Article View: comp.sys.atari.st
Article #31804Degas file format
From: barry comer
Date: Sat, 09 Apr 1988 21:02
Date: Sat, 09 Apr 1988 21:02
44 lines
2208 bytes
2208 bytes
Some people were asking about the Degas picture file format, well
here it is:(1 word = 2 bytes)
1 word - Word value is 0=low rez, 1=mid rez, 2=high rez
16 words - colour palette, standard st bios format
16000 words - raw pic data
The following are optional:(added to the normal degas format for
Degas Elite)
4 words - Left animation limit table
This is a table of 4 words values which specify the left limits
of each of the four colour animation channels. The values range
from 0-15, indicating that the corresponding colour palette entry
is the left range of the animation channel's range.
4 words - Right animation limit table
Same as the one for left, but this value should be greater than or
equal to the corresponding left animation limit value for proper
operation.
4 words - Animation channel direction flag
This is a table of 4 word values which specify the cycling
direction for the corresponding animation channel. A value of 0
indicates that the channel shifts its colours to the left,1=
channel is off, and 2=a right shift.
4 words - Animation channel delay
This is a 4 word value table which specifies the speed at which
the colour registers in the animation channel range will be
shifted. The range of permissible values in these variables are 0-
128, indicating the number of 60Hz delay periods between colour
shifts. A value of zero in this table indicates the max speed,
approx. 60 shifts per second; a value of 60 is approx. one shift
per second; a value of 120 is roughly one shift every two seconds.
Well that is the file format for Degas and Degas Elite pics. As I
said the bottom 16 words are optional.
later
Barry
P.S. Could someone that has the RTX multi-tasking prg., please
send me a short review of it.
Technical Details
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Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!dalcs!aucs!870646c From: 870646c@aucs.UUCP (barry comer) Newsgroups: comp.sys.atari.st Subject: Degas file format Message-ID: <1041@aucs.UUCP> Date: 9 Apr 88 21:02:06 GMT Reply-To: 870646c@aucs.UUCP (barry comer) Organization: School of Computer Science, Acadia Univ., Nova Scotia Lines: 44