From: skip@tacky.cs.olemiss.edu (Skip Sauls)
Newsgroups: comp.sys.amiga.graphics
Subject: Re: 256 color workbench?
Date: 18 Nov 92 16:21:27 GMT
Article-I.D.: ra.1992Nov18.162127.6731
Organization: University of Mississippi, Dept. of Computer Science

In article <69749@cup.portal.com> joeles@cup.portal.com (Joel Edward Swan) writes:
>>Skip Sauls (skip@tacky.cs.olemiss.edu) did _not_ write:
>>
>>> Try running CPUBlit -b.  It seems to work fine and I have not had any
>>
>>Interesting; I must have had an old version of CPU blit.  I tried on
>>that I had stored away a long time ago, and it crashed my 4000
>>instantly.  (I never used it on my 2000 since it didn't help noticeably
>>with a 16 bit chip ram bus).  I'll have to see if I can hunt down a new
>>version.  It'd be nice to have.  Right now 8 plane workbenches are
>>_really_ slow. (But 5 works nicely, and 6 is tolerable.  4 is really
>>fast.  I usually use 5 planes, in SUPER72:Super High Res).
>
>Something sounds fishy here.  I played around with a 4000 for some time at
>my dealer's store and 8bit WB was rather snappy (in dblNTSC & high res).
>It felt as fast as an 4 bit deep 2500/30 ESC screen.  Perhaps something is
>not set properly on your machine.

Hey, I'm not the one who wrote what you are responding to, but I'll be
happy to reply.  :-)  I agree that the 8bit WB is as fast as a 4bit WB
on the A3000, but that isn't exactly snappy.  :-)

I ran a 3bit WB on my A3000 and have been running a 6bit WB on my A4000.
The graphics performance is as good or better and the text scrolling is
actually a bit faster.  For comparison, the 8bit WB in dblNTSC high res
no flicker with 676x467 res is comparable to the 640x480 8bit mode on
my 486-50DX/ET4000 at work running Windows 3.1.  In terms of scrolling,
the A4000 wins, but the 486 does better with some screen redraws.  To
explain a bit further, both machines are finished redrawing at about the
same time, but the A4000 exhibits "bitplane flicker" during redraws.

>>More on multiview: I can get multiview to crash my system instantly by
>>doing this:
>>
>>  1. Multiview an IFF pic on your workbench screen
>>  2. Reduce the size of the multiview window.  Sometimes it crashes
>>     here.
>>  3. Try to use the scroll bars.  If it got by step #2, it crashes here
>>     on maybe 80% of the IFF files I have.  If it crashes on a given
>>     file, it crashes every time on that file, and if it works, it works
>>     every time.  I don't think there is anything wrong with the IFF
>>     file itself.
>
>It does sound like something's messed up in your system.  I've yet to see MV
>crash doing this, even with lots of MV's running and resizing them.

I have to agree here.  I've been using MultiView extensively with all sorts
of pictures, sound, text files, and AmigaGuide files without a single crash.

>> - steve
>
>-Joel
>-------
>   ========================================================================
>  / Joel E. Swan....Pres./...Media Specialties, Ltd., Oak Forest, IL.USA  /
> / & Senior Producer..../...Moody Broadcasting Network, Chicago, IL. USA /
>/ Portal ID: joeles..../...joeles@cup.portal.com                        /
>========================================================================

Skip Sauls
skip@tacky.cs.olemiss.edu
Newsgroups: comp.sys.amiga.graphics