Prices to pay for old computers...

From: Ward Donald Griffiths III <>
Date: Sun May 24 06:38:53 1998

Frank McConnell wrote:
> I wrote:
> > Except...on a peculiar ISA dual-port serial card that HP made
> > for the early HP Vectras. One D?-9S like a PC/AT serial
> > port, one DB-25S. To be fair, HP put a plastic tag out one side
> > of the slot to remind you that this was a serial port.
> Doggone it, I screwed up. The 9-pin connector is male, the 25-pin
> connector is female. So what you had sticking through the back
> plate was a 9-pin connector on top, a 25-pin connector on bottom,
> and a little plastic tag with orange print to one side of the
> 25-pin connector reminding you that this was a serial port.
> Thinking about it this morning I think I also remember an HP
> serial/parallel card with male 9-pin serial connector on top and
> 25-pin female connector on bottom...and a little plastic tag with
> black print to one side of the 25-pin connector reminding you that
> this was a parallel port.
> Good thing we didn't have many of those latter ones around in my
> shop, I was (still am, actually) in the habit of feeling out connectors
> with my fingertips to work out where the plug is supposed to go.
> How did things get this way? Well, HP was in the habit of putting
> female connectors on everything except cables and making their
> minis look sort of like modems. I once heard this referred to as
> "DTE in DCE drag" w/r/t the HP3000.

I've always preferred to use setups where the hardware had female
connectors and the cables were male, mostly because it's cheaper
and easier to repair or replace a cable when a pin breaks than a
CPU or other bit of capital equipment. But that's probably just
me -- I'm lazy, clumsy and cheap (and proud of two of those).
Ward Griffiths
They say that politics makes strange bedfellows.
Of course, the main reason they cuddle up is to screw somebody else.
				Michael Flynn, _Rogue Star_
Received on Sun May 24 1998 - 06:38:53 BST

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