Sinclair ZX80 / ZX81 Forums

Did you swap the ULA for a known working one?

I have had zeddies which were fine until a key was pressed at which point they had various failures.

Welcome! Just seen this post. I can’t offer any help on fixing your Spectrum but have just tried one of mine and yes you can hear the tape loading from the speaker when you load from tape. Is a ULA from an issue 3 fully compatible with an issue 2 pcb? I know they changed the ULAs over the years. Goo...

Or get one of these. Rock steady output with no dot crawl!

http://www.fruitcake.plus.com/Sinclair/ ... erface.htm

I bought a ZX8-CCB from Sell My Retro and put it in a small project box along with an RF socket and three flying leads (to connect to the ULA pins). That works well. I see... good Idea thank you.. I think it can be clamped to the RF leads and GND elsewere.. Yes you can do that - I use this quite a ...

I bought a ZX8-CCB from Sell My Retro and put it in a small project box along with an RF socket and three flying leads (to connect to the ULA pins). That works well.

Welcome and good luck enjoying the ZX81 again!

RWAP wrote: ↑

Mon Feb 24, 2020 9:38 pm

Lardo Boffin wrote: ↑

Tue Feb 18, 2020 8:35 pm

I’ll take one please! Or two if nobody else is interested.

No one else has asked about them, so they are yours

Received with thanks!

Some image hosting kindly provided by RWAP.

http://www.rwapsoftware.co.uk/zx80/ZX80 ... Part1.jpeg
http://www.rwapsoftware.co.uk/zx80/ZX80 ... Part2.jpeg

Many thanks!

Thanks. I currently have to share my SD card between three devices.

First world problems...

RWAP wrote: ↑

Tue Feb 18, 2020 8:05 pm

I have a couple of small SD Cards available - I only need the cost of shipping reimbursing please.

Both are 256MB - might be ideal for someone lucky enough to have a ZXpand

Rich

I’ll take one please! Or two if nobody else is interested.