Sinclair ZX80 / ZX81 / Z88 Forums

Likely a lot of bots or similar. Some other forums are experiencing something similar...

Mark

Can I assume that all of these should also work with the Timex Sinclair 1000? As a TS1000 is a ZX81 with a differently labelled keyboard, screened case, different modulator and 2K internal RAM instead of 1K, yes, 16K or larger capacity RAM packs for the ZX81 should work fine with a TS1000. Mark

Pokemon has in the past made modern RAM packs, but I don't think there are any currently available.

There have also been DIY designs.

Mark

As well as the offical Sinclair 16K byte RAM pack, there was the 2K/3K/4K ZX80 RAM pack (memory size depending on how many SRAM chips were fitted in it) that would work with the ZX81. Plus many third party manufacturers that produced various RAM packs. One of the best known for more stable RAM packs...

Hello and welcome to our forum Juz571!



I hope you enjoy this forum

You are welcome to ask questions!

Mark

Glad that you are now all sorted

Mark

The ZX81 uses mode 1 (IM 1) so does not care about what is on the data bus. Hence you don’t need to worry about /M1.

Mark

Lots get caught out by the UK700 producing 12V to 16V when off load, and 10V to 12V when on load.

Good that you are making progress.

Mark

Hello and welcome to our forum reanimate!



I hope you enjoy this forum

Nice set of 1980s computers and extra hardware

You are welcome to ask questions!

Mark

Hello and welcome to our forum Staffan!



I hope you enjoy this forum

You are welcome to ask questions!

Mark