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Old 9th Nov 2020, 2:15 pm   #96
circuitryboy's Avatar
Join Date: Jun 2012
Location: Bristol, UK.
Posts: 55
Default Re: I found it! A very sorry looking MK14.

Have you 'scoped the A3-A0 inputs to IC12 and all o/ps from IC13? If these look OK then the KYBD routine in either Monitor is executing correctly.
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