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/*
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* QEMU Soundblaster 16 emulation
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*
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* Copyright (c) 2003 Vassili Karpov (malc)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "vl.h" |
25 |
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#define MIN(a, b) ((a)>(b)?(b):(a))
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#define LENOFA(a) ((int) (sizeof(a)/sizeof(a[0]))) |
28 |
|
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#define log(...) do { \ |
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fprintf (stderr, "sb16: " __VA_ARGS__); \
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fputc ('\n', stderr); \
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} while (0) |
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|
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/* #define DEBUG_SB16 */
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#ifdef DEBUG_SB16
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#define lwarn(...) fprintf (stderr, "sb16: " __VA_ARGS__) |
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#define linfo(...) fprintf (stderr, "sb16: " __VA_ARGS__) |
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#define ldebug(...) fprintf (stderr, "sb16: " __VA_ARGS__) |
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#else
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#define lwarn(...)
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#define linfo(...)
|
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#define ldebug(...)
|
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#endif
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|
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#define IO_READ_PROTO(name) \
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uint32_t name (void *opaque, uint32_t nport)
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#define IO_WRITE_PROTO(name) \
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void name (void *opaque, uint32_t nport, uint32_t val) |
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|
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static const char e3[] = "COPYRIGHT (C) CREATIVE TECHNOLOGY LTD, 1992."; |
51 |
|
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static struct { |
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int ver_lo;
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int ver_hi;
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int irq;
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int dma;
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int hdma;
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int port;
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int mix_block;
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} sb = {5, 4, 5, 1, 5, 0x220, -1}; |
61 |
|
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static int mix_block, noirq; |
63 |
|
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typedef struct SB16State { |
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int in_index;
|
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int out_data_len;
|
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int fmt_stereo;
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int fmt_signed;
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int fmt_bits;
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int dma_auto;
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int dma_buffer_size;
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int fifo;
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int freq;
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int time_const;
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int speaker;
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int needed_bytes;
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int cmd;
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int dma_pos;
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int use_hdma;
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80 |
|
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int v2x6;
|
82 |
|
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uint8_t in_data[10];
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uint8_t out_data[50];
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|
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int left_till_irq;
