I know there are some ZX81 fans on this forum, so I thought I would ask here.
I have developed an interface for the ZX81 using the Propeller.
It gives the ZX81 the following features:
3 channel sound (tone/noise/pwm)
Wii Classic Controller interface
VGA - The video modes constrained by the Propeller RAM.
1) Low Resolution (128x120 pixels, every pixel can be any of 64 colors)
2) Medium Resolution (256x192 pixels, 4 colors, every 8x8 cell can be any four of the 64 colors)
3) High Resolution (512x192 pixels, 2 colors, every 16x8 cell can be any two of the 64 colors)
Everything is controlled by POKE and PEEK so it is usable from BASIC.
I am looking for one or two people to be beta testers. You need to be able to test the interface with BASIC and assembly. Of course you will need to have a ZX81 or TS1000 computer too.
If you are interested please reply here, or send me a private message. I will choose in the next week or two.