Re: I found it! A very sorry looking MK14.
With 0,1, or 2 RAM chips I get the same result, 'X XXX XX', where X is a flickering digit.
With no ROMs, I get all digits, all segs.
In a few days I'm getting a set of brand spanking new TTL chips, so I can replace all those vintage bits.
I don't remember having all these problems 40 years ago.
This retro computing was easier when it was cutting edge.
Cheers,
Buzby
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