drv->bs, fd_sector(cur_drv), |
1197 | baca51fa | bellard | fdctrl->fifo, len); |
1198 | 8977f3c1 | bellard | } |
1199 | 8977f3c1 | bellard | } |
1200 | baca51fa | bellard | retval = fdctrl->fifo[pos]; |
1201 | baca51fa | bellard | if (++fdctrl->data_pos == fdctrl->data_len) {
|
1202 | baca51fa | bellard | fdctrl->data_pos = 0;
|
1203 | 8977f3c1 | bellard | /* Switch from transfert mode to status mode
|
1204 | 8977f3c1 | bellard | * then from status mode to command mode
|
1205 | 8977f3c1 | bellard | */
|
1206 | baca51fa | bellard | if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA)
|
1207 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00); |
1208 | 8977f3c1 | bellard | else
|
1209 | baca51fa | bellard | fdctrl_reset_fifo(fdctrl); |
1210 | 8977f3c1 | bellard | } |
1211 | 8977f3c1 | bellard | FLOPPY_DPRINTF("data register: 0x%02x\n", retval);
|
1212 | 8977f3c1 | bellard | |
1213 | 8977f3c1 | bellard | return retval;
|
1214 | 8977f3c1 | bellard | } |
1215 | 8977f3c1 | bellard | |
1216 | baca51fa | bellard | static void fdctrl_format_sector (fdctrl_t *fdctrl) |
1217 | 8977f3c1 | bellard | { |
1218 | baca51fa | bellard | fdrive_t *cur_drv; |
1219 | baca51fa | bellard | uint8_t kh, kt, ks; |
1220 | baca51fa | bellard | int did_seek;
|
1221 | 8977f3c1 | bellard | |
1222 | baca51fa | bellard | fdctrl->cur_drv = fdctrl->fifo[1] & 1; |
1223 | baca51fa | bellard | cur_drv = get_cur_drv(fdctrl); |
1224 | baca51fa | bellard | kt = fdctrl->fifo[6];
|
1225 | baca51fa | bellard | kh = fdctrl->fifo[7];
|
1226 | baca51fa | bellard | ks = fdctrl->fifo[8];
|
1227 | baca51fa | bellard | FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
|
1228 | baca51fa | bellard | fdctrl->cur_drv, kh, kt, ks, |
1229 | baca51fa | bellard | _fd_sector(kh, kt, ks, cur_drv->last_sect)); |
1230 | baca51fa | bellard | did_seek = 0;
|
1231 | baca51fa | bellard | switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & 0x40)) { |
1232 | baca51fa | bellard | case 2: |
1233 | baca51fa | bellard | /* sect too big */
|
1234 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00); |
1235 | baca51fa | bellard | fdctrl->fifo[3] = kt;
|
1236 | baca51fa | bellard | fdctrl->fifo[4] = kh;
|
1237 | baca51fa | bellard | fdctrl->fifo[5] = ks;
|
1238 | baca51fa | bellard | return;
|
1239 | baca51fa | bellard | case 3: |
1240 | baca51fa | bellard | /* track too big */
|
1241 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x40, 0x80, 0x00); |
1242 | baca51fa | bellard | fdctrl->fifo[3] = kt;
|
1243 | baca51fa | bellard | fdctrl->fifo[4] = kh;
|
1244 | baca51fa | bellard | fdctrl->fifo[5] = ks;
|
1245 | baca51fa | bellard | return;
|
1246 | baca51fa | bellard | case 4: |
1247 | baca51fa | bellard | /* No seek enabled */
|
1248 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00); |
1249 | baca51fa | bellard | fdctrl->fifo[3] = kt;
|
1250 | baca51fa | bellard | fdctrl->fifo[4] = kh;
|
1251 | baca51fa | bellard | fdctrl->fifo[5] = ks;
|
1252 | baca51fa | bellard | return;
|
1253 | baca51fa | bellard | case 1: |
1254 | baca51fa | bellard | did_seek = 1;
|
1255 | baca51fa | bellard | fdctrl->data_state |= FD_STATE_SEEK; |
1256 | baca51fa | bellard | break;
|
1257 | baca51fa | bellard | default:
|
1258 | baca51fa | bellard | break;
|
1259 | baca51fa | bellard | } |
1260 | baca51fa | bellard | memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
|
1261 | baca51fa | bellard | if (cur_drv->bs == NULL || |
1262 | baca51fa | bellard | bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) { |
1263 | baca51fa | bellard | FLOPPY_ERROR("formating sector %d\n", fd_sector(cur_drv));
|
1264 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00); |
1265 | baca51fa | bellard | } else {
|
1266 | baca51fa | bellard | if (cur_drv->sect == cur_drv->last_sect) {
|
1267 | baca51fa | bellard | fdctrl->data_state &= ~FD_STATE_FORMAT; |
1268 | baca51fa | bellard | /* Last sector done */
|
1269 | baca51fa | bellard | if (FD_DID_SEEK(fdctrl->data_state))
|
1270 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00); |
1271 | baca51fa | bellard | else
|
1272 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); |
1273 | baca51fa | bellard | } else {
|
1274 | baca51fa | bellard | /* More to do */
|
1275 | baca51fa | bellard | fdctrl->data_pos = 0;
|
1276 | baca51fa | bellard | fdctrl->data_len = 4;
|
1277 | baca51fa | bellard | } |
1278 | baca51fa | bellard | } |
1279 | baca51fa | bellard | } |
