3 Apr
2003
3 Apr
'03
4:52 p.m.
Which is why i keep an old db25,ibm, 8 bit, single
port "asynchronus serial communications adaptor"
(serial port) card around.
if you rotate one of the dip jumper packs 90 deg, it
goes from async to current loop.
try that with a multifunction card (hehe)
the pins for current loop are different then the async
pins.
great for testing out teletypes or old ham gear ;)
the other jumper pack sets com 1 or 2
Bill
Message: 5
Date: Wed, 02 Apr 2003 20:51:28
To: cctalk(a)classiccmp.org
From: Joe <rigdonj(a)cfl.rr.com>
Subject: Re: IBM 5161
Reply-To: cctech(a)classiccmp.org
At 06:35 PM 4/2/03 -0700, you wrote:
floppy,
game port
BEEP! Nope.
Joe
--__--__--
Fred Cisin (XenoSoft) wrote:
>>>incompatible, and they had a giant surplus of
serial (RS232 and
current
>>>loop) cards that nobody wanted, so they
provided a
"FREE" serial
card to
>>>
>>>
>
>On Thu, 3 Apr 2003, Tony Duell wrote:
>
>
>>Why did 'mobody' want them? A serial port is a very
useful thing to
have...
>>
>>
>
>Because they occupied an entire slot (out of 5 on
the PC), and other
>companies sold "multifunction" cards that
could use
the same slot for
>serial, parallel, clock, and memory. Most of those
were marketed as
SIX
>functions - how many people remember what the other
two functions
were?