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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!simtel!pravda.aa.msen.com!news1.best.com!sgigate.sgi.com!enews.sgi.com!decwrl!pa.dec.com!nntpd.lkg.dec.com!usenet From: Jon Jenkins <jenkinsj@ozy.dec.com> Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: PLEASE HELP: DEClasser printing Date: 2 Nov 1995 21:20:48 GMT Organization: Digital Equipment Corp Lines: 40 Message-ID: <47bcng$vjn@nntpd.lkg.dec.com> References: <475fcl$j5r@vixen.cso.uiuc.edu> NNTP-Posting-Host: ozyd13-p3.ozy.dec.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 1.1N (X11; I; BSD/386 uname failed) X-URL: news:475fcl$j5r@vixen.cso.uiuc.edu Hi just recently I spent quite a bit of time in the kernel lpt.c file so Im quite famailiar with it. I have a DEClaser3500 and print with no problems. I also downloaded the "current" version of the lpt.c file. Both versions work fine although code is a bit messy. Basically the driver works in interrupt mode with a 1 second garbage collection timeout for missed interrupts. The write function sleeps until all chars in buffer have been sent then returns. If you have the kernel source put a #define DEBUG at the top of the file and get some debug output after a kernel rebuild. Usually if the READY light is blinking it means the printer is receiving data and steady otherwise. Is this a graphics file or a text file ?? You could also try the lpt driver in polled mode (lptcontrol -p) to see if that helps. If it does it might either mean a problem with you port hw (no interrupts) or a problem with the version of lpt.c you are using. Is the lpd ddaemon still running (didn't die after trying to print) ?? Jon -- ---------------------------------------------------------------------- Name: Dr Jon Jenkins Location: Digital Equipment Corporation NaC Voice/Fax: 61-7-55-75-0151/100 Burnett Place, Research Park, Inet: jenkinsj@ozy.dec.com Bond University, Gold Coast Close Proximity: "HEY YOU !!!" QLD, AUSTRALIA 4229 "Daddy, what's outside the Universe?" (My 5 year old.....) -----------------------------------------------------------------------