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Retro PC Design  -  Bus Probe Board 

This board was designed to debug in hardware a SOL computer. However it can really be used in most S-100 systems. The board has been advertised from time to time on eBay. A very useful board for reviving old systems!


The board makes use of the XRDY line on the S-100 bus. It also controls the RUN signal (although not needed on a IMSAI for example) so it would also work with systems that do not have a front panel.

Features include:
    Address Bus - LED display
    Data Bus - LED Display
    Status Bus - LED Display
    Auxiliary Bus LEDs - User Configurable
    Single-Step Program Control
    Hardware Breakpoint - For debugging software
    Voltage Test Points.
The schematic for this board can be obtained here.
If you wish to obtain a board try here.


Retro PC Design  S-100 Boards
Bus Probe


This page was last modified on 10/25/2013