Subject: LPT0 causing RESET?
To: None <current-users@sun-lamp.cs.berkeley.edu>
From: Andrew Cagney <cagney@highland.oz.au>
List: current-users
Date: 08/28/1994 18:15:41
Hi,

I'm trying to get a printer to correctly work on an x86 computer's
parallel port.  To test it I was using:

	# cp post-script-file /dev/lpt0

Depending on how the remote printer is configured, the computer would
reset (no core dump and no panic message).

		Is this normal?
				Andrew


More info ....

Printer:
	Lexmark 4039 10R
	Config:
		Parallel Protocol/Honor Init: STANDARD/ON
			RESET
		Parallel Protocol/Honor Init: STANDARD/OFF
			RESET
		Parallel Protocol/Honor Init: FASTBYTES/ON
			cp: /dev/lpt0: Operation not permitted
		Parallel Protocol/Honor Init: FASTBYTES/OFF
			Prints ok!

LPT Card:
	GMIO-470 (An all singing all dancing video+fd+com+lpt+isa + .... )

Dmesg output:

	NetBSD 1.0_BETA (GENERICAHA) #3: Mon Aug  1 16:48:16 PDT 1994
	    cgd@sun-lamp.cs.berkeley.edu:/usr/src/sys/arch/i386/compile/GENERICAHA
	CPU: i486DX (486-class CPU)
	real mem  = 16384000
	avail mem = 14352384
	using 225 buffers containing 921600 bytes of memory
	pc0 at isa0 port 0x60-0x6f irq 1: color
	com0 at isa0 port 0x3f8-0x3ff irq 4: ns82450 or ns16450, no fifo
	com1 at isa0 port 0x2f8-0x2ff irq 3: ns82450 or ns16450, no fifo
	lpt0 at isa0 port 0x378-0x37f irq 7
	fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
	fd0 at fdc0 drive 0: 1.2MB 80 cyl, 2 head, 15 sec
	fd1 at fdc0 drive 1: 1.44MB 80 cyl, 2 head, 18 sec
	aha0 at isa0 port 0x330-0x333 irq 11 drq 5
	scsibus0 at aha0
	aha0 targ 0 lun 0: <SEAGATE ST3655N         9550> SCSI2 direct fixed
	sd0 at scsibus0: 520MB, 2493 cyl, 5 head, 85 sec, 512 bytes/sec
	ed2 at isa0 port 0x300-0x31f irq 10: address 00:40:c7:21:b2:f2, type
NE2000 (16-bit)
	ie0: unknown AT&T board type code 0
	ie0: can't map 3C507 RAM in high memory
	npx0 at isa0 port 0xf0-0xff: using exception 16
	biomask 840 netmask 41a ttymask 1a
	changing root device to sd0a


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