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- Xref: sparky comp.sys.amiga.graphics:5797 comp.sys.amiga.advocacy:22452
- Path: sparky!uunet!cis.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!pacbell.com!tandem!zorch!amiga0!mykes
- From: mykes@amiga0.SF-Bay.ORG (Mike Schwartz)
- Newsgroups: comp.sys.amiga.graphics,comp.sys.amiga.advocacy
- Subject: Re: X-Pert Systems Domino Board
- Distribution: world
- Message-ID: <mykes.0d46@amiga0.SF-Bay.ORG>
- References: <=a_n0cr@lynx.unm.edu> <1992Aug21.121428.12767@ra.msstate.edu> <1992Aug24.043301.13228@qdpii.comp.qdpi.oz.au> <1992Aug25.031201.27380@newshost.unh.edu>
- X-NewsSoftware: GRn 1.16f (beta) by Mike Schwartz & Michael B. Smith
- Date: 27 Aug 92 00:13:30 PST
- Organization: Amiga makes it possible
- Lines: 44
-
- In article <1992Aug25.031201.27380@newshost.unh.edu> pss1@kepler.unh.edu (Paul S Secinaro) writes:
- > In article <1992Aug24.043301.13228@qdpii.comp.qdpi.oz.au> davidme@qdpii.comp.qdpi.oz.au (David Meiklejohn) writes:
- >
- > >Of course, you don't have to deal with 64k segments if you have a 32-bit OS,
- > >but even with protected mode 386 code, you still have to write to the SVGA card
- > >through a 64k window. Animation could go faster on PCs if the vram was mapped
- > >as a linear 1 MB block. As far as I can see, this will continue to be a
- > >bottleneck for some time.
- >
- > Well, most, if not all, of the newer SVGA/accelerated/localbus
- > chipsets support linear address space if you have the proper bus/OS,
- > but if you are writing to the lowest common denominator, then yes, 64K
- > segmented video will be around for a long time.
- >
-
- Amazing what a 32-bit address space does for a machine...
-
- What you want is an OS/2 or Windows DIG driver that treats your hardware
- linearly. Then ALL your apps take advantage of the linear addressing.
-
- > >in a MSDOS window is as slow as it is in a Bridgeboard window on my Amiga, but
- > >I've seen much worse Windows screen updates on your typical 386SX with, say, a
- > >Paradise PVGA in 800x600 in only 16 colours.
- >
- > Yeah, the PVGA is really a dog. Even at 640x480x16 on a 386/20 it's
- > slow.
- >
-
- Next year, you just by an accelerated 24 bit board for $59.95 and plug it in :)
-
- >
- > --
- > Paul Secinaro
- > pss1@kepler.unh.edu
- > Synthetic Vision and Pattern Analysis Laboratory
- > UNH Dept. of Electrical and Computer Engineering
-
- --
- Amiga programmer of: GRn, MailMinder, Budokan, Beyond Dark Castle, Dark Castle
- Sega Genesis programmer of: Dick Tracy and Marble Madness.
- Mike Schwartz (ames!zorch!amiga0!mykes or mykes@amiga0.sf-bay.org)
- 1124 Fremont Ave.
- Los Altos, CA 94024
-
-