Sega Space Ship pinout (Space Wars Clone)

Hi all.

Mark Shostak wrote :

> Just wondering, where does the "reset" signal (pin 21) terminate
> on the board (i.e. chip & pin)?

This input goes to E4 pin 13.
It has nothing to do with the /RESET signal generated by C8.
I didn't check yet, but I assume it goes to panel button
"fuel & ammo reset".

On the SEGA PCB, there's *no* jumper at all.
There is only a 4-ways microswitch.
O7 (F2 pin 12) and "EXTERNAL_HIGH" input are not used :
no wire is soldered on the edge connector that plugs into
the PCB.

Regards,

-- 
Fab
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