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Allow CPU to write too much data to Mystique ILOAD (and ignore all superfluous

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data). Fixes G-Police on Mystique with default Windows 98 SE driver.
This commit is contained in:
SarahW 2020-03-30 21:28:00 +01:00
commit feaf6d456c
1 changed files with 4 additions and 7 deletions
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11
src/vid_mga.c
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@ -2235,9 +2235,8 @@ static void mystique_accel_iload_write_l(uint32_t addr, uint32_t val, void *p)
break;
case DMA_MODE_BLIT:
if (!mystique->busy)
fatal("mystique_iload_write_l: !busy\n");
blit_iload_write(mystique, val, 32);
if (mystique->busy)
blit_iload_write(mystique, val, 32);
break;
default:
@ -2470,10 +2469,8 @@ static void run_dma(mystique_t *mystique)
// pclog(" DMA_MODE_BLIT %08x %08x %08x %08x\n", mystique->dma.secaddress & DMA_ADDR_MASK, mystique->dma.secend & DMA_ADDR_MASK, mystique->dwgreg.dwgctrl_running, mystique->maccess_running);
mystique->dma.secaddress += 4;
if (!mystique->busy)
fatal("mystique_iload_write_l: !busy\n");
blit_iload_write(mystique, val, 32);
if (mystique->busy)
blit_iload_write(mystique, val, 32);
words_transferred++;
if ((mystique->dma.secaddress & DMA_ADDR_MASK) == (mystique->dma.secend & DMA_ADDR_MASK))