Update on my 7854 diagnostics project
As promised an update about my 7854 diagnostics project:
I've finished all tests with my ROM card replacement. After that I've tweaked the layout a little bit and ordered a final sample.
These are pictures of the earlier prototypes:
Last week a good friend borrowed me his MicroLab. So at the moment I have a (nearly) complete 7854 digital diagnostics sytsem at home.
Pictures of the system can be found on Tekwiki:
I've also uploaded the bin files.
Next step is to analyze and understand the system in detail.