Search found 2 matches

by tynemouthsoftware
Fri May 04, 2018 11:11 pm
Forum: Hardware
Topic: zx spectrum in zx81 case
Replies: 63
Views: 16122

Re: zx spectrum in zx81 case

I also had an issue with one of the clocks, but in my case it was the 4.43MHz clock used for the colour timing. I used an 74HCU04 (the same as used on the +2 if I remember correctly). http://blog.tynemouthsoftware.co.uk/2018/02/keyboard-options-for-zx-max-48.html If the 14Mhz isn't running, that mig...
by tynemouthsoftware
Sat Feb 03, 2018 3:05 pm
Forum: Hardware
Topic: zx spectrum in zx81 case
Replies: 63
Views: 16122

Re: zx spectrum in zx81 case

Thanks to McKlaud for sending me a PCB and a CPLD, I've built up a ZX Max 48 and looked at some keyboard options. The keyboard overlay was an interesting challenge, and I think it has come out very nicely. https://3.bp.blogspot.com/-Gx_aFVEKMEs/WnWuoBrN1kI/AAAAAAAAN40/ts9HfC2_Ob0euqPk5IEEd3waumqt7hO...