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mcd: change toc data

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This commit is contained in:
cracyc 2022-01-25 14:37:16 -06:00
parent 19b8551131
commit 3bf2c17c1d
1 changed files with 12 additions and 11 deletions
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23
src/devices/bus/isa/mcd.cpp
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@ -81,11 +81,11 @@ bool mcd_isa_device::read_sector(bool first)
uint32_t lba = msf_to_lba(m_readmsf);
if(m_drvmode == DRV_MODE_CDDA)
{
if(cdrom_get_track_type(m_cdrom_handle, cdrom_get_track(m_cdrom_handle, lba - 150)) == CD_TRACK_AUDIO)
if(cdrom_get_track_type(m_cdrom_handle, cdrom_get_track(m_cdrom_handle, lba)) == CD_TRACK_AUDIO)
{
m_cdda->stop_audio();
m_cdda->set_cdrom(m_cdrom_handle);
m_cdda->start_audio(lba - 150, m_readcount);
m_cdda->start_audio(lba, m_readcount);
return true;
}
else
@ -295,19 +295,20 @@ void mcd_isa_device::cmd_w(uint8_t data)
if(m_cdrom_handle)
{
int tracks = cdrom_get_last_track(m_cdrom_handle);
uint32_t start = lba_to_msf(cdrom_get_track_start(m_cdrom_handle, m_curtoctrk));
uint32_t end = lba_to_msf(cdrom_get_track_start(m_cdrom_handle, m_curtoctrk < (tracks - 1) ? m_curtoctrk + 1 : 0xaa));
uint32_t start = cdrom_get_track_start(m_cdrom_handle, m_curtoctrk);
uint32_t len = lba_to_msf(cdrom_get_track_start(m_cdrom_handle, m_curtoctrk < (tracks - 1) ? m_curtoctrk + 1 : 0xaa) - start);
start = lba_to_msf(start);
m_cmdbuf[1] = (cdrom_get_adr_control(m_cdrom_handle, m_curtoctrk) << 4) & 0xf0;
m_cmdbuf[2] = 0; // track num except when reading toc
m_cmdbuf[3] = dec_2_bcd(m_curtoctrk + 1); // index
m_cmdbuf[4] = (start >> 16) & 0xff;
m_cmdbuf[5] = (start >> 8) & 0xff;
m_cmdbuf[6] = start & 0xff;
m_cmdbuf[4] = (len >> 16) & 0xff;
m_cmdbuf[5] = (len >> 8) & 0xff;
m_cmdbuf[6] = len & 0xff;
m_cmdbuf[7] = 0;
m_cmdbuf[8] = (end >> 16) & 0xff;
m_cmdbuf[9] = (end >> 8) & 0xff;
m_cmdbuf[10] = end & 0xff;
if(m_curtoctrk > tracks)
m_cmdbuf[8] = (start >> 16) & 0xff;
m_cmdbuf[9] = (start >> 8) & 0xff;
m_cmdbuf[10] = start & 0xff;
if(m_curtoctrk >= tracks)
m_curtoctrk = 0;
else if(m_mode & MODE_GET_TOC)
m_curtoctrk++;