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|
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/* mixer state */
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int mixer_nreg;
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uint8_t mixer_regs[256];
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} SB16State; |
92 |
|
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/* XXX: suppress that and use a context */
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static struct SB16State dsp; |
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static void log_dsp (SB16State *dsp) |
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{ |
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linfo ("%c:%c:%d:%c:dmabuf=%d:pos=%d:freq=%d:timeconst=%d:speaker=%d\n",
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dsp->fmt_stereo ? 'S' : 'M', |
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dsp->fmt_signed ? 'S' : 'U', |
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dsp->fmt_bits, |
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dsp->dma_auto ? 'a' : 's', |
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dsp->dma_buffer_size, |
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dsp->dma_pos, |
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dsp->freq, |
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dsp->time_const, |
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dsp->speaker); |
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} |
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|
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static void control (int hold) |
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{ |
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linfo ("%d high %d\n", hold, dsp.use_hdma);
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if (hold) {
|
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if (dsp.use_hdma)
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DMA_hold_DREQ (sb.hdma); |
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else
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DMA_hold_DREQ (sb.dma); |
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} |
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else {
|
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if (dsp.use_hdma)
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DMA_release_DREQ (sb.hdma); |
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else
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DMA_release_DREQ (sb.dma); |
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} |
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} |
126 |
|
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static void dma_cmd (uint8_t cmd, uint8_t d0, int dma_len) |
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{ |
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int bps;
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audfmt_e fmt; |
131 |
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dsp.use_hdma = cmd < 0xc0;
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dsp.fifo = (cmd >> 1) & 1; |
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dsp.dma_auto = (cmd >> 2) & 1; |
135 |
|
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switch (cmd >> 4) { |
137 |
case 11: |
138 |
dsp.fmt_bits = 16;
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break;
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140 |
|
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case 12: |
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dsp.fmt_bits = 8;
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break;
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} |
145 |
|
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dsp.fmt_signed = (d0 >> 4) & 1; |
147 |
dsp.fmt_stereo = (d0 >> 5) & 1; |
148 |
|
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if (-1 != dsp.time_const) { |
150 |
int tmp;
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151 |
|
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tmp = 256 - dsp.time_const;
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dsp.freq = (1000000 + (tmp / 2)) / tmp; |
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} |
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bps = 1 << (16 == dsp.fmt_bits); |
156 |
|
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if (-1 != dma_len) |
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dsp.dma_buffer_size = (dma_len + 1) * bps;
