INTRODUCTION

The Assembler and the Extended Assembler translate symbolic
source language instrucitons into an object program for execution
on the computer. The source language provides mnemonic machine
operation codes, assembler directing pseudo codes, and symbolic
addressing. The assembled program may be absolute or relo-
catable.

The source program may be assembled as a complete entity or it
may be subdivided into several subprograms (or a main program
and several subroutines), each of which may be assembled separ-
ately. The relocating loader loads the program and Links the
subprograms as required. The Basic Binary Loader or Basic
Binary Disc Loader loads absolute programs.

Input for the Assembler is prepared on paper tape or cards; the Assem-
bler punches the binary program on paper tape in a format acceptable
to the loader.