🚀 go-pugleaf

My parallel port has stopped working!  It used to work.  The only
thing which has changed is that I installed a Dlink DE-220 ethernet
card.  The problem's not the kernel, because the unpatched kernel I
used previously doesn't work now either.  It's not a hardware problem,
because the parallel port works okay if I boot the PC under Windows
95.

My first thought was that it was an IRQ or memory address conflict.
However I've tried the ethernet card under two different IRQs (9 and
11) and three different base addresses (0x280, 0x300 and 0x340) and it
makes no difference (except when I tried IRQ 3 it disabled the serial
port as well.)

My PC is a Pentium 120 running Redhat 4.1, kernel 2.0.27 with
ne2k-pci-diff patch.  The current IRQs and addresses are:

$ cat /proc/interrupts
 0:      15164   timer
 1:        303   keyboard
 2:          0   cascade
 4:        786 + serial
 5:          1   sound blaster
 9:          1   NE2000
13:          1   math error
14:      29540 + ide0
15:          0 + ide1

$ cat /proc/ioports
0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : keyboard
0080-009f : dma page reg
00a0-00bf : pic2
00c0-00df : dma2
00f0-00ff : npu
0170-0177 : ide1
01f0-01f7 : ide0
0220-022f : sound blaster
0280-029f : NE2000
02f8-02ff : serial(set)
0376-0376 : ide1
03c0-03df : vga+
03f0-03f5 : floppy
03f6-03f6 : ide0
03f7-03f7 : floppy DIR
03f8-03ff : serial(auto)

(The DE-220 card appears as NE2000.)

From the Windows settings, I expect the parallel port to appear at
addresses 0378-037a, but it's not detected.  There's no relevant
message in dmesg, but there never was even when it was working.

Any suggestions, please?  If possible please reply to the email
address below as well as to this group.


Thank you


Rod Tye
rdtye@iee.org