I have a working 74ALS188 PROM. This is a (32 x 8) 256-Bit TTL PROM. I need to duplicate this working 74ALS188 PROM but I still have no clue where to start with in terms of required programming device, nor do I know the programming algorithm for this PROM. Can anyone please shed some light on how this PROM can be duplicated and where to still find a programmer which is capable to handle this really ancient component?
Thanks in advance. Joachim