1280 | baca51fa | bellard | |
1281 | baca51fa | bellard | static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value) |
1282 | baca51fa | bellard | { |
1283 | baca51fa | bellard | fdrive_t *cur_drv; |
1284 | baca51fa | bellard | |
1285 | baca51fa | bellard | fdctrl_reset_irq(fdctrl); |
1286 | baca51fa | bellard | cur_drv = get_cur_drv(fdctrl); |
1287 | 8977f3c1 | bellard | /* Reset mode */
|
1288 | baca51fa | bellard | if (fdctrl->state & FD_CTRL_RESET) {
|
1289 | 8977f3c1 | bellard | FLOPPY_DPRINTF("Floppy controler in RESET state !\n");
|
1290 | 8977f3c1 | bellard | return;
|
1291 | 8977f3c1 | bellard | } |
1292 | baca51fa | bellard | fdctrl->state &= ~FD_CTRL_SLEEP; |
1293 | baca51fa | bellard | if (FD_STATE(fdctrl->data_state) == FD_STATE_STATUS) {
|
1294 | 8977f3c1 | bellard | FLOPPY_ERROR("can't write data in status mode\n");
|
1295 | 8977f3c1 | bellard | return;
|
1296 | 8977f3c1 | bellard | } |
1297 | 8977f3c1 | bellard | /* Is it write command time ? */
|
1298 | baca51fa | bellard | if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA) {
|
1299 | 8977f3c1 | bellard | /* FIFO data write */
|
1300 | baca51fa | bellard | fdctrl->fifo[fdctrl->data_pos++] = value; |
1301 | baca51fa | bellard | if (fdctrl->data_pos % FD_SECTOR_LEN == (FD_SECTOR_LEN - 1) || |
1302 | baca51fa | bellard | fdctrl->data_pos == fdctrl->data_len) { |
1303 | 8977f3c1 | bellard | bdrv_write(cur_drv->bs, fd_sector(cur_drv), |
1304 | baca51fa | bellard | fdctrl->fifo, FD_SECTOR_LEN); |
1305 | 8977f3c1 | bellard | } |
1306 | 8977f3c1 | bellard | /* Switch from transfert mode to status mode
|
1307 | 8977f3c1 | bellard | * then from status mode to command mode
|
1308 | 8977f3c1 | bellard | */
|
1309 | baca51fa | bellard | if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA)
|
1310 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00); |
1311 | 8977f3c1 | bellard | return;
|
1312 | 8977f3c1 | bellard | } |
1313 | baca51fa | bellard | if (fdctrl->data_pos == 0) { |
1314 | 8977f3c1 | bellard | /* Command */
|
1315 | 8977f3c1 | bellard | switch (value & 0x5F) { |
1316 | 8977f3c1 | bellard | case 0x46: |
1317 | 8977f3c1 | bellard | /* READ variants */
|
1318 | 8977f3c1 | bellard | FLOPPY_DPRINTF("READ command\n");
|
1319 | 8977f3c1 | bellard | /* 8 parameters cmd */
|
1320 | baca51fa | bellard | fdctrl->data_len = 9;
|
1321 | 8977f3c1 | bellard | goto enqueue;
|
1322 | 8977f3c1 | bellard | case 0x4C: |
1323 | 8977f3c1 | bellard | /* READ_DELETED variants */
|
1324 | 8977f3c1 | bellard | FLOPPY_DPRINTF("READ_DELETED command\n");
|
1325 | 8977f3c1 | bellard | /* 8 parameters cmd */
|
1326 | baca51fa | bellard | fdctrl->data_len = 9;
|
1327 | 8977f3c1 | bellard | goto enqueue;
|
1328 | 8977f3c1 | bellard | case 0x50: |
1329 | 8977f3c1 | bellard | /* SCAN_EQUAL variants */
|
1330 | 8977f3c1 | bellard | FLOPPY_DPRINTF("SCAN_EQUAL command\n");
|
1331 | 8977f3c1 | bellard | /* 8 parameters cmd */
|
1332 | baca51fa | bellard | fdctrl->data_len = 9;
|
1333 | 8977f3c1 | bellard | goto enqueue;
|
1334 | 8977f3c1 | bellard | case 0x56: |
1335 | 8977f3c1 | bellard | /* VERIFY variants */
|
1336 | 8977f3c1 | bellard | FLOPPY_DPRINTF("VERIFY command\n");
|
1337 | 8977f3c1 | bellard | /* 8 parameters cmd */
|
1338 | baca51fa | bellard | fdctrl->data_len = 9;
|
1339 | 8977f3c1 | bellard | goto enqueue;
|
1340 | 8977f3c1 | bellard | case 0x59: |
1341 | 8977f3c1 | bellard | /* SCAN_LOW_OR_EQUAL variants */
|
1342 | 8977f3c1 | bellard | FLOPPY_DPRINTF("SCAN_LOW_OR_EQUAL command\n");
|
1343 | 8977f3c1 | bellard | /* 8 parameters cmd */
|
1344 | baca51fa | bellard | fdctrl->data_len = 9;
|
1345 | 8977f3c1 | bellard | goto enqueue;
|
1346 | 8977f3c1 | bellard | case 0x5D: |
1347 | 8977f3c1 | bellard | /* SCAN_HIGH_OR_EQUAL variants */
|
1348 | 8977f3c1 | bellard | FLOPPY_DPRINTF("SCAN_HIGH_OR_EQUAL command\n");
|
1349 | 8977f3c1 | bellard | /* 8 parameters cmd */
|
1350 | baca51fa | bellard | fdctrl->data_len = 9;
|
1351 | 8977f3c1 | bellard | goto enqueue;
|
1352 | 8977f3c1 | bellard | default:
|
1353 | 8977f3c1 | bellard | break;
|
1354 | 8977f3c1 | bellard | } |
1355 | 8977f3c1 | bellard | switch (value & 0x7F) { |
1356 | 8977f3c1 | bellard | case 0x45: |
1357 | 8977f3c1 | bellard | /* WRITE variants */
|
1358 | 8977f3c1 | bellard | FLOPPY_DPRINTF("WRITE command\n");
|
1359 | 8977f3c1 | bellard | /* 8 parameters cmd */
|
1360 | baca51fa | bellard | fdctrl->data_len = 9;
