Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!wuarchive!kuhub.cc.ukans.edu!orand From: orand@kuhub.cc.ukans.edu Newsgroups: comp.sys.ibm.pc Subject: Re: Yet another 640K question Message-ID: <22227.25d94d54@kuhub.cc.ukans.edu> Date: 14 Feb 90 18:21:40 GMT References: <5420@bgsuvax.UUCP> <1990Feb11.191736.7917@agate.berkeley.edu> Organization: University of Kansas Academic Computing Services Lines: 33 In article <1990Feb11.191736.7917@agate.berkeley.edu>, ilan343@violet.berkeley.edu writes: > 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? I have a nameless clone 286 motherboard that is able to assign the memory above the 640k as extended. The only problem is that when I put my 4Meg EMS board in, this memory is lost. Instead of reporting 5 Meg of memory, my system reports 4+640k (whatever that turns out to be.) Anyway, this was off the topic, but I wanted to let you know that other generic boards will use the 384 as extended. brady... =========================================================================== Brady Orand - University of Kansas Computer Center Lawrence, Ks. 66045 ORAND@kuhub.cc.ukans.edu Work: (913) 864-0490 Home: (913) 749-1341 ===========================================================================