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Microprogrammed Control for Computing Systems

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1 Author(s)
G. B. Gerace ; Centro Studi Calcolatrici Elettroniche del Consiglio Nazionale delle Ricerche presso l''Università di Pisa, Pisa, Italy.

The feasibility of a large-scale microprogrammed computer and some variations and extensions of Wilkes' scheme are examined. A general scheme is discussed to improve flexibility and reduce the number of micro-orders through massive use of the conditions for the next micro-order. A variable-cycle timing system that permits the speed of a synchronized computer to approach that of an asynchronous one is presented. Problems and solutions of input-output operations including time sharing and multiprogramming, and some technical problems, are discussed in detail. A particular scheme of the arithmetic unit included in a micro-programmed control unit is presented.

Published in:

IEEE Transactions on Electronic Computers  (Volume:EC-12 ,  Issue: 6 )