2017-10-04 18:37:32 +00:00
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REM Virtual DOS Machine (VDM) Default Startup File
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REM NOTE: NTVDM does not use CONFIG.BAT as the default
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REM environment settings file when running a DOS application. To
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REM change the default settings for the VDM, change this file
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REM instead. However, if a DOS Shortcut (PIF) is used, then
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REM the settings found in the PIF file will be used instead.
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REM Echo Output Option
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REM ==================
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REM When starting up a DOS application, by default, no output
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REM text is shown to the user as the application starts
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REM up. To display information from both CONFIG.NT and
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REM AUTOEXEC.NT, use the option, 'echoconfig'.
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REM echoconfig
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REM Command Prompt Option
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REM =====================
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REM If the user returns to the Command Prompt either from a TSR,
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REM or while running a DOS application, by default, VDM runs
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REM COMMAND.COM. To run cmd.exe instead, use the option, 'ntcmdprompt'.
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REM However, if COMMAND.COM cannot be found, VDM will use this option
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REM regardless if it's disabled or not.
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ntcmdprompt
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REM DOS-Only Mode
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REM =============
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REM By default, any DOS application can run another application,
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REM regardless if it's DOS-based or not. To prevent DOS applications
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REM from running non-DOS applications, and therefore possibly preventing
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REM disruption of the TSR, use the option 'dosonly'.
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REM dosonly
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REM Expanded Memory Manager (EMM)
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REM =============================
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REM Syntax = EMM [A=AltRegSets] [B=BaseSegment] [RAM]
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REM
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REM A = Alternative Mapping Register (AltRegSets)
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REM * Determines the Alternative Mapping Register Sets supported by the system.
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REM The supported values goes from 1 to 255.
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REM * The default value is 8.
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REM B = Base Segment
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REM * The default value is 0x4000.
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REM Random Access Memory (RAM)
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REM * If used, then only allocate 64kb address space from the Upper Memory
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REM Block (UMB) for EMM page frames, while allowing the rest (if any) to be
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REM used by NTVDM for loadhigh and devicehigh commands.
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REM * By default, all available and possible UMB will be used for page frames.
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REM
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REM The size of a program's EMM is determined by it's given PIF file. But
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REM if no PIF file is provided, the default settings will be used (_default.pif).
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REM But if the size of the given PIF file is zero, then the EMM will be disabled
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REM and the options below will be ignored.
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REM EMM A=8 B=0x4000 64
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REM Disable PC Speaker Audio
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REM ========================
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REM Disables the playback of PC Speaker Audio.
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REM disablepcspeaker
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REM Misc. Configuration Options
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REM ===========================
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REM dos=high, umb
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REM device=%SystemRoot%\System32\himem.sys
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REM files=40
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