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From: wecker@cookie.dec.com.UUCP
Newsgroups: comp.sys.amiga
Subject: WARNING: A large GOTCHA when running DBW_Render on a VAX
Message-ID: <9062@decwrl.DEC.COM>
Date: Sat, 4-Apr-87 16:04:49 EST
Article-I.D.: decwrl.9062
Posted: Sat Apr  4 16:04:49 1987
Date-Received: Sun, 5-Apr-87 13:09:38 EST
Sender: daemon@decwrl.DEC.COM
Organization: Digital Equipment Corporation
Lines: 15

Guess what? I lied about the RAY software working on a VAX. Well sort of....

It compiles, and runs. However, everyone who tries to download the .TMP file
gets garbage. The reason? Simple, the VAX does numbers from low to high byte
and the 68000 does the opposite. So all of the fwrite() calls (in FIL.C) have
to be replaced with the appropriate "number flipping" routine.

FYI:	I have done this (as part of working on DBW_Render V2.0) and also
	made a version of RAY2 which runs on the VAX. These will be available
	as part of the major DBW_Render rewrite (hopefully in a few months).

BTW:	RAY2 has been changed to do a "median split" algorithm instead
	of a "poularity" based one which means that non-ham (32 color images)
	are almost indecernable from the HAM (4096 color) versions! See the
	1986 SIGRAPH proceedings for details on color compression.