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Update lpt(4) man page to reflect recent changes to the lpt device driver.

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(also point out that lpa is now defunct.)
This commit is contained in:
Geoff Rehmet 1994-04-06 20:21:33 +00:00
parent 5ff4ee289a
commit bc3919a9be
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=1341
1 changed files with 21 additions and 7 deletions
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share/man/man4/man4.i386/lpt.4
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@ -37,23 +37,37 @@
.Nd
Parallel port driver
.Sh SYNOPSIS
For interrupt-driven ports:
.Cd "device lpt0 at isa? port" \&"IO_LPT1\&" tty irq 7 vector lptintr
.Cd "device lpt1 at isa? port" \&"IO_LPT2\&" tty irq 7 vector lptintr
.Cd "device lpt2 at isa? port" \&"IO_LPT3\&" tty irq 7 vector lptintr
.sp
For BIOS-probed ports:
.Cd "device lpt0 at isa? port? tty irq 7 vector lptintr"
.sp
For polled ports:
.Cd "device lpt0 at isa? port? tty"
.Cd "device lpt1 at isa? port" \&"IO_LPT2\&" tty
.Sh DESCRIPTION
This driver provides access to parallel ports. It assumes that
the parallel port controller interrupts the CPU properly. If
this is not the case, the
.Nm lpa
driver should be used instead.
This driver provides access to parallel ports.
.sp
The driver can be configured either to be either interrupt-driven, or
to poll the printer. Ports that are configured to be
interrupt-driven can be switched to polled mode by using the
.Xr lptcontrol 1
command.
.sp
This driver replaces the functionality of the
.Xr lpa 4
driver, which is now defunct.
.Sh FILES
.Bl -tag -width Pa -compact
.It Pa /dev/lpt0
first parallel port driver
.El
.Sh SEE ALSO
.Xr lpa 4
.Xr lptcontrol 1
.Sh BUGS
There are lots of them, especially in cheap parallel port implementations.
.Pp
This driver could stand a rewrite.
This driver could still stand a rewrite.