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- Newsgroups: comp.sys.cbm
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- From: MICHAEL AURELIO <MICHAEL.AURELIO@eastside.igate.net>
- Date: Thu, 08 Feb 96 17:49:00 -0600
- Subject: 25 pin serial
- Message-ID: <2950648817@f0.n4.z97.ftn>
- Organization: eastside.igate.net
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- In a note to all Jim Brain Asked:
-
- JB>The schematics in the FAQ for RS-232 interfaces show the TXD line as 2 and R
- JB>line as 3 for 25 pin RS-232, and switched for 9 pin RS232. I thought that p
- JB>2 and 3 had the same signal in both the 9 pin and 25 pin RS-232 spec. Can
- JB>someone quickly verify for me. I have verified that the 9 PIN version is:
-
- JB>2 TXD
- JB>3 RXD
-
- JB>But do not have a 25 pin reference handy....
- ~~~~~~~~~~~~~~~~
- A 25 pin diagram for a standard rs232 interface shows this:
-
- Pin Description Direction
- ~~~ ~~~~~~~~~~~ ~~~~~~~~~
- 2 TXD To the Modem
- 3 RXD From the modem
-
- Michael.Aurelio@eastside.igate.net
-
-