50 pin SCSI to 50 pin centronics

From: Iggy Drougge <optimus_at_canit.se>
Date: Thu Apr 12 07:15:15 2001

On Wed, 11 Apr 2001, Tony Duell wrote:

> IIRC, the RS232 standard specifies a 25 pin connector. So strictly there
> are no 9 pin RS232 ports. If you mean why do PC/AT machines have a DE9P
> for the serial port, it was because (a) 9 pins is enough for the active
> signals on said port and (b) you can fit a DE and a DB on a single PC
> bracket, so you could have a combined parallel/serial adapter card. Which
> IBM introduced with the PC/AT IIRC.

Oh, but then you lose a lot of fun. The Amiga DB25 serial port features
among others audio output on some pins. =)

> And Apple used the 8 pin mini-DIN on the Mac+ and later because there
> wasn't room for the DE9 connector used on the earler Macs. Hardware
> hackers have been complaining ever since -- those mini-DINs are about the
> worst connectors in the world to wire!

Try a DIN-13 for size.
Received on Thu Apr 12 2001 - 07:15:15 BST