At 12:39 AM 2/17/99 +0000, you wrote: Okay, I'll try to be more clear... 8^) (And yes, I know "early" is the 50's around here. 8^) What I'm researching is computers that used the Centronics parallel port to access a floppy drive or other storage device. Mostly interested in PC's and compatibles, or computers that use a "PC-compatible" centronics port (like the Atari ST). It needs to be controlled by software only (no A/B/PRT switch like some Toshibas) and ideally needs no re-configuration before switching between drive and printer (or better still, offers a pass-through for the printer.) HP-IB/GPIB/IEEE-488 is interesting, and somewhat related, but not entirely relevant; same for SASI & SCSI. Also, anything after 1990 or so is too new. Thanks! --------------------------------------------------------------------- O- Uncle Roger "There is pleasure pure in being mad roger(a)sinasohn.com that none but madmen know." Roger Louis Sinasohn & Associates San Francisco, California http://www.sinasohn.com/