Running WordStar in Modern Platforms
WordStar version 3.x used the MS-DOS File control block (FCB) interface, an early data structure for file input/output which was based closely on CP/M's file input/output functions. The provision of the FCB interface was intended to simplify the porting of (assembly language) programs from CP/M to (the then-new) MS-DOS. When MS-DOS adopted the Xenix-like file interface of file handles, FCBs became a legacy interface supported for backward compatibility. Because FCB compatibility has not been maintained, WordStar 3.x will not function properly on modern versions of Windows. In particular, WordStar 3.x cannot save files. One work-around is to use the DOSEMU emulator on Linux, which correctly implements the FCB interface. (The DOSBox emulator does not, even on Linux.) WordStar 4.0 does not have this problem because it uses the newer MS-DOS interface for input/output. (OS/2 can run WordStar in a DOS session.)
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