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Bi-Polar Proms For Sale

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Bi-polar PROMS

Bi-polar PROMs are ONE-TIME programmable devices which are typically smaller, but faster than eproms. Obviously, since they can only be programmed once, all PROMs for sale are NEW.

Also, PROMs do not program like EPROMs so not all programmers will be able to program PROMs (Needham's for instance, can not program PROMs )

Lastly, many similar or compatible PROMs have different identifying chip numbers depending on the Manufacturer. For instance SIG 82s123, MMI 6331, IM5610 and NS 74S288 are all the same thing, but do NOT program the same way. In my listing descriptions, I use SIGNETICS as the refence chip (ie 82s123) since it is most widely recognized, but may actually sell a compatible chip instead.

PLEASE verfiy that your programmer can program the EXACT PROM type listed for sale. (I know Intersil [IM] chips are very hard to program, and very few programmmers can do them )

I can program any bi-polar prom (...using the same cost structure as eproms) .

NB. If ordering less than 5 proms, a $3 shipping fee will be added.
Any order of 5 or more proms will include free shipping.

As always if you have any questions please send me an email.


82s123 (32 x 8 Tri-State) Bi-Polar Prom - $12.00
Actual (Compatible) Chip being sold is MMI 6331

Used in games like PacMan, Galaga, Tempest, Sound prom U3 on older Bally Pinballs, etc...

X-refs are MMI 6331/63S081, TI 18S030, Harris 7603, AMD 27S19, NS 74S288, IM5610

82s126 (256 x 4 Open-Collector ) Bi-Polar Prom - $12.00
Actual (Compatible) Chip being sold is MMI 6300

Used in games like PacMan (Sound 1m/3M) and other games

X-refs are MMI 6300/63S140, TI 24SA10, Harris 7610, AMD 27S20, NS 74S387

82s129 (256 x 4 Tri-Sate ) Bi-Polar Prom - $12.00
Actual (Compatible) Chip being sold is Intersil 5623

Used in games like Donkey Kong, Galaga, Centipede, Tempest, Warlords, etc...

X-refs are MMI 6301, TI 24S10, Harris 7611, AMD 27S21, NS 74S287, IM 5623

82s131 (514 x 4 Tri-Sate ) Bi-Polar Prom - $12.00
Actual (Compatible) Chip being sold is NS 74S571

Used in games like PunchOut and other games

X-refs are MMI 6306, Harris 7621, AMD 27S13, NS 74s571

82s137 (1024 x 4 Tri-Sate ) Bi-Polar Prom - $12.00
Actual (Compatible) Chip being sold is NS 74S573

Used in games like StarWars (Mathbox proms), Pengo, Lunar Rescue, etc...

X-refs are MMI 6353, TI 24S41, Harris 7643, AMD 27S33, NS 74S476/74S573

82s141 (512 x 8 Tri-Sate, 0.6 DIP ) Bi-Polar Prom - $12.00
Actual (Compatible) Chip being sold is NS 74S474

Williams Video Decoder chip used in many games (Defender, Joust, Robotron, etc...)

X-refs are MMI 6341, TI 28S46, Harris 7641, AMD 27S33, NS 74S474

82s147 (512 x 8 Tri-Sate, 0.3 DIP ) Bi-Polar Prom - $12.00
Actual (Compatible) Chip being sold is MMI 6349

Used in games like DonkeyKong 3 and other games

X-refs are MMI 6349, TI 24S42, Harris 7649, AMD 27S29, NS 74S472

82s181 (1024 x 8 Tri-Sate, 0.6 DIP ) Bi-Polar Prom - $15.00
Actual (Compatible) Chip being sold is Signetics 82S181

X-refs are MMI 6381, TI 28S86, Harris 7681, AMD 27S181, NS 87S181

82s185 (2048 x 4 Tri-Sate, 0.6 DIP ) Bi-Polar Prom - $15.00
Actual (Compatible) Chip being sold is Harris 7685

X-refs are MMI 6389/63S841, TI 24S81, Harris 7685, AMD 27S185, NS 87S185

82s321 (4096 x 8 Tri-Sate, 0.6 DIP ) Bi-Polar Prom - $15.00
Actual (Compatible) Chip being sold is Sig 82S321

X-refs are MMI 63S3281, Harris 76321, AMD 27S321, NS 87S321