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The CD-ROM READ SUBCHANNEL command in header only mode now correctly returns the disc status and header type, fixes DOS CD players with OAKCDROM.SYS.

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OBattler
2019-12-21 20:04:18 +01:00
parent ccd1a8dde2
commit 6881b6ec64
1 changed files with 7 additions and 4 deletions
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11
src/scsi/scsi_cdrom.c
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@@ -9,7 +9,7 @@
* Implementation of the CD-ROM drive with SCSI(-like)
* commands, for both ATAPI and SCSI usage.
*
* Version: @(#)scsi_cdrom.c 1.0.72 2019/11/19
* Version: @(#)scsi_cdrom.c 1.0.73 2019/12/13
*
* Author: Miran Grca, <mgrca8@gmail.com>
*
@@ -2076,10 +2076,13 @@ scsi_cdrom_command(scsi_common_t *sc, uint8_t *cdb)
dev->buffer[pos++] = 0; dev->buffer[pos++] = 0; /*Subchannel length*/
/* Mode 0 = Q subchannel mode, first 16 bytes are indentical to mode 1 (current position),
the rest are stuff like ISRC etc., which can be all zeroes. */
if ((cdb[3] <= 3) && (alloc_length != 4)) {
if (cdb[3] <= 3) {
dev->buffer[pos++] = cdb[3]; /*Format code*/
dev->buffer[1] = cdrom_get_current_subchannel(dev->drv, &dev->buffer[4], msf);
dev->buffer[2] = alloc_length - 4;
if (alloc_length != 4) {
dev->buffer[1] = cdrom_get_current_subchannel(dev->drv, &dev->buffer[4], msf);
dev->buffer[2] = alloc_length - 4;
}
switch(dev->drv->cd_status) {
case CD_STATUS_PLAYING: