Microsoft KB Archive/31835

Microsoft XENIX Languages Offer Source Compatibility with DOS ID Number: Q31835

3.x 4.x 5.x MS-DOS

Summary: Applications developed for MS-DOS using Microsoft high-level languages can easily be transported to XENIX. The XENIX versions of BASIC, C, COBOL, FORTRAN, Macro Assembler, and Pascal offered by Microsoft are source-language compatible with the MS-DOS versions. The object files produced by FORTRAN Versions 3.3x and 4.x, C Versions 3.x, 4.x, and 5.x, and Pascal Versions 3.3x and 4.x can be used in either operating-system environment, except for FORTRAN object files that access arrays greater than 64K. This flexibility makes it easier to move operating-system-independent subroutine libraries between systems.