Sinclair ZX80 / ZX81 / Z88 Forums

Ok. I was afraid it did get too little power, but the original power supply is ok.

Do you use the original power supply with 9V or do you use your own at 5V?

Hi Morten.

Martin from Denmark here.

Welcome to the forum. The discussion for Lambda 8300 has it own section on these forums.

I have a couple of Lambda 8300s as well. One working, one partly working and one broken.

That's amazing to hear. Welcome!

It's a huge task to use this with ZX81. First off it assumes to replace the ROM, as it want's to use the RST rutines in start of ROM. That means opening up the ZX81 to replace the ROM, or make an external cartridge for it. On top of that, it means reimplementing all routines for creating a picture o...

Sorry, I didn't see the last rule.

Have you ever tried programming for the Lambda 8300? It has base memory of 2k, but with a different charset, and no hires or pseudo-hires.

What is your most favorite instruction/feature when coding on the Z80 in assembly?

Lardo Boffin wrote: ↑Mon Oct 30, 2023 2:55 pm I got this zeddy today. The top half is ruined with glue so isn’t really fit for anything

That looks like a great keyboard. Looks like someone put in real switches, and made it fit ZX81’s small footprint.

Thanks for the link.