This is a two-part text about assembly language programming in the VAX/MACRO language. Unlike texts that are concerned solely with the assembly language itself, this addresses the design of assemblers, macroprocessors, and linkers. Part I focuses on the fundamentals of assembly language programming in the VAX/MACRO language. It is aimed at the beginning assembly language programmer, conforming with current ACM recommendations concerning these courses. Part II addresses the same subjects from a systems viewpoint, most especially assembler, macroprocessor, and linker design.