PC Engines PCI Post Code Display - Motherboard Diagnostic Display is used to write diagnostic codes on PC BOIS. Dual digit LED display indicates codes and power supply rails.
NOTE: The standard diagnostic code is available at BIOS central.
Use with: POSTRD
Post Codes: A comprehensive table of POST codes can be found at BIOS central
Schematics: PDF
PLD source: .pld + .jed - for reference only