Date: Fri, 20 Feb 1998 15:43:39 -0600 From: "J. C. Vazquez" <jcvp@dextracode.com> To: Karl Pielorz <kpielorz@tdx.co.uk> Cc: hackers@FreeBSD.ORG Subject: Re: CD-ROM filesystems / read ahead / caching... Message-ID: <34EDF90B.6119371E@dextracode.com> References: <34EDC9B3.AAF5A8AC@tdx.co.uk>
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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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