Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!uunet!sjsca4!poffen
From: poffen@sj.ate.slb.com (Russ Poffenberger)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: extended memory
Message-ID: <1990Dec10.213217.5980@sj.ate.slb.com>
Date: 10 Dec 90 21:32:17 GMT
References: <18374@rasp.eng.cam.ac.uk> <15090024@hpspcoi.HP.COM>
Reply-To: poffen@sj.ate.slb.com (Russ Poffenberger)
Organization: Schlumberger Technologies, San Jose, CA.
Lines: 18

In article <15090024@hpspcoi.HP.COM> dlow@hpspcoi.HP.COM (Danny Low) writes:
>>(Kevin A.Price) 
>>We have a 286 PC/AT with 640k conventional memory and 384k
>>extended memory which is located at address 1 Megabyte.
>
>This does not sound quite right. It looks like you have 1MB of 
>convention memory divided into the usual 640K of available
>and 384K of reserved memory and not 640K of conventional and 384K of

As a matter of fact, this could be right. I used to have a 286 clone that did
this using split memory addressing. They have some intelligence in the address
decoding that allowed the 384K to reside at the 1M mark, and be used as
extended memory.

Russ Poffenberger               DOMAIN: poffen@sj.ate.slb.com
Schlumberger Technologies       UUCP:   {uunet,decwrl,amdahl}!sjsca4!poffen
1601 Technology Drive		CIS:	72401,276
San Jose, Ca. 95110             (408)437-5254