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Article #1233

Re: Sprite storage in Mode X -- Need More ROOM!

#1233
From: Baylor
Date: Mon, 28 Sep 1992 04:49
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>
>Magic Pockets and Gods use the 320x200 16 colour EGA mode but use the VGA
>palette. This is probably because it is the mode that is most ST/Amiga
>compatible. It is not Mode X. Mode 13 ($0D, 0DH) allows two page flip screens
>(@ 32K each) with 6 pages left for graphics (@ 192K). Not all the graphics
>have to be on the card though but what is will be faster.
>

	Ok, i'm no expert, and i've been wrong before, but somerthing about 
this feels wrong. I can't see a way where you can use the vga pallete
in mode D. It's 320x200x16. You get 1 bit per pixel, giving you a total
of 4 bits that can hold a color code; ie., 16 unique colors at a time.
	Gods looks to have more than 16 colors at a time, and you need
the extra bits to hold the color combos.
	As for the vga pallete, that's just a look up table where
the first 16 colors (maybe 64) are the EGA pallete colors. VGA can
only access more possible colors, not different ones.
	Oh yeah, and refering to mode D as mode 13 threw me for awhile
(yeah, i guess D is 13 decimal).
	Or maybe i'm just wrong. 
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From: baylor@ccwf.cc.utexas.edu (Baylor)
Newsgroups: rec.games.programmer
Subject: Re: Sprite storage in Mode X -- Need More ROOM!
Message-ID: <80600@ut-emx.uucp>
Date: 28 Sep 92 04:49:20 GMT
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Organization: The University of Texas at Austin, Austin TX
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