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Message-Id: <201003251257.o2PCvkHE013522@mr2.ash.ops.us.uu.net>
Date: Thu, 25 Mar 2010 08:56:16 -0400 (New York)
X-Mailer: 4DOS v8.00 SEND.BTM 07-10-09
From: Gary Welles <gary AT wellesway DOT com>
To: OpenDos <opendos AT delorie DOT com>
Subject: 256Mb Extender Problems
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Reply-To: opendos AT delorie DOT com

I recently increased memory to 256Mb, only to encounter DOS 
extender problems (details below).  CLOAKING reported "Memory 
configuration too large", QDPMI "Paging Violation" and GO32 
hung without complaint.

On the verge of asking your help, I discovered a fix by 
excluding up to three 4Kb blocks from QEMM386's management:

NoUseRAM=262124K-256M ; 4K for CLOAKING v2.01
                      ; 8K for GO32 v1.12.special1
                      ;12K for QDPMI v1.10

While I'm not desperate to reclaim the 12Kb of my 256Mb, 
someone here might know what's going on or find this 
information useful.

-- Gary

C:\>cloaking -v
CLOAKING.EXE v2.01 - Cloaking API Driver
Copyright (c) 1993-98 Network Associates, Inc.
All rights reserved.

Memory configuration too large.

C:\>zip -h

QDPMI: Memory Paging Violation: Illegal Page Reference [PTE=0000-0000h]
       [CR2=00C1-95E0h at 0020h:0000-67B4h]

QDPMI: Unrecoverable Exception: 000Eh at 0020h:0000-67B4h.  
Error Code = 0002h

GO32=nodpmi

C:\>go32
go32 version 1.12.special1 Copyright (C) 1994 DJ Delorie
Lowest version I can run is 1.08
go32.exe usage: go32 [-d {debugger}] [{program} [{options} . . . ]]
go32.exe build time was Wed Jul 27 12:32:37 1994
VCPI (Expanded) memory available: 16304 Kb
Swap space available: 131040 Kb