From: garyh AT agora DOT rdrop DOT com (Gary Hanson)
Subject: Insufficient memory w/ QDPMI & djgpp?
To: djgpp AT sun DOT soe DOT clarkson DOT edu
Date: Sun, 24 Jul 1994 23:06:24 -0700 (PDT)


I've recently been buying some modern software for my ancient 386dx system;
Stacker v4, and QEMM v7.04. Stacker has worked fine, but I'm having a
problem getting QEMM to co-exist with djgpp. I've seen various messages on
the list about QEMM and DPMI before, but I didn't pay much attention to
them. The first problem was that QDPMI sets up (only) a 1 MB default vm swap
file, which limits djgpp somewhat :-) That one was easy to fix. Now, trying
to run a djgpp-compiled version of djpeg, I get the message:

  C:\TMP djpeg -gif -nodither scene.jpg >scene.gif

  DPMI: Not enough memory (0x00520000 bytes).
  Insufficient memory (case 3)

Okay, let's see what go32 has available:

  C:\TMP go32
  go32 version 1.11.maint5 Copyright (C) 1993 DJ Delorie
  Lowest version I can run is 1.08
  go32.exe usage: go32 [-d {debugger}] [{program} [{options} . . . ]]
  go32.exe build time was Sun May 01 17:42:22 1994
  DPMI memory available: 5076 Kb
  Swap space available: 20000 Kb

Yes, 5076 KB < 0x520000 bytes, but I thought the whole point of virtual
memory was to eliminate these kinds of hassles. I was able to work around
the problem in this case by cutting the size of my disk cache to free up
more memory, but the question is: what kinds of incantations to I have
to tell to QEMM / QDPMI to eliminate this problem? Or, is 'set go32=nodpmi'
the best answer? (I haven't tried nodpmi yet.)

I looked through various QEMM and djgpp docs, but was unable to come up
with a solution. Further information (perhaps useful to the knowlegeable
and/or fanatic) is provided below...

  --Gary Hanson   Intel SSD    garyh AT agora DOT rdrop DOT com

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
  C:\TMP qemm summary
 
  Current Mode               = ON
  Expanded Memory Available  = 5264K
  Page Frame Address         = E000H

  Expanded memory is being used.

  C:\TMP qemm mem

                        Unavailable  Converted
                Initial   to QEMM     by QEMM    Leaving
  Conventional:    640K    -    0K    -    0K    =  640K
  Extended:       8192K    -    0K    - 8192K    =    0K
  Expanded:          0K    -    0K    + 7888K    = 7888K
  High RAM:          0K    -    0K    +  152K    =  152K
                 ------     ------     ------     ------
     TOTAL:       8832K    -    0K    -  152K    = 8680K

                     152K QEMM Overhead
      Code & Data:    112K     Maps:             0K
      Tasks:           18K     Mapped ROM:       4K
      DMA Buffer:      12K     Unassigned:       6K
            0.8K Conventional Memory Overhead

  C:\TMP cat /autoexec.bat
  @REM  THE CHECK LINE BELOW PROVIDES ADDITIONAL SAFETY FOR STACKER DRIVES.
  @REM  PLEASE DO NOT REMOVE IT.
  @C:\STACKER\CHECK /WP
  @ECHO OFF
  SET BLASTER=A220 D1 I7 T2
  PROMPT $e[0;40;32m$p $e[37m
  PATH C:\QEMM;c:\bin;c:\djg\bin;C:\DOS;c:\chinese;c:\windows;C:\STACKER;
  SET TEMP=D:
  set TMPDIR=d:/tmp
  set GO32TMP=d:/tmp
  set GO32=driver c:\djg\drivers\stdega.grn gw 640 gh 350 tw 80 th 25 ansi
  set MAKESTARTUP=c:\djg\bin\startup.mk
  loadfont \bin\thindemo.f14
  call c:\djg\bin\setdjgpp c:/djg c:\djg

  C:\TMP cat /config.sys
  DEVICE=C:\QEMM\DOSDATA.SYS
  DEVICE=C:\QEMM\QEMM386.SYS RAM R:3
  DEVICE=C:\QEMM\DOS-UP.SYS @C:\QEMM\DOS-UP.DAT
  DEVICE=C:\QEMM\LOADHI.SYS /R:1 /SIZE=8592 C:\QEMM\QDPMI.SYS
         SWAPFILE=d:DPMI.SWP SWAPSIZE=20000   [line edited for length --GH]
  DOS=HIGH UMB
  DEVICE=C:\QEMM\LOADHI.SYS /R:2 /SIZE=68176 C:\STACKER\STACKER.COM
  DEVICE=C:\STACKER\SSWAP.COM
  DEVICE=C:\QEMM\LOADHI.SYS /R:1 /SIZE=14032 C:\DOS\SETVER.EXE
  DEVICE=C:\QEMM\LOADHI.SYS /R:1 /SIZE=5328 C:\WINDOWS\ega.sys
  DEVICE=c:\qemm\loadhi.sys /r:1 /size=3728 c:\nansi.sys /s
  FILES=30
  buffers=10
  STACKS=9,256
  SHELL=c:\command.com c:\ /e:1000 /p
  DEVICE=C:\QEMM\LOADHI.SYS /R:2 /SIZE=50864 C:\HYPERDKX.EXE c:2048 h vf s xt:+
  DEVICE=C:\QEMM\LOADHI.SYS /R:1 /SIZE=7184 C:\SOUNDMAN\SMG.SYS /S:220 /V:33

  C:\TMP