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machine/amigafdc.cpp: simplify dsksync behaviour, makes swordsod and itcame to boot without hacks at very least (#10895)

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Angelo Salese 2023-02-13 09:52:56 +01:00 committed by Olivier Galibert
parent e76e82c9e4
commit d93b5a2cf4
1 changed files with 4 additions and 18 deletions
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22
src/devices/machine/amigafdc.cpp
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@ -289,25 +289,11 @@ void amiga_fdc_device::live_run(const attotime &limit)
if(dma_state == DMA_WAIT_START) {
cur_live.bit_counter = 0;
if(!(dsklen & 0x3fff))
if(dsklen & 0x3fff)
dma_state = DMA_RUNNING_BYTE_0;
else
dma_done();
else if(dsklen & 0x4000) {
dskbyt |= 0x2000;
cur_live.bit_counter = 0;
dma_value = dma_read();
} else {
LOGSYNC("%s: DSKSYNC on %06x %d\n", this->tag(), dskpt, dma_state);
dma_write(dsksync);
}
} else if(dma_state != DMA_IDLE) {
LOGSYNC("%s: DSKSYNC on %06x %d\n", this->tag(), dskpt, dma_state);
dma_write(dsksync);
cur_live.bit_counter = 0;
} else if(cur_live.bit_counter != 8)
cur_live.bit_counter = 0;
}
}
dskbyt |= 0x1000;