[svlug] parport & the parallel port

[Eric Pretorious]

I'm stumped. I can't seem to configure parport to detect my parallel port 
though /proc/sys/dev/parport/parport0/autoprobe correctly identifies my 
printer. Any thoughts?

Eric P.

I've configured the BIOS (Award BIOS on a BP-6) :
  I/O                          0x3bc
  IRQ                        7
  PORT MODE       ECP+EPP
  ECP DMA Mode  3
  DPP Mode            1.7

I've compiled the kernel (v. 2.4.1):
  Y  Parallel port support
  Y  PC-Style hardware
  Y    Use FIFO/DMA if available
  Y  IEEE 1284 transfer mode

and, I've appended the lilo.conf (per the 
/usr/src/linux/Documentation/partport.txt):
  append = "parport=auto"

...but still receive the message "No such device" if I direct output to 
/dev/lp0.

/var/log/messages contains the following:
1. *without* the kernel command line in lilo.conf:
      parport0: PC-style at 0x3bc (px7bc)  FIFO[PCSPP,TRISTATE,COMPAT,ECP]
      parport0: irq 7 detected
      parport0: legacy device

2. *with* the kernel command line in lilo.conf (append = "parport=auto"):
      Kernel command line: auto BOOT_IMAGE=2.4.1c ro root=2108 
BOOT_FILE=/boot/vmlinuz-2.4.1c parport=auto
      parport0: PC-style at 0x3bc (px7bc), irq7 usring 
FIFO[PCSPP,TRISTATE,COMPAT,ECP]
      parport0: legacy device

In both instances, /proc/sys/dev/parport/parport0/ contains the following:
autoprobe
========
MODEL: HP;
MANUFACTURER: hewlett-packard;
COMMAND SET:HP;

autoprobeN    # N = 1,2,3
=========
<all other autoprobe values were null>

base-addr
========
956   1980

devices/active
======/====
none

dma
===
-1

irq
===
-1

modes
=====
PCSPP,TRISTATE,COMPAT,ECP

spintime
=======
500

The device files' major and minor numbers all seem correct:
/dev/lp0    6,   0
/dev/lp1    6,   1
/dev/lp2    6,   2

...and the /proc/ioports are in-line:
03bc-03be:  parport0
07bc-07be:  parport0


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