Re: MK14 memory upgrade
Hmm, strange. I'm just going to have to check it all again. I even went so far as to check that the A9-A10-A11 lines actually go to the right edge connector fingers on the issue VI PCB (...they do, of course).
The 74LS27 should be OK, came from RS - unfortunately I can't just unplug it and drop it into my device tester because I have soldered it pins-flat onto the copper side of a bit of veroboard.
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