Sinclair ZX80 / ZX81 / Z88 Forums

A significant new version of EightyOne (v1.29) is now available. It can be found here: Splendid! Congratulations for the excellent work! The new version also includes support for the Improved Wait circuit functionality devised by Wilf Rigter to avoid the ZX81 needlessly running ~10% slower than it ...

MrVertigo wrote: ↑Sun May 29, 2022 2:31 pm Do you know if EightyOne can handle the simultaneous key press? My actual ZX81 is broken at the moment.

EO, SZ81, ZEsarUX and iOS ZX81 Emulator can handle simutaneous key press.

Paul wrote: ↑Sun May 15, 2022 4:47 pm Does the Chroma fix work without Chroma?
I only use ZXPand and UDG4ZXPand.

Yes, it works!

Set UDG4ZXPAND to CHR$128.

Moggy wrote: ↑Sun May 15, 2022 1:00 pm In which case I'll forget about it.

I don't think you should forget this, we can have as many versions as our creativity allows and your version is very good.

Call me a purist, but it just feels wrong to add color to a ZX-81. Part of the charm and quirkiness of that little computer is its lack of color. To each his own I suppose... Well, I agree that the absence of color has its charm, but on the other hand the extensibility potential of the beloved Zedd...

Coincidentally I also made my UDG version, curious to see the differences

Updated and added more songs:



Hardware demo:

https://youtu.be/i_WUmhJ9QLk

A few days ago I came across a youtube video of a program that Tim Follin published on Your Sinclair in 1987 and that plays music in three sound channels. Immediately occurred to me that this program could easily be converted to run on the ZX81 which proved correct, so I share with you the result, h...

Oh, I feel ashamed as I was the one who started the discord so I sincerely apologize to anyone who was offended. It wasn't my intention, it was just an unfortunate joke. :oops: As a Portuguese-speaking user, there are many more characters missing and this has never been an impediment to extracting m...

No, but there is a useless £