***Phoenix 485 Sound PROM***

Image from an original Phoenix 512x8 sound PROM which differs from the later Williams SOUND1 ROM which you also encounter in Phoenix games from time to time.

Suitable PROM's

-AMD 27S31
-Harris 7641-5
-Intel 3624
-National 74S474
-TI 28S46
-Raytheon 29625
-MMI6341-1 or 63S485
-Signetics 82S141

You can quadruple the image and program it in a 2716 too - or program it in the last 512 bytes block ($600 offset)

Regards, MarAlb