Rockwell Automation Allen-Bradley ControlLogix 1756-MVI Programming Reference Manual page 136

6-12 Programming the MVI Module
Publication 1756-RM004B-EN-P - October 2000
2. MVI users who do not currently have the updated autoexec.bat
file, yet wish to take advantage of an MVIEXEC.bat file, should
create a new ROMdisk image with the updated autoexec.bat
listed below and download the new image to the ROMdisk.
Then they must create their MVIEXEC.bat file and download it to
the C: drive.
The following is the autoexec.bat file that looks for MVIEXEC.bat on
the C: drive
path a:\;a:\dos
REM *************************************************
REM * The following line checks the C: drive for
REM * the file MVIEXEC.BAT. If the file exists,
REM * control is passed to the MVIEXEC.BAT file.
REM **************************************************
if exist c:\mviexec.bat goto mviexec
goto end
REM **************************************************
REM * Note: If the C: drive or the file MVIEXEC.BAT
REM * is not present, the command has no effect. Any
REM * lines in this batch file following the call to
REM * MVIEXEC.BAT will not be executed.
REM **************************************************
:mviexec
c:
mviexec.bat
goto end
:end