Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!ukc!edcastle!cs.ed.ac.uk!cs.edinburgh.ac.uk!ajcd From: ajcd@cs.edinburgh.ac.uk (Angus Duggan) Newsgroups: comp.sys.hp Subject: Serial Line drivers on HP9000/375 Keywords: LaserJet RS232 Transcript Message-ID: <1133@skye.cs.ed.ac.uk> Date: 30 Oct 90 13:00:29 GMT Sender: nnews@cs.ed.ac.uk Reply-To: ajcd@cs.edinburgh.ac.uk (Angus Duggan) Followup-To: comp.sys.hp Organization: Edinburgh University Fried Brain Carry-out Lines: 32 We are having problems interfacing an HP LaserJet IID printer with an HP PostScript cartridge to an HP9000/375 workstation, via the RS232 port on the workstation. The symptoms of the problem are that characters transmitted back to the workstation are occasionally lost. We've put the printer on a very short cable to check that it isn't cable length problems, to no effect. We've also put a serial line protocol analyser on the line to check that the printer is transmitting the characters, and that the xon/xoff flow control is working (which it is). I have been using the HP-supplied kermit to communicate with the printer. The stty options on the printer line are: speed 19200 baud; line = 0; susp ; dsusp intr = DEL; quit = ^\; erase = #; kill = @; swtch = ^@ eof = ^D; eol = ^@; min = 4; time = 0; stop = ^S; start = ^Q -parenb -parodd cs8 -cstopb -hupcl cread -clocal -loblk crts ignbrk -brkint ignpar -parmrk -inpck -istrip -inlcr -igncr -icrnl -iuclc ixon -ixany ixoff -ienqak -isig -icanon iexten -xcase -echo -echoe -echok -echonl -noflsh -opost -olcuc onlcr -ocrnl -onocr -onlret -ofill -ofdel -tostop Incidentally, does anyone know if HP support Transcript (for BSD spooler architecture---we're going to be using PLP) on HPUX? Any information or suggestions gratefully received. Thanks in advance, Angus == Angus Duggan, Department of Computer Science, | I'm pink, therefore I'm Spam. University of Edinburgh, JCMB, | JANET: ajcd@uk.ac.ed.lfcs The King's Buildings, Mayfield Road, | VOICE: (UK) 031 650 5126 Edinburgh, EH9 3JZ, Scotland. | OR: ajcd%lfcs.ed.ac.uk@nsfnet-relay.ac.uk