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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.
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82s123 (32 x 8 Tri-State) Bi-Polar Prom - $20.00 |
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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
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82s126 (256 x 4 Open-Collector ) Bi-Polar Prom - $20.00 |
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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
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82s129 (256 x 4 Tri-Sate ) Bi-Polar Prom - $20.00 |
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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
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82s131 (514 x 4 Tri-Sate ) Bi-Polar Prom - $25.00 |
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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
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82s137 (1024 x 4 Tri-Sate ) Bi-Polar Prom - $25.00 |
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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
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82s141 (512 x 8 Tri-Sate, 0.6 DIP ) Bi-Polar Prom - $25.00 |
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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
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82s147 (512 x 8 Tri-Sate, 0.3 DIP ) Bi-Polar Prom - $25.00 |
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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
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82s181 (1024 x 8 Tri-Sate, 0.6 DIP ) Bi-Polar Prom - $25.00 |
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Actual (Compatible) Chip being sold is Signetics 82S181
X-refs are MMI 6381, TI 28S86, Harris 7681, AMD 27S181, NS 87S181
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82s185 (2048 x 4 Tri-Sate, 0.6 DIP ) Bi-Polar Prom - $25.00 |
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Actual (Compatible) Chip being sold is Harris 7685
X-refs are MMI 6389/63S841, TI 24S81, Harris 7685, AMD 27S185, NS 87S185
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82s321 (4096 x 8 Tri-Sate, 0.6 DIP ) Bi-Polar Prom - $25.00 |
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Actual (Compatible) Chip being sold is Sig 82S321
X-refs are MMI 63S3281, Harris 76321, AMD 27S321, NS 87S321
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