|
1361 | 8977f3c1 | bellard | goto enqueue;
|
1362 | 8977f3c1 | bellard | case 0x49: |
1363 | 8977f3c1 | bellard | /* WRITE_DELETED variants */
|
1364 | 8977f3c1 | bellard | FLOPPY_DPRINTF("WRITE_DELETED command\n");
|
1365 | 8977f3c1 | bellard | /* 8 parameters cmd */
|
1366 | baca51fa | bellard | fdctrl->data_len = 9;
|
1367 | 8977f3c1 | bellard | goto enqueue;
|
1368 | 8977f3c1 | bellard | default:
|
1369 | 8977f3c1 | bellard | break;
|
1370 | 8977f3c1 | bellard | } |
1371 | 8977f3c1 | bellard | switch (value) {
|
1372 | 8977f3c1 | bellard | case 0x03: |
1373 | 8977f3c1 | bellard | /* SPECIFY */
|
1374 | 8977f3c1 | bellard | FLOPPY_DPRINTF("SPECIFY command\n");
|
1375 | 8977f3c1 | bellard | /* 1 parameter cmd */
|
1376 | baca51fa | bellard | fdctrl->data_len = 3;
|
1377 | 8977f3c1 | bellard | goto enqueue;
|
1378 | 8977f3c1 | bellard | case 0x04: |
1379 | 8977f3c1 | bellard | /* SENSE_DRIVE_STATUS */
|
1380 | 8977f3c1 | bellard | FLOPPY_DPRINTF("SENSE_DRIVE_STATUS command\n");
|
1381 | 8977f3c1 | bellard | /* 1 parameter cmd */
|
1382 | baca51fa | bellard | fdctrl->data_len = 2;
|
1383 | 8977f3c1 | bellard | goto enqueue;
|
1384 | 8977f3c1 | bellard | case 0x07: |
1385 | 8977f3c1 | bellard | /* RECALIBRATE */
|
1386 | 8977f3c1 | bellard | FLOPPY_DPRINTF("RECALIBRATE command\n");
|
1387 | 8977f3c1 | bellard | /* 1 parameter cmd */
|
1388 | baca51fa | bellard | fdctrl->data_len = 2;
|
1389 | 8977f3c1 | bellard | goto enqueue;
|
1390 | 8977f3c1 | bellard | case 0x08: |
1391 | 8977f3c1 | bellard | /* SENSE_INTERRUPT_STATUS */
|
1392 | 8977f3c1 | bellard | FLOPPY_DPRINTF("SENSE_INTERRUPT_STATUS command (%02x)\n",
|
1393 | baca51fa | bellard | fdctrl->int_status); |
1394 | 8977f3c1 | bellard | /* No parameters cmd: returns status if no interrupt */
|
1395 | baca51fa | bellard | fdctrl->fifo[0] =
|
1396 | baca51fa | bellard | fdctrl->int_status | (cur_drv->head << 2) | fdctrl->cur_drv;
|
1397 | baca51fa | bellard | fdctrl->fifo[1] = cur_drv->track;
|
1398 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 2, 0); |
1399 | baca51fa | bellard | fdctrl_reset_irq(fdctrl); |
1400 | baca51fa | bellard | fdctrl->int_status = 0xC0;
|
1401 | 8977f3c1 | bellard | return;
|
1402 | 8977f3c1 | bellard | case 0x0E: |
1403 | 8977f3c1 | bellard | /* DUMPREG */
|
1404 | 8977f3c1 | bellard | FLOPPY_DPRINTF("DUMPREG command\n");
|
1405 | 8977f3c1 | bellard | /* Drives position */
|
1406 | baca51fa | bellard | fdctrl->fifo[0] = drv0(fdctrl)->track;
|
1407 | baca51fa | bellard | fdctrl->fifo[1] = drv1(fdctrl)->track;
|
1408 | baca51fa | bellard | fdctrl->fifo[2] = 0; |
1409 | baca51fa | bellard | fdctrl->fifo[3] = 0; |
1410 | 8977f3c1 | bellard | /* timers */
|
1411 | baca51fa | bellard | fdctrl->fifo[4] = fdctrl->timer0;
|
1412 | baca51fa | bellard | fdctrl->fifo[5] = (fdctrl->timer1 << 1) | fdctrl->dma_en; |
1413 | baca51fa | bellard | fdctrl->fifo[6] = cur_drv->last_sect;
|
1414 | baca51fa | bellard | fdctrl->fifo[7] = (fdctrl->lock << 7) | |
1415 | 8977f3c1 | bellard | (cur_drv->perpendicular << 2);
|
1416 | baca51fa | bellard | fdctrl->fifo[8] = fdctrl->config;
|
1417 | baca51fa | bellard | fdctrl->fifo[9] = fdctrl->precomp_trk;
|
1418 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 10, 0); |
1419 | 8977f3c1 | bellard | return;
|
1420 | 8977f3c1 | bellard | case 0x0F: |
1421 | 8977f3c1 | bellard | /* SEEK */
|
1422 | 8977f3c1 | bellard | FLOPPY_DPRINTF("SEEK command\n");
|
1423 | 8977f3c1 | bellard | /* 2 parameters cmd */
|
1424 | baca51fa | bellard | fdctrl->data_len = 3;
|
1425 | 8977f3c1 | bellard | goto enqueue;
|
1426 | 8977f3c1 | bellard | case 0x10: |
1427 | 8977f3c1 | bellard | /* VERSION */
|
1428 | 8977f3c1 | bellard | FLOPPY_DPRINTF("VERSION command\n");
|
1429 | 8977f3c1 | bellard | /* No parameters cmd */
|
1430 | 8977f3c1 | bellard | /* Controler's version */
|
1431 | baca51fa | bellard | fdctrl->fifo[0] = fdctrl->version;
|
1432 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 1, 1); |
1433 | 8977f3c1 | bellard | return;
|
1434 | 8977f3c1 | bellard | case 0x12: |
1435 | 8977f3c1 | bellard | /* PERPENDICULAR_MODE */
|
1436 | 8977f3c1 | bellard | FLOPPY_DPRINTF("PERPENDICULAR_MODE command\n");
|
1437 | 8977f3c1 | bellard | /* 1 parameter cmd */
|
1438 | baca51fa | bellard | fdctrl->data_len = 2;
|
1439 | 8977f3c1 | bellard | goto enqueue;
|
1440 | 8977f3c1 | bellard | case 0x13: |
1441 | 8977f3c1 | bellard | /* CONFIGURE */
