On 6/12/2018 2:24 PM, David Wood wrote: > TL;DR - > A RMW operation should be possible without modifying anything but the > r/w signal on the bus according to most FPM datasheets I've studied, > but would require some pretty good timing to ensure the VIC-II has > completed its CAS cycle since the cart has to run blind relative to > RAS and CAS. It's already capable of counting DOT cycles so that > should be easy. I thought the VIC-II did the CAS cycle during PHI2=low half of the cycle. I can put it on the LA tonight, but is there a diagram already available showing the signals? JimReceived on 2018-06-12 23:00:04
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