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xbox_nv2a.cpp: set dma_get to 0 when fifo is enabled (nw)

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This commit is contained in:
yz70s 2020-04-21 19:39:45 +02:00
parent ae2449193f
commit 1e3ae4ac51
1 changed files with 5 additions and 16 deletions
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21
src/mame/video/xbox_nv2a.cpp
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@ -4816,7 +4816,7 @@ READ32_MEMBER(nv2a_renderer::geforce_r)
ret = x;
}
if ((offset >= 0x00100000 / 4) && (offset < 0x00101000 / 4)) {
//machine().logerror("NV_2A: read 100000[%06X] mask %08X value %08X\n",offset*4-0x00101000,mem_mask,ret);
//machine().logerror("NV_2A: read PFB[%06X] mask %08X value %08X\n",offset*4-0x00100000,mem_mask,ret);
if (offset == 0x100200 / 4)
return 3;
}
@ -4936,6 +4936,10 @@ WRITE32_MEMBER(nv2a_renderer::geforce_w)
if (e >= (sizeof(pmc) / sizeof(uint32_t)))
return;
COMBINE_DATA(pmc + e);
if (e == 0x200 / 4) // PMC.ENABLE register
if (data & 0x1100) // either PFIFO or PGRAPH enabled
for (int ch = 0; ch < 32; ch++) // zero dma_get in all the channels
channel[ch][0].regs[0x44 / 4] = 0;
//machine().logerror("NV_2A: write PMC[%06X]=%08X\n",offset*4-0x00000000,data & mem_mask);
}
else if ((offset >= 0x00800000 / 4) && (offset < 0x00900000 / 4)) {
@ -4957,21 +4961,6 @@ WRITE32_MEMBER(nv2a_renderer::geforce_w)
dmaput = &channel[chanel][0].regs[0x40 / 4];
dmaget = &channel[chanel][0].regs[0x44 / 4];
//printf("dmaget %08X dmaput %08X\n\r",*dmaget,*dmaput);
if (((*dmaput == 0x048cf000) && (*dmaget == 0x07f4d000)) || // only for outr2
((*dmaput == 0x045cd000) && (*dmaget == 0x07f4d000)) || // only for scg06nt
((*dmaput == 0x0494c000) && (*dmaget == 0x07f4d000)) || // only for wangmid
((*dmaput == 0x05acd000) && (*dmaget == 0x07f4d000)) || // only for ghostsqu
((*dmaput == 0x0574d000) && (*dmaget == 0x07f4d000)) || // only for mj2c
((*dmaput == 0x07ca3000) && (*dmaget == 0x07f4d000)) || // only for hotd3
((*dmaput == 0x063cd000) && (*dmaget == 0x07f4d000)) || // only for vcop3
((*dmaput == 0x07f4f000) && (*dmaget == 0x07f4d000)) || // only for ccfboxa
((*dmaput == 0x07dca000) && (*dmaget == 0x07f4d000))) // only for crtaxihr
{
*dmaget = *dmaput;
puller_waiting = 0;
puller_timer->enable(false);
return;
}
if (*dmaget != *dmaput) {
if (puller_waiting == 0) {
puller_space = &space;