The diskette organization used in the Apple II Softcard CP/M and the Apple III Softcard CP/M are identical. This means that files generated on either system is readable by the other. However, the Softcard III CP/M System File does not work correctly on an Apple II, and visa-versa. Some programs were designed with specific hardware in mind and may not work correctly on the Apple III. Several examples are MBASIC, GBASIC, and FORTRAN supplied by Microsoft.