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|
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linfo ("frequency %d, stereo %d, signed %d, bits %d, size %d, auto %d\n",
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dsp.freq, dsp.fmt_stereo, dsp.fmt_signed, dsp.fmt_bits, |
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dsp.dma_buffer_size, dsp.dma_auto); |
163 |
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if (16 == dsp.fmt_bits) { |
165 |
if (dsp.fmt_signed) {
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fmt = AUD_FMT_S16; |
167 |
} |
168 |
else {
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fmt = AUD_FMT_U16; |
170 |
} |
171 |
} |
172 |
else {
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if (dsp.fmt_signed) {
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fmt = AUD_FMT_S8; |
175 |
} |
176 |
else {
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fmt = AUD_FMT_U8; |
178 |
} |
179 |
} |
180 |
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dsp.dma_pos = 0;
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dsp.left_till_irq = dsp.dma_buffer_size; |
183 |
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if (sb.mix_block) {
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mix_block = sb.mix_block; |
186 |
} |
187 |
else {
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int align;
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align = bps << dsp.fmt_stereo; |
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mix_block = ((dsp.freq * align) / 100) & ~(align - 1); |
192 |
} |
193 |
|
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AUD_reset (dsp.freq, 1 << dsp.fmt_stereo, fmt);
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control (1);
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dsp.speaker = 1;
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} |
198 |
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static inline void dsp_out_data(SB16State *dsp, int val) |
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{ |
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if (dsp->out_data_len < sizeof(dsp->out_data)) |
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dsp->out_data[dsp->out_data_len++] = val; |
203 |
} |
204 |
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static void command (SB16State *dsp, uint8_t cmd) |
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{ |
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linfo ("%#x\n", cmd);
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if (cmd > 0xaf && cmd < 0xd0) { |
210 |
if (cmd & 8) |
211 |
goto error;
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switch (cmd >> 4) { |
214 |
case 11: |
215 |
case 12: |
216 |
break;
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default:
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log("%#x wrong bits", cmd);
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goto error;
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} |
221 |
dsp->needed_bytes = 3;
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} |
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else {
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switch (cmd) {
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case 0x00: |
226 |
case 0x03: |
227 |
case 0xe7: |
228 |
/* IMS uses those when probing for sound devices */
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return;
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|
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case 0x04: |
232 |
dsp->needed_bytes = 1;
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break;
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|
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case 0x05: |
236 |
case 0x0e: |
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dsp->needed_bytes = 2;
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break;
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case 0x0f: |
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dsp->needed_bytes = 1;
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dsp_out_data (dsp, 0);
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break;
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244 |
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case 0x10: |
246 |
dsp->needed_bytes = 1;
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break;
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248 |
|
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case 0x14: |
250 |
dsp->needed_bytes = 2;
