Mail Archives: djgpp/1992/04/20/15:52:00
Although 1.06 is released I still have a 1.05 related question
(havn't had the time to install this big chunk and as I'm presently
a little bit under pressure I'm cautious and don't want to run
unneccessarily into unwanted trouble):
I have a hand rolled blit routine which memsets bits in 0xd0000000 VRAM.
Presently I see strange things happen. (bitmaps are sometimes garbled
and I wonder if it's a 1.05 problem, a general problem, a problem induced
by myself - the latter is the most probable one :-), anyway, I'm
getting a segmentation violation in pointer 0x004a8000 at 40:8e2c.
DJ, does this ring any bells? I mean, the pointer 004a8000 looks so special.
Somehow I have in mind that I read across a comment that a memory access
into mapped VRAM could cause a off screen memory reference. I'm not
sure whether this was in the DJGPP programs - it could also have been else-
where.
But if there are known problems in that area in 1.05 it could be a reason
for me to switch as fast as possible to 1.06.
--Chris
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