This is meant to eventually be a cross-reference for Atari arcade game PCBs and the various ICs on the boards. I've gone over most of the PCBs I own, noted information about the PCB itself, and tried to list all of the custom Atari part numbers present on the board. I didn't bother with anything less than 20 pins. Hopefully this list will be useful.

Sorted by Part Number

137304-2002 LETA Off the Wall
Shuuz
Rampart (x2)
Blasteroids
System II CPU
BadLands
137415-101 SLAGS Vindicators (x2)
System I Cartridge (x4)
Gauntlet (x2)
Escape from the Planet of the Robot Monsters (x2)
137418-101 Vindicators
Xybots
137418-102 System I Main
137418-103 Vindicators
Xybots
137418-104 System I Main
137419-101 GPC Gauntlet
System I Main
Escape from the Planet of the Robot Monsters
137419-103 SYNGEN Gauntlet
System I Main
Escape from the Planet of the Robot Monsters
137419-104 PFHS Moto Frenzy
Road Riot 4WD
Pit Fighter
Hydra
Skull & Crossbones
Cyberball (x2)
Vindicators
Gauntlet
137430-001 System II CPU
Gauntlet
137526-001 SCOM ThunderJaws
Skull & Crossbones
Xybots
137536-001 LB Relief Pitcher
Off the Wall
Batman (x2)
Shuuz
Rampart
ThunderJaws (x2)
Vindicators
Xybots (x2)
Escape from the Planet of the Robot Monsters (x2)
BadLands
137550-001 SOS Moto Frenzy
Road Riot 4WD (x2)
Rampart
Pit Fighter (x2)
Hydra (x2)
Klax (x3)
Skull & Crossbones (x4)
Cyberball(7)
toobin (x2)
Blasteroids (x2)
BadLands
137552-001 VMATCH Cyberball
Blasteroids
BadLands
137593-001 MOB Relief Pitcher
Off the Wall
Batman
Shuuz
Rampart
ThunderJaws
Klax
Skull & Crossbones
Escape from the Planet of the Robot Monsters
137656-00x VAD Relief Pitcher
Off the Wall
Batman
Shuuz
ThunderJaws
137657-001 SHIFT Relief Pitcher
Off the Wall
Batman
Shuuz
ThunderJaws
137665-1020 Road Riot 4WD

Sorted by Board

System I Main

PCB Part No. A043096SYS I LSI MAIN
ROM ID No. 136032
Oscillators 14.31818
CPUs MC68010L8
Customs ??? 8719, 137418-102 [40pin DIP, 5J]
??? 8714, 137418-104 [40pin DIP, 1J]
??? 8619, 137419-101 [40pin DIP, 1C]
??? 8714, 137419-103 [40pin DIP, 9E]

Gauntlet

PCB Part No. A043201GAUNTLET
ROM ID No. 136037
Oscillators 14.31818
CPUs MC68010L8
Customs ??? 8534, 137415-101 [28pin DIP, 1K/2K]
??? 8534, 137419-101 [40pin DIP, 11L]
??? 8535, 137419-103 [40pin DIP, 8R]
??? 8535, 137419-104 [40pin DIP, 11K]
??? 8534, 137430-001 [40pin DIP, 14L]

Road Runner (System 1)

PCB Part No. A043466SYSTEM I LSI CART 3
ROM ID No. 136040
Oscillators --
CPUs --
Customs ??? 8551, 137415-101 [28pin DIP, B5/D5/F5/H5]

720 (System 2)

PCB Part No. A042571ATARI SYSTEM II CPU
ROM ID No. 136047
Oscillators 14.31818 & 20.000
CPUs DEC 21-17311-02
Customs VLSI 645 V D727B, VGC7205-0672, 137304-2002 [40pin DIP, row 7]
??? 8645 137430-001 [40pin DIP, row 6/row 7]

Road Blasters (System 1)

PCB Part No. A043969SYSTEM I LSI CART 4
ROM ID No. 136048
Oscillators --
CPUs --
Customs ??? 8713, 137415-101 [28pin DIP, B5/D5/F5/H5]

APB (System 2)

PCB Part No. A042571ATARI SYSTEM II CPU
ROM ID No. 136051
Oscillators 14.31818 & 20.000
CPUs DEC 21-17311-02
Customs VLSI 652 V E241Q, VGC7205-0672, 137304-2002 [40pin DIP, row 7]
??? 8720 137430-001 [40pin DIP, row 6/row 7]