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dsp->dma_buffer_size = 0;
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break;
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253 |
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case 0x20: |
255 |
dsp_out_data(dsp, 0xff);
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break;
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257 |
|
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case 0x35: |
259 |
lwarn ("MIDI commands not implemented\n");
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break;
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261 |
|
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case 0x40: |
263 |
dsp->freq = -1;
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dsp->time_const = -1;
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dsp->needed_bytes = 1;
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break;
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267 |
|
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case 0x41: |
269 |
case 0x42: |
270 |
dsp->freq = -1;
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dsp->time_const = -1;
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dsp->needed_bytes = 2;
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break;
|
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|
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case 0x47: /* Continue Auto-Initialize DMA 16bit */ |
276 |
break;
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277 |
|
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case 0x48: |
279 |
dsp->needed_bytes = 2;
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break;
|
281 |
|
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case 0x27: /* ????????? */ |
283 |
case 0x4e: |
284 |
return;
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285 |
|
286 |
case 0x80: |
287 |
cmd = -1;
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break;
|
289 |
|
290 |
case 0x90: |
291 |
case 0x91: |
292 |
{ |
293 |
uint8_t d0; |
294 |
|
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d0 = 4;
|
296 |
/* if (dsp->fmt_signed) d0 |= 16; */
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/* if (dsp->fmt_stereo) d0 |= 32; */
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dma_cmd (cmd == 0x90 ? 0xc4 : 0xc0, d0, -1); |
299 |
cmd = -1;
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break;
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301 |
} |
302 |
|
303 |
case 0xd0: /* XXX */ |
304 |
control (0);
|
305 |
return;
|
306 |
|
307 |
case 0xd1: |
308 |
dsp->speaker = 1;
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309 |
break;
|
310 |
|
311 |
case 0xd3: |
312 |
dsp->speaker = 0;
|
313 |
return;
|
314 |
|
315 |
case 0xd4: |
316 |
control (1);
|
317 |
break;
|
318 |
|
319 |
case 0xd5: |
320 |
control (0);
|
321 |
break;
|
322 |
|
323 |
case 0xd6: |
324 |
control (1);
|
325 |
break;
|
326 |
|
327 |
case 0xd9: |
328 |
control (0);
|
329 |
dsp->dma_auto = 0;
|
330 |
return;
|
331 |
|
332 |
case 0xda: |
333 |
control (0);
|
334 |
dsp->dma_auto = 0;
|
335 |
break;
|
336 |
|
337 |
case 0xe0: |
338 |
dsp->needed_bytes = 1;
|
339 |
break;
|
340 |
|
341 |
case 0xe1: |
342 |
dsp_out_data(dsp, sb.ver_lo); |
343 |
dsp_out_data(dsp, sb.ver_hi); |
344 |
return;
|
345 |
|
346 |
case 0xe3: |
347 |
{ |
348 |
int i;
|
349 |
for (i = sizeof (e3) - 1; i >= 0; --i) |
350 |
dsp_out_data (dsp, e3[i]); |
351 |
return;
|
352 |
} |
353 |
|
354 |
case 0xf2: |
355 |
dsp_out_data(dsp, 0xaa);
|
356 |
dsp->mixer_regs[0x82] |= dsp->mixer_regs[0x80]; |
357 |
pic_set_irq (sb.irq, 1);
|
358 |
return;
|
359 |
|
360 |
default:
|
361 |
log("%#x is unknown", cmd);
|
362 |
goto error;
|
363 |
} |
364 |
} |
365 |
dsp->cmd = cmd; |
366 |
return;
|
367 |
|
368 |
error:
|
369 |
return;
|
370 |
} |
371 |
|
372 |
static void complete (SB16State *dsp) |
373 |
{ |
374 |
linfo ("complete command %#x, in_index %d, needed_bytes %d\n",
|
375 |
dsp->cmd, dsp->in_index, dsp->needed_bytes); |
376 |
|
377 |
if (dsp->cmd > 0xaf && dsp->cmd < 0xd0) { |
378 |
int d0, d1, d2;
|
379 |
|
380 |
d0 = dsp->in_data[0];
|
381 |
d1 = dsp->in_data[1];
|
382 |
d2 = dsp->in_data[2];
|
383 |
|
384 |
ldebug ("d0 = %d, d1 = %d, d2 = %d\n",
|
385 |
d0, d1, d2); |
386 |
dma_cmd (dsp->cmd, d0, d1 + (d2 << 8));
|
387 |
} |
388 |
else {
|
389 |
switch (dsp->cmd) {
|
390 |
case 0x05: |
391 |
case 0x04: |
392 |
case 0x0e: |
393 |
case 0x0f: |
394 |
break;
|
395 |
|
396 |
case 0x10: |
397 |
break;
|
398 |
|
399 |
case 0x14: |
400 |
{ |
401 |
int d0, d1;
|
402 |
