Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!thunder.mcrcim.mcgill.edu!snorkelwacker.mit.edu!usc!wuarchive!uunet!mcsun!hp4nl!svin02!eba!ebr!wjw From: wjw@ebr.eb.ele.tue.nl (Willem Jan Withagen) Newsgroups: comp.sys.apollo Subject: Re: Problems with serial drivers (and postscript printer) Keywords: Printing, serial port, bugs. Message-ID: <1050@eba.eb.ele.tue.nl> Date: 24 Jan 91 16:57:35 GMT References: Sender: news@eb.ele.tue.nl (The News system) Organization: Eindhoven University of Technology, The Netherlands Lines: 38 In article admin@cs.exeter.ac.uk (System Administrator) writes: >[ I am sorry if you have seen a similar article - the previous posting >had the wrong address so I have sent a cancel message and reposted >this ] > >We are experiencing some problems with the apollo (domain OS 10.2 bsd) >serial port whilst attempting to drive a postscript laser printer. [deleted stuff about ^d] >We believe at this point that there is a bug in serial driver in that >there seems to be no way to turn this echoing off. > >According to our understanding if the "stty ctlecho" is set then when >we do a Ctrl-d the terminal driver quite correctly first displays ^D >and then immediatly sends 2 backspace's and spaces before terminating >the shell (or subshell). If on the other hand the "stty -ctlecho" is >set then on sending a ^D the shell correclty does not put it on screen >so there is no need to send the two backspace's but the terminal >driver still does. Well there's always the diffence between using stty and /com/tctl. You can get the system as far as raw with stty and then you ask for the tctl settings and there still not raw :{. Furthermore is the still a bug in the SR10.2 serial driver. I was able to generate a rather small file which will print eronously on a serial port on an SR10.2 system. My support rep tells me that it is fixed in SR10.3, so there is further fix to the serial driver for sr10.2. [ this is already after installation of the patch for the sio-driver ] Ciao, Willem jan Withagen Eindhoven University of Technology DomainName: wjw@eb.ele.tue.nl Digital Systems Group, Room EH 10.10 BITNET: ELEBWJ@HEITUE5.BITNET P.O. 513 Tel: +31-40-473401 5600 MB Eindhoven The Netherlands