|
1442 | 8977f3c1 | bellard | FLOPPY_DPRINTF("CONFIGURE command\n");
|
1443 | 8977f3c1 | bellard | /* 3 parameters cmd */
|
1444 | baca51fa | bellard | fdctrl->data_len = 4;
|
1445 | 8977f3c1 | bellard | goto enqueue;
|
1446 | 8977f3c1 | bellard | case 0x14: |
1447 | 8977f3c1 | bellard | /* UNLOCK */
|
1448 | 8977f3c1 | bellard | FLOPPY_DPRINTF("UNLOCK command\n");
|
1449 | 8977f3c1 | bellard | /* No parameters cmd */
|
1450 | baca51fa | bellard | fdctrl->lock = 0;
|
1451 | baca51fa | bellard | fdctrl->fifo[0] = 0; |
1452 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 1, 0); |
1453 | 8977f3c1 | bellard | return;
|
1454 | 8977f3c1 | bellard | case 0x17: |
1455 | 8977f3c1 | bellard | /* POWERDOWN_MODE */
|
1456 | 8977f3c1 | bellard | FLOPPY_DPRINTF("POWERDOWN_MODE command\n");
|
1457 | 8977f3c1 | bellard | /* 2 parameters cmd */
|
1458 | baca51fa | bellard | fdctrl->data_len = 3;
|
1459 | 8977f3c1 | bellard | goto enqueue;
|
1460 | 8977f3c1 | bellard | case 0x18: |
1461 | 8977f3c1 | bellard | /* PART_ID */
|
1462 | 8977f3c1 | bellard | FLOPPY_DPRINTF("PART_ID command\n");
|
1463 | 8977f3c1 | bellard | /* No parameters cmd */
|
1464 | baca51fa | bellard | fdctrl->fifo[0] = 0x41; /* Stepping 1 */ |
1465 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 1, 0); |
1466 | 8977f3c1 | bellard | return;
|
1467 | 8977f3c1 | bellard | case 0x2C: |
1468 | 8977f3c1 | bellard | /* SAVE */
|
1469 | 8977f3c1 | bellard | FLOPPY_DPRINTF("SAVE command\n");
|
1470 | 8977f3c1 | bellard | /* No parameters cmd */
|
1471 | baca51fa | bellard | fdctrl->fifo[0] = 0; |
1472 | baca51fa | bellard | fdctrl->fifo[1] = 0; |
1473 | 8977f3c1 | bellard | /* Drives position */
|
1474 | baca51fa | bellard | fdctrl->fifo[2] = drv0(fdctrl)->track;
|
1475 | baca51fa | bellard | fdctrl->fifo[3] = drv1(fdctrl)->track;
|
1476 | baca51fa | bellard | fdctrl->fifo[4] = 0; |
1477 | baca51fa | bellard | fdctrl->fifo[5] = 0; |
1478 | 8977f3c1 | bellard | /* timers */
|
1479 | baca51fa | bellard | fdctrl->fifo[6] = fdctrl->timer0;
|
1480 | baca51fa | bellard | fdctrl->fifo[7] = fdctrl->timer1;
|
1481 | baca51fa | bellard | fdctrl->fifo[8] = cur_drv->last_sect;
|
1482 | baca51fa | bellard | fdctrl->fifo[9] = (fdctrl->lock << 7) | |
1483 | 8977f3c1 | bellard | (cur_drv->perpendicular << 2);
|
1484 | baca51fa | bellard | fdctrl->fifo[10] = fdctrl->config;
|
1485 | baca51fa | bellard | fdctrl->fifo[11] = fdctrl->precomp_trk;
|
1486 | baca51fa | bellard | fdctrl->fifo[12] = fdctrl->pwrd;
|
1487 | baca51fa | bellard | fdctrl->fifo[13] = 0; |
1488 | baca51fa | bellard | fdctrl->fifo[14] = 0; |
1489 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 15, 1); |
1490 | 8977f3c1 | bellard | return;
|
1491 | 8977f3c1 | bellard | case 0x33: |
1492 | 8977f3c1 | bellard | /* OPTION */
|
1493 | 8977f3c1 | bellard | FLOPPY_DPRINTF("OPTION command\n");
|
1494 | 8977f3c1 | bellard | /* 1 parameter cmd */
|
1495 | baca51fa | bellard | fdctrl->data_len = 2;
|
1496 | 8977f3c1 | bellard | goto enqueue;
|
1497 | 8977f3c1 | bellard | case 0x42: |
1498 | 8977f3c1 | bellard | /* READ_TRACK */
|
1499 | 8977f3c1 | bellard | FLOPPY_DPRINTF("READ_TRACK command\n");
|
1500 | 8977f3c1 | bellard | /* 8 parameters cmd */
|
1501 | baca51fa | bellard | fdctrl->data_len = 9;
|
1502 | 8977f3c1 | bellard | goto enqueue;
|
1503 | 8977f3c1 | bellard | case 0x4A: |
1504 | 8977f3c1 | bellard | /* READ_ID */
|
1505 | 8977f3c1 | bellard | FLOPPY_DPRINTF("READ_ID command\n");
|
1506 | 8977f3c1 | bellard | /* 1 parameter cmd */
|
1507 | baca51fa | bellard | fdctrl->data_len = 2;
|
1508 | 8977f3c1 | bellard | goto enqueue;
|
1509 | 8977f3c1 | bellard | case 0x4C: |
1510 | 8977f3c1 | bellard | /* RESTORE */
|
1511 | 8977f3c1 | bellard | FLOPPY_DPRINTF("RESTORE command\n");
|
1512 | 8977f3c1 | bellard | /* 17 parameters cmd */
|
1513 | baca51fa | bellard | fdctrl->data_len = 18;
|
1514 | 8977f3c1 | bellard | goto enqueue;
|
1515 | 8977f3c1 | bellard | case 0x4D: |
1516 | 8977f3c1 | bellard | /* FORMAT_TRACK */
|
1517 | 8977f3c1 | bellard | FLOPPY_DPRINTF("FORMAT_TRACK command\n");
|
1518 | 8977f3c1 | bellard | /* 5 parameters cmd */
|
1519 | baca51fa | bellard | fdctrl->data_len = 6;
|
1520 | 8977f3c1 | bellard | goto enqueue;
|
1521 | 8977f3c1 | bellard | case 0x8E: |
1522 | 8977f3c1 | bellard | /* DRIVE_SPECIFICATION_COMMAND */
|
1523 | 8977f3c1 | bellard | FLOPPY_DPRINTF("DRIVE_SPECIFICATION_COMMAND command\n");
|
