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- Path: news.mcs.net!not-for-mail
- From: mryba@MCS.COM (Michal L. Rybarski)
- Newsgroups: comp.sys.amiga.misc,comp.sys.amiga.hardware
- Subject: Re: CyberGraphX memory (Was: Haynie joins AT team)
- Followup-To: comp.sys.amiga.misc,comp.sys.amiga.hardware
- Date: 30 Mar 1996 11:37:52 -0600
- Organization: MCSNet Services
- Message-ID: <4jjrhg$gvh@Venus.mcs.com>
- References: <14FEF421@cu-amiga.demon.co.uk> <4inrtg$hlp@vixen.cso.uiuc.edu> <4itcta$lpa@coranto.ucs.mun.ca> <4iutet$cb2@astfgl.idb.hist.no> <neilo-2303961948150001@d59-1.cpe.maroochydore.aone.net.au> <3156B2C7.2E09@plea.se> <4j9dcd$mmi@Venus.mcs.com> <4ja
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- mk8$dbs@daily-planet.execpc.com>
- Distribution:
-
- Jonathan Gapen (innuendo@mail.execpc.com) wrote:
-
- : mryba@MCS.COM (Michal L. Rybarski) writes:
- : >
- : > There's one trick SVGA(CyberGfx) cannot pull: run efficiently on 6Meg
- : > machine. And untill we have something faster than 68k family processors,
- : > some available SVGA tricks will not work either( read:they need a lot of CPU
- : > power Amigas don't have).
-
- : Well now, lets do a little math here. Let's take a typical screen, say 800
- : pixels high, 600 pixels wide, and 24 bits deep, or 3 bytes per pixel. That's
- : 480,000 pixels at three bytes each: 1,440,000 bytes. Even a simple 8 bit
- : 640x480 screen takes nearly 300k of memory. It's not a flaw in SVGA chipsets,
- : or CyberGraphX, it's just that high color screens take a lot of memory. As a
- : certain Ambassador once said, "And here we are, victims of mathematics!" :-)
-
- Yeah, math has no mercy :), even for Amiga. Amiga system enjoyed "little
- memory and resources required, yet very, very efficient" fame for
- years. All of that is in the chips and architecture we have to leave at some
- point.
-
- -Planar modes, as you certainly proved, save a lot of memory
- (I belive it was the only thing which made multiple screens a reality on
- the Amiga and nowhere else)
-
- -Chip ram can not only be used to store graphic but also sound and code,
- where SVGA needs 4Meg for its own and only use.
-
- These are the reasons why I would stick with AGA for low end AT machines
- same way the Walker does. Perhaps, it would be possible to revive the
- AGA chipset a little bit with the AgaEXTENDER described by Fabio
- Bizzetti...(If I had a milion dollars I would invest in such a dream :)
-
- It will be a long time until Amiga will tune in to the new memory and
- resource requirements and AT will change their favorite tune "Amiga, so
- efficient requires no ;) memory computer"
-
- When Amiga takes on the mainstream it will certainly require 8Megs
- minimum, fast PPC processor...and almost a miracle(AmiOS4.0?) to get away
- from "just another clone" seeming...but that's another story ;)
-
- cheers,
- Michal
-