Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.csd.uwm.edu!gem.mps.ohio-state.edu!tut.cis.ohio-state.edu!pt.cs.cmu.edu!b.gp.cs.cmu.edu!ralf From: ralf@b.gp.cs.cmu.edu (Ralf Brown) Newsgroups: comp.sys.ibm.pc Subject: Re: Memory in Compaq 386 Message-ID: <6019@pt.cs.cmu.edu> Date: 31 Aug 89 19:04:36 GMT References: <1538@draken.nada.kth.se> Organization: Carnegie-Mellon University, CS/RI Lines: 15 In article <1538@draken.nada.kth.se> d88-eli@nada.kth.se (Erik Liljencrantz) writes: }like them to be). CEMM is a memory hog. It consumes 33Kb conventional memory }and gives me 256Kb EMS memory. It also degrades the performance of the }CPU (from 33Mhz to 31Mhz according to Landmark). Not surprising, since you have to turn on Virtual-86 mode to be able to emulate EMS on the 386, which means that *every* memory access has to go through the on-chip memory managment unit, which it doesn't have to do in real mode. -- {backbone}!cs.cmu.edu!ralf ARPA: RALF@CS.CMU.EDU FIDO: Ralf Brown 1:129/46 BITnet: RALF%CS.CMU.EDU@CMUCCVMA AT&Tnet: (412)268-3053 (school) FAX: ask DISCLAIMER? |"Humor is laughing at what you haven't got when you ought to What's that?| have it." -- Langston Hughes