Date: Fri, 20 Feb 1998 15:57:25 -0600 From: "J. C. Vazquez" <jcvp@dextracode.com> To: hackers@FreeBSD.ORG Subject: A "bus error" while doing outb()/inb() Message-ID: <34EDFC45.E2DC6C33@dextracode.com>
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Hi there!
I'm getting a "buss error" (signal SIGBUS) doing I/O with inb() and
outb() to any
port. This is running under FreeBSD 3.0-CURRENT, logged on as root.
Before this, I
do open("/dev/io",RW) and check any return error. gdb says that the
signal was
received in outbv()/inbv(). The following is an example:
¦#include <machine/cpufunc.h>
...
outb(0x70, 0x0);
x1=inb(0x71);
outb(0x70, 0x02); /* <-------- a "buss error" here, core nicely
dumped */
...
Does anybody have an idea what's going on? Any help/comments will be
highly
appreciated. Thank you all.
-jcvp-
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