Sinclair ZX80 / ZX81 / Z88 Forums

It might be easier to build a small PCB to buffer the bus for any peripheral... Then you could also test your theory on other devices. You could also include a short length of ribbon cable to an edge connector so that other peripherals didn't have to fit the toastrack's tilt. Don't forget the clock ...

In case you're having trouble finding 4164 ram chips, you can get 10 for about GBP2.5 from Aliexpress. Delivered. I started mixing chips, but found that some of the chips in my 128K toastrack were a little unreliable, and while they tested OK, I had to replace them. Had I simply replaced the lot to ...

Thank you !

Hi All,

Are there any preexisting circuit layouts for DIY ROMs. or otherwise a set of details for mechanical properties of the card to make your own?

Regards
David

No, not really sure how to, and would prefer not to pry it apart to put in a burner...

But looking around, I found other rom images of the demo - It's the one with a picture of Sir Clive on the right side of the screen.

David

Hi Mark,

For some reason I've seen quite a few without battery covers, so I was assuming it's a fairly common thing.

Do you know much about the demo rom?

David

Hi all, Seems I have an early z88 that I just bought, and it comes with a demo ROM that tells customers all about what it does. Like an attract mode and it explains how pipedream works, and what the z88 can do, and shows different tools being used while narrated by the text onscreen. Is there anythi...

As an accomplished threadmancer, I once again raise this thread from the dead, though mainly to make my first post and thank those who contributed to this thread before me, since it helped me out. I recently bought a faulty Interface 1 that was crashing the Spectrum when an Interface 1 command was t...