bool mess_cdrom_driver::read_toc()
{
if (m_cd)
{
const cdrom_toc *toc = cdrom_get_toc(m_cd);
num_tracks = cdrom_get_last_track(m_cd);
switch (toc->tracks[0].trktype)
{
case CD_TRACK_MODE1: bin_sector_size=2048; break;
case CD_TRACK_MODE2_FORM1: bin_sector_size=2048; break;
case CD_TRACK_MODE2: bin_sector_size=2336; break;
case CD_TRACK_MODE2_FORM_MIX: bin_sector_size=2336; break;
default: bin_sector_size=2352; break;
}
set_native_sector_size(bin_sector_size);
num_sectors = cdrom_get_track_start(m_cd, num_tracks) + toc->tracks[num_tracks].frames;
// printf("mess_cdrom_driver: %d sectors, native size %d\n",num_sectors, bin_sector_size);
return true;
}
return false;
}
void matsucd_command_w( running_machine &machine, UINT8 data )
{
UINT8 cmd;
/* make sure we're enabled */
if ( cd.enabled == 0 )
return;
/* make sure /CMD is asserted */
if ( cd.cmd_signal == 0 )
return;
if ( cd.cdda_set == 0 )
{
// 2009-10, FP: for some reason, cdda_from_cdrom was not returning the correct
// CDDA device. Hence, as a temp workaround, I added the cdda to the struct
// and its tag is configured in matsucd_init
if ( cd.cdrom )
cdda_set_cdrom( cd.cdda, cd.cdrom);
cd.cdda_set = 1;
}
cd.input[cd.input_pos++] = data;
cmd = cd.input[0];
switch( cmd )
{
case 0x01: /* seek */
{
if ( cd.input_pos < 7 )
return;
/* stop CDDA audio if necessary */
matsucd_cdda_stop(machine);
cd.motor = 1;
memset( cd.output, 0, 6 );
matsucd_complete_cmd( machine, 0 );
}
break;
case 0x02: /* read sectors */
{
if ( cd.input_pos < 7 )
return;
/* stop CDDA audio if necessary */
matsucd_cdda_stop(machine);
/* LBA */
cd.lba = cd.input[1];
cd.lba <<= 8;
cd.lba |= cd.input[2];
cd.lba <<= 8;
cd.lba |= cd.input[3];
/* Number of blocks */
cd.num_blocks = cd.input[4];
cd.num_blocks <<= 8;
cd.num_blocks |= cd.input[5];
/* Reset transfer count */
cd.xfer_offset = 0;
/* go ahead and cache the first block */
if (!cdrom_read_data(cd.cdrom, cd.lba, cd.sector_buffer, matsucd_getsector_type()))
{
logerror( "MATSUCD - Warning: Read error on CD!\n" );
matsucd_command_error( machine );
return;
}
cd.motor = 1;
memset( cd.output, 0, 6 );
matsucd_complete_cmd( machine, 0 );
}
break;
case 0x04: /* motor on */
{
if ( cd.input_pos < 7 )
return;
cd.motor = 1;
memset( cd.output, 0, 6 );
matsucd_complete_cmd( machine, 0 );
}
break;
case 0x05: /* motor off */
{
if ( cd.input_pos < 7 )
return;
/* stop CDDA audio if necessary */
matsucd_cdda_stop(machine);
cd.motor = 0;
memset( cd.output, 0, 6 );
matsucd_complete_cmd( machine, 0 );
}
break;
case 0x09: /* play audio cd, LBA mode */
{
UINT32 lba, numblocks;
if ( cd.input_pos < 7 )
return;
lba = cd.input[1];
lba <<= 8;
lba |= cd.input[2];
lba <<= 8;
lba |= cd.input[3];
numblocks = cd.input[4];
numblocks <<= 8;
numblocks |= cd.input[5];
numblocks <<= 8;
