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post5a miniPCI POST code display
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Part numbers post5a = miniPCI POST code display with test pins, RoHS compliant
Spec miniPCI format to fit WRAP boards and most modern notebook PCs. During power on self-test (POST), most PC BIOSes will write diagnostic codes to port 80h or port 84h (auto select, whichever is written first). Use post5a to display these codes on a dual digit LED display. Additional LEDs indicate the status of the power supply rails.
POST codes A good table of POST codes can be found at BIOS central.
Test pins J1: JTAG for PLD programming, manufacturing only
J2: RST, CLK, FRAME2# = FRAME# delayed by one cycle (filter assistance for logic analyzer), INTA#, INTB#, 3.3V, 5V, GND
J3: CBE3, GND, AD24..AD31
J4: CBE2, GND, AD16..AD23
J5: GND, PERR, DEVSEL, SERR, STOP, FRAME, TRDY, PAR, IRDY
J6: CBE1, GND, AD15..AD8
J7: CBE0, GND, AD7..AD0
PLD source .jed + .abl - for reference only.
Manufacturer PC Engines
Origin Taiwan
Schematics PDF
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