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DMA change of the day (December 31st, 2024)

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Actually add DMA PS/2 (MCA) XFER commands 0x9 (Set DMA Mask), 0xa (Reset DMA mask) and 0xb to addr 0x1a in both r/w parts.
This commit is contained in:
TC1995
2024-12-31 20:43:02 +01:00
parent 0f61db03ef
commit 17f9ed66da
1 changed files with 26 additions and 0 deletions
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26
src/dma.c
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@@ -665,6 +665,19 @@ dma_ps2_read(uint16_t addr, UNUSED(void *priv))
temp = dma_c->arb_level;
break;
case 9: /*Set DMA mask*/
dma_m |= (1 << dma_ps2.xfr_channel);
break;
case 0xa: /*Reset DMA mask*/
dma_m &= ~(1 << dma_ps2.xfr_channel);
break;
case 0xb:
if (!(dma_m & (1 << dma_ps2.xfr_channel)))
dma_ps2_run(dma_ps2.xfr_channel);
break;
default:
fatal("Bad XFR Read command %i channel %i\n", dma_ps2.xfr_command, dma_ps2.xfr_channel);
}
@@ -767,6 +780,19 @@ dma_ps2_write(uint16_t addr, uint8_t val, UNUSED(void *priv))
dma_c->arb_level = val;
break;
case 9: /*Set DMA mask*/
dma_m |= (1 << dma_ps2.xfr_channel);
break;
case 0xa: /*Reset DMA mask*/
dma_m &= ~(1 << dma_ps2.xfr_channel);
break;
case 0xb:
if (!(dma_m & (1 << dma_ps2.xfr_channel)))
dma_ps2_run(dma_ps2.xfr_channel);
break;
default:
fatal("Bad XFR command %i channel %i val %02x\n", dma_ps2.xfr_command, dma_ps2.xfr_channel, val);
}