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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!caen!mtu.edu!abcd.Houghton.MI.US!Jim_Johnson
- From: Jim_Johnson@abcd.Houghton.MI.US (Jim Johnson)
- Newsgroups: comp.sys.ibm.pc.hardware
- Subject: Re: VLB requires wait-states???
- Distribution: world
- Message-ID: <Jim_Johnson.0btw@abcd.Houghton.MI.US>
- Date: 20 Dec 92 19:15:51 EST
- Organization: Amiga BitSwap Central Dispatch
- Lines: 23
-
- In a message dated Sun 20 Dec 92 16:15, Keiths@cae.wisc.edu (keith Scidmore
- wrote:
- KS> [edited] What
- KS> it sounds like he was saying is that all VESA machines have memory
- KS> wait states. This would mean that to get the fast VESA bus you have
- KS> to degrade the performance of your memory system where reads usually
- KS> dominate over writes by about 3 to 1! Is this true?
-
- Local bus machines have several different places in the BIOS setup where
- wait states are set; i.e. memory, video, IDE interface. The number of wait
- states are set separately for each subsystem based on the relative
- performance of that subsystem to the system clock speed. Memory may have
- none due to a good cache design, video one or some, and the IDE interface
- lots due to hard drive access time and data transfer rates.
-
-
-
- -- Via DLG Pro v0.995
-
- jim_johnson@abcd.houghton.mi.us
- from Calumet, Michigan, USA -the world's former copper mining capital,
- located on Lake Superior and home to America's newest National Park,
- ** The Keweenaw National Historic Park **
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