Sinclair ZX80 / ZX81 / Z88 Forums

I know your problem, it is because the image you are trying to make work is not assigned to a virtual drive. The user manual is comprehensive but IMHO, not very clear for the first time users, I had quite a struggle with it first. The concept of directories, banks, drives, images can get very very c...

Guys, Sorry for the very late update on this. Somehow I did not get notified of the replies, and then I totally forgot I posted here. I sincerely apologize to the ones that replied. Here is the update: 1) No loading sound problem fixed. Looking thru the issue 2 and issue 3 schematics, I noticed just...

Hi, I am working on an IF1 project at the moment, I have 2 working original Rubberkeys (one issue 2, and one issue 3) I've built one issue 4V custom board, and now about to build one Harlequin 128 v4A. I only have one original IF1 and I don't want to swap it around these machines whenever I want to ...

Hello all, I found this forum while searching for a fix to my problem. My 48K issue 2 was sitting in a box since late 80's. I decided to bring it back to life. A brief "what I did" is like this: 1) Did a complete recap. 2) Changed the broken keyboard membrane with a new one. 3) All the IC's removed,...