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Mark1960 · 25th Oct 2020, 7:03 pm

Is there a guard time between setting NENIN to boot the SC/MP off the bus and driving the address on the bus from the vdu?

If the SC/MP is performing a write to memory, I think there should be a hold time on the address to ram to allow the NWDS to return inactive and possibly also a slight hold time after NWDS is high.

25th Oct 2020, 7:03 pm	#583
Mark1960 Octode Join Date: Mar 2020 Location: Kitchener, Ontario, Canada Posts: 1,298	Re: Mk14 vdu Is there a guard time between setting NENIN to boot the SC/MP off the bus and driving the address on the bus from the vdu? If the SC/MP is performing a write to memory, I think there should be a hold time on the address to ram to allow the NWDS to return inactive and possibly also a slight hold time after NWDS is high.