Sinclair ZX80 / ZX81 / Z88 Forums

40 SMD micro switches later and I now have the keyboard mounted on the zx80core.

Absolutely fantastic.

G

*goes off to find his white stick*

I am probably being really blind, but the Composite/Phono socket is missing from the parts list. I guess thats because it doesn't have a JXX number on the board.

G

The place where you put the v1.0 manuals seems to be down, I should really get my v1.0b board up and running as well

As a bonus this was the first time I had a chance to use logic analiser properly since I bought it years ago

About the SMD capacitors - I gave one more 10uF just to have a different amount of each capacitor value to distinct them. Unfortunately the values are not printed on. Yeah, I just got over eager and soldered the two, I went back and checked the parts list and realised what I had done. Now I need to...

Found it, got confused with the SMD caps and fitted C97 with a 10uF, replaced with the 1nF and I have the magic K

A15
Sync
Pixel

I have the bottom two positions of J96 (NMI) jumpered, top of J98.

Am I supposed to do anything with J94? Instructions are a little confusing around that, I have fitted SMDs to back, TV seems happy with signal apart from it being all black.

Built my zx80core today \o/

Unfortunately it is a bit too goth for me in that in only outputs black on black

My A15 seems to agree with the debugging guide.
I do not currently have access to my Oscilloscope only USB logic analyser

That easycap really struggles with the non-standard signals from most retro computers, I will be surprised if you get a valid pic from a zx81