09-05-2016, 11:24 AM
Hi.
Back when the ZX81 came out, there were one or two "upgrades" for the ZX80 to remove the screen jitter.
I redesigned one a few wears ago and put it on my web pages.
If you are intersted, you can see it here...
http://searle.hostei.com/grant/zx80/zx80nmi.html
Have fun!
Grant
Back when the ZX81 came out, there were one or two "upgrades" for the ZX80 to remove the screen jitter.
I redesigned one a few wears ago and put it on my web pages.
If you are intersted, you can see it here...
http://searle.hostei.com/grant/zx80/zx80nmi.html
Have fun!
Grant
