Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!ucbvax!hplabs!hpda!athertn!jimb
From: jimb@athertn.Atherton.COM (Jim Burke)
Newsgroups: comp.sys.ibm.pc
Subject: BIOS Shadowing / Memory usage???
Message-ID: <6541@athertn.Atherton.COM>
Date: 14 Jul 89 19:35:25 GMT
Distribution: usa
Organization: Atherton Technology, Sunnyvale, CA
Lines: 16

I recently bought a PC with AMI bios that supports bios memory shadowing.
The system was sold as a 1 Mb system.  When I boot, the machine goes
through a memory check of 1Mb.  However, when I use Norton SI, it can
only find 640Kb of memory.  I contacted the company I bought the system
from and they said the other 384Kb is used by the system for system stuff
like bios shadowing, etc.  My question is this: is this a reasonable 
explaination?  Does bios shadowing actually capture main memory and make
it transparent to DOS?  What other system features use main memory this
way?  Seems to me that I didn't get a 1Mb machine, but rather a 640Kb
machine.


-- 
Jim Burke        (408) 734-9822 (temp)  | I'll stop posting when they pry my 
jimb@Atherton.COM                       | cold, dead fingers from the smoking
{decwrl,sun,hpda,pyramid}!athertn!jimb  | keyboard.