Parallel port on 712/60

Hello.

I'm trying to set up an HP 712/60 as a print server for a LaserJet
attached via the parallel port. I had this setup working with HP-UX
11.00 on the same machine, but under OpenBSD it appears that the
parallel port is not functioning. Redirecting output to /dev/lpt0 does
nothing; no error message is produced and nothing is output by the
printer. Attempting to print jobs using lpd returns ENODEV according to
ktrace:

  2359 lpd      CALL  write(0x6,0x78009720,0x400)
  2359 lpd      RET   write -1 errno 19 Operation not supported by
device

This is using /dev/lpt0. Trying to use /dev/lpa0 returns "device not
configured" for output redirection; lpd jobs for lpa0 sit in the queue
indefinitely.

Is the parallel port simply not supported on hppa, as on sparc, or is
there something wrong with my configuration?

printcap entry:

lj|HP LaserJet 5P:\
        :lp=/dev/lpt0:sd=/var/spool/output/lj:lf=/var/log/lpd-errs:

ls -l /dev/lp*:

crw-------  1 root  wheel   30, 128 Jun 14 23:03 /dev/lpa0
crw-------  1 root  wheel   30, 129 Jun 12 12:41 /dev/lpa1
crw-------  1 root  wheel   30, 130 Jun 12 12:41 /dev/lpa2
crw-------  1 root  wheel   30,   0 Jun 14 23:03 /dev/lpt0
crw-------  1 root  wheel   30,   1 Jun 12 14:43 /dev/lpt1
crw-------  1 root  wheel   30,   2 Jun 12 14:44 /dev/lpt2

dmesg:

[ using 234380 bytes of bsd ELF symbol table ]
Copyright (c) 1982, 1986, 1989, 1991, 1993
	The Regents of the University of California.  All rights reserved.
Copyright (c) 1995-2005 OpenBSD. All rights reserved.  http://www.OpenBSD.org

OpenBSD 3.7 (GENERIC) #242: Sun Mar 20 13:29:01 MST 2005
    [email protected]:/usr/src/sys/arch/hppa/compile/GENERIC
HP 9000/712/60 (Gecko) PA-RISC 1.1f
real mem = 134217728 (524288 reserved for PROM, 6012928 used by OpenBSD)
avail mem = 110968832
using 8421 buffers containing 13393920 bytes of memory
mainbus0 (root) [flex fff80000]
pdc0 at mainbus0
power0 at mainbus0: DR25
mem0 at mainbus0 offset ffbf000: viper rev 0, size 128MB
cpu0 at mainbus0 offset ffbe000 irq 31: PCXL L1-A 60MHz, FPU PCXL (CMOS-26B) rev 1
cpu0: 32K(32b/l) Icache, 32K(32b/l) wr-back Dcache, 120 coherent TLB, 8 BTLB
lasi0 at mainbus0 offset 100000 irq 28: rev 3.0
gsc0 at lasi0
gsckbc0 at gsc0 offset 8100 irq 26
gsckbc1 at gsc0 offset 8000 irq 26
"floppy controller" at gsc0 (type a sv 83 mod 1 hv 60) offset a000 not configured
harmony0 at gsc0 offset 4000 irq 13: rev 18
audio0 at harmony0
lpt0 at gsc0 offset 2000 irq 7
com0 at gsc0 offset 5000 irq 5: ns16550a, 16 byte fifo
com0: console
ie0 at gsc0 offset 7000 irq 8: LASI/i82596CA v1.0, address 08:00:09:3c:0d:9a
osiop0 at gsc0 offset 6000 irq 9: NCR53C710 rev 2, 40MHz, SCSI ID 7
scsibus0 at osiop0: 8 targets
osiop0: target 0 now using 8 bit 10 MHz 8 REQ/ACK offset xfers
sd0 at scsibus0 targ 0 lun 0: <QUANTUM, FIREBALL ST2100S, 0F0D> SCSI2 0/direct fixed
sd0: 2051MB, 7068 cyl, 3 head, 198 sec, 512 bytes/sec, 4201304 sec total
osiop0: target 2 rejected sync request
osiop0: target 2 now using 8 bit asynch xfers
ss0 at scsibus0 targ 2 lun 0: <AGFA, SnapScan, 1.10> SCSI2 6/scanner fixed
ss0: generic scanner
sti0 at mainbus0 offset 8000000 irq 11: HPA208LC1024 rev 8.04;7, ID 0x2B4DED6D40A00499
sti0: 2048x1024 frame buffer, 1024x768x8 display, offset 0x0
sti0: 8x16 font type 1, 16 bpc, charset 0-255
biomask 0x7 netmask 0xf ttymask 0x3f
boot path: 2/0/1.0 class=1 flags=c0<autoboot,autosearch> hpa=0xf0106000 spa=0x0 io=0x84ec
root on sd0a swap on sd0b
wsdisplay0 at sti0
wsdisplay0: screen 0 added (default, vt100 emulation)
rootdev=0x400 rrootdev=0xa00 rawdev=0xa02