Xybots

PCB Part No. A044423XYBOTS
ROM ID No. 136054
Oscillators 14.31818
CPUs SCN68000C8N64
Customs ??? 8714 137418-101 [40pin DIP, 15K]
??? 8714 137418-103 [40pin DIP, 12E]
VLSI 730 V H792B, 137526-001 [20pin DIP, 20E]
Fujitsu MB87316, 8473 Z05, 137536-001 [40pin DIP, 8J/9J]

Blasteroids

PCB Part No. A044326BLASTEROIDS
ROM ID No. 136057
Oscillators 14.31818
CPUs MC68000P8
Customs VLSI 732V E2411, VGC7205-0672, 137304-2002 [24pin DIP, 8A]
Motorola SOS, 8751 XYACZK, 137550-001 [40pin DIP, 4E/10L]
Motorola VMA, 8804A YCADZK, 137552-001 [40pin DIP, 8L]

Vindicators

PCB Part No. A044402ROMALOT
ROM ID No. 136059
Oscillators 14.31818
CPUs MC68010P8
Customs ??? 8725 137415-101 [28pin DIP, 11P]
??? 8729 137415-101 [28pin DIP, 11R]
??? 8714 137418-101 [40pin DIP, 15K]
??? 8714 137418-103 [40pin DIP, 12K]
??? 8551 137419-104 [40pin DIP, 15M]
Fujitsu MB87316, 8743 Z04, 137536-001 [40pin DIP, 15D]

Toobin'

PCB Part No. A044058TOOBIN
ROM ID No. 136061
Oscillators 32.000
CPUs MC68010P8
Customs Motorola SOS, 137550-001 [40pin DIP, 7B/8B]

Cyberball

PCB Part No. A044283CYBERBALL
ROM ID No. 136064
Oscillators 14.31818
CPUs MC68000P8 x2
Customs ??? 8845, 137419-104 [40pin DIP, 13N/13M]
Motorola SOS, 137550-001 [40pin DIP, 24B/25B/14K/14M/16M/12N/12M]
Motorola VMA, 137552-001 [40pin DIP, 8A/9A]

Escape From The Planet Of The Robot Monsters

PCB Part No. A046147-01
ROM ID No. 136069
Oscillators ???
CPUs ???
Customs ??? 137415-101 [28pin DIP, 53U/53S]
??? 137419-101 [40pin DIP, 105P]
??? 137419-103 [40pin DIP, 125B]
??? 137536-001 [40pin DIP, 75U/92U]
??? 137593-001 [84pin PLCC, 90K]

Skull & Crossbones

PCB Part No. A046902SKULL AND CROSSBONES
ROM ID No. 136072
Oscillators 14.31818
CPUs MC68000P8
Customs ??? 8932, 137419-104 [40pin DIP, 200L]
VLSI 819 V M4476, 137526-001 [28pin DIP, 120E]
Motorola SOS, 137550-001 [40pin DIP, 30L/30N/200N/100H]
VLSI 8912AV U0975, VGT8001-6206, 137593-001 [84pin PLCC, 140K]

BadLands

PCB Part No. A047193-01
ROM ID No. 136074
Oscillators ???
CPUs ???
Customs ??? 137304-2002 [40pin DIP, 20C]
??? 137536-001 [40pin DIP, 15N]
??? 137550-001 [40pin DIP, 25M]
??? 137552-001 [40pin DIP, 17U]

Klax

PCB Part No. A047441KLAX SOS
ROM ID No. 136075
Oscillators 14.31818MHz
CPUs MC68000P8
Customs Fujitsu MB37316, 8950 Z12, 137536-001 [40pin DIP, 17P]
Motorola SOS, ZKZKAC8947, 137550-001 [40pin DIP, 17R/17T/9Y]
VLSI 9003AV 101427, VGT8001-6206, 137593-001 [84pin PLCC, 12S]

ThunderJaws

PCB Part No. A047364THUNDER JAWS
ROM ID No. 136076
Oscillators 14.31818
CPUs MC68000P8 x2
Customs VLSI 9006AV W60625, VGT7205A0698, 137526-001 [28pin DIP, B14]
Fujitsu MB87316, 9002 Z13, 137536-001 [40pin DIP, E4/F4]
VLSI 9003AV 101426, VGT8001-6206, 137593-001 [84pin PLCC, K7]
VLSI 9114AV 173235, VGT8001-6364, 137656-002 [84pin PLCC, D7]
VLSI 9021AV Y70422, VGT7906-6311, 137657-001 [40pin DIP, M8]

