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r198008 Wednesday 5th July, 2023 at 14:46:50 UTC by R. Belmont
devices/ncr53c90.cpp: Don't subtract FIFO contents from transfer count when DMA is started. [R. Belmont]
* The 5390/5394/5396 manuals all agree transfer count only decrements on DACK in DMA write mode,
 and 68040 Macs require it.
* Also tested on sun4_60, Solaris boots fine.  P-Mac will investigate other uses.
[src/devices/machine]ncr53c90.cpp


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