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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!uwm.edu!psuvax1!psuvm!dxb132
- Organization: Penn State University
- Date: Fri, 20 Nov 1992 09:34:24 EST
- From: <DXB132@psuvm.psu.edu>
- Message-ID: <92325.093425DXB132@psuvm.psu.edu>
- Newsgroups: comp.sys.atari.st.tech
- Subject: Re: Falcon '030 BUS: 16 or 32 bit?
- References: <28401@castle.ed.ac.uk> <1992Nov20.110645.29992@email.tuwien.ac.at>
- Lines: 29
-
- In article <1992Nov20.110645.29992@email.tuwien.ac.at>, nino@vmars.tuwien.ac.at
- (Marinos Yannikos) says:
-
- >marks@castle.ed.ac.uk (Mark Steyn) writes:
- >: hutch@bellman.lanl.gov (John Hutchinson) writes:
- >:
- >Why do people complain about things they haven't even seen? Just because
- >32 is 2 times 16 it doesn't mean the falcon would be 2 x faster if it had
- >a 32 bit bus. And the video subsystem DOES have 32 bit access to memory.
-
- True, it's difficult to predict. Things like prefetching instructions
- tend make it worse than you might expect. The '040 is an extreme case:
- running over a relatively slow, 16-bit bus it is SLOWER (much slower even)
- than a plain 68000. There is no reason I can think of to run the '030 on
- a 16-bit bus (except to cripple the machine like Apple does), which makes
- me believe this is just misinformation. But who knows, it's Atari. :)
-
- >Just try to compare the A1200 at 640x480x256 with the falcon at the same
- >speed - the A1200 slows down to the speed of an A500 with that resolution,
- >while the falcon 030 is about 2.5-3 times faster than a 8MHz ST. Does the
- >A1200 still look better now? It's no point in discussing and complaining
- >about the falcon's design if you don't even know how it looks. It's very
- >cleverly done, IMHO.
-
- Good. Too bad that the Falcon is yet another closed Atari box, while C=
- has managed to put in a decent level of expandability for a low-end
- machine (PCMCIA plus a -complete- expansion connector for anything from
- simple fast RAM cards to '030/'040 accelerators).
-
-