numblocks |= cd.input[6];
matsucd_cdda_play( machine, lba, numblocks );
cd.motor = 1;
memset( cd.output, 0, 6 );
matsucd_complete_cmd( machine, 0 );
}
break;
case 0x0a: /* play audio cd, MSF mode */
{
UINT32 start, end, lba_start, lba_end;
if ( cd.input_pos < 7 )
return;
start = cd.input[1];
start <<= 8;
start |= cd.input[2];
start <<= 8;
start |= cd.input[3];
end = cd.input[4];
end <<= 8;
end |= cd.input[5];
end <<= 8;
end |= cd.input[6];
lba_start = MSF2LBA( start );
lba_end = MSF2LBA( end );
if ( end == 0xffffff )
{
lba_end = cdrom_get_track_start(cd.cdrom,cdrom_get_last_track(cd.cdrom)-1);
lba_end += cdrom_get_toc(cd.cdrom)->tracks[cdrom_get_last_track(cd.cdrom)-1].frames;
}
if ( lba_end <= lba_start )
{
matsucd_cdda_stop(machine);
}
else
{
matsucd_cdda_play( machine, lba_start, lba_end - lba_start );
cd.motor = 1;
}
memset( cd.output, 0, 6 );
matsucd_complete_cmd( machine, 0 );
}
break;
case 0x0b: /* play audio track and index */
{
UINT8 track_start = cd.input[1];
UINT8 index_start = cd.input[2];
UINT8 track_end = cd.input[3];
UINT8 index_end = cd.input[4];
UINT32 lba_start, lba_end;
/* TODO: Add index support once the CDDA engine supports it */
(void)index_start;
(void)index_end;
/* sanitize values */
if ( track_start == 0 ) track_start++;
if ( track_end == 0 ) track_end++;
if ( track_end > cdrom_get_last_track(cd.cdrom) )
track_end = cdrom_get_last_track(cd.cdrom);
/* find the start and stop positions */
lba_start = cdrom_get_track_start(cd.cdrom,track_start-1);
lba_end = cdrom_get_track_start(cd.cdrom,track_end-1);
lba_end += cdrom_get_toc(cd.cdrom)->tracks[track_end-1].frames;
if ( lba_end <= lba_start )
{
matsucd_cdda_stop(machine);
}
else
{
matsucd_cdda_play( machine, lba_start, lba_end - lba_start );
cd.motor = 1;
}
memset( cd.output, 0, 6 );
matsucd_complete_cmd( machine, 0 );
}
break;
case 0x81: /* status read */
{
UINT8 newstatus = cd.status;
newstatus &= MATSU_STATUS_SUCCESS | MATSU_STATUS_ERROR | MATSU_STATUS_PLAYING;
newstatus |= MATSU_STATUS_READY;
if (cd.cdrom)
{
newstatus |= MATSU_STATUS_MEDIA;
}
if (cd.motor)
newstatus |= MATSU_STATUS_MOTOR;
cd.output[0] = newstatus;
matsucd_set_status( machine, newstatus );
matsucd_complete_cmd( machine, 1 );
}
break;
case 0x82: /* error read */
{
if ( cd.input_pos < 7 )
return;
memset( cd.output, 0, 6 );
matsucd_complete_cmd( machine, 6 );
}
break;
case 0x84: /* set mode */
{
if ( cd.input_pos < 7 )
return;
cd.sector_size = cd.input[2];
cd.sector_size <<= 8;
cd.sector_size |= cd.input[3];
memset( cd.output, 0, 6 );
matsucd_complete_cmd( machine, 0 );
}
break;
case 0x87: /* read SUBQ */
{
int msfmode;
UINT32 lba;
UINT8 track;
if ( cd.input_pos < 7 )
return;
msfmode = (cd.input[1] & 0x02) ? 1 : 0;
memset( cd.output, 0, 13 );
cd.output[0] = matsucd_cdda_getstatus( machine, &lba );
