Note: this listing is for the BARE BOARD only.
This is for the TIN plated board. The GOLD plated version is listed here. You may also want an LED alignment jig here on tindie.

New for version 1.2b: - Slow step potentiometer moved to right angle on side with series resistor to add minimum to adjustment; - Improved step reset circuit; - Step LED inverted (now normally off) to make steps more visible; - Fiddled with location of various things like jumper positions, off board step connector, etc.

The bus monitor Supreme v1.2b is a 125mm x 150mm 2-layer PCB that offers the following features:

• Binary and hexadecimal display of the address and data byte
• Binary display of all 8085 status and bus status and control lines
• Manual Single step
• Automatic slow step
• Bus cycle type filtering (memory read, memory write, opcode fetch, I/o output, I/o input, interrupt)
• Address match breakpoint
• Data byte match breakpoint
• Software control of step mode, step filter, and breakpoints
• Speaker (bit-bang toggle)

NOTE: This a new version and should be considered to be a very mature prototype. These have been extensively tested but please be warned that there is still an opportunity for a hardware bug to show up. for this reason, I would prefer these go to individuals who accept that as a challenge rather than a disappointment