Internal Connector Pinouts

On the main circuit board, J8 is an unpopulated 5×2 connector near the CPU blob. From flipping bits, I've determined that the pinout is as below. NOTE: This pinout has not been verified independently (we welcome verification).

Pin Signal
J8-1 +3VDC Supply
J8-2 PC22
J8-3 PC29
J8-4 PC27
J8-5 PC28
J8-6 PC21
J8-7 PC18
J8-8 PC20
J8-9 PC19
J8-10 Ground

J7 is an unpopulated 4×2 connector. It contains the 4 ADC inputs. (Full scale appears to be 1.8V.)

Pin Signal
J7-1 ADC channel 1
J7-2 ADC channel 0
J7-3 ADC channel 2
J7-4 Ground
J7-5 ADC channel 3
J7-6 Ground
J7-7 +3VDC Supply
J7-8 Ground

On the main circuit board, the serial programming connector is visible when the slide-off back cover is removed to replace batteries. It appears to provide the following signals. *NOTE: This pinout has not been verified independently (we welcome verification).**

Pad Signal
J31 +3VDC Supply
J32 Reset
J33 Serial out (logic level)
J34 Ground
J35 Serial in (logic level)
J36 Erase?