Anatomy of an Assembly System.

by G. H. Mealy

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A description of the GAS (Generalized Assembly System) language and of the organization of the GAS processor. One of the features of GAS is that routines may be defined and added to the assembly system at assembly time. This allows the possibility of changing the syntax or semantics of the source language during assembly. Therefore, the programmer who wishes to change GAS must know how it is constructed. The possibility of this, in any practical sense, is dependent on the organization of the assembly system and on its documentation. The author attempts to provide enough information about GAS to allow modification of this language at assembly time.

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