From: rivers@ponds.uucp (Thomas David Rivers)
Subject: Re: New kernel on rachel.ibmpcug.co.uk
Date: Wed, 23 Dec 1992 03:43:26 GMT


Well, enough requests, etc... have been posted recently to warrant
(at least in my opinion) a repost of this driver.

I have been successfully using it for some time now with my
HP Laserjet clone (an Epson Action Laser II).  I've had no lost
char's etc... - it works well with graphics (ghostscript output
and HP stuff from Windows) and text.

Also, it doesn't seem to put any unreasonable load on my system.

I don't know anything about the internals, except that installation
wasn't straightforward (you have to muck around in config.c yourself.)
If you have any questions, I suggest contacting the original author(s)
(see below.)

Finally, we need to provide a *fixed* major # for the printer - I'm
getting tired of moving it around for every new driver that comes up...

Currently mine is set to 16.

    - Dave Rivers -
    (rivers@ponds.uucp)

------------- cut here ----------------------------

>From: wolf@dentaro.GUN.de (Wolfgang Stanglmeier)
Newsgroups: comp.unix.bsd
Subject: replacement for lpt.c without interrupts
Date: 6 Sep 92 14:37:03 GMT
Organization: Colognists, Germany

I hacked the 386bsd LPT-driver to work without interrupts.
The busy loop timeout value adapts automatically to
the printer and system speed.

It should be a full replacement for the standard driver.

This driver keeps my printer busy without slowing down the system.
[I remember the 90% system time when printing hppcl graphic files
 with the ix/386 lpt-driver WITH interrupts]

The driver supports up to 4 printers.
The minor number is interpreted as follows:

	D D P E - - # #

DD:	Debug,	00: no
		01: statistical data when closing device
		10: statistical data for every write call
		11: lots of silly data

P:	Prime on open.

E:	Errormessage.
		Logs "no paper", "offline", "printer error" conditions
		to the console.

##:	Device,	0: lpt0
		1: lpt1
		2: lpt2		(on display adapter)

This driver uses the ideas of Piercarlo Grandis polling printer driver.

----------------------------------------------------------------------

>From: ajv@xhost92.csd.mot.com
Newsgroups: comp.unix.bsd
Subject: Re: replacement for lpt.c without interrupts
Date: 9 Sep 92 06:00:18 GMT

wolf@dentaro.GUN.de (Wolfgang Stanglmeier) writes:

>I hacked the 386bsd LPT-driver to work without interrupts.
>The busy loop timeout value adapts automatically to
>the printer and system speed.

<excellent driver follows...>

I was working on something very much along the same lines.  However,
Mr. Stanglmeier hit the nail right on the head first.  I have rolled
in some of my other work on handling syscall restarts, and in the
process applied my BSD-kernel style of indentation.  What follows is
substantially the same driver, with my own minor improvements.

Kudos, Mr. Stanglmeier!  My printer thanks you. :-)

					Andy Valencia
					ajv@csd.mot.com (for now)
					jtk@netcom.com (if it bounces)

-----------------------------------------------------------------------

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end

-- 
+------------------------+---------------------------+
| Gary Ward              |  Amdahl Corporation       |
| gpw10@cd.amdahl.com    |  1250 East Arques Avenue  |
| Phone : (408)746-8865  |  P.O. Box 3470 M/S 142    |
|                        |  Sunnyvale, CA 94088-3470 | 
+------------------------+---------------------------+


>From mozart.unx.sas.com!sas!concert!gatech!darwin.sura.net!Sirius.dfn.de!news.uni-stuttgart.de!news.uni-stuttgart.de!nils Wed Oct  7 09:39:25 EDT 1992
Article: 6775 of comp.unix.bsd
Newsgroups: comp.unix.bsd