4 ms·
I own an original KIM-1 (that shipped on July 27, 1976; revision A, ceramic 6502/6530). See https://imgur.com/a/iCClwCb https://imgur.com/a/iCClwCb It works fla
by jgrahamc 3y ago
I own an original KIM-1 (that shipped on July 27, 1976; revision A, ceramic 6502/6530). See https://imgur.com/a/iCClwCb https://imgur.com/a/iCClwCb It works flawlessly. I actually did some programming of the KIM-1 in the mid-1980s for industrial control: https://blog.jgc.org/2013/04/how-i-coded-in-1985.html https://blog.jgc.org/2013/04/how-i-coded-in-1985.html
- classichasclass 3y agoThat looks nearly identical to my own Rev A. The one I have the prior owner built a small plywood and acrylic enclosure for. It's the original enclosures for these things that their original owners built that really give them personality, like this suitcase unit. The oldest KIM I'm personally aware of is a original (i.e., pre-Rev A) with a 6502 that still has the ROR bug. I should ask its owner what the date codes on that are.
- jgrahamc 3y agoInteresting. I should write some code for mine and check for that bug. I assume it was fixed by the time this shipped (my CPU is week 21 of 1976). I have an acrylic case for mine to protect it.
- classichasclass 3y agoYou might indeed have one with a bad ROR. My MOS documentation for the time says ROR would be "available" after "June, 1976." The Rev A here is 30th week 1976 and does not have the bug.