Search found 45 matches

by avrovulcan
Mon Jan 01, 2024 5:46 pm
Forum: Hardware
Topic: ZX80 Repair.
Replies: 12
Views: 1347

Re: ZX80 Repair.

Hi, everyon thanks for the advice. I'm more than happy with Woking on PCB's such as this as I'm Head of R&D for the UK's last welding power source manufacturer. But that doesn't mean to say I know everything and having seen various versions of ROM's used in these machines it's best to ask the expert...
by avrovulcan
Mon Jan 01, 2024 3:24 pm
Forum: Hardware
Topic: ZX80 Repair.
Replies: 12
Views: 1347

Re: ZX80 Repair.

Hi guys. Cheers for the help. Please see the picture. I have no background on this machine, other than the solder looks professional rather than kit built. TBH the wire could have been jammed in there for 'reasons'?? There appear to be no other roach or bodge wires anywhere on the PCB or on the ROM....
by avrovulcan
Mon Jan 01, 2024 7:25 am
Forum: Hardware
Topic: ZX80 Repair.
Replies: 12
Views: 1347

Re: ZX80 Repair.

Hi thanks for the replys.

I have taken a couple of pictures already. But I'm assuming I have to use a photo hosting site to upload. Can anyone suggest a free one as I'm loathed to pay a fee for something I will only use on the odd occasion.

Cheers

Andy
by avrovulcan
Sat Dec 30, 2023 1:43 pm
Forum: Hardware
Topic: ZX80 Repair.
Replies: 12
Views: 1347

ZX80 Repair.

Hi all, Looking for some advice. I bought a ZX80 about 5 years ago of Ebay. Only things i could see that we're obviously wrong was IC6 (74LS157) was cracked and I replaced this quite early on. Since then the computer has been sitting in my 'to-do' pile. Today I pulled it out and replaced the resonat...
by avrovulcan
Fri Aug 04, 2023 8:59 am
Forum: GAMES
Topic: Does this ZX81 Bomber game exist?
Replies: 16
Views: 9356

Re: Does this ZX81 Bomber game exist?

I remember this one. Ill have a look when I get home tonight. I may still have the original tape. No luck, I assume? Hi Mate. If I have the tape it wiil be down in Plymouth where my mum lives. I'm down that way at the end of next week so i'll have a look up the loft. I have a rough idea where it is...
by avrovulcan
Mon Jul 31, 2023 2:40 pm
Forum: GAMES
Topic: Does this ZX81 Bomber game exist?
Replies: 16
Views: 9356

Re: Does this ZX81 Bomber game exist?

I remember this one. Ill have a look when I get home tonight. I may still have the original tape.
by avrovulcan
Wed Oct 26, 2022 10:41 am
Forum: Hardware
Topic: Filesixty Keyboard
Replies: 19
Views: 4390

Re: Filesixty Keyboard

I remember this.

I had one fitted just before I got my Memotech Keyboard.

If I can ever find the original case for my ZX81, (for some unknown reason I took the case off ???) it should still be attached.
by avrovulcan
Tue Oct 25, 2022 12:12 pm
Forum: Hardware
Topic: ‘Tatung 81’ (ZX81 in a case)
Replies: 29
Views: 7797

Re: ‘Tatung 81’ (ZX81 in a case)

Hope you get it sorted.

Nice looking machine, very unusual
by avrovulcan
Thu Sep 15, 2022 4:27 pm
Forum: Hardware
Topic: My solution to RAM module wobble
Replies: 19
Views: 4941

Re: My solution to RAM module wobble

I think my solution back in the day was to use a bit of Blu-Tac
by avrovulcan
Sat Aug 27, 2022 6:29 pm
Forum: Hardware
Topic: Andy Rea's original ULA design blog/schematic.
Replies: 13
Views: 2522

Re: Andy Rea's original ULA design blog/schematic.

Cheers for posting the link. This will come in very useful.