Hydra

PCB Part No. A047896-01G1
ROM ID No. 136079
Oscillators 14.31818
CPUs MC68HC000P12F 16 MHz
Customs ??? 8932 137419-104 [40pin DIP, 60H]
Motorola SOS, ZKZKAE8949, 137550-001 [40pin DIP, 110J/120J]

Pit Fighter

PCB Part No. A047896-01G1
ROM ID No. 136081
Oscillators 14.31818
CPUs MC68HC000P12F 16 MHz
Customs ??? 8932 137419-104 [40pin DIP, 60H]
Motorola SOS, ZKZKAE8949, 137550-001 [40pin DIP, 110J/120J]

Rampart

PCB Part No. A048869RAMPART
ROM ID No. 136082
Oscillators 14.31818
CPUs MC68000P8
Customs VLSI 9009AV Y08621, VGC7205A0672, 137304-2002 [24pin DIP, 12A]
VLSI 9009AV Y08621, VGC7205A0672, 137304-2002 [24pin DIP, 13A]
Fujitsu MB87316, 8950 Z12, 137536-001 [40pin DIP, 1F]
Motorola SOS, ZKZKAE8949, 137550-001 [40pin DIP, 11L]
VLSI 9003AV 104A17, VGT8001-6206, 137593-001 [84pin PLCC, 2K]

Shuuz

PCB Part No. A047365SHUUZ
ROM ID No. 136083
Oscillators 14.31818MHz
CPUs MC68000P8
Customs VLSI 721V E2411, VGC7205-0672, 137304-2002 [24pin DIP, 50F]
Fujitsu MB87316, 8950 Z12, 137536-001 [40pin DIP, 85S]
VLSI 9003AV 101426, VGT8001-6206, 137593-001 [84pin PLCC, 70S]
VLSI 9013AV 118791, VGT8001-6309, 137656-001 [84pin PLCC, 50S]
VLSI 9019AV Y70517, VGT7906-6311, 137657-001 [40pin DIP, 100R]

Batman

PCB Part No. A048987-01BATMAN
ROM ID No. 136085
Oscillators 14.31818
CPUs MC68HC000P12F 16MHz
Customs Fujitsu MB7316, 9003 Z14, 137536-001 [40pin DIP, 11B/11C]
VLSI 8937AV W0473, VGT8001-6206, 137593-001 [84pin PLCC, 10F]
VLSI 9037AV 146757, VGT8001-6364, 137656-002 [84pin PLCC, 6F]
VLSI 9020AV Y40625, VGT7906-6311, 137657-001 [40pin DIP, 12K]

Road Riot 4WD

PCB Part No. A049757FSG42-B
ROM ID No. 136089
Oscillators 14.31818 & 20.000
CPUs MC68HC000P12
Customs ??? 9151, 137419-104 [40pin DIP, 18J]
Motorola SOS, 137550-001 [40pin DIP, 12F/18D]
??? LC9208, 137665-1020 [44pin PLCC, 3E]

Off the Wall

PCB Part No. A049727ROUND
ROM ID No. 136090
Oscillators 14.31818MHz
CPUs MC68HC000P12F 16MHz
Customs VLSI 9110AV 170041, VGC7205A0672, 137304-2002 [24pin DIP, 16A]
Fujitsu MB87316, 8947 Z11, 137536-001 [40pin DIP, 1O]
VLSI 8937AV W0474, VGT8001-6206, 137593-001 [84pin PLCC, 8M]
VLSI 9025AV 132791, VGT8001-6364, 137656-002 [84pin PLCC, 8F]
VLSI 9037AV 101408, VGT7906-6311, 137657-001 [40pin DIP, 11N]

Relief Pitcher

PCB Part No. A049727ROUND
ROM ID No. 136093
Oscillators 14.31818MHz
CPUs MC68000P8
Customs Fujitsu MB87316, 8947 Z10, 137536-001 [40pin DIP, 1O]
VLSI 9209AV 210483, VGT8001-6206, 137593-001 [84pin PLCC, 8M]
VLSI 9033AV 136891, VGT8001-6364, 137656-002 [84pin PLCC, 8F]
VLSI 9021AV Y70422, VGT7906-6311, 137657-001 [40pin DIP, 11N]

Moto Frenzy

PCB Part No. A049810GX2
ROM ID No. 136094
Oscillators 14.31818MHz
CPUs MC68EC020FG16
Customs ??? 9220, 137419-104 [40pin DIP, 5L]
Motorola SOS, 137550-001 [40pin DIP, 3L]