This is based on jwdonaldson's schematic.
.------------.
P00 | 1 18 | VCC
P01 | 2 17 | P22
P02 | 3 16 | P21
P03 | 4 15 | P20
NC | 5 14 | NC
CL2 | 6 13 | P13
CL1 | 7 12 | P12
RES | 8 11 | P11
GND | 9 10 | P10
.------------.