Q35247: QB.EXE "Bad File Mode" if First Character Extended ASCII

Article: Q35247
Product(s): See article
Version(s): 4.00 4.00b 4.50
Operating System(s): MS-DOS
Keyword(s): ENDUSER | | mspl13_basic
Last Modified: 13-DEC-1989

The error "Bad File Mode" will occur while opening or loading a
document file in the QB.EXE editor if an extended ASCII character is
the very first character in the file. To avoid this error, put a space
or a blank line before the extended ASCII character so that it is not
the first character in the file. This error does not occur in the
QB.EXE editor which comes with Microsoft QuickBASIC Version 4.50 or in
the QBX.EXE environment that comes with Microsoft BASIC PDS Version
7.00.

In the QB.EXE editor in QuickBASIC Versions 2.00, 2.01, and 3.00,
extended ASCII characters are not allowed within the first 80 bytes of
the loaded file. (The same is true for QB87.EXE in Version 3.00.)

Extended ASCII bytes have values from 128 to 255.

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