Julian Elischer wrote:
>
> I have been trying to talk to a laserprinter but whenever I try
> cat file >/dev/lpt0
>
> the system panics
> (if the printer is online)
> Feb 12 02:36:56 jules /boot/kernel/kernel: kernel trap 9 with interrupts disable
> d
> Feb 12 02:36:56 jules /boot/kernel/kernel:
> Feb 12 02:36:56 jules /boot/kernel/kernel:
> Feb 12 02:36:56 jules /boot/kernel/kernel: Fatal trap 9: general protection faul
> t while in kernel mode
> Feb 12 02:36:56 jules /boot/kernel/kernel: instruction pointer = 0x8:0xc0252ebc
> Feb 12 02:36:56 jules /boot/kernel/kernel: stack pointer = 0x10:0
> xccca4f50
> Feb 12 02:36:56 jules /boot/kernel/kernel: frame pointer = 0x10:0
> xccca4f64
> Feb 12 02:36:56 jules /boot/kernel/kernel: code segment = base 0x0, limi
> t 0xfffff, type 0x1b
> Feb 12 02:36:56 jules /boot/kernel/kernel: = DPL 0, pres 1, def32 1, gran 1
> Feb 12 02:36:56 jules /boot/kernel/kernel: processor eflags = resume, IOPL =
> 0
> Feb 12 02:36:56 jules /boot/kernel/kernel: current process = 288 (i
> rq7: lpt0)
>
> it seems to be in the fork trampoline code when it crashes.
>
> This was with kernels from Feb 1 and Feb 6.
>
>
following up to myself:
the dmesg shows:
ppc0: <ECP parallel printer port> at port 0x378-0x37f,0x778-0x77f irq 7 drq 3 on
isa0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/7 bytes threshold
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
and the config has;
# parallel port
device ppc
device ppbus
device lpt
The hints have no entry..
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