int save_left;
|
403 |
int save_pos;
|
404 |
|
405 |
d0 = dsp->in_data[0];
|
406 |
d1 = dsp->in_data[1];
|
407 |
|
408 |
save_left = dsp->left_till_irq; |
409 |
save_pos = dsp->dma_pos; |
410 |
dma_cmd (0xc0, 0, d0 + (d1 << 8)); |
411 |
dsp->left_till_irq = save_left; |
412 |
dsp->dma_pos = save_pos; |
413 |
|
414 |
linfo ("set buffer size data[%d, %d] %d pos %d\n",
|
415 |
d0, d1, dsp->dma_buffer_size, dsp->dma_pos); |
416 |
break;
|
417 |
} |
418 |
|
419 |
case 0x40: |
420 |
dsp->time_const = dsp->in_data[0];
|
421 |
linfo ("set time const %d\n", dsp->time_const);
|
422 |
break;
|
423 |
|
424 |
case 0x41: |
425 |
case 0x42: |
426 |
dsp->freq = dsp->in_data[1] + (dsp->in_data[0] << 8); |
427 |
linfo ("set freq %#x, %#x = %d\n",
|
428 |
dsp->in_data[1], dsp->in_data[0], dsp->freq); |
429 |
break;
|
430 |
|
431 |
case 0x48: |
432 |
dsp->dma_buffer_size = dsp->in_data[1] + (dsp->in_data[0] << 8); |
433 |
linfo ("set dma len %#x, %#x = %d\n",
|
434 |
dsp->in_data[1], dsp->in_data[0], dsp->dma_buffer_size); |
435 |
break;
|
436 |
|
437 |
case 0xe0: |
438 |
dsp->out_data_len = 0;
|
439 |
linfo ("data = %#x\n", dsp->in_data[0]); |
440 |
dsp_out_data(dsp, dsp->in_data[0] ^ 0xff); |
441 |
break;
|
442 |
|
443 |
default:
|
444 |
log ("unrecognized command %#x", dsp->cmd);
|
445 |
return;
|
446 |
} |
447 |
} |
448 |
|
449 |
dsp->cmd = -1;
|
450 |
return;
|
451 |
} |
452 |
|
453 |
static IO_WRITE_PROTO (dsp_write)
|
454 |
{ |
455 |
SB16State *dsp = opaque; |
456 |
int iport;
|
457 |
|
458 |
iport = nport - sb.port; |
459 |
|
460 |
ldebug ("write %#x %#x\n", nport, iport);
|
461 |
switch (iport) {
|
462 |
case 0x6: |
463 |
control (0);
|
464 |
if (0 == val) |
465 |
dsp->v2x6 = 0;
|
466 |
else if ((1 == val) && (0 == dsp->v2x6)) { |
467 |
dsp->v2x6 = 1;
|
468 |
dsp_out_data(dsp, 0xaa);
|
469 |
} |
470 |
else
|
471 |
dsp->v2x6 = ~0;
|
472 |
break;
|
473 |
|
474 |
case 0xc: /* write data or command | write status */ |
475 |
if (0 == dsp->needed_bytes) { |
476 |
command (dsp, val); |
477 |
if (0 == dsp->needed_bytes) { |
478 |
log_dsp (dsp); |
479 |
} |
480 |
} |
481 |
else {
|
482 |
dsp->in_data[dsp->in_index++] = val; |
483 |
if (dsp->in_index == dsp->needed_bytes) {
|
484 |
dsp->needed_bytes = 0;
|
485 |
dsp->in_index = 0;
|
486 |
complete (dsp); |
487 |
log_dsp (dsp); |
488 |
} |
489 |
} |
490 |
break;
|
491 |
|
492 |
default:
|
493 |
log ("(nport=%#x, val=%#x)", nport, val);
|
494 |
break;
|
495 |
} |
496 |
} |
497 |
|
498 |
static IO_READ_PROTO (dsp_read)
|
499 |
{ |
500 |
SB16State *dsp = opaque; |
501 |
int iport, retval;
|
502 |
|
503 |
iport = nport - sb.port; |
504 |
|
505 |
switch (iport) {
|
506 |
|
507 |
case 0x6: /* reset */ |
508 |
return 0; |
509 |
|
510 |
case 0xa: /* read data */ |
511 |
if (dsp->out_data_len) {
|
512 |
retval = dsp->out_data[--dsp->out_data_len]; |
513 |
} else {
|
514 |
log("empty output buffer");
|
515 |
goto error;
|
516 |
} |
517 |
break;
|
518 |
|
519 |
case 0xc: /* 0 can write */ |
520 |
retval = 0;
|
521 |
break;
|
522 |
|
523 |
case 0xd: /* timer interrupt clear */ |
524 |
log("timer interrupt clear");
|
525 |
goto error;
|
526 |
|
527 |
case 0xe: /* data available status | irq 8 ack */ |
528 |
/* XXX drop pic irq line here? */
|
529 |
ldebug ("8 ack\n");
|
530 |
retval = (0 == dsp->out_data_len) ? 0 : 0x80; |
531 |
dsp->mixer_regs[0x82] &= ~dsp->mixer_regs[0x80]; |
532 |
pic_set_irq (sb.irq, 0);
|
533 |
break;
|
534 |
|
535 |
case 0xf: /* irq 16 ack */ |
536 |
/* XXX drop pic irq line here? */
|
537 |
ldebug ("16 ack\n");
|
538 |
retval = 0xff;
|
539 |
dsp->mixer_regs[0x82] &= ~dsp->mixer_regs[0x80]; |
540 |
pic_set_irq (sb.irq, 0);
|
541 |
break;
|
542 |
|
543 |
default:
|
544 |
goto error;
|
545 |
} |
546 |
|
547 |
if ((0xc != iport) && (0xe != iport)) { |
548 |
ldebug ("nport=%#x iport %#x = %#x\n",
|
549 |
nport, iport, retval); |
550 |
} |
551 |
|
552 |
return retval;
|
553 |
|
554 |
error:
|
555 |
return 0; |
556 |
} |
557 |
|
558 |
static IO_WRITE_PROTO(mixer_write_indexb)
|
559 |
{ |
560 |
SB16State *dsp = opaque; |
561 |
dsp->mixer_nreg = val; |
562 |
} |
563 |
|
564 |
static IO_WRITE_PROTO(mixer_write_datab)
|
565 |
{ |
566 |
SB16State *dsp = opaque; |
567 |
|
568 |
if (dsp->mixer_nreg > 0x83) |
569 |
return;
|
570 |
dsp->mixer_regs[dsp->mixer_nreg] = val; |
571 |
} |
572 |
|
573 |
static IO_WRITE_PROTO(mixer_write_indexw)
|
574 |
{ |
575 |
mixer_write_indexb (opaque, nport, val & 0xff);
|
576 |
mixer_write_datab (opaque, nport, (val >> 8) & 0xff); |
577 |
} |
578 |
|
579 |
static IO_READ_PROTO(mixer_read)
|
580 |
{ |
581 |
SB16State *dsp = opaque; |
582 |
