Path: utzoo!utgpu!watmath!att!dptg!rutgers!cs.utexas.edu!csd4.milw.wisc.edu!srcsip!mandrake!rogers
From: rogers@mandrake.SRC.Honeywell.COM (Brynn Rogers)
Newsgroups: comp.sys.ibm.pc
Subject: Re: DTK expansion-RS232-port pinout wanted
Message-ID: <27276@srcsip.UUCP>
Date: 7 Aug 89 16:42:14 GMT
References: <3374@copper.MDP.TEK.COM> <1601@bucket.UUCP> <27221@srcsip.UUCP>
Sender: news@src.honeywell.COM
Reply-To: rogers@src.honeywell.com (Brynn Rogers)
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Organization: Honeywell Systems & Research Center
Lines: 40


In article <1601@bucket.UUCP> leonard@bucket.UUCP (Leonard Erickson) writes:
<michaelk@copper.MDP.TEK.COM (Michael D. Kersenbrock) writes:

<<A DTK Hex I/O card, like many other cards, has room for a second 8250
<<chip and a pair of RS232 interface chips.  The manual is silent, however,
<<about the pinout of the ten-square-pin connector.  Does anyone know
<<the pinout of that connector -- like "which RS232 signals are on which pin"?

<They map directly to a "standard" 9-pin D-shell connector. The pinout of
<*that* was standardized by the AT (trans. I don't have it handy)

<But just wire them straight to a 9-pin connector and it should work. 


   Here is the pinout for my serial expansion that I got with my DTK.
The manual that came with it says it is a KW-509 made by KOUWEI electric.
This may or may not be the same as a DTK serial port, so check it out.
(of course the manual has nothing usefull in it like this pinout which
I got by ohming it out)

10-pin header    9 pin DB shell ( male )
--------------   -----------------
     1              5
     2              3
     3              2
     4              7
     5              NC 
     6              8
     7              6
     8              4
     9              9
     10             NC

Notes:  pin 1 of the 9-pin DB is not connected., it is actually chassis ground.
        pin 1 of the 10-pin header is towards the edge of the board.


 Brynn Rogers    Honeywell S&RC        rogers@src.honeywell.com
 work 612-782-7577 home 874-7737