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R.. Spinrad D. Liddle
lTG/SOD. SDD/SO
EI Segundo Palo Alto

Subject Date

Progress Through January 2Q. 1977 January 20, 1977

Processor Archi tecture
Version 1.3 of the OIS Processor Principles of Operation was releasea
for SDD and EOD Review on January 7. It includes complete descrip-
tions of the I/O and Virtual Memory facilities. A final version will
be issued on 14 February.

Critical structural and performance specifi cations for DO were
transmitted to EOD on January 7. Progress continues on design
of the DO breadboard/engineering