Datasheet

“main” (Installation and Administration) — 2004/6/25 — 13:29 — page 311 — #337

Printer Operation

13.7.3 Parallel Ports

Note

Parallel ports exist on PC-like platforms only.

Note

The safest approach is to connect the printer directly to the ﬁrst parallel

port and to select the following parallel port settings in the BIOS:

I/O address: 378 (hexadecimal)

Interrupt: irrelevant

Mode: Normal, SPP, or Output Only

DMA: disabled

If the printer cannot be addressed on the parallel port despite these set-

tings, enter the I/O address explicitly in accordance with the setting in the

BIOS in the form 0x378 in /etc/modprobe.conf. If there are two paral-

lel ports that are set to the I/O addresses 378 and 278 (hexadecimal), enter

these in the form 0x378,0x278.

If the interrupt 7 is still free, it can be activated with the entry shown

in Example 13.1. Before activating the interrupt mode, check the ﬁle

/proc/interrupts to see which interrupts are already in use. Only the

interrupts currently being used are displayed. This may change depend-

ing on which hardware components are active. The interrupt for the paral-

lel port must not be used by any other device. If you are not sure, use the

polling mode with irq=none.

Example 13.1: /etc/modprobe.conf: Interrupt Mode for the First Parallel Port

alias parport_lowlevel parport_pc

options parport_pc io=0x378 irq=7

13.7.4 Troubleshooting Network Printers

Identifying Network Problems Connect the printer directly to the com-

puter. For test purposes, conﬁgure the printer as a local printer. If this

works, the problems are related to the network.

311SUSE LINUX Enterprise Server