Sinclair ZX80 / ZX81 / Z88 Forums

It runs on my EO (v1.39) with 1K or 16K ram configured and standard ROM

Perfect, thanks.

I'll have a cuppa and a read.

Dave

Hi, been a while since I posted and as usual, I need some advice ;) I am trying to bring a ZX81 rev. 3 back to life. I have socketed all ICs and replaced the transistors. I'm using Andy Rea's ULA81 (I believe its the version 1 as it doesn't have the Altera chip and only has one jumper on top of the ...

The description has Z80PIOB1 so I'd say its an I/O interface.

Z80 PIO and CPU are the same size.

Why dont you get one of the SD interfaces? These do the same thing and you dont need to have dozens of floppies taking up space.

I still have my Discovery double 3.5" drive for the Spectrum. There must have been half a dozen other alternatives...

If you want a ZX80 then have a look here...

https://www.thefuturewas8bit.com/minstrel-zx80.html

Definitely make it interactive, not just pressing ENTER. Use CLS and/or PRINT AT to display descriptive text at a common place (top of screen?) Stopping with 5/14 (or any error) message doesn't give a good impression. Cant comment on the German, but you may have made some errors when using Google tr...

That loads OK, but its not really an adventure or a game. The only user interaction is to press the enter key and get more text to display.

What were you trying to achieve?

Tried 48K ram, still doesnt run. Can you post a screen shot?