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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!cs.utexas.edu!asuvax!chnews!hfglobe!sting
- From: sting@hfglobe.intel.com (Joe Bennett)
- Subject: Re: 486SLC chip.... what it it?
- Message-ID: <Bz89I7.23u@hfglobe.intel.com>
- Organization: Intel Corporation
- References: <8f8d5m200WAL42H2tB@andrew.cmu.edu> <1992Dec13.033749.1675@ucsu.Colorado.EDU> <1992Dec13.060559.3867@en.ecn.purdue.edu>
- Date: Mon, 14 Dec 1992 02:27:43 GMT
- Lines: 31
-
-
- As for why the 486SLC by Cyrix will not run NeXTStep, I think
- something should be considered:
-
- NeXTStep is the first, to the best of my knowledge, 32 bit
- anything for the general PC market since Cyrix and AMD started
- their clone operations. I don't believe that Cyrix could have
- possibly tested 32 bit stuff adequately, because there was very
- little of it out there, and they were aiming for the entry level
- market as well.
-
- My feeling is, they booted up DOS, Windows, probably a flight
- simulator and a spreadsheet, and said, "It's compatible" (okay,
- I'm sure the tests were more involved than that, but that's the
- general idea.)
-
- Now when Next ported their OS to the 486, they probably had to
- do some tweaking to their compilers. This probably meant getting
- an Intel 486 programmer's reference manual to do it. After fixing
- a few bugs (either due to something undocumented in the manuals,
- documented incorrectly, etc) they got the OS functional. These
- nondocumented/incorectly documented things could be a partial
- reason for what's causing NeXTStep not to run on the Cyrix chip.
-
- Two broad assumptions on my part, but I wouldn't be surprised if
- that had at least something to do with it.
-
- I really wouldn't be too surprised if other true 32 bit code for
- the x86 family also had problems on the Cyrix part.
-
- But we'll have to wait and see.
-