"DB9" - test-drb@ccmp.vtda.org

15 Dec 1999

please see embedded comments below.

Dick

-----Original Message-----
From: Fred Cisin (XenoSoft) &lt;cisin(a)xenosoft.com&gt;
To: Discussion re-collecting of classic computers
&lt;classiccmp(a)u.washington.edu&gt;
Date: Wednesday, December 15, 1999 2:33 PM
Subject: "DB9"

...
 On Wed, 15 Dec 1999, Tony Duell wrote:
  Thank %deity there's somebody else out there
who actually knows what a
 'DB' connector is!. I sometimes think I'm fighting a losing battle
 against the people who insist there's a DB9 :-) 
How large would the pins be, or how far apart if there WERE a DB9?
Or what about a DB25 serial port cable that only has pins 1-8 and 20?
Could we call THAT a DB9? :-)
 I once had a Mistubishi monitor which used a 'B'-shell with three coax
connectors in it along with eight or nine signals on what looked to be
otherwise standard pins.  Just yesterday I discarded a badly damaged
'C'-shell with 78 pins in three rows.  I don't think that connector will
become popular due to its fragility, at least I hope not!
...

>
> For reference, the standard connectors seem to be, with common uses :
>
> DA15 (PC joystick), MAU ethernet, etc
> DA26 (Never seen it used)
>
> DB25 (Standard RS232, PC printer port)
> DB44 (Never seen it used)
>
> DC37 (PC external floppy disk, Canon CX-VDO interface)
> DC62 (IBM PC expansion cabinet)
>
> DD50 (Sun SCSI)
> The make these with four rows, more densely spaced, but I don't know the
max
pin count
...

 DE9 (PC/AT serial port, Atari joystick, etc)
 DE15 (VGA monitor)

 I've seen the 19 and 23 pin connectors used by Apple, Atari and Commodore
 Amiga refered to as the DF19 and DG23. It makes sense, but I have no idea
 if that's official.

 -tony 