From:	cyber_s AT my-dejanews DOT com
Newsgroups:	comp.os.msdos.djgpp
Subject:	BitMap Address
Date:	Thu, 10 Sep 1998 18:08:22 GMT
Organization:	Deja News - The Leader in Internet Discussion
Lines:	23
Message-ID:	<6t94il$h2i$1@nnrp1.dejanews.com>
NNTP-Posting-Host:	155.83.190.204
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Hi all,

  A guy I work with wants me to do the following:

" To optimize the project, I need this: every bitmap will be 128x128 pixels. 
I need them to be packed in memory 4 of them in a 64K chunk.  The first
bitmap in the group will be at a 64K aligned address, so that the 32bit
pointers will look like this in hex ( xxxx0000 - address of first pixel in
1'st bitmap)  (xxxx0010  - address of first pixel in 2'nd bitmap)  (xxxx1000 
- address of first pixel in 3'rd bitmap)  (yyyy0000  - address of first pixel
in 4'th bitmap) "

Is this even possible.	The screen will be 640x480x8.  So if I read my
documentation correctly, if we used 16, 24, or 32 bit,	the bitmaps will not
be aligned in memory in the first place. We are using Allegro, but I can't
find anyway to load a bitmap at a specific address.  So I would like to know
if the above is possible, and if it is, where should I start looking.  I an
clue-less, Thanks

cyber_s

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