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Tandy/Memorex Video Information System MD-2500 [Carl]
This commit is contained in:
cracyc 2016-11-19 08:28:57 -06:00
parent f53a594cb5
commit eec74df904
1 changed files with 10 additions and 11 deletions
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21
src/mame/drivers/vis.cpp
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@ -71,9 +71,8 @@ void vis_audio_device::device_reset()
void vis_audio_device::dack16_w(int line, uint16_t data)
{
if(m_samples < ((m_dmalen & 2) ? 1 : 2))
m_sample[m_samples++] = data;
else
m_sample[m_samples++] = data;
if(m_samples >= ((m_dmalen & 2) ? 1 : 2))
m_isa->drq7_w(CLEAR_LINE);
}
@ -184,19 +183,19 @@ WRITE8_MEMBER(vis_audio_device::pcm_w)
break;
case 0x02:
m_data[0][m_index[0] & 0xf] = data;
break;
return;
case 0x03:
m_index[0] = data;
break;
return;
case 0x04:
m_data[1][m_index[1] & 0xf] = data;
break;
return;
case 0x05:
m_index[1] = data;
break;
return;
case 0x09:
m_dmalen = data;
break;
return;
case 0x0c:
m_count = (m_count & 0xff00) | data;
break;
@ -205,10 +204,10 @@ WRITE8_MEMBER(vis_audio_device::pcm_w)
break;
case 0x0f:
//cdrom related?
break;
return;
default:
logerror("unknown pcm write %04x %02x\n", offset, data);
break;
return;
}
if((m_mode & 0x10) && (m_count != 0xffff))
{
@ -766,5 +765,5 @@ ROM_START(vis)
ROM_LOAD( "p513bk1b.bin", 0x80000, 0x80000, CRC(e18239c4) SHA1(a0262109e10a07a11eca43371be9978fff060bc5))
ROM_END
COMP ( 1992, vis, 0, 0, vis, vis, driver_device, 0, "Tandy/Memorex", "Video Information System MD-2500", MACHINE_NOT_WORKING )
COMP ( 1992, vis, 0, 0, vis, vis, driver_device, 0, "Tandy/Memorex", "Video Information System MD-2500", MACHINE_IMPERFECT_GRAPHICS | MACHINE_IMPERFECT_SOUND )