Sinclair ZX80 / ZX81 / Z88 Forums

which clone are you building ?

The first problem sounds like a capacitor value that is not correct somewhere.

The second depends on the build, on my ZX81+38 v1.9 by Mahjongg the ROM is even a 32KB, but it uses only the first 8KB that contains the original ROM of the ZX81.

Hello, I just built on, and I made a mechanical keyboard from another project designed for the Spectrum, and adapted it to the ZX81+38
I am sooooo happy ... it works very well ...

power input is a simple USB cable
video output is composite

perfect

woow ... wait ... does the MC-10 have a Z-80 ... in that case, the Alice is not a "french" MC-10 ... it's a total other computer .. with a MC6803P https://www.obsolete-tears.com/photos/matra_alice_32.jpg Although the Website says that it's exactly the same :/ the Tandy TRS-80 MC-10 https://www.obsol...

Hello Paul, welcome to the forum ... I am quite new here too ... but I am not new the to the sinclair world, and not to the TI99/4A either ... the TI99/4A was the first computer i've ever wrote a program on. And when I was done, I played a lot of TI-Invaders, Parsec, Q-Bert and Mister Munch. plenty ...

Hello everyone, Like Yannick, I am from France, I was born in 1970 and I started quite early playing with a TI99/4A, my aunt's actually. I could save enough money at the time to buy in 1982 a ZX81 ... I wanted a Memotech MTX512, but not affordable enough and very complicated to buy in France at the ...