Bugged ROM issue one ZX81 up for sale
Posted: Fri Jun 21, 2019 11:09 pm
I recently bought a ZX81 from a popular auction site and it turned out to be an issue one with the very early bugged ROM. Photos on here of the PCB along with the result of PRINT SQR 0.25. viewtopic.php?f=7&t=2153&start=190#p34185
I don’t like to refurb these early ones before offering them up on here in case anyone is looking for one.
It has an early ULA - 8112.
It has what looks like an early PSU.
It has the early cassette cables and RF lead for the TV.
The keyboard membrane has had it and definitely needs replacing.
The case is in fair condition but is missing a screw and has no feet. I will put in a set of softer sponge feet - this is the sort that most likely would have been fitted.
I have tested it with a 16K RAM pack plugged in and loaded The Gauntlet. I did the same with a ZXpand.
I was using a ChromaSCART and my Memotech keyboard for testing with.
Included in the sale:-
ZX81 with bugged ROM
PSU and cables.
Set of soft foam feet.
If anyone is interested or wants more details please message me. It will be £25 plus p&p from the UK. I’m happy to post abroad but it can get expensive. Buyer to pay import taxes etc. Sorry, went into eBay mode there!
Some photos
I don’t like to refurb these early ones before offering them up on here in case anyone is looking for one.
It has an early ULA - 8112.
It has what looks like an early PSU.
It has the early cassette cables and RF lead for the TV.
The keyboard membrane has had it and definitely needs replacing.
The case is in fair condition but is missing a screw and has no feet. I will put in a set of softer sponge feet - this is the sort that most likely would have been fitted.
I have tested it with a 16K RAM pack plugged in and loaded The Gauntlet. I did the same with a ZXpand.
I was using a ChromaSCART and my Memotech keyboard for testing with.
Included in the sale:-
ZX81 with bugged ROM
PSU and cables.
Set of soft foam feet.
If anyone is interested or wants more details please message me. It will be £25 plus p&p from the UK. I’m happy to post abroad but it can get expensive. Buyer to pay import taxes etc. Sorry, went into eBay mode there!
Some photos
