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- Newsgroups: comp.sys.ibm.pc.hardware
- Path: sparky!uunet!cis.ohio-state.edu!magnus.acs.ohio-state.edu!usenet.ins.cwru.edu!po.CWRU.Edu!dab6
- From: dab6@po.CWRU.Edu (Douglas A. Bell)
- Subject: Re: 32 bit BIOS, etc. (was RE: 486/50'2 vs Sun 2's
- Message-ID: <1992Jul28.175548.26125@usenet.ins.cwru.edu>
- Sender: news@usenet.ins.cwru.edu
- Nntp-Posting-Host: thor.ins.cwru.edu
- Reply-To: dab6@po.CWRU.Edu (Douglas A. Bell)
- Organization: Case Western Reserve University, Cleveland, OH (USA)
- References: <92210.111717REE700A@MAINE.MAINE.EDU>
- Date: Tue, 28 Jul 92 17:55:48 GMT
- Lines: 25
-
-
- In a previous article, REE700A@MAINE.MAINE.EDU () says:
-
- >
- > Somehow, the previous thread degenerated from a comparison to a speculation a
- >bout 32-bit software, an over-hyped thing, given that it's all based on a real-
- >mode bios!
- >
- >+>perhaps this would have more to do with the key-repeat rate on the 486 ??
- >+>also: a 486 running 32bit OS/2 2.0 programs is about 4 time faster on
- >+>integer code ( let alone floating point ) than the same machine under dos.
- >+>(ie: think about what you are actually measuring !!!)
- >
- > Maybe OS/2 avoids the DOS-bios (hence it's large size) but, 32-bit pointers
- >don't inherently buy you anything except simpler segmentation (not to understat
- >e the advantages to the developer there). Otherwise, there is little or no sav
- >ings between 32-bit protected mode pointers and 16-bit protected mode pointers.
-
-
- I though the 32 bit "flat" address space worked quicker because the processor
- did not get bogged down computing the 'segment-offset' stuff every time it had
- to do a pointer.
-
- ???????
-