Archipelago » qemu

        BADF("Unsupported command length, command %x\n", s->command);

        /* Identify device as SCSI-3 rev 1.

           Some later commands are also implemented. */

	s->buf[2] = 3;

        {

            char *p;

            int page;

            page = buf[2] & 0x3f;

            DPRINTF("Mode Sense (page %d, len %d)\n", page, len);

            p = s->buf;

            memset(p, 0, 4);

            if (bdrv_get_type_hint(s->bdrv) == BDRV_TYPE_CDROM) {

                s->buf[2] = 0x80; /* Readonly.  */

            }

            p += 4;

            if ((page == 8 || page == 0x3f)) {

                /* Caching page.  */

                p[0] = 8;

                p[1] = 0x12;

                p[2] = 4; /* WCE */

                p += 19;

            }

            if ((page == 0x3f || page == 0x2a)

                    && (bdrv_get_type_hint(s->bdrv) == BDRV_TYPE_CDROM)) {

                /* CD Capabilities and Mechanical Status page. */

                p[0] = 0x2a;

                p[1] = 0x14;

                p[2] = 3; // CD-R & CD-RW read

                p[3] = 0; // Writing not supported

                p[4] = 0x7f; /* Audio, composite, digital out,

                                         mode 2 form 1&2, multi session */

                p[5] = 0xff; /* CD DA, DA accurate, RW supported,

                                         RW corrected, C2 errors, ISRC,

                                         UPC, Bar code */

                p[6] = 0x2d | (bdrv_is_locked(s->bdrv)? 2 : 0);

                /* Locking supported, jumper present, eject, tray */

                p[7] = 0; /* no volume & mute control, no

                                      changer */

                p[8] = (50 * 176) >> 8; // 50x read speed

                p[9] = (50 * 176) & 0xff;

                p[10] = 0 >> 8; // No volume

                p[11] = 0 & 0xff;

                p[12] = 2048 >> 8; // 2M buffer

                p[13] = 2048 & 0xff;

                p[14] = (16 * 176) >> 8; // 16x read speed current

                p[15] = (16 * 176) & 0xff;

                p[18] = (16 * 176) >> 8; // 16x write speed

                p[19] = (16 * 176) & 0xff;

                p[20] = (16 * 176) >> 8; // 16x write speed current

                p[21] = (16 * 176) & 0xff;

                p += 21;

            }

            s->buf_len = p - s->buf;

            s->buf[0] = s->buf_len - 4;

            if (s->buf_len > len)

                s->buf_len = len;

        break;

    case 0x1b:

        DPRINTF("Start Stop Unit\n");

	break;

    case 0x1e:

        DPRINTF("Prevent Allow Medium Removal (prevent = %d)\n", buf[4] & 3);

        bdrv_set_locked(s->bdrv, buf[4] & 1);

    case 0x46:

        DPRINTF("Get Configuration (rt %d, maxlen %d)\n", buf[1] & 3, len);

        memset(s->buf, 0, 8);

        /* ??? This shoud probably return much more information.  For now

           just return the basic header indicating the CD-ROM profile.  */

        s->buf[7] = 8; // CD-ROM

        s->buf_len = 8;

        break;