Desperado
Veteran Member
- Joined
- Nov 25, 2017
- Messages
- 6,827
ok Dave...so for now do I leave everything like this?No need to unsolder the sockets.
This is the test screen I was talking about previously that wasn't passing.
IF the video characters that are present on the screen are correct (to my PETTESTER documentation) THEN this indicates that the 6502 CPU can't (correctly) readback the characters that were put on the screen.
The issue is likely to be one (or more) of the data bus buffers between the CPU and the video RAM.
I am currently on my way out of the office now...
Dave