On 29 Aug 2011 at 18:41, Tony Duell wrote:
Do you ahve, or know anybody who has, this P2
versions? The 10L8 has
nofeedback terms, so the bare chip, remvoed from the PCb, must
implelenmt purely combinatorial functions. While I don't think HALs
ever had the fuse map verification circuitry (I've never mananged to
find one you can read out in a PAL programmer0, since it's purely
combinatorial you could try all 1024 combinations of the inputs,
record the outputs and do some kind of logic reduction on the result.
I'll cast around a bit and see. 6300/M24 boxes are fairly uncommon
here, although I expect that they're pretty common in Europe under
the Olivetti brand. Judging from the P2 schematics, the 10L8 looks
to have the same programming across all (P2, P4, P8) adapters, so
that does widen the field a bit.
BTW, the 6300 I have runs fine with a VGA card installed. Doubtless
that (or an EGA) was the original reason for the modification.