Article View: comp.sys.ibm.pc
Article #42489Re: Steve Gibson's 386sx column
From: Phil Ngai
Date: Thu, 15 Feb 1990 17:46
Date: Thu, 15 Feb 1990 17:46
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In article <40970047@hpindda.HP.COM> huilin@hpindda.HP.COM (Hui-Lin Lim) writes:
|Is the BIOS at f000-f800 automatically disabled so that it
|doesn't appear in the memory map or does it have to be manually
|disabled? If the latter case, how is this done?
Nope, it's the magic of QEMM-386/386^Max. The MMU remaps the logical
addresses F000:0-8000 to real RAM, probably in the extended address
range but the actual location is irrelevant.
--
Phil Ngai, phil@amd.com {uunet,decwrl,ucbvax}!amdcad!phil
When guns are outlawed, only governments will have guns.
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!brutus.cs.uiuc.edu!wuarchive!texbell!texsun!newstop!sun!amdcad!pepsi!phil From: phil@pepsi.amd.com (Phil Ngai) Newsgroups: comp.sys.ibm.pc Subject: Re: Steve Gibson's 386sx column Message-ID: <29184@amdcad.AMD.COM> Date: 15 Feb 90 17:46:59 GMT References: <29140@amdcad.AMD.COM> <40970047@hpindda.HP.COM> Sender: news@amdcad.AMD.COM Reply-To: phil@pepsi.AMD.COM (Phil Ngai) Organization: Advanced Micro Devices, Inc. Sunnyvale CA Lines: 12