Index of /atarilibrary/atari_cd04/B_SYSTEM/LPDEV

 Name                    Last modified       Size  Description

 Parent Directory        11-May-2007 21:05      -  
 ATARIERR.H              06-Jun-1993 10:53     2k  
 CENTR.S                 27-Jul-1993 10:13     1k  
 COPYING                 13-Jul-1993 04:49    12k  
 FILESYS.H               15-Oct-1992 17:38    15k  
 LPDEV.8                 25-Jul-1993 06:10     2k  
 LPDEV.ASC               23-Aug-1993 16:19     3k  
 LPDEV.C                 23-Aug-1993 16:20     9k  
 LPDEV.H                 03-Aug-1993 06:25     2k  
 LPDEV.TTP               23-Aug-1993 16:26     5k  
 LPFLUSH.1               25-Jul-1993 08:14     1k  
 LPFLUSH.ASC             23-Aug-1993 16:19     1k  
 LPFLUSH.C               03-Aug-1993 06:16     1k  
 LPFLUSH.TTP             23-Aug-1993 16:27     2k  
 MAKEFILE                24-Aug-1993 07:46     2k  

Dear MiNT-users,

here is an installable device driver for the Centronics port.  Just
execute the program "lpdev.ttp" (better yet, put it in you mint.cnf
file) and it will install the /dev/lp device. 

This driver is interrupt-driven (there are no busy loops) and therefore
shouldn't hog the processor too much.  Top reveals that the command

	cat file > /dev/lp

takes less than 1% of CPU time (when other tasks are running, of
course).  The command "cp file /dev/lp" would be less efficient, because
cp copies one byte at a time, while cat copies large chunks of data.

The device uses a 24-kbyte circular buffer.  This can be modified by
altering the BUFSIZE variable in lpdev.c.  Please choose an even size,
otherwise the bit-copies won't be word-aligned and it will be much
slower. 

I have also included a small utility called "lpflush.ttp" to clear the
/dev/lp queue, so everything should be ready for use. Read the man pages
for more information.

Enjoy,

    Thierry Bousch

    Fidonet:	Thierry Bousch @ 2:320/100.9
    Internet:	bousch@suntopo.matups.fr