Panasonic HHC ROM 'capules'

[Jeff_Birt]

Tried looking at the VCC turn on of capsule socket last evening on a different HHC. Same result, never see VCC applied, not even a blip that the scope can trigger on. I did capture the /8 of PHI0 though (at CPU), and also A13 at the capsule socket.

There must be something else going on w.r.t. the capsule sockets. The way they did A12, according to hand drawn schematics, is odd. At this point I'm not sure how it finds out there is a ROM in the socket.