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N64: Adjust SI timing . . . again.

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Happy 2016-04-21 14:23:07 -06:00
parent cb7924b731
commit 896f4bd21c
1 changed files with 6 additions and 1 deletions
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7
src/mame/machine/n64.cpp
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@ -2089,6 +2089,11 @@ void n64_periphs::si_dma_tick()
void n64_periphs::pif_dma(int direction) void n64_periphs::pif_dma(int direction)
{ {
if(si_status & 1)
{
si_status |= 8; //DMA Error, overlapping request
return; // SI Busy, ignore request
}
if (!DWORD_ALIGNED(si_dram_addr)) if (!DWORD_ALIGNED(si_dram_addr))
{ {
fatalerror("pif_dma: si_dram_addr unaligned: %08X\n", si_dram_addr); fatalerror("pif_dma: si_dram_addr unaligned: %08X\n", si_dram_addr);
@ -2127,7 +2132,7 @@ void n64_periphs::pif_dma(int direction)
} }
} }
si_status |= 1; si_status |= 1;
si_dma_timer->adjust(attotime::from_hz(10000)); si_dma_timer->adjust(attotime::from_hz(50000));
} }
READ32_MEMBER( n64_periphs::si_reg_r ) READ32_MEMBER( n64_periphs::si_reg_r )