Note that this is a challenging project and at this point, documentation is not organized. You can download schematics and SCELBI documents from scelbi.com. Documentation is sparse, a few notes scattered among the MEA and SCELBI sales documents. My blog contains some of what I have learned, but not all of it.
The oscilloscope digital card requires rework, which is documented (incorrectly at this point) on my blog. I needed to make changes to the keyboard interface to make my PS/2 keyboard adapter work, and I’ve bypassed a resistor on the oscilloscope analog board in order to make blanking work better with my Tektronix 465. All that said, as far as I can tell at this point, the boards do match the original SCELBI designs.
Software is a work in progress. I’m working on the MEA compatible EPROM code this week. It will be quite different than the example code that I posted on my blog a few days ago.
Cost is $75 for the set of three boards.
I you are not in the USA, add $15 for international shipping.
Send email to firstname.lastname@example.org for more information