subsystems/mvdm/config/CONFIG.NT

   1 REM Virtual DOS Machine (VDM) Default Startup File
   2
   3 REM NOTE: NTVDM does not use CONFIG.BAT as the default
   4 REM environment settings file when running a DOS application. To
   5 REM change the default settings for the VDM, change this file
   6 REM instead. However, if a DOS Shortcut (PIF) is used, then
   7 REM the settings found in the PIF file will be used instead.
   8
   9 REM Echo Output Option
  10 REM ==================
  11 REM     When starting up a DOS application, by default, no output
  12 REM     text is shown to the user as the application starts
  13 REM     up. To display information from both CONFIG.NT and
  14 REM     AUTOEXEC.NT, use the option, 'echoconfig'.
  15 REM echoconfig
  16
  17 REM Command Prompt Option
  18 REM =====================
  19 REM     If the user returns to the Command Prompt either from a TSR,
  20 REM     or while running a DOS application, by default, VDM runs
  21 REM     COMMAND.COM. To run cmd.exe instead, use the option, 'ntcmdprompt'.
  22 REM     However, if COMMAND.COM cannot be found, VDM will use this option
  23 REM     regardless if it's disabled or not.
  24 ntcmdprompt
  25
  26 REM DOS-Only Mode
  27 REM =============
  28 REM     By default, any DOS application can run another application,
  29 REM     regardless if it's DOS-based or not. To prevent DOS applications
  30 REM     from running non-DOS applications, and therefore possibly preventing
  31 REM     disruption of the TSR, use the option 'dosonly'.
  32 REM dosonly
  33
  34 REM Expanded Memory Manager (EMM)
  35 REM =============================
  36 REM     Syntax = EMM [A=AltRegSets] [B=BaseSegment] [RAM]
  37 REM
  38 REM     A = Alternative Mapping Register (AltRegSets)
  39 REM         * Determines the Alternative Mapping Register Sets supported by the system.
  40 REM           The supported values goes from 1 to 255.
  41 REM         * The default value is 8.
  42 REM     B = Base Segment
  43 REM         * The default value is 0x4000.
  44 REM     Random Access Memory (RAM)
  45 REM         * If used, then only allocate 64kb address space from the Upper Memory
  46 REM           Block (UMB) for EMM page frames, while allowing the rest (if any) to be
  47 REM           used by NTVDM for loadhigh and devicehigh commands.
  48 REM         * By default, all available and possible UMB will be used for page frames.
  49 REM
  50 REM     The size of a program's EMM is determined by it's given PIF file. But
  51 REM     if no PIF file is provided, the default settings will be used (_default.pif).
  52 REM     But if the size of the given PIF file is zero, then the EMM will be disabled
  53 REM     and the options below will be ignored.
  54 REM EMM A=8 B=0x4000 64
  55
  56 REM Disable PC Speaker Audio
  57 REM ========================
  58 REM     Disables the playback of PC Speaker Audio.
  59 REM disablepcspeaker
  60
  61 REM Misc. Configuration Options
  62 REM ===========================
  63 REM dos=high, umb
  64 REM device=%SystemRoot%\System32\himem.sys
  65 REM files=40