1524 | 8977f3c1 | bellard | /* 5 parameters cmd */
|
1525 | baca51fa | bellard | fdctrl->data_len = 6;
|
1526 | 8977f3c1 | bellard | goto enqueue;
|
1527 | 8977f3c1 | bellard | case 0x8F: |
1528 | 8977f3c1 | bellard | /* RELATIVE_SEEK_OUT */
|
1529 | 8977f3c1 | bellard | FLOPPY_DPRINTF("RELATIVE_SEEK_OUT command\n");
|
1530 | 8977f3c1 | bellard | /* 2 parameters cmd */
|
1531 | baca51fa | bellard | fdctrl->data_len = 3;
|
1532 | 8977f3c1 | bellard | goto enqueue;
|
1533 | 8977f3c1 | bellard | case 0x94: |
1534 | 8977f3c1 | bellard | /* LOCK */
|
1535 | 8977f3c1 | bellard | FLOPPY_DPRINTF("LOCK command\n");
|
1536 | 8977f3c1 | bellard | /* No parameters cmd */
|
1537 | baca51fa | bellard | fdctrl->lock = 1;
|
1538 | baca51fa | bellard | fdctrl->fifo[0] = 0x10; |
1539 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 1, 1); |
1540 | 8977f3c1 | bellard | return;
|
1541 | 8977f3c1 | bellard | case 0xCD: |
1542 | 8977f3c1 | bellard | /* FORMAT_AND_WRITE */
|
1543 | 8977f3c1 | bellard | FLOPPY_DPRINTF("FORMAT_AND_WRITE command\n");
|
1544 | 8977f3c1 | bellard | /* 10 parameters cmd */
|
1545 | baca51fa | bellard | fdctrl->data_len = 11;
|
1546 | 8977f3c1 | bellard | goto enqueue;
|
1547 | 8977f3c1 | bellard | case 0xCF: |
1548 | 8977f3c1 | bellard | /* RELATIVE_SEEK_IN */
|
1549 | 8977f3c1 | bellard | FLOPPY_DPRINTF("RELATIVE_SEEK_IN command\n");
|
1550 | 8977f3c1 | bellard | /* 2 parameters cmd */
|
1551 | baca51fa | bellard | fdctrl->data_len = 3;
|
1552 | 8977f3c1 | bellard | goto enqueue;
|
1553 | 8977f3c1 | bellard | default:
|
1554 | 8977f3c1 | bellard | /* Unknown command */
|
1555 | 8977f3c1 | bellard | FLOPPY_ERROR("unknown command: 0x%02x\n", value);
|
1556 | baca51fa | bellard | fdctrl_unimplemented(fdctrl); |
1557 | 8977f3c1 | bellard | return;
|
1558 | 8977f3c1 | bellard | } |
1559 | 8977f3c1 | bellard | } |
1560 | 8977f3c1 | bellard | enqueue:
|
1561 | baca51fa | bellard | FLOPPY_DPRINTF("%s: %02x\n", __func__, value);
|
1562 | baca51fa | bellard | fdctrl->fifo[fdctrl->data_pos] = value; |
1563 | baca51fa | bellard | if (++fdctrl->data_pos == fdctrl->data_len) {
|
1564 | 8977f3c1 | bellard | /* We now have all parameters
|
1565 | 8977f3c1 | bellard | * and will be able to treat the command
|
1566 | 8977f3c1 | bellard | */
|
1567 | baca51fa | bellard | if (fdctrl->data_state & FD_STATE_FORMAT) {
|
1568 | baca51fa | bellard | fdctrl_format_sector(fdctrl); |
1569 | baca51fa | bellard | return;
|
1570 | baca51fa | bellard | } |
1571 | baca51fa | bellard | switch (fdctrl->fifo[0] & 0x1F) { |
1572 | 8977f3c1 | bellard | case 0x06: |
1573 | 8977f3c1 | bellard | { |
1574 | 8977f3c1 | bellard | /* READ variants */
|
1575 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat READ command\n");
|
1576 | baca51fa | bellard | fdctrl_start_transfer(fdctrl, FD_DIR_READ); |
1577 | 8977f3c1 | bellard | return;
|
1578 | 8977f3c1 | bellard | } |
1579 | 8977f3c1 | bellard | case 0x0C: |
1580 | 8977f3c1 | bellard | /* READ_DELETED variants */
|
1581 | 8977f3c1 | bellard | // FLOPPY_DPRINTF("treat READ_DELETED command\n");
|
1582 | 8977f3c1 | bellard | FLOPPY_ERROR("treat READ_DELETED command\n");
|
1583 | baca51fa | bellard | fdctrl_start_transfer_del(fdctrl, FD_DIR_READ); |
1584 | 8977f3c1 | bellard | return;
|
1585 | 8977f3c1 | bellard | case 0x16: |
1586 | 8977f3c1 | bellard | /* VERIFY variants */
|
1587 | 8977f3c1 | bellard | // FLOPPY_DPRINTF("treat VERIFY command\n");
|
1588 | 8977f3c1 | bellard | FLOPPY_ERROR("treat VERIFY command\n");
|
1589 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00); |
1590 | 8977f3c1 | bellard | return;
|
1591 | 8977f3c1 | bellard | case 0x10: |
1592 | 8977f3c1 | bellard | /* SCAN_EQUAL variants */
|
1593 | 8977f3c1 | bellard | // FLOPPY_DPRINTF("treat SCAN_EQUAL command\n");
|
1594 | 8977f3c1 | bellard | FLOPPY_ERROR("treat SCAN_EQUAL command\n");
|
1595 | baca51fa | bellard | fdctrl_start_transfer(fdctrl, FD_DIR_SCANE); |
1596 | 8977f3c1 | bellard | return;
|
1597 | 8977f3c1 | bellard | case 0x19: |
1598 | 8977f3c1 | bellard | /* SCAN_LOW_OR_EQUAL variants */
|
1599 | 8977f3c1 | bellard | // FLOPPY_DPRINTF("treat SCAN_LOW_OR_EQUAL command\n");
|
1600 | 8977f3c1 | bellard | FLOPPY_ERROR("treat SCAN_LOW_OR_EQUAL command\n");
|
1601 | baca51fa | bellard | fdctrl_start_transfer(fdctrl, FD_DIR_SCANL); |
1602 | 8977f3c1 | bellard | return;
|
1603 | 8977f3c1 | bellard | case 0x1D: |
1604 | 8977f3c1 | bellard | /* SCAN_HIGH_OR_EQUAL variants */
