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Old 23rd Feb 2021, 11:58 pm   #639
Mark1960
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Join Date: Mar 2020
Location: Kitchener, Ontario, Canada
Posts: 1,297
Default Re: Non-working Commodore PET 3016

Quote:
Originally Posted by SiriusHardware View Post
Quote:
Originally Posted by Mark1960 View Post
I think setting up a NOP test would be a good next step.
How about the databus buffers? Change or don't change for now?
I think setting up the NOP test first before removing the buffers.

Running NOP should move the chip select pulses closer together as every cycle would be a read. Also there should be a burst of chip select on one prom, followed by a burst from the next.
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