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From: pbd@runyon.cim.cdc.com (Paul Dokas)
Newsgroups: comp.unix.bsd
Subject: X386 gives a bus error in ET4000EnterLeave()
Message-ID: <48243@shamash.cdc.com>
Date: 2 Oct 92 21:11:25 GMT
Article-I.D.: shamash.48243
Sender: usenet@shamash.cdc.com
Organization: ICEM Systems, Inc.
Lines: 52
I've completely rebuilt X11R5 from the original (patched) MIT source
and now I'm trying to run it, but typing "X386 :0" results in:
X386 Version 1.2E 1.0.1 / X Window System
(protocol Version 11, revision 0, vendor release 5000)
Bus error
:-(
My SVGA card is a et4000 card (Diamond SpeedStar Plus) in a generic
386. I've tried several different Xconfig's, but there seems to be
little difference:
.
.
.
#
# The graphics drivers
#
vga256
chipset "et4000"
videoram 1024
viewport 0 0
virtual 1024 1024
clocks 25 28 65 72 79 59 64
modes "640x480" "800x600" "1024x768"
ModeDB
#Modename clock horzontal timing vertical timing
"640x480" 25 640 664 760 800 480 491 493 525
"800x600" 36 800 824 896 1024 600 601 603 625
40 800 840 968 1056 600 601 605 628
"1024x768" 65 1024 1088 1200 1328 768 783 789 818
I've run X386 through gdb and found that it's dying on line 398
of et4000/driver4.c, which is:
vgaIOBase = (inb(0x3CC) & 0x01) ? 0x3D0 : 0x3B0;
(actually in the inb() which is an inline function found in ../../compiler.h)
So it seems that I can't read/write to the needed ports. Anyone have any
suggestions? Am I SOL because of the Diamond card? I thought that the
proprietary clocks were only on the newer cards like the Stealth.
BTW, I've patched and rebuilt my kernel with the XSERVER patches. I've
also created a /dev/vga with "mknod /dev/vga c 12 0".
--
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#define FULL_NAME "Paul Dokas"
#define EMAIL "pbd@runyon.cim.cdc.com"
/* we are realizing infinite possibilities in exchange for our soul */