|
1605 | 8977f3c1 | bellard | // FLOPPY_DPRINTF("treat SCAN_HIGH_OR_EQUAL command\n");
|
1606 | 8977f3c1 | bellard | FLOPPY_ERROR("treat SCAN_HIGH_OR_EQUAL command\n");
|
1607 | baca51fa | bellard | fdctrl_start_transfer(fdctrl, FD_DIR_SCANH); |
1608 | 8977f3c1 | bellard | return;
|
1609 | 8977f3c1 | bellard | default:
|
1610 | 8977f3c1 | bellard | break;
|
1611 | 8977f3c1 | bellard | } |
1612 | baca51fa | bellard | switch (fdctrl->fifo[0] & 0x3F) { |
1613 | 8977f3c1 | bellard | case 0x05: |
1614 | 8977f3c1 | bellard | /* WRITE variants */
|
1615 | baca51fa | bellard | FLOPPY_DPRINTF("treat WRITE command (%02x)\n", fdctrl->fifo[0]); |
1616 | baca51fa | bellard | fdctrl_start_transfer(fdctrl, FD_DIR_WRITE); |
1617 | 8977f3c1 | bellard | return;
|
1618 | 8977f3c1 | bellard | case 0x09: |
1619 | 8977f3c1 | bellard | /* WRITE_DELETED variants */
|
1620 | 8977f3c1 | bellard | // FLOPPY_DPRINTF("treat WRITE_DELETED command\n");
|
1621 | 8977f3c1 | bellard | FLOPPY_ERROR("treat WRITE_DELETED command\n");
|
1622 | baca51fa | bellard | fdctrl_start_transfer_del(fdctrl, FD_DIR_WRITE); |
1623 | 8977f3c1 | bellard | return;
|
1624 | 8977f3c1 | bellard | default:
|
1625 | 8977f3c1 | bellard | break;
|
1626 | 8977f3c1 | bellard | } |
1627 | baca51fa | bellard | switch (fdctrl->fifo[0]) { |
1628 | 8977f3c1 | bellard | case 0x03: |
1629 | 8977f3c1 | bellard | /* SPECIFY */
|
1630 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat SPECIFY command\n");
|
1631 | baca51fa | bellard | fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF; |
1632 | baca51fa | bellard | fdctrl->timer1 = fdctrl->fifo[1] >> 1; |
1633 | baca51fa | bellard | fdctrl->dma_en = 1 - (fdctrl->fifo[2] & 1) ; |
1634 | 8977f3c1 | bellard | /* No result back */
|
1635 | baca51fa | bellard | fdctrl_reset_fifo(fdctrl); |
1636 | 8977f3c1 | bellard | break;
|
1637 | 8977f3c1 | bellard | case 0x04: |
1638 | 8977f3c1 | bellard | /* SENSE_DRIVE_STATUS */
|
1639 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat SENSE_DRIVE_STATUS command\n");
|
1640 | baca51fa | bellard | fdctrl->cur_drv = fdctrl->fifo[1] & 1; |
1641 | baca51fa | bellard | cur_drv = get_cur_drv(fdctrl); |
1642 | baca51fa | bellard | cur_drv->head = (fdctrl->fifo[1] >> 2) & 1; |
1643 | 8977f3c1 | bellard | /* 1 Byte status back */
|
1644 | baca51fa | bellard | fdctrl->fifo[0] = (cur_drv->ro << 6) | |
1645 | 8977f3c1 | bellard | (cur_drv->track == 0 ? 0x10 : 0x00) | |
1646 | baca51fa | bellard | fdctrl->cur_drv; |
1647 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 1, 0); |
1648 | 8977f3c1 | bellard | break;
|
1649 | 8977f3c1 | bellard | case 0x07: |
1650 | 8977f3c1 | bellard | /* RECALIBRATE */
|
1651 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat RECALIBRATE command\n");
|
1652 | baca51fa | bellard | fdctrl->cur_drv = fdctrl->fifo[1] & 1; |
1653 | baca51fa | bellard | cur_drv = get_cur_drv(fdctrl); |
1654 | 8977f3c1 | bellard | fd_recalibrate(cur_drv); |
1655 | baca51fa | bellard | fdctrl_reset_fifo(fdctrl); |
1656 | 8977f3c1 | bellard | /* Raise Interrupt */
|
1657 | baca51fa | bellard | fdctrl_raise_irq(fdctrl, 0x20);
|
1658 | 8977f3c1 | bellard | break;
|
1659 | 8977f3c1 | bellard | case 0x0F: |
1660 | 8977f3c1 | bellard | /* SEEK */
|
1661 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat SEEK command\n");
|
1662 | baca51fa | bellard | fdctrl->cur_drv = fdctrl->fifo[1] & 1; |
1663 | baca51fa | bellard | cur_drv = get_cur_drv(fdctrl); |
1664 | baca51fa | bellard | fd_start(cur_drv); |
1665 | baca51fa | bellard | if (fdctrl->fifo[2] <= cur_drv->track) |
1666 | 8977f3c1 | bellard | cur_drv->dir = 1;
|
1667 | 8977f3c1 | bellard | else
|
1668 | 8977f3c1 | bellard | cur_drv->dir = 0;
|
1669 | baca51fa | bellard | fdctrl_reset_fifo(fdctrl); |
1670 | baca51fa | bellard | if (fdctrl->fifo[2] > cur_drv->max_track) { |
1671 | baca51fa | bellard | fdctrl_raise_irq(fdctrl, 0x60);
|
1672 | 8977f3c1 | bellard | } else {
|
1673 | baca51fa | bellard | cur_drv->track = fdctrl->fifo[2];
|
1674 | 8977f3c1 | bellard | /* Raise Interrupt */
|
1675 | baca51fa | bellard | fdctrl_raise_irq(fdctrl, 0x20);
|
1676 | 8977f3c1 | bellard | } |
1677 | 8977f3c1 | bellard | break;
|
1678 | 8977f3c1 | bellard | case 0x12: |
1679 | 8977f3c1 | bellard | /* PERPENDICULAR_MODE */
|
1680 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat PERPENDICULAR_MODE command\n");
|
