Hi,
first, sorry for the delay. I had a short vacation over easter.
[del]
> > (gdb) info all-registers
> > eax 0xff 255
> > ecx 0x3d5 981
> > edx 0x3d5 981
> > ebx 0x3d5 981
> > [snip]
>
> > The loop starts at 0x401a9759 and goes to 0x401a975e. If I jump to
> > 0x401a9760 in the debugger, the server terminates. So, it reads 0x3d5,
> > whatever that is (probably I/O stuff) and the test never succeeds.
>
> Looks like it's looping in function gfx_vga_mode_switch() near the tail end of
> xc/programs/Xserver/hw/xfree86/drivers/ncs/gfx/vga_gu1.c, part of which reads
>
> /* WAIT UNTIL SOFTVGA HAS VALIDATED MODE IF ENDING MODE SWITCH */
> /* This is for VSA1 only, where SoftVGA waits until the next */
> /* vertical blank to validate the hardware state. */
>
> if ((!active) && (!(gu1_detect_vsa2()))) {
> OUTB(crtcindex, 0x33);
> while (INB(crtcdata) & 0x80) ;
> }
>
> Change this to ...
>
> /* WAIT UNTIL SOFTVGA HAS VALIDATED MODE IF ENDING MODE SWITCH */
> /* This is for VSA1 only, where SoftVGA waits until the next */
> /* vertical blank to validate the hardware state. */
>
> if ((!active) && (!(gu1_detect_vsa2()))) {
> int cnt = 256;
>
> OUTB(crtcindex, 0x33);
> while (--cnt && (INB(crtcdata) & 0x80));
> }
>
> ... and see what happens.
Great! Now, it terminates correctly,
Thanks a million,
Uli
--
Ulrich Teichert, IDF EUROPE, Obenhauptstrasse 11, 22335 Hamburg, Germany
fon: +49 40 59 39 39 0, fax: +49 40 59 39 39 11
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