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- Newsgroups: comp.sys.ibm.pc.hardware
- Path: sparky!uunet!mcsun!sunic!psinntp!psinntp!tandon!tdbear
- From: tdbear@tandon.com (Tom Barrett)
- Subject: Re: Help - Cyrix processors, anyone know for sure?
- Message-ID: <1992Aug18.172154.14739@tandon.com>
- Organization: Tandon Corporation, Moorpark, CA
- References: <0105010F.b54s7l@mprnews.mpr.com> <2197@fnnews.fnal.gov>
- Date: Tue, 18 Aug 1992 17:21:54 GMT
- Lines: 18
-
- In article <2197@fnnews.fnal.gov> rohrer@fncrd6.fnal.gov (Keith Rohrer) writes:
- >I take it this is to avoid the Microsoft HMA kludge; can those of us
- >who use something besides DOS, or hold our right hands up and solemnly
- >swear not to use the HMA when we do, disable this feature?
-
- hehehe... probably, but there are a couple of problemos: (1)
- you would have to write a priviledged program for UNIX/OS2 to
- allow you to write to the IO ports in the Cyrix chip since
- those would most likely be priviledged ops, (2) it could be
- possible that the boot loader needs the A20 function (I don't
- know... but, the boot loader doesn't immediately go into protected
- mode). Of course if you did #1, then you probably wouldn't
- have to worry about #2.
- --
- Tom Barrett (TDBear) tdbear@tandon.com voice 805-378-6207
- Tandon Corporation tdbear@p6.f1006.n102.z1.fidonet.org fax 805-529-8895
- Sr. HW Design Engineer "War is Peace, No is Yes, And We're All Free!"
- [The views expressed herein may not be shared by the organization of origin]
-