Message-Id: <s497acdf.028@calderauk.com>
Date: Wed, 17 Dec 1997 10:43:24 +0000
From: Matthias Paul <MPaul AT calderauk DOT com>
To: opendos AT delorie DOT com
Subject: Re: Handles (Was: Performance questions & Re: OD7.02B - Should
	I upgrade to it?)
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On 97/12/16 Mark Aitchison wrote:

>If you specify FILESHIGH and there isn't enough RAM up there for all of
>them, do the file handles that are used *first* or *last* get put into
>the (sometimes faster) conventional memory?
Under COD 7.02 BETA2+ during CONFIG.SYS, there are 5+3 handles in 
low memory, and afterwards additonal handles in low or upper memory, 
depending on free memory. Under older OSes of the family, there have 
been only 5 handles in low memory during CONFIG.SYS, and more (at 
least 3) in low memory afterwards (if not using 3rd party solutions). For 
obscur reasons Windows 3.xx (at least Windows 3.10 and before) requires 
5+3 handles in low memory (however not true for WfW 3.11), and forcing this
memory layout is what unfortunately breaks QEMM s DOS-UP under COD
7.02B2+ (during CONFIG.SYS DOS-UP expects the old 5 handles layout).

Matthias

------------------------------------------------------------
Matthias Paul
eMail: <Matthias DOT Paul AT post DOT rwth-aachen DOT de>
Web: http://www.rhrz.uni-bonn.de/~uzs180/mpdokeng.html