19 Nov
2002
19 Nov
'02
8:10 a.m.
> So, now I happen to own a KIM which I belive is
the real #1
> board. The CPU is a MOS MCS 6502 dated 4675, white ceramic.
Hans, you big show-off ;-)
As such it is
from the very first batch of 6502s, of course
includeing the infamous ROR bug (no, Intel wasn't the first
to sell buggy CPUs :). It ends not just there, but it might
even bee THE first 6502 - or at least the first to be used
in a manufactured computer.
That's a pretty nice little item. I'm curious about this ROR bug - I don't
remember talk of it from the time. Do you know when it was fixed? I happen
to have an OSI 300 (a very primitive 6502 trainer) with a similar CPU
datecoded 4775 on it, I would guess it's buggy too.