Retropin,
This has been great - thanks a million.
Testing IC15 (8 as GND)
3 3.64
2 1.63
7 3.59
6 3.56
14 1.55
15 4.2
9 4.26
10 4.23
IC 16 (using 1 as GND - 24 pin chip)
3 3.21
2 2.68
7 3.16
6 2.85
14 3.57
15 1.41
9 2.57
10 2.32
Some of these are as you suggested - others are not
IC17 - you mentioned pin 7 as GND, but using circuit diagram it says pin 12 is GND (again 24 pin chip)
Using pin 7 as GND
1 0.24
2 0.2
5 0.6
6 0.16
13 0.66
12 2.26
9 0.47
8 0.14
IC18 (Big PIA Display Output Chip - circuit diagram says 1 is GND?)
using 7 as GND
1 -0.03
2 2.57
5 2.37
6 0.00
13 0.33
12 0.34
9 0.00
8 0.00
I await your instruction.....
