I would like to think I am getting closer.
I just found a combination by which
parport can register the irq that is set
in /etc/conf.modules
insmod parport; insmod parport_probe
will result in this in /var/log/messages:
Jul 7 16:30:38 net kernel: parport0: PC-style at 0x278, irq 6 [SPP,PS2]
Jul 7 16:30:39 net kernel: parport0: no IEEE-1284 device present.
cat /proc/parport/0/hardware gives:
base: 0x278
irq: 6
dma: none
modes: SPP,PS2
I was optimistic, but insmod trakker gives:
insmod trakker
/lib/modules/2.2.9/misc/trakker.o: init_module: Device or resource busy
in the case of irq = 6 or irq = 7 .
cat /proc/interrupts gives this:
CPU0
0: 27269 XT-PIC timer
1: 2 XT-PIC keyboard
2: 0 XT-PIC cascade
8: 1 XT-PIC rtc
10: 804 XT-PIC eth0
12: 0 XT-PIC PS/2 Mouse
13: 1 XT-PIC fpu
14: 27530 XT-PIC ide0
15: 5 XT-PIC ide1
NMI: 0
/var/log/messages gives:
Jul 7 16:40:21 net kernel: [002] fdc-io.c (fdc_register_R7d7204fe) -
Probing
for trakker tape drive slot 0.
Jul 7 16:40:21 net kernel: [003] 0 fdc-parport.h (ft_parport_probe) -
dev: c38
6e710.
Jul 7 16:40:21 net kernel: [004] 0 fdc-parport.h (ft_parport_probe) -
irq: 7.
Jul 7 16:40:21 net kernel: [005] 0 fdc-parport.h (ft_parport_probe) -
port: 27
8.
Jul 7 16:40:21 net kernel: [006] 0 trakker.c (trakker_checksum) -
checksum e
rror (off by eb).
Jul 7 16:40:21 net kernel: [007] 0 trakker.c (trakker_checksum) -
checksum e
rror (off by eb).
Jul 7 16:40:21 net kernel: [008] 0 fdc-parport.h (ft_parport_probe) -
can't fi
nd parport interface for ftape id 0.
Jul 7 16:40:21 net kernel: [009] 0 trakker.c (trakker_detect) - can't
find trak
ker interface for ftape id 0.
Jul 7 16:40:21 net kernel: [010] 0 trakker.c (trakker_detect) -
ft_parport_prob
e(fdc, &trakker->parinfo) failed: -6.
Jul 7 16:40:21 net kernel: [011] fdc-io.c (fdc_register_R7d7204fe) -
Probing
for trakker tape drive slot 1.
[and other similar stuff]
