RWAP wrote:
What is needed to run the UDG version on the normal ZX81 - is this the same mod to the 16K RAM pack as mentioned for the HRG graphics?
No, it needs ram, that gets its address lines from the rom socket. I have such a ram only in my web-server Zeddy. Maybe some day I could port that program to use Matthias' HRG and his UDG.
Siggi
PS: The UDG version runs on EO.
My ZX81 web-server: online since 2007, running since dec. 2020 using ZeddyNet hardware http://zx81.ddns.net/ZxTeaM