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version 1.8, 2004/08/11 16:09:04
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version 1.10, 2004/08/15 07:52:16
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Line 32 void z80dmap(void) {
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Line 32 void z80dmap(void) {
|
| } |
} |
| |
|
| do { // dma_lp |
do { // dma_lp |
| |
if (dma.increment) { |
| |
if (!(flag1 & 0x20)) { |
| |
*off1 += (flag1 & 0x10)?1:-1; |
| |
} |
| |
if (!(flag2 & 0x20)) { |
| |
*off2 += (flag2 & 0x10)?1:-1; |
| |
} |
| |
} |
| |
dma.increment = 1; |
| addr = *off1; |
addr = *off1; |
| if (flag1 & 8) { |
if (flag1 & 8) { |
| dat = iocore_inp(addr); |
dat = iocore_inp(addr); |
| } |
} |
| else { |
else { |
| dat = mem_read8(addr); |
dat = z80mem_read8(addr); |
| } |
} |
| if (dma.cmd & 1) { |
if (dma.cmd & 1) { |
| addr = *off2; |
addr = *off2; |
|
Line 45 void z80dmap(void) {
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Line 54 void z80dmap(void) {
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| iocore_out(addr, dat); |
iocore_out(addr, dat); |
| } |
} |
| else { |
else { |
| mem_write8(addr, dat); |
z80mem_write8(addr, dat); |
| } |
} |
| } |
} |
| if (dma.cmd & 2) { |
if (dma.cmd & 2) { |
|
Line 54 void z80dmap(void) {
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Line 63 void z80dmap(void) {
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| dma.MACH_FLG = 1; |
dma.MACH_FLG = 1; |
| } |
} |
| } |
} |
| if (dma.mode != 1) { |
|
| dma.DMA_STOP = (dma.WR[5] ^ dma.ready) & 8; |
|
| if (dma.DMA_STOP) { |
|
| dma.working = FALSE; // 既にセットされてる筈だが |
|
| goto dma_stop; |
|
| } |
|
| } |
|
| if (!(flag1 & 0x20)) { |
|
| *off1 += (flag1 & 0x10)?1:-1; |
|
| } |
|
| if (!(flag2 & 0x20)) { |
|
| *off2 += (flag2 & 0x10)?1:-1; |
|
| } |
|
| |
|
| dma_stop: |
|
| dma.BYT_N.w++; |
dma.BYT_N.w++; |
| if (dma.BYT_N.w == 0) { |
if (dma.BYT_N.w == 0) { |
| dma.working = FALSE; |
dma.working = FALSE; |
|
Line 81 dma_stop:
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Line 76 dma_stop:
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| goto intr; |
goto intr; |
| } |
} |
| if (!dma.working) { |
if (!dma.working) { |
| goto intr; |
return; |
| } |
} |
| } while(dma.mode); |
} while(dma.mode); |
| return; |
return; |
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