On the Minimization of the Width of the Control Memory of Microprogrammed Processors
Baer, Koyama · IEEE Transactions on Computers · 1979
A branch and bound method to minimize the width of the control memory of microprogrammed processors is given. Although it is exponential in the worst case, it appears much more effective than previous enumerative solutions. Furthermore, it can lead quickly to near-optimal solutions representing "good engