Search found 3349 matches
- Sat Jan 16, 2021 9:44 am
- Forum: Hardware
- Topic: ZX80 machine that shows a cursor but no text
- Replies: 6
- Views: 249
if your 'scope is a two channel type, you can try to sync to IC9 pin 1 (S/L) for per character or to SYNC (IC19 pin 6 or R32).
If you are getting an output signal from IC9, next up, is to test IC20 pins 4, 5 and 6.