if ( lba > 0 )
{
UINT32 disk_pos;
UINT32 track_pos;
track = cdrom_get_track(cd.cdrom, lba);
cd.output[1] = cdrom_get_adr_control(cd.cdrom, track);
cd.output[2] = track+1;
cd.output[3] = 0; /* index */
disk_pos = lba;
if ( msfmode ) disk_pos = LBA2MSF(disk_pos);
cd.output[4] = (disk_pos >> 24) & 0xff;
cd.output[5] = (disk_pos >> 16) & 0xff;
cd.output[6] = (disk_pos >> 8) & 0xff;
cd.output[7] = (disk_pos) & 0xff;
track_pos = lba - cdrom_get_track_start(cd.cdrom, track);
if ( msfmode ) track_pos = LBA2MSF(track_pos);
cd.output[8] = (track_pos >> 24) & 0xff;
cd.output[9] = (track_pos >> 16) & 0xff;
cd.output[10] = (track_pos >> 8) & 0xff;
cd.output[11] = (track_pos) & 0xff;
/* TODO: UPC flag at offset 12 */
cd.output[12] = 0;
}
matsucd_complete_cmd( machine, 13 );
}
break;
case 0x89: /* read disk info */
{
UINT32 end;
if ( cd.input_pos < 7 )
return;
memset( cd.output, 0, 5 );
cd.output[0] = cdrom_get_last_track(cd.cdrom) ? 1 : 0;
cd.output[1] = cdrom_get_last_track(cd.cdrom);
end = cdrom_get_track_start(cd.cdrom,cd.output[1]-1);
end += cdrom_get_toc(cd.cdrom)->tracks[cd.output[1]-1].frames;
end = LBA2MSF(end);
cd.output[2] = (end >> 16) & 0xff;
cd.output[3] = (end >> 8) & 0xff;
cd.output[4] = (end) & 0xff;
matsucd_complete_cmd( machine, 5 );
}
break;
case 0x8a: /* read toc */
{
UINT8 track;
int msfmode;
UINT32 track_start;
if ( cd.input_pos < 7 )
return;
/* stop CDDA audio if necessary */
matsucd_cdda_stop(machine);
track = cd.input[2];
msfmode = (cd.input[1] & 0x02) ? 1 : 0;
if ( cd.cdrom == NULL )
{
logerror( "MATSUCD - Warning: Reading TOC without a CD!\n" );
matsucd_command_error( machine );
return;
}
if ( track > cdrom_get_last_track(cd.cdrom) )
{
logerror( "MATSUCD - Warning: Reading invalid track entry from TOC!\n" );
matsucd_command_error( machine );
return;
}
memset( cd.output, 0, 7 );
track_start = cdrom_get_track_start(cd.cdrom, track > 0 ? (track-1) : track );
if ( msfmode ) track_start = LBA2MSF( track_start );
cd.output[1] = cdrom_get_adr_control(cd.cdrom, track > 0 ? (track-1) : track);
cd.output[2] = track;
cd.output[3] = (track == 0 ) ? cdrom_get_last_track(cd.cdrom) : 0;
cd.output[4] = (track_start >> 24) & 0xff;
cd.output[5] = (track_start >> 16) & 0xff;
cd.output[6] = (track_start >> 8) & 0xff;
cd.output[7] = (track_start) & 0xff;
cd.motor = 1;
matsucd_complete_cmd( machine, 8 );
}
break;
case 0x8b: /* pause audio */
{
if ( cd.input_pos < 7 )
return;
matsucd_cdda_pause( machine, (cd.input[1] == 0) ? 1 : 0 );
memset( cd.output, 0, 7 );
matsucd_complete_cmd( machine, 0 );
}
break;
case 0xa3: /* front panel */
{
if ( cd.input_pos < 7 )
return;
/* TODO: ??? */
memset( cd.output, 0, 7 );
matsucd_complete_cmd( machine, 0 );
}
break;
default:
logerror( "MATSUCD: Unknown/inimplemented command %08x\n", cmd );
break;
}