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i8089: Fix 16-bit target DMA transfers without DRQ

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This commit is contained in:
Dirk Best 2019-02-23 11:02:33 +01:00
parent 6d4ba81467
commit 2d3c2599a6
1 changed files with 2 additions and 3 deletions
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5
src/devices/cpu/i8089/i8089_channel.cpp
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@ -374,11 +374,10 @@ int i8089_channel_device::execute_run()
// do we need to read another byte? // do we need to read another byte?
if (BIT(m_r[PSW].w, 1) && !BIT(m_r[PSW].w, 0) && !m_store_hi) if (BIT(m_r[PSW].w, 1) && !BIT(m_r[PSW].w, 0) && !m_store_hi)
{ {
m_store_hi = true;
if (CC_SYNC == 0x02) if (CC_SYNC == 0x02)
{
m_store_hi = true;
m_dma_state = DMA_WAIT_FOR_DEST_DRQ; m_dma_state = DMA_WAIT_FOR_DEST_DRQ;
}
else else
m_dma_state = DMA_STORE_BYTE_HIGH; m_dma_state = DMA_STORE_BYTE_HIGH;
} }