Path: utzoo!attcan!uunet!tektronix!tekig5!wayneck
From: wayneck@tekig5.PEN.TEK.COM (Wayne Knapp)
Newsgroups: comp.graphics
Subject: Re: Amiga or PC-AT ?
Message-ID: <3109@tekig5.PEN.TEK.COM>
Date: 5 Aug 88 18:17:10 GMT
References: <1820006@hpuamsa.UUCP> <554@gort.cme-durer.ARPA> <356@uwslh.UUCP>
Organization: Tektronix Inc., Beaverton, Or.
Lines: 18

In article <356@uwslh.UUCP>, lishka@uwslh.UUCP (Fish-Guts) writes:
> In article <554@gort.cme-durer.ARPA> brickman@rosie (Jonathan E. Brickman) writes:
> >(1) Awkward and rigid color mapping arrangement. (On Amiga)
. 
.      I am not sure what Mr. Brickman means by this.  The strangest
. color-mapping strategy on the Amiga is HAM mode (Hold-And-Modify
. mode), which uses a "trick" to allow up to the full 4096 colors on the
. screen at once, using only 6 bit-planes.  All other modes are "mapped"
. into ram by using from 1 to 5 bit-planes, using straightforward
. bit-maps. 
>
I think the real problem is that you can only get 4 bit control over
each color.  That is if you are working with prue blue, red, or green
you can only get 16 shades of each.  That is a bit on the low side if
you want to do true to life shading and avoid banding in your shading.
A lot of VGA cards give you better color control.
 
                                                Wayne Knapp