Tom Marchant wrote, in part: > I remember later being able to shake the memory boards from that unit and
>hear the chips rattling in their packages. The memory boards were about a >foot square and IIRC they were populated with 256 bit dynamic RAM chips. Heh, later on we had a Formation 4000 PCM (0.25MIPS!) with a whopping 4MB, as 64K RAM chips. At one point, a POR caused it to decide it had 16K chips instead of 64K, and it was quite unhappy that it couldn't find the other 48MB. Turned out to be a sloppy solder job that had shorted some connection. Ah, the good (?) old days! ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
