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Version 1.1, so far, so good.

A project log for SBC-85 Bus Monitor Supreme

Bus monitor card for SBC-85 ecosystem. Includes binary and hex display of bus and data byte, single step, slow step, and breakpoints.

craigCraig 03/25/2020 at 23:490 Comments

Received a fresh shipment of boards from PCB house a couple of days ago and among them was version 1.1 of the bus monitor supreme.  I have pretty much assembled everything and am well into the testing phase.  All the issues that i wanted to correct from version 1.0 seem to have been corrected OK, except one capacitor that I had added to make the single step reset signal more robust.  Fortunately, I was able to depopulate and save all of the LEDs and nearly all the capacitors and other pricey items.  However, in the desoldering we lost the momentary single step push-button so I need to get another one on order.

I really like having both the hexadecimal and binary display of the address and data.  I also really like the machine cycle type filter, it is impressive to see it jump from memory write to write, read to read, and so forth.  Heck, I think I like everything so far about this bus monitor.

If everything continues to go well with the testing, I will release this version of the build files on the SBC-85.COM project site.

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