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Diag board for WillFA7

For use with my WillFA7 Williams MPU

components WillFA diag board




in action

For the 4x20 LCD display you can use the one from the 'Reichelt shop cart' or any other HD44780 compatible display ( LCD display on Aliexpress )

documentation

The WillFA7 diag board connected to the diag connector on the WillFA7 do provide display output and a subset of the game switches in order to be able to test WillFA7 'on the desk'.

WillFA7 diag controls:

5pin ICSP connector: to be able to program the PIC

contrast poti: for adjusting contrast of the LCD display

option switch: adjust (toggle) the display output: SYS3, SYS7, ..

game controls:

up-down/advance: to navigate in the Williams diagnostic menue

mem. prot: memory protection switch in coin door

Sol. Trig: Trigger for special solenoid #1

slam: slam switch

HS res. : High Score reset

Coins left/center/right: to be able to 'insert' coins

credit: credit button