Sinclair ZX80 / ZX81 Forums

Option 4 works fine in my Spectrum.
Option 3 /OE will be the same as the /OE for a one bit solution.
Kind regards Paul

Hi Moggy, did you burn the 4k ROM twice into the 8k Eprom? I guess it needs to be there from 0-4k and from 4-8k
Kind regards Paul

ZesarUX supports zxpand as well.
Kind regards Paul

They will be available I guess next year in April. Made by the German ZX-TEAM.

Enigmachine wrote: ↑

Mon Sep 02, 2019 3:58 pm

TI99/4A's are more common than Zeddies so why not sacrifice one to do this. O

Because nothing compares to a real Cherry Keyboard with ZX81 professional printed keycaps.

Good morning Mark, I guess it's an issue 6A (from the subject)

The topic is very interesting and I would really like to help here but it's not an easy task. I have the Centronics interface and a Zeddy of course. But I need to save any results/images to something. I have both zxpand versions and zxblast and also zxnu. But any of these interfere with the ROM cont...

Sorry, I didn't understand part of the question. I'll retry when I'm less tired tomorrow. I will release a program soon that installs Memotext in RAM starting at 8192. After that it asks for RS232 or CENTRONICS and copies the corresponding memotech interface ROM to the 14k-16k area. This should be t...

I have the Centronics interface myself, so I will extract this and merge it with the help of zxpand.
Does anyone have the rs232 module?

Bloodnok wrote: ↑

Fri Aug 16, 2019 3:13 am

Just when I thought I had run out of things to do

As far as I know there is the Sinclair C5 ULA missing as well.
There is definitely a small market for this.
Kind regards Paul