return dsp->mixer_regs[dsp->mixer_nreg];
|
583 |
} |
584 |
|
585 |
void SB16_run (void) |
586 |
{ |
587 |
if (0 == dsp.speaker) |
588 |
return;
|
589 |
|
590 |
AUD_run (); |
591 |
} |
592 |
|
593 |
static int write_audio (uint32_t addr, int len, int size) |
594 |
{ |
595 |
int temp, net;
|
596 |
uint8_t tmpbuf[4096];
|
597 |
|
598 |
temp = size; |
599 |
|
600 |
net = 0;
|
601 |
|
602 |
while (temp) {
|
603 |
int left_till_end;
|
604 |
int to_copy;
|
605 |
int copied;
|
606 |
|
607 |
left_till_end = len - dsp.dma_pos; |
608 |
|
609 |
to_copy = MIN (temp, left_till_end); |
610 |
if (to_copy > sizeof(tmpbuf)) |
611 |
to_copy = sizeof(tmpbuf);
|
612 |
cpu_physical_memory_read(addr + dsp.dma_pos, tmpbuf, to_copy); |
613 |
copied = AUD_write (tmpbuf, to_copy); |
614 |
|
615 |
temp -= copied; |
616 |
dsp.dma_pos += copied; |
617 |
|
618 |
if (dsp.dma_pos == len) {
|
619 |
dsp.dma_pos = 0;
|
620 |
} |
621 |
|
622 |
net += copied; |
623 |
|
624 |
if (copied != to_copy)
|
625 |
return net;
|
626 |
} |
627 |
|
628 |
return net;
|
629 |
} |
630 |
|
631 |
static int SB_read_DMA (void *opaque, target_ulong addr, int size) |
632 |
{ |
633 |
SB16State *dsp = opaque; |
634 |
int free, till, copy, written;
|
635 |
|
636 |
if (0 == dsp->speaker) |
637 |
return 0; |
638 |
|
639 |
if (dsp->left_till_irq < 0) { |
640 |
dsp->left_till_irq += dsp->dma_buffer_size; |
641 |
return dsp->dma_pos;
|
642 |
} |
643 |
|
644 |
free = AUD_get_free (); |
645 |
|
646 |
if ((free <= 0) || (0 == size)) { |
647 |
return dsp->dma_pos;
|
648 |
} |
649 |
|
650 |
if (mix_block > 0) { |
651 |
copy = MIN (free, mix_block); |
652 |
} |
653 |
else {
|
654 |
copy = free; |
655 |
} |
656 |
|
657 |
till = dsp->left_till_irq; |
658 |
|
659 |
ldebug ("addr:%#010x free:%d till:%d size:%d\n",
|
660 |
addr, free, till, size); |
661 |
if (till <= copy) {
|
662 |
if (0 == dsp->dma_auto) { |
663 |
copy = till; |
664 |
} |
665 |
} |
666 |
|
667 |
written = write_audio (addr, size, copy); |
668 |
dsp->left_till_irq -= written; |
669 |
AUD_adjust_estimate (free - written); |
670 |
|
671 |
if (dsp->left_till_irq <= 0) { |
672 |
dsp->mixer_regs[0x82] |= dsp->mixer_regs[0x80]; |
673 |
if (0 == noirq) { |
674 |
ldebug ("request irq\n");
|
675 |
pic_set_irq(sb.irq, 1);
|
676 |
} |
677 |
|
678 |
if (0 == dsp->dma_auto) { |
679 |
control (0);
|
680 |
} |
681 |
} |
682 |
|
683 |
ldebug ("pos %5d free %5d size %5d till % 5d copy %5d dma size %5d\n",
|
684 |
dsp->dma_pos, free, size, dsp->left_till_irq, copy, |
685 |
dsp->dma_buffer_size); |
686 |
|
687 |
if (dsp->left_till_irq <= 0) { |
688 |
dsp->left_till_irq += dsp->dma_buffer_size; |
689 |
} |
690 |
|
691 |
return dsp->dma_pos;
|
692 |
} |
693 |
|
694 |
static int magic_of_irq (int irq) |
695 |
{ |
696 |
switch (irq) {
|
697 |
case 2: |
698 |
return 1; |
699 |
case 5: |
700 |
return 2; |
701 |
case 7: |
702 |
return 4; |
703 |
case 10: |
704 |
return 8; |
705 |
default:
|
706 |
log ("bad irq %d", irq);
|
707 |
return 2; |
708 |
} |
709 |
} |
710 |
|
711 |
#if 0
|
712 |
static int irq_of_magic (int magic)
|
713 |
{
|
714 |
switch (magic) {
|
715 |
case 1:
|
716 |
return 2;
|
717 |
case 2:
|
718 |
return 5;
|
719 |
case 4:
|
720 |
return 7;
|
721 |
case 8:
|
722 |
return 10;
|
723 |
default:
|
724 |
log ("bad irq magic %d", magic);
|
725 |
return 2;
|
726 |
}
|
727 |
}
|
728 |
#endif
|
729 |
|
730 |
void SB16_init (void) |
731 |
{ |
732 |
SB16State *s = &dsp; |
733 |
int i;
|
734 |
static const uint8_t dsp_write_ports[] = {0x6, 0xc}; |
735 |
static const uint8_t dsp_read_ports[] = {0x6, 0xa, 0xc, 0xd, 0xe, 0xf}; |
736 |
|
737 |
memset(s->mixer_regs, 0xff, sizeof(s->mixer_regs)); |
738 |
|
739 |
s->mixer_regs[0x0e] = ~0; |
740 |
s->mixer_regs[0x80] = magic_of_irq (sb.irq);
|
741 |
s->mixer_regs[0x81] = 0x20 | (sb.dma << 1); |
742 |
|
743 |
for (i = 0x30; i < 0x48; i++) { |
744 |
s->mixer_regs[i] = 0x20;
|
745 |
} |
746 |
|
747 |
for (i = 0; i < LENOFA (dsp_write_ports); i++) { |
748 |
register_ioport_write (sb.port + dsp_write_ports[i], 1, 1, dsp_write, s); |
749 |
} |
750 |
|
751 |
for (i = 0; i < LENOFA (dsp_read_ports); i++) { |
752 |
register_ioport_read (sb.port + dsp_read_ports[i], 1, 1, dsp_read, s); |
753 |
} |
754 |
|
755 |
register_ioport_write (sb.port + 0x4, 1, 1, mixer_write_indexb, s); |
756 |
register_ioport_write (sb.port + 0x4, 1, 2, mixer_write_indexw, s); |
757 |
register_ioport_read (sb.port + 0x5, 1, 1, mixer_read, s); |
758 |
register_ioport_write (sb.port + 0x5, 1, 1, mixer_write_datab, s); |
759 |
|
760 |
DMA_register_channel (sb.hdma, SB_read_DMA, s); |
761 |
DMA_register_channel (sb.dma, SB_read_DMA, s); |
762 |
} |