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- Path: sparky!uunet!portal!cup.portal.com!Bob_BobR_Retelle
- From: Bob_BobR_Retelle@cup.portal.com
- Newsgroups: comp.sys.atari.st
- Subject: Re: WHAT'S GOING ON ?
- Message-ID: <69436@cup.portal.com>
- Date: Fri, 13 Nov 92 01:16:11 PST
- Organization: The Portal System (TM)
- Distribution: world
- References: <cdf1tb+@rpi.edu><1992Nov3.101001.12943@elroy.jpl.nasa.gov><689
- 15@cup.portal.com> <H.ea.Z7Z&fzI5IXU@jonh.wimsey.bc.ca>
- <69151@cup.portal.com> <H.ea.7pYUMdYNR&6@jonh.wimsey.bc.ca>
- Lines: 42
-
- John Henders writes:
-
- >>For anyone with the standard Atari short-memories, Allan Pratt
- >>*acknowledged* that the Atari "VME" was not fully implemented,
- >>saying something like "maybe next time".
-
- >I think if you check hias message, what you'll actually find he said
- >was that 3u was a subset of the full VME 6u bus. It's a bus for 68000
- >type applicationa, and the standard for 3U doesn't support things like
- >bus mastering. This is a little different than the way you're telling
- >it.
-
- >The "maybe next time " comment was made regarding a full 6U
- >implementation.
-
- Sorry John.. wrong twice in one message.
-
- VME is by definition a master/slave architecture. The physical
- size of the board has NOTHING to do with the electrical
- characteristics of the bus.
-
- The standard 3U card is fully implemented. The 6U card, in
- addition to the extra area available for component layout, only
- adds extra, optional, address and data lines.
-
- And, Allen Pratt's comment WAS addressing the shortcomings of
- the non-standard Atari implementation of the VME bus, saying
- that "maybe next time" they'd do a full, STANDARD,
- implementation of the VME standard.
-
- I'm afraid I missed your list of hundreds of 3U VME cards for
- the ST... or did you mean there are hundreds of VME cards that
- FIT into the ST..? How many of those hundreds of cards have
- you seen running in an ST..?
-
- Again, the AVME slot on the MegaSTe and TT are usable by only
- a tiny fraction of the available VME cards, and by only a
- tiny fraction of Atari owners. If anything, Atari was using
- the buzzword "VME" to try to sell computers to people who had
- no idea what it meant...
-
- BobR
-