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- From: mccall@mksol.dseg.ti.com (fred j mccall 575-3539)
- Subject: Re: Does VESA Local Bus put a huge strain on a CPU?
- Message-ID: <1992Nov5.230528.15051@mksol.dseg.ti.com>
- Organization: Texas Instruments Inc
- References: <1992Nov5.172246.1853@mksol.dseg.ti.com> <1992Nov5.212451.20864@wam.umd.edu>
- Date: Thu, 5 Nov 1992 23:05:28 GMT
- Lines: 31
-
- In <1992Nov5.212451.20864@wam.umd.edu> rsrodger@next10csc.wam.umd.edu (Robert Stephen Rodgers) writes:
-
- >In article <1992Nov5.172246.1853@mksol.dseg.ti.com> mccall@mksol.dseg.ti.com
- >(fred j mccall 575-3539) writes:
- >> right. EISA isn't the way to go. In fact, under DOS EISA is a waste
- >> of money. It's practically impossible to saturate the ISA bus under
- >> DOS anyway. Of course, you could always buy an EISA video board (VERY
- >> expensive) or get a coprocessed board (so you send it 100k of
- >> instructions and it produces a 1M image -- also more expensive than a
- >> dumb frame buffer). All local bus does is save you a little money on
- >> the add-in cards. What do you do when someone comes up with a better
- >> coprocessed board and you're suddenly slower again?
-
-
-
- > Maybe you haven't figured it out yet: LB cards _ARE_
- > coprocessed. There is _no way_ for EISA to catch up.
-
-
- Maybe you haven't figured it out yet, but LB cards are mostly not
- coprocessed. They're things like ET-4000 framebuffer cards.
- Coprocessing doesn't buy you much on local bus, since the 'win' for
- local bus is being able to move huge amounts of data between two
- points quickly. If you're coprocessed, you don't need that capability
- for your video.
-
- --
- "Insisting on perfect safety is for people who don't have the balls to live
- in the real world." -- Mary Shafer, NASA Ames Dryden
- ------------------------------------------------------------------------------
- Fred.McCall@dseg.ti.com - I don't speak for others and they don't speak for me.
-