Thread: Ortonview PCB
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Old 13th Aug 2021, 8:11 am   #320
Mark1960
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Join Date: Mar 2020
Location: Kitchener, Ontario, Canada
Posts: 1,297
Default Re: Ortonview PCB

Yes, the boards might not arrive for another week or two, but they could also turn up any day now.

I think its unlikely to be a problem with crosstalk at the kind of frequencies the mk14 and ortonview are running. Edge transition times from the PIC might be fast enough to cause ringing but should be settled before the control signals are active at these kind of access times. I was thinking about adding series resistors in place of the buffers but I’ll stick to the basic design until I confirm the memory corruption without the address bus capacitors, verify the capacitor fix and then try some experiments.
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