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Old 21st Mar 2021, 12:42 am   #184
SiriusHardware
Dekatron
 
Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 11,482
Default Re: I found it! A very sorry looking MK14.

What was the rationale behind having the old OS at 0200-03FF, do you remember? I had imagined you must have had them both mapped at 0000-01FF with the chip enables switched either-or in some way.
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