1681 | baca51fa | bellard | if (fdctrl->fifo[1] & 0x80) |
1682 | baca51fa | bellard | cur_drv->perpendicular = fdctrl->fifo[1] & 0x7; |
1683 | 8977f3c1 | bellard | /* No result back */
|
1684 | baca51fa | bellard | fdctrl_reset_fifo(fdctrl); |
1685 | 8977f3c1 | bellard | break;
|
1686 | 8977f3c1 | bellard | case 0x13: |
1687 | 8977f3c1 | bellard | /* CONFIGURE */
|
1688 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat CONFIGURE command\n");
|
1689 | baca51fa | bellard | fdctrl->config = fdctrl->fifo[2];
|
1690 | baca51fa | bellard | fdctrl->precomp_trk = fdctrl->fifo[3];
|
1691 | 8977f3c1 | bellard | /* No result back */
|
1692 | baca51fa | bellard | fdctrl_reset_fifo(fdctrl); |
1693 | 8977f3c1 | bellard | break;
|
1694 | 8977f3c1 | bellard | case 0x17: |
1695 | 8977f3c1 | bellard | /* POWERDOWN_MODE */
|
1696 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat POWERDOWN_MODE command\n");
|
1697 | baca51fa | bellard | fdctrl->pwrd = fdctrl->fifo[1];
|
1698 | baca51fa | bellard | fdctrl->fifo[0] = fdctrl->fifo[1]; |
1699 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 1, 1); |
1700 | 8977f3c1 | bellard | break;
|
1701 | 8977f3c1 | bellard | case 0x33: |
1702 | 8977f3c1 | bellard | /* OPTION */
|
1703 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat OPTION command\n");
|
1704 | 8977f3c1 | bellard | /* No result back */
|
1705 | baca51fa | bellard | fdctrl_reset_fifo(fdctrl); |
1706 | 8977f3c1 | bellard | break;
|
1707 | 8977f3c1 | bellard | case 0x42: |
1708 | 8977f3c1 | bellard | /* READ_TRACK */
|
1709 | 8977f3c1 | bellard | // FLOPPY_DPRINTF("treat READ_TRACK command\n");
|
1710 | 8977f3c1 | bellard | FLOPPY_ERROR("treat READ_TRACK command\n");
|
1711 | baca51fa | bellard | fdctrl_start_transfer(fdctrl, FD_DIR_READ); |
1712 | 8977f3c1 | bellard | break;
|
1713 | 8977f3c1 | bellard | case 0x4A: |
1714 | 8977f3c1 | bellard | /* READ_ID */
|
1715 | baca51fa | bellard | FLOPPY_DPRINTF("treat READ_ID command\n");
|
1716 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); |
1717 | 8977f3c1 | bellard | break;
|
1718 | 8977f3c1 | bellard | case 0x4C: |
1719 | 8977f3c1 | bellard | /* RESTORE */
|
1720 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat RESTORE command\n");
|
1721 | 8977f3c1 | bellard | /* Drives position */
|
1722 | baca51fa | bellard | drv0(fdctrl)->track = fdctrl->fifo[3];
|
1723 | baca51fa | bellard | drv1(fdctrl)->track = fdctrl->fifo[4];
|
1724 | 8977f3c1 | bellard | /* timers */
|
1725 | baca51fa | bellard | fdctrl->timer0 = fdctrl->fifo[7];
|
1726 | baca51fa | bellard | fdctrl->timer1 = fdctrl->fifo[8];
|
1727 | baca51fa | bellard | cur_drv->last_sect = fdctrl->fifo[9];
|
1728 | baca51fa | bellard | fdctrl->lock = fdctrl->fifo[10] >> 7; |
1729 | baca51fa | bellard | cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF; |
1730 | baca51fa | bellard | fdctrl->config = fdctrl->fifo[11];
|
1731 | baca51fa | bellard | fdctrl->precomp_trk = fdctrl->fifo[12];
|
1732 | baca51fa | bellard | fdctrl->pwrd = fdctrl->fifo[13];
|
1733 | baca51fa | bellard | fdctrl_reset_fifo(fdctrl); |
1734 | 8977f3c1 | bellard | break;
|
1735 | 8977f3c1 | bellard | case 0x4D: |
1736 | 8977f3c1 | bellard | /* FORMAT_TRACK */
|
1737 | baca51fa | bellard | FLOPPY_DPRINTF("treat FORMAT_TRACK command\n");
|
1738 | baca51fa | bellard | fdctrl->cur_drv = fdctrl->fifo[1] & 1; |
1739 | baca51fa | bellard | cur_drv = get_cur_drv(fdctrl); |
1740 | baca51fa | bellard | fdctrl->data_state |= FD_STATE_FORMAT; |
1741 | baca51fa | bellard | if (fdctrl->fifo[0] & 0x80) |
1742 | baca51fa | bellard | fdctrl->data_state |= FD_STATE_MULTI; |
1743 | baca51fa | bellard | else
|
1744 | baca51fa | bellard | fdctrl->data_state &= ~FD_STATE_MULTI; |
1745 | baca51fa | bellard | fdctrl->data_state &= ~FD_STATE_SEEK; |
1746 | baca51fa | bellard | cur_drv->bps = |
1747 | baca51fa | bellard | fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2]; |
1748 | baca51fa | bellard | #if 0
|
1749 | baca51fa | bellard | cur_drv->last_sect =
|
1750 | baca51fa | bellard | cur_drv->flags & FDISK_DBL_SIDES ? fdctrl->fifo[3] :
|
1751 | baca51fa | bellard | fdctrl->fifo[3] / 2;
|
1752 | baca51fa | bellard | #else
|
1753 | baca51fa | bellard | cur_drv->last_sect = fdctrl->fifo[3];
|
1754 | baca51fa | bellard | #endif
|
1755 | baca51fa | bellard | /* Bochs BIOS is buggy and don't send format informations
|
1756 | baca51fa | bellard | * for each sector. So, pretend all's done right now...
