Date: Wed, 28 Oct 1998 16:57:31 -0800 From: Parag Patel <parag@cgt.com> To: current@FreeBSD.ORG Cc: tjm@codegen.com, eric@needhams.com Subject: Mod to doscmd's port.c to directly access parallel ports Message-ID: <199810290057.QAA20847@pinhead.parag.codegen.com>
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I just acquired a Needhams EMP-10 EPROM programmer and wanted to run it
directly under FreeBSD 3.0-CURRENT.
So I modified doscmd's port.c to let me run the Needham DOS software
which wants direct access to a parallel port. I needed the following
patch to let me access the real I/O ports from the emulator to get to
the parallel port.
With this patch, I can run "doscmd -x -b -i0x378:8 -o0x378:8" as root,
connect up the EMP-10, and the Needhams software directly accesses the
parallel port from the DOS emulator window. Nice!
Would someone who knows this stuff better than me (not difficult) check
the mod for me, and if it's sane, please check it in? Thanks!
-- Parag
Index: port.c
===================================================================
RCS file: /src/freebsd/src/usr.bin/doscmd/port.c,v
retrieving revision 1.1
diff -c -r1.1 port.c
*** port.c 1997/08/09 01:42:54 1.1
--- port.c 1998/10/29 00:48:31
***************
*** 59,73 ****
static void
iomap(int port, int cnt)
{
! fatal("iomap not supported");
}
static void
iounmap(int port, int cnt)
{
! fatal("iomap not supported");
}
-
#else
static void
iomap(int port, int cnt)
--- 59,88 ----
static void
iomap(int port, int cnt)
{
! if (port + cnt >= MAXPORT) {
! errno = ERANGE;
! goto bad;
! }
! if (i386_set_ioperm(port, cnt, 1) < 0) {
! bad:
! perror("iomap");
! quit(1);
! }
}
static void
iounmap(int port, int cnt)
{
! if (port + cnt >= MAXPORT) {
! errno = ERANGE;
! goto bad;
! }
! if (i386_set_ioperm(port, cnt, 1) < 0) {
! bad:
! perror("iounmap");
! quit(1);
! }
}
#else
static void
iomap(int port, int cnt)
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