06-19-2007
isa serial port adapter card no longer detectedworking
hi all,
i've got an old PC with unix (SCO System V/386 rel. 3.2) on it.
Pentium I; 128mb; ISA 2-port RS232 serial adapter card for an oki dot-matrix printer. (no usb, no CD)
i've been running an old cobol program to do some invoicing and print reports.
some time back i changed the internal battery and since then i can no longer print to the oki printer.
i think it is unlikely that the isa adapter card has gone bad....
more likely, maybe some setting was lost in CMOS when i changed the battery...
any ideas, anyone......
PS:
i'm a relative newbie.
the guy who installed the unix is nowhere to be found and i do not have the installation disks. it is likely many programs had not been installed.
i have not been able to find another working isa serial adapter even for testing.
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ULPT(4) BSD Kernel Interfaces Manual ULPT(4)
NAME
ulpt -- USB printer support
SYNOPSIS
To compile this driver into the kernel, place the following line in your kernel configuration file:
device ulpt
Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):
ulpt_load="YES"
DESCRIPTION
The ulpt driver provides support for USB printers that follow the printer bi- or uni-directional protocol. The bits in the minor number
select various features of the driver.
Minor Bit Function
64 Do not initialize (reset) the device on the port.
Some printers cannot handle the reset on open; in case of problems try the unlpt device.
HARDWARE
The ulpt driver provides support for USB printers and parallel printer conversion cables, including the following:
o ATen parallel printer adapter
o Belkin F5U002 parallel printer adapter
o Canon BJ F850, S600
o Canon LBP-1310, 350
o Entrega USB-to-parallel printer adapter
o Hewlett-Packard HP Deskjet 3420 (P/N: C8947A #ABJ)
o Oki Data MICROLINE ML660PS
o Seiko Epson PM-900C, 880C, 820C, 730C
FILES
/dev/ulpt? device with reset
/dev/unlpt? device without reset
SEE ALSO
lpt(4), usb(4)
HISTORY
The ulpt driver appeared in NetBSD 1.4. This manual page was adopted from NetBSD by Tom Rhodes <trhodes@FreeBSD.org> in April 2002.
BSD
November 22, 2006 BSD