|
1757 | baca51fa | bellard | */
|
1758 | baca51fa | bellard | fdctrl->data_state &= ~FD_STATE_FORMAT; |
1759 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); |
1760 | 8977f3c1 | bellard | break;
|
1761 | 8977f3c1 | bellard | case 0x8E: |
1762 | 8977f3c1 | bellard | /* DRIVE_SPECIFICATION_COMMAND */
|
1763 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat DRIVE_SPECIFICATION_COMMAND command\n");
|
1764 | baca51fa | bellard | if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80) { |
1765 | 8977f3c1 | bellard | /* Command parameters done */
|
1766 | baca51fa | bellard | if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) { |
1767 | baca51fa | bellard | fdctrl->fifo[0] = fdctrl->fifo[1]; |
1768 | baca51fa | bellard | fdctrl->fifo[2] = 0; |
1769 | baca51fa | bellard | fdctrl->fifo[3] = 0; |
1770 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 4, 1); |
1771 | 8977f3c1 | bellard | } else {
|
1772 | baca51fa | bellard | fdctrl_reset_fifo(fdctrl); |
1773 | 8977f3c1 | bellard | } |
1774 | baca51fa | bellard | } else if (fdctrl->data_len > 7) { |
1775 | 8977f3c1 | bellard | /* ERROR */
|
1776 | baca51fa | bellard | fdctrl->fifo[0] = 0x80 | |
1777 | baca51fa | bellard | (cur_drv->head << 2) | fdctrl->cur_drv;
|
1778 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 1, 1); |
1779 | 8977f3c1 | bellard | } |
1780 | 8977f3c1 | bellard | break;
|
1781 | 8977f3c1 | bellard | case 0x8F: |
1782 | 8977f3c1 | bellard | /* RELATIVE_SEEK_OUT */
|
1783 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat RELATIVE_SEEK_OUT command\n");
|
1784 | baca51fa | bellard | fdctrl->cur_drv = fdctrl->fifo[1] & 1; |
1785 | baca51fa | bellard | cur_drv = get_cur_drv(fdctrl); |
1786 | baca51fa | bellard | fd_start(cur_drv); |
1787 | 8977f3c1 | bellard | cur_drv->dir = 0;
|
1788 | baca51fa | bellard | if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) { |
1789 | baca51fa | bellard | cur_drv->track = cur_drv->max_track - 1;
|
1790 | baca51fa | bellard | } else {
|
1791 | baca51fa | bellard | cur_drv->track += fdctrl->fifo[2];
|
1792 | 8977f3c1 | bellard | } |
1793 | baca51fa | bellard | fdctrl_reset_fifo(fdctrl); |
1794 | baca51fa | bellard | fdctrl_raise_irq(fdctrl, 0x20);
|
1795 | 8977f3c1 | bellard | break;
|
1796 | 8977f3c1 | bellard | case 0xCD: |
1797 | 8977f3c1 | bellard | /* FORMAT_AND_WRITE */
|
1798 | 8977f3c1 | bellard | // FLOPPY_DPRINTF("treat FORMAT_AND_WRITE command\n");
|
1799 | 8977f3c1 | bellard | FLOPPY_ERROR("treat FORMAT_AND_WRITE command\n");
|
1800 | baca51fa | bellard | fdctrl_unimplemented(fdctrl); |
1801 | 8977f3c1 | bellard | break;
|
1802 | 8977f3c1 | bellard | case 0xCF: |
1803 | 8977f3c1 | bellard | /* RELATIVE_SEEK_IN */
|
1804 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat RELATIVE_SEEK_IN command\n");
|
1805 | baca51fa | bellard | fdctrl->cur_drv = fdctrl->fifo[1] & 1; |
1806 | baca51fa | bellard | cur_drv = get_cur_drv(fdctrl); |
1807 | baca51fa | bellard | fd_start(cur_drv); |
1808 | 8977f3c1 | bellard | cur_drv->dir = 1;
|
1809 | baca51fa | bellard | if (fdctrl->fifo[2] > cur_drv->track) { |
1810 | baca51fa | bellard | cur_drv->track = 0;
|
1811 | baca51fa | bellard | } else {
|
1812 | baca51fa | bellard | cur_drv->track -= fdctrl->fifo[2];
|
1813 | 8977f3c1 | bellard | } |
1814 | baca51fa | bellard | fdctrl_reset_fifo(fdctrl); |
1815 | baca51fa | bellard | /* Raise Interrupt */
|
1816 | baca51fa | bellard | fdctrl_raise_irq(fdctrl, 0x20);
|
1817 | 8977f3c1 | bellard | break;
|
1818 | 8977f3c1 | bellard | } |
1819 | 8977f3c1 | bellard | } |
1820 | 8977f3c1 | bellard | } |