Many of Atari's games used GALs to control the logic for memory addressing, video, and sound. Unfortunately, most of the GALs on shipping Atari boards have the security fuse blown, meaning that if one goes bad, you'll have a tough time trying to make a replacement. Furthermore, since GALs are EEPROM based, they are subject to deterioration over time.

Luckily, some equipment does exist that can read these protected GALs. So, as a service to anyone out there who needs a replacement GAL to fix an Atari board, I've decided to set up this page where you can grab the necessary JEDEC files for any GALs you need to replace.

Disclaimer: Although these reads were taken from working boards, I have not programmed replacements for these to verify that the JEDEC files are accurate. If you have any successes or failures using these, let me know and I'll annotate the lists below.

Finally, I'm just getting started, so if there's a board you'd particularly like to see on this let, drop me a line and I'll try to do it next. I have most Atari PCBs from Gauntlet forward, so there's a good chance I can help you out!

Guardians of the 'Hood | Hydra | Moto Frenzy | Pit Fighter | Relief Pitcher | Road Riot 4WD | Shuuz | Skull & Crossbones | ThunderJaws

Guardians of the 'Hood

Main PCB:

Location Part No. Part Type JEDEC Equations Success? Used For
3K 136092-0005 GAL16V8A Download Download -- Unknown
21L 136092-0006 GAL16V8A Download Download -- Unknown
15F 136092-0007 GAL16V8A Download Download -- Unknown
17J 136092-0008 GAL16V8A Download Download -- Unknown
6C 136092-0009 GAL16V8A Download Download -- Unknown
11S 136092-0011 GAL16V8A Download Download -- Unknown

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Hydra

Main PCB:

Location Part No. Part Type JEDEC Equations Success? Used For
15E 136079-1043 GAL16V8A Download Download -- Unknown
125K 136079-1044 GAL16V8A Download Download -- Unknown
40P 136079-1045 GAL16V8A Download Download -- Unknown
65D 136079-1046 GAL16V8A Download Download -- Unknown
40S 136079-1047 GAL16V8A Download Download -- Unknown
125F 136079-1048 GAL16V8A Download Download -- Unknown
120F 136079-1049 GAL16V8A Download Download -- Unknown
115F 136079-1050 GAL16V8A Download Download -- Unknown
105F 136079-1051 GAL16V8A Download Download -- Unknown
30N 136079-1052 GAL16V8A Download Download -- Unknown

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Moto Frenzy

Main PCB:

Location Part No. Part Type JEDEC Equations Success? Used For
14R 136094-0006A GAL16V8A Download Download -- Motion Objects
12L 136094-0007A GAL16V8A Download Download -- Playfield
17L 136094-0008A GAL16V8A Download Download -- Palette
7N 136094-0009A GAL16V8A Download Download -- Playfield
5N 136094-0010A GAL16V8A Download Download -- Video
5R 136094-0011B GAL16V8A Download Download -- Horizontal Sync
7R 136094-0012A GAL16V8A Download Download -- Vertical Sync
25D 136094-0013A GAL16V8A Download Download -- Addressing
22R 136094-0014A GAL16V8A Download Download -- Motion Objects
23S 136094-0015A GAL16V8A Download Download -- Motion Objects
23R 136094-0016A GAL16V8A Download Download -- Motion Objects
27D 136094-0017A GAL16V8A Download Download -- Addressing
25K 136094-0018A GAL16V8A Download Download -- Addressing
3N 136094-0019B GAL20V8A Download Download -- Motion Objects

Sound PCB:

Location Part No. Part Type JEDEC Equations Success? Used For
17C 136085-1038 GAL16V8A Download Download -- Unknown
20C 136085-2046 GAL16V8A Download Download -- Unknown

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Pit Fighter

Main PCB:

Location Part No. Part Type JEDEC Equations Success? Used For
15E 136081-1043 GAL16V8A Download Download -- Unknown
40P 136079-1045 GAL16V8A Download Download -- Unknown
65D 136079-1046 GAL16V8A Download Download -- Unknown
40S 136079-1047 GAL16V8A Download Download -- Unknown
125F 136079-1048 GAL16V8A Download Download -- Unknown
120F 136079-1049 GAL16V8A Download Download -- Unknown
115F 136081-1050 GAL16V8A Download Download -- Unknown
105F 136081-1051 GAL16V8A Download Download -- Unknown
30N 136079-1052 GAL16V8A Download Download -- Unknown

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Relief Pitcher

Main PCB:

Location Part No. Part Type JEDEC Equations Success? Used For
15F 136093-0002 GAL16V8A Download Download -- Addressing
11R 136093-0003 GAL16V8A Download Download -- Video
5N 136093-0004 GAL16V8A Download Download -- Motion Objects
3F 136093-0005 GAL16V8A Download Download -- Palette
5F 136093-0006 GAL16V8A Download Download -- Palette

Upper PCB:

Location Part No. Part Type JEDEC Equations Success? Used For
3E 136093-0008 GAL16V8A Download Download -- Unknown
8A 136093-0009 GAL16V8A Download Download -- Unknown
15A 136093-0010 GAL16V8A Download Download -- Unknown

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Road Riot 4WD

Main PCB:

Location Part No. Part Type JEDEC Equations Success? Used For
3K 136089-1005 GAL16V8A Download Download -- Unknown
21L 136089-1006 GAL16V8A Download Download -- Unknown
15F 136089-1007 GAL16V8A Download Download -- Unknown
17J 136089-1008 GAL16V8A Download Download -- Unknown
6C 136089-1009 GAL16V8A Download Download -- Unknown
11S 136089-2011 GAL16V8A Download Download -- Unknown

Sound PCB:

Location Part No. Part Type JEDEC Equations Success? Used For
17C 136085-1038 GAL16V8A Download Download -- Unknown
20C 136085-2046 GAL16V8A Download Download -- Unknown

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Shuuz

Main PCB:

Location Part No. Part Type JEDEC Equations Success? Used For
55C 136083-1050 GAL16V8A Download Download -- Addressing
45E 136083-1051 GAL16V8A Download Download -- Audio
32L 136083-1052 GAL16V8A Download Download -- Video
85N 136083-1053 GAL16V8A Download Download -- Priority
97N 136083-1054 GAL16V8A Download Download -- Motion Objects

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Skull & Crossbones

Main PCB:

Location Part No. Part Type JEDEC Equations Success? Used For
10F 136072-1142 GAL16V8A Download Download -- Priority
110E 136072-1143 GAL16V8A Download Download -- Addressing

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ThunderJaws

Main PCB:

Location Part No. Part Type JEDEC Equations Success? Used For
12/13E 136076-1070 GAL16V8A Download Download -- Addressing
13J 136076-1071 GAL16V8A Download Download -- Addressing
5/6N 136076-1072 GAL16V8A Download Download -- Alpha Banking
2H 136076-1073 GAL16V8A Download Download -- Motion Objects
3/4L 136076-2074 GAL16V8A Download Download -- Priority
2L 136076-1075 GAL20V8A Download Download -- Palette
1L 136076-1076 GAL20V8A Download Download -- Palette

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