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- Path: sparky!uunet!spool.mu.edu!agate!dog.ee.lbl.gov!news!nosc!crash!hale!god
- From: god@hale.cts.com (David J. Calabrese)
- Newsgroups: comp.sys.ibm.pc.hardware
- Subject: Re: EISA vs. ISA -VESA Local Bus MotherboardsDIR
- Message-ID: <k8RNVB1w165w@hale.cts.com>
- Date: Fri, 11 Dec 92 23:34:07 PST
- References: <1992Dec11.181215.315@csghsg5a.bitnet>
- Organization: Hale Telecommunications Inc.
- Lines: 62
-
- lmebold@csghsg5a.bitnet writes:
-
- > In article <TOMW.92Dec10205510@orac.asd.sgi.com>, tomw@orac.asd.sgi.com (Tom
- > > In article <1992Dec10.232429.13724@rti.rti.org>, rac@rti.rti.org writes:
- > >
- > >> I need some help deciding whether to buy a 486DX EISA motherboard,
- > >> or a ISA-VESA Local Bus motherboard.
- > >
- > >> It is my understanding that the EISA bus is a 32-bit wide bus,
- > >> and can therefore process more/larger information chunks than a
- > >> 16-bit wide ISA bus. Although the ISA bus is running at (usually)
- > >> 8MHz, I've not heard what speed the EISA bus is normally.
- >
- > >
- > >> In addition, since the VESA Local Bus standard is for video only,
- > >> it is my understanding that motherboards that have additional
- > >> local bus slots and /or have the IDE controller on the local bus
- > >> are proprietary arrangements which may be incompattable with
- > >> some hardware.
- > >
- >
- > I'd be careful when buying a local bus pc. Although der is a VESA standard
- > that still doesn't mean that all these pc's will be compatible. If you want
- > to go with local bus I would suggest you make up your mind on what you want
- > to get and buy that - it's not guaranteed that you can upgrade later on.
- >
- >
- > Apart from that EISA has more advantages like IRQ-sharing, DMA-functions
- > (with ISA bus you cannot address more than 16MB RAM directly - EISA can),
- > easier setup of new cards (you don't need to set any jumbers - at least it
- > should be like that; there are still some cards which need to be jumpered).
- > Furthermore EISA is a standard and you can use every EISA-card in every
- > EISA-system (just like ISA-cards in ISA-systems) whereas with local bus
- > that's not possible.
- >
- > My suggestion: If you can afford it, get an EISA.
- >
- > - Luke
-
-
- VL-bus (local bus) isn't just for video, but I'd still have to
- confer with the Good Side of The Force (Luke). Buy the EISA,
- because let's face it -- any PC you buy is outdated 2 to 3
- weeks before you purchase it, so why start off with dated-tech?
-
- Also, EISA looks cooler.
-
-
- * david j. calabrese *
-
-
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