home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.unix.dos-under-unix
- Path: sparky!uunet!ukma!usenet.ins.cwru.edu!icd.ab.com!tinman.mke.ab.com!pingel
- From: pingel@tinman (Bob Pingel (4439))
- Subject: Serial Comms under SunPC 3.0
- Message-ID: <1992Nov9.174626.24487@tinman.mke.ab.com>
- Sender: usenet@tinman.mke.ab.com (NetNews server account)
- Nntp-Posting-Host: 130.151.83.153
- Organization: Allen-Bradley Co.
- X-Newsreader: Tin 1.1 PL5
- Date: Mon, 9 Nov 1992 17:46:26 GMT
- Lines: 29
-
- I am attempting to do serial comms under SunPC 3.0. I am having difficulties
- with the control lines.
-
- When I send out a packet I set RTS and clear DTR. Upon receiving a
- transmit shift register empty (TSRE) I set DTR and clear RTS so that I can
- receive again. The last switch of the control lines takes up to 4 seconds.
- Because of the time lag the device on the other end of the link has to wait
- a while before it can send.
-
- This same code works fine on a regular PC. My comms driver is written
- in assembly and I am diddling directly with the "UART" (no BIOS interface).
-
- Any clues????
-
- Bob Pingel
-
-
- --
- ____________________________________________________________________________
- ___
- Robert M. Pingel (414) 382-4439 /\ | \
- Electronic Operator Interface Development / \ | |
- Allen-Bradley Company - Milwaukee /____\ _____ |----\
- 1201 South Second Street / \ | |
- Milwaukee, Wisconsin 53201 / \ |____/
- A Rockwell International Company
- Internet: pingel@oieng.mke.ab.com
- MS Mail: abmke/oil/pingel
-
-