Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!uwvax!puff!gumby!pochron
From: pochron@gumby.cs.wisc.edu (David Pochron)
Newsgroups: comp.sys.amiga.tech
Subject: Re: 4096 Hires
Message-ID: <3589@puff.cs.wisc.edu>
Date: 2 Nov 89 18:42:14 GMT
References: <4801@sdcc6.ucsd.edu> <11906@mcdphx.phx.mcd.mot.com> <4463@sugar.hackercorp.com>
Sender: news@puff.cs.wisc.edu
Reply-To: pochron@gumby.cs.wisc.edu (David Pochron)
Organization: U of Wisconsin CS Dept
Lines: 18


With all this discussion of 4096 colors in hires and HAM mode, would anyone
happen to know if it's possible to specify a 4-bitplane HAM mode with the
new chipset?  (Already tried it with the current one, and no dice.)  This
would give you 4 base colors and would allow you to use HAM mode in hires
*for real.*

The other question I have is this:  I tried getting HAM mode in hires by
writing directly to the bitplane DMA data registers but either the chipset
is masking off the 5th and 6th shift registers, or the 68000 isn't fast enough
to dump 6 words (using MOVEM) into these registers.  When I do this I get
an image but all it has are the base colors...no HAMming is occuring.
Has anyone else ever tried this?


       -- David M. Pochron  | "Life's a blit,
                            |  and then you VBI."
 pochron@gumby.cs.wisc.edu  |