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SCSP: hooked up DGATE functionality for DMA [Angelo Salese]

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This commit is contained in:
Angelo Salese 2013-08-28 16:10:14 +00:00
parent f114e1d978
commit 0e50452d8a
1 changed files with 32 additions and 8 deletions
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40
src/emu/sound/scsp.c
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@ -1349,20 +1349,44 @@ static void dma_scsp(address_space &space, scsp_state *scsp)
/* TODO: don't know if params auto-updates, I guess not ... */
if(scsp_ddir)
{
for(i=0;i < scsp->scsp_dtlg;i+=2)
if(scsp_dgate)
{
space.write_word(scsp->scsp_dmea, space.read_word(0x100000|scsp->scsp_drga));
scsp->scsp_dmea+=2;
scsp->scsp_drga+=2;
popmessage("Check: SCSP DMA DGATE enabled, contact MAME/MESSdev");
for(i=0;i < scsp->scsp_dtlg;i+=2)
{
space.write_word(scsp->scsp_dmea, 0);
scsp->scsp_dmea+=2;
}
}
else
{
for(i=0;i < scsp->scsp_dtlg;i+=2)
{
space.write_word(scsp->scsp_dmea, space.read_word(0x100000|scsp->scsp_drga));
scsp->scsp_dmea+=2;
scsp->scsp_drga+=2;
}
}
}
else
{
for(i=0;i < scsp->scsp_dtlg;i+=2)
if(scsp_dgate)
{
space.write_word(0x100000|scsp->scsp_drga,space.read_word(scsp->scsp_dmea));
scsp->scsp_dmea+=2;
scsp->scsp_drga+=2;
popmessage("Check: SCSP DMA DGATE enabled, contact MAME/MESSdev");
for(i=0;i < scsp->scsp_dtlg;i+=2)
{
space.write_word(0x100000|scsp->scsp_drga,0);
scsp->scsp_drga+=2;
}
}
else
{
for(i=0;i < scsp->scsp_dtlg;i+=2)
{
space.write_word(0x100000|scsp->scsp_drga,space.read_word(scsp->scsp_dmea));
scsp->scsp_dmea+=2;
scsp->scsp_drga+=2;
}
}
}