Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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     Error: A2040
     Operands must be in same segment, or one constant
 
     The subtraction operator was used incorrectly. For instance, a
     memory operand in the code segment cannot be subtracted from a
     memory operand in the data segment.
                                    -♦-