Here's how to get 625k Free at the dos prompt,using only MS-DOS !
 First you need a 386 or better , MS-DOS 5.0 , Norton Utilities NDOS.com ,
 and the current versions of EMM386.exe & Himem.sys . 

(They come with Windows 3.1 , and I believe they can be downloaded from any
decent BBs , like this one).

 This is how I set up my C & T 386 sx with 6meg of extended memory



                        Config.sys

 

buffers=2
FILES=8
STACKS=0,0
lastdrive=d:
fcbs=1
DEVICE=C:\sys\HIMEM.SYS
dos=high,umb
DEVICE=C:\sys\EMM386.EXE ram 2000 i=e000-efff i=b000-b7ff frame=e000
devicehigh=c:\sys\mouse.sys /y
SHELL=C:\ndos.com /u /e:128
DEVICEhigh=C:\S\STACKER.COM C:\STACVOL.000
DEVICEHIGH=C:\sys\ansi.sys
@Echo Off


                       autoexec.bat


@echo off
lh c:\prnt\dmp /mx:24 /mxp
c:\sys\umbfiles=44
SET PCPLUS=d:\PCP
LH d:\pct\PC-CACHE.com /WRITE=ON/quiet/sizext=1700
PATH d:\PCT;C:\DOS;c:\ut;c:\sys;d:\acad;C:\S;d:\nu
int13x
c:\sys\flop /f
c:\sys\speedram r:60
prOMPT MS-DOS ver.5.1$_$e[36m$t$_$e[33m$d$_$e[1;31m$P$e[34m$G$e[32m
pcshell
v


                 And here are the results!



Conventional Memory :

  Name                Size in Decimal       Size in Hex
-------------      ---------------------   -------------
  MSDOS             190960      (186.5K)      2E9F0
  MENU                 224      (  0.2K)         E0
  HIMEM               1072      (  1.0K)        430
  EMM386              3232      (  3.2K)        CA0
  NDOS                 512      (  0.5K)        200
  FREE              639392      (624.4K)      9C1A0

Total  FREE :       639392      (624.4K) 

Upper Memory :

  Name                Size in Decimal       Size in Hex
-------------      ---------------------   -------------
  SYSTEM            134736      (131.6K)      20E50
  NDOS                3120      (  3.0K)        C30
  PC-CACHE           15904      ( 15.5K)       3E20
  MOUSE              14816      ( 14.5K)       39E0
  STACKER            41792      ( 40.8K)       A340
  ANSI                4192      (  4.1K)       1060
  FREE               34496      ( 33.7K)       86C0
  FREE               10000      (  9.8K)       2710
  FREE                 272      (  0.3K)        110

Total  FREE :        44768      ( 42.8K) 

Total bytes available to programs (Conventional+Upper) :      684160   (665.2K)
Largest executable program size :                             639184   (624.4K)
Largest available upper memory block :                         44768   ( 42.8K)

   2441216 bytes total EMS memory
   2048000 bytes free EMS memory

   5242880 bytes total contiguous extended memory
         0 bytes available contiguous extended memory
   1026048 bytes available XMS memory
           MS-DOS resident in High Memory Area
  


       I think Microsoft should offer a free upgrade to DOS 5.0 include the new   versions of there extenders , AND a command interpreter such as NDOS , Looks
 like dos 5.1 to me . This could turn most after market memory managers into
 Shelfware! What do you think ?
                                        Harry P. Balz