Sinclair ZX80 / ZX81 / Z88 Forums

Hi Paul, Thanks for the welcome. It's really interesting that because that's exactly what I've just gone and done - bought a TZXuino - or some such similar device. When it arrives I will try it out. I have two ZX81's - one works fine but the other doesn't :-( I shall wait for the results when the ne...

Hi everyone, I'm John from Great Ayton in North Yorkshire, boyhood home of Captain James Cook. My first experience of computing was actually with a Commodore PET when I was at school at the tender age of 13! But, my first computer was in fact a Sinclair Spectrum and I loved it and still have it. My ...

Hi Mark, Thank you, I will do. I'm running a random maze generator program and it's been going for well over 4 hours now - no problem at all. I have a 16k RAM pack attached. I've just tried saving and that appears to work! It's recording something on the tape. What I'm not getting either saving or l...

Thanks for the help. I found the fault. The ULA-socket was bad. Christian Hi Christian, forgive the daft question, I'm new to this work! How did you diagnose the fault was the socket? I have a potential problem which I think is perhaps the fault of the socket but how do I test that? hope you can he...

Hi everyone, I wonder if anyone can help? I have a ZX81 and the ULA was faulty. I removed it and replaced it with th vULA81 which not only replaces the ULA but provides the back porch etc. All went well and the machine is working well, except, that everytime I type LOAD "" the '81 crashes and I have...