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- Newsgroups: comp.unix.sys5.r4
- Path: sparky!uunet!cs.utexas.edu!uwm.edu!linac!att!cbnewsm!corey
- From: corey@cbnewsm.cb.att.com (william.c.brown)
- Subject: Re: RS-232 comm. in UNIX workstation
- Organization: AT&T
- Distribution: usa
- Date: Thu, 21 Jan 1993 12:57:00 GMT
- Message-ID: <1993Jan21.125700.20163@cbnewsm.cb.att.com>
- Summary: No problem!
- References: <1993Jan20.010032.4267@arizona.edu>
- Lines: 54
-
- In article <1993Jan20.010032.4267@arizona.edu>, jwkim@ece.arizona.edu (Jinwoo Kim) writes:
- > Dear Netters,
- >
- > I am trying to connect UNIX workstation with the PC using serial
- > communication cable(RS232-C). I know how to do in the PC side,
- > but don't know how to implement in the workstation side.
- >
- > My workstation is Motorola MPC (Multi Personal Computer model-200/300)
- > and OS is System V/M88. The machine has one serial comm. card (MVME714/M)
- > which has two serial ports.
- >
- > I appreciate if somebody who had some experience in RS-232
- > communication in the UNIX workstation help me.
- >
- > Thanks in advance.
- >
- >
- > Jinwoo Kim Email : jwkim@helios.ece.arizona.edu
-
-
- I was able to do this between my PC running ESIX and another PC by strapping
- the following pins.
-
-
- DOS PC ESIX PC
- 1 1
- 2-------\/------2 Cross 2 and 3 so that transmit and receive
- 3-------/\------3 work properly.
- 4 4
- 5 5
- 6 *--6
- 7---------------7 *Strap 6,8 and 20 together on the workstation
- 8 *--8 side. Use software flow control.
- 20 *--20
-
- Your best bet is to use a break-out box to determine what leads are coming
- high when the machines are connected together. Use the straps in the break-out
- box to simulate a connector. Once you have found the combination that works
- get an rs-232 "kit" from your local computer supplier and make up a connector
- that fits your needs...
-
-
-
- /* ----- */
- /* Corey Brown (WB0RXQ): 20m, 15m, 2m(146.82) 70cm(443.65) */
- /* AT&T NSD */
- /* Alpharetta, Ga 30202 */
- /* (404)750-8071 */
- /* ----------------- */
- /* att!alphlk!wcb | They're history in terms of the */
- /* attmail!wcbrown | future! (lws-91) */
- /* ----- */
-
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-