Microsoft Pascal

Microsoft Pascal is a discontinued implementation of the Pascal programming language that Microsoft produced for compiling programs under MS-DOS and Xenix and, in later versions, under OS/2, where it could only generate 16-bit programs. Version 1.0 appeared in 1980 and the last release, version 4.0, came in 1988. It was sold as a professional development product at around 300 dollars and followed the ISO Pascal standard. In 1988 Microsoft replaced it with QuickPascal, a much cheaper tool aimed at competing with Borland's Turbo Pascal, which unlike Microsoft Pascal was source and binary compatible with Turbo Pascal's unit libraries and moved away from the OBJ file format and LINK and LIB tool set shared with Microsoft's other compilers.