Loader Standardization for Overlay Programs

The overlay capability is described for four
of the third generation computer systems: CDC-6000, 
GE-635, IBM-360, and UNIVAC-1108.  A critique of the
first three systems is based on actual experience 
with a large overlaid trajectory simulation program;
a short history and description of this program 
is presented.  A standardization of minimum capabilities
for loaders is recommended so that programs 
which must operate under more than one computer system
may be easily converted and maintained.  A proposal 
that overlay software incorporates a memory occupation
specification concept instead of the conditional 
tree structure is delineated.  This concept provides
more efficient and cost-effective utilization of 
the memory as well as increased flexibility in program structure.

CACM October, 1969

Lanzano, B. C.

loader, overlay, partition, region, segmentation,
linkage, linkage editor, standardization, memory 
utilization, memory occupation, tree structure,
CDC-6000, GE-635, IBM-360, UNIVAC-1108

4.10 4.12 4.19 4.40

CA691001 JB February 15, 1978  4:09 PM

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