Update on my 7854 diagnostics project


Holger L├╝bben
 

Hi

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:

ROM card:
http://methodyn.de/p/proto11.jpg

Keyboard-overlay card:
http://methodyn.de/p/proto12.jpg

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:

http://w140.com/tekwiki/wiki/067-0911-00
http://w140.com/tekwiki/wiki/067-0961-00
http://w140.com/tekwiki/wiki/MicroLab_I

I've also uploaded the bin files.

Next step is to analyze and understand the system in detail.

Holger

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