Implementation of Pascal on an 8080 microcomputer

With a portable Pascal compiler as a start, the possibility was created to develop programs in Pascal for an 8080 microcomputer. The compiler was installed on a DEC 10 and generated an intermediate code which was interpreted on the microcomputer. The possibility was created to give the programmer access to the file oriented monitor system and predefined 8080-machine-code routines. The interpreter and the necessary monitor routines needed about 7k of memory bits. The work was done at the Technische Hogeschool Twente within the Department of Digital Technics from October 1976 until March 1977. The next pages give a brief review of the most important decisions taken during the implementation.