Yet another 640K question

Article View: comp.sys.ibm.pc

Article #42149

#42149

From: ilan343
Date: Sun, 11 Feb 1990 19:17

14 lines
1152 bytes

How many of the 386/AT motherboards out there are able to assign the
top 384K of the first 1M as exTENded memory?

This question was discussed a while ago in this news group, but I don't
remember seeing a definite answer.

I know the DTK/386 20Mhz motherboard (with a DTK BIOS) can do it.
However, I haven't seen any other motherboards used by low-end clone
makers that claim this capability.  If you believe the sales people in
the stores I went, once you disable the ROM shadowing in their machines
those memory locations (the top 384K) are lost.

Why is the DTK machine different? Motherboard, BIOS, memory
configuration?

Technical Details

Message-ID: <1990Feb11.191736.7917@agate.berkeley.edu>

Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!tut.cis.ohio-state.edu!ucbvax!agate!violet.berkeley.edu!ilan343

References: <5420@bgsuvax.UUCP> <NELSON.90Feb10222008@image.clarkson.edu>

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!tut.cis.ohio-state.edu!ucbvax!agate!violet.berkeley.edu!ilan343
From: ilan343@violet.berkeley.edu
Newsgroups: comp.sys.ibm.pc
Subject: Yet another 640K question
Summary: Where did the 384K go?
Message-ID: <1990Feb11.191736.7917@agate.berkeley.edu>
Date: 11 Feb 90 19:17:36 GMT
References: <5420@bgsuvax.UUCP> <NELSON.90Feb10222008@image.clarkson.edu>
Sender: usenet@agate.berkeley.edu (USENET Administrator;;;;ZU44)
Organization: University of California, Berkeley
Lines: 14

Reply to Parent Message