Introducing FLAP adapters! These are intended to help you replace your broken or missing Bipolar PROM for arcade PCBs and other projects.
I had trouble finding a way to program old PROMs, often used on older boards for color information, so I decided to come up with a solution. These are sold with 55ns flash memory, which is fast enough for arcade boards.
Available types:
FLAP-32x8: 32 x 8 PROMs. Replaces 82S123, 82S123A, 63S081, 6331-1, 18S030, 7603-5, 27S19AC, 74S288, 5610, 7051. Also open collector variants 82S23, 6330-1, 18SA030, 7602-5, 27A18AC, 74S188, 82S23A.
FLAP-256x4/512x4: 256 x 4 and 512 x 4 PROMs. Replaces 82S126, 82S129, 82S130, 82S131 and their variants. 82S129, 6301-1, 24S10, 7611-5, 29661, 27S21, 74S287, 3621, 82S129A, 63S141, 7611A, 27S21A, 7052, 82S126, 6300-1, 24SA10, 7610-5, 29660, 27S20, 74S387, 3601, 82S126A, 63S140, 7610A, 27S20A, 82S131, 6306-1, 7621-5, 29611, 27S13, 74S571, 3622, 82S131A, 63S241, 7621A, 27S13A, 74S571A, 3622A, 82S130, 6305-1, 7620-5, 29610, 27S12, 74S570, 3602, 82S130A, 63S240, 7620A-5, 27S12A, 74S570A, 3602A.
FLAP-1024x4: 1024 x 4 PROMs. Replaces 82S137 and variants. 82S137, 6353-1, 24S41, 7643-5, 29641, 27S33, 74S573, 3625, 82S137A, 63S441, 7643A, 74S573A, 82S137B, 63S441A, 7643B, 27S33A, 74S573B, 7054.
All cross-reference data from Mike's Arcade.
A FLEP-82S123-L replacing an 82S123 at 6L on a Galaxian.
A FLEP-82S123-L and a FLEP-82S123-R replacing 63S081s at IC6 and IC7.
The page will be updated as I test more and more boards.
| Game | PROM | 55ns Tested? | Suggested Kits |
|---|---|---|---|
| Nibbler | 2x 63S081 (82S123) | Works | 2x FLAP-32x8 |
| Galaxian | 1x 82S123 | Works | 1x FLAP-32x8 |
| Dig Dug | 1x 82S123 (1R) 1x 82S129 (4G) |
Works | 1x FLAP-32x8 1x FLAP-256x4/512x4 |
| Midway MCR SSIO | 1x 82S123 (12D) | Works | 1x FLAP-32x8 |
FLAPs are now available on eBay!
32x8 82S123 - https://www.ebay.ca/itm/146426730048
1024x4 82S137 - https://www.ebay.ca/itm/146426786377
256x4 / 512x4 82S126/129/130/131 - https://www.ebay.ca/itm/146426799598