jeff@theory.tn.cornell.edu (Jeff Miller) (11/15/90)
Here is my problem: I am trying to control a digital disk recorder remotely by sending it commands through its RS232 port. I want to use a Tektronix 4301 computer which is using a Tektronix modified version of 4.2 BSD to send the control messeges. Using a VT340 terminal I have sent commands to the recorder through the RS232 successfully, using 8 bit, even parity mode. However, the Tektronix is sending out 7 bit bytes. I have been researching ioctl commands to change the port to sending 8 bits, but have not had any luck. The port I am trying to use will be exclusively for interfacing with the recorder, so I can modify anything about it. I am looking for any advice as to how I can change this port to 8 bits, whether in unix shells, changing device characteristics, or C programms. Please e-mail responses to jeff@theory.tn.cornell.edu. Thanks.
s872007@otto.bf.rmit.oz.au (David Burren [Athos]) (11/15/90)
In <1990Nov14.214019.25745@batcomputer.tn.cornell.edu> jeff@theory.tn.cornell.edu (Jeff Miller) writes: >Using a VT340 terminal I have sent commands to the recorder >through the RS232 successfully, using 8 bit, even parity mode. However, >the Tektronix is sending out 7 bit bytes. I have been researching ioctl >commands to change the port to sending 8 bits, but have not had any luck. >Please e-mail responses to jeff@theory.tn.cornell.edu. Thanks. I'd be interested to see any responses summarized to the net, as I've recently hit the same problem. Some Motorola radio equipment I have to interface to uses 8 data bits and even parity, and I could not convince my Sony 1750 to talk to it. In the system installation the Motorola equipment will be connected via a Xylogics Annex, and I've managed to get the Annex to talk 8E1, so my problem is solved for now. But as far as I could see there was no way to get the Sony (it's Unix is what I'd call a Sony port of 4.3BSD-Tahoe) to talk 8E1. 8N1 or 7E1 yes, 8E1 no. _______________________________________________________________________ David Burren (Wookie Athos) Work: david@bacchus.esa.oz.au Software Development Engineer Home: athos%eyrie@labtam.oz.au Expert Solutions Australia School: s872007@otto.rmit.oz.au