Schematic of Cosmic Cruncher Cartridge.
ROM is a Commodorer proprietry ROM, made by MOS, with following markings:
MOS
901273-01
(C)1982CBM
4982

C1 is 100nF

COMPONENT SIDE:
The numbering is different than one in PCB! In PCB, its right->left, here's left->right!
1 - nc
2 - C1/1, ROM24
3 - nc
4 - nc
5 - nc
6 - nc
7 - nc
8 - nc
9 - nc
10 - J1/1 (CLOSED) 
11 - J2/1 (OPEN)
12 - nc
13 - nc
14 - ROM17
15 - ROM16
16 - ROM15
17 - ROM14
18 - ROM13
19 - ROM11
20 - ROM10
21 - ROM9
22 - ROM12, C1/2

SOLDER SIDE (from left to right, PCB's solder side facing you, connector down):
1 - ROM12 (as Component side pin 22)
2 - ROM8
3 - ROM7
4 - ROM6
5 - ROM5
6 - ROM4
7 - ROM3
8 - ROM2
9 - ROM1
10 - ROM23
11 - ROM22
12 - ROM19
13 - ROM18
14 - ROM21
15 - nc
16 - nc
17 - nc
18 - nc
19 - nc
20 - nc
21 - nc
22 - nc

OTHER:
J1/2 -> J2/2, ROM20.