Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-23 00:39:36 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

nscsi_cd: Implement READ DISC INFORMATION command. [R. Belmont]

Browse Source
This commit is contained in:
arbee 2021-05-09 12:13:28 -04:00
parent 2ef80dd44a
commit 628fa01ed6
1 changed files with 35 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
src/devices/bus/nscsi/cd.cpp
View File

@ -457,6 +457,41 @@ void nscsi_cdrom_device::scsi_command()
break;
}
case SC_READ_DISC_INFORMATION:
LOG("command READ DISC INFORMATION\n");
std::fill_n(scsi_cmdbuf, 34, 0);
scsi_cmdbuf[1] = 32;
scsi_cmdbuf[2] = 2; // disc is complete
scsi_cmdbuf[3] = 1; // first track
scsi_cmdbuf[4] = 1; // number of sessions (TODO: session support for CHDv6)
scsi_cmdbuf[5] = 1; // first track in last session
scsi_cmdbuf[6] = cdrom_get_last_track(cdrom); // last track in last session
scsi_cmdbuf[8] = 0; // CD-ROM, not XA
// lead in start time in MSF
{
u32 tstart = cdrom_get_track_start(cdrom, 0);
tstart = to_msf(tstart + 150);
scsi_cmdbuf[16] = (tstart >> 24) & 0xff;
scsi_cmdbuf[17] = (tstart >> 16) & 0xff;
scsi_cmdbuf[18] = (tstart >> 8) & 0xff;
scsi_cmdbuf[19] = (tstart & 0xff);
// lead-out start time in MSF
tstart = cdrom_get_track_start(cdrom, 0xaa);
tstart = to_msf(tstart + 150);
scsi_cmdbuf[20] = (tstart >> 24) & 0xff;
scsi_cmdbuf[21] = (tstart >> 16) & 0xff;
scsi_cmdbuf[22] = (tstart >> 8) & 0xff;
scsi_cmdbuf[23] = (tstart & 0xff);
}
scsi_data_in(0, 34);
scsi_status_complete(SS_GOOD);
break;
case SC_PREVENT_ALLOW_MEDIUM_REMOVAL:
// TODO: support eject prevention
LOG("command %s MEDIUM REMOVAL\n", (scsi_cmdbuf[4] & 0x1) ? "PREVENT" : "ALLOW");