All QBasic programs must be in ASCII format. The GW-Basic program
editor can save programs in the format QBasic requires. The file must
be saved with the A option in GW-Basic. Otherwise, GW-Basic compresses
the text of your program into a format that QBasic cannot read.
To convert the file to the QBasic format, do the following:
• Run GW-Basic.
• Use the LOAD command to load your GW-Basic program.
• Use the LIST command to verify your program's contents.
• Use the SAVE command with the A option to save the program. The
A switch causes the program to be saved in ASCII format. For
• Exit GW-Basic by typing SYSTEM at
the GW-Basic prompt.
Once you have saved the program in ASCII format, you can then load the
program in QBasic using the /MBF switch. MBF stands for Microsoft
Binary Format, which is used for floating point numbers and
calculations. It allows you to use your old programs and data without
rewriting your programs or changing your files. For example, type the
following command and press ENTER:
You can determine if your program is in ASCII format by loading the
program into QBasic. If it has strange characters or IBM extended
character set characters, the program is probably not in ASCII format.
End your QBasic session and save the file in ASCII format using the
To run the program in QBasic, from the Run menu, choose Start. If the
program is converted to ASCII, it should run normally.