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- Newsgroups: comp.sys.amiga.datacomm
- Path: sparky!uunet!panther!mothost!white!rtsg.mot.com!king
- From: king@rtsg.mot.com (Steven King, Software Archaeologist)
- Subject: Re: NULL Modem - IBM <> Amiga
- Message-ID: <1992Nov16.221551.17892@rtsg.mot.com>
- Sender: news@rtsg.mot.com
- Nntp-Posting-Host: orchid3
- Reply-To: king@rtsg.mot.com
- Organization: Motorola Inc., Cellular Infrastructure Group
- References: <1*-1Hkfdxa@atlantis.psu.edu> <69601@cup.portal.com>
- Date: Mon, 16 Nov 1992 22:15:51 GMT
- Lines: 34
-
- John_Mark_Newton@cup.portal.com publicly declared:
- >I am very interested in a null-modem cable from Amiga to PC. Please post
- >anything you learn. I would hate to blow up my boss's PC!
-
- Here's the connection diagram for a null modem adaptor. It assumes
- both sides are DB-25. I don't know the pinouts for the DB-9 connector
- used on some (most? all?) PCs these days.
-
- Before you build this, ask yourself "Is it really worth my effort to
- save the measily $7 these things cost at Radio Shack?"
-
-
- TXD ( 2) ---------\ /--------- TXD ( 2) Transmit Data (output)
- X
- RXD ( 3) ---------/ \--------- RXD ( 3) Received Data (input)
-
- RTS ( 4) ---------\ /--------- RTS ( 4) Request to Send (output)
- X
- CTS ( 5) ---------/ \--------- CTS ( 5) Clear to send (input)
-
- DCD ( 8) ---+ +--- DCD ( 8) Carrier Detect (input)
- | |
- DSR ( 6) ---+-----\ /-----+--- DSR ( 6) Data Set Ready (input)
- X
- DTR (20) ---------/ \--------- DTR (20) Terminal Ready (output)
-
- GND ( 7) --------------------- GND ( 7) Signal Ground
-
-
- --
- -------------------------------------------------------+-----------------------
- Member of EAGA: | Steven King
- Engineers Against Gratuitous Acronyms | Motorola Cellular
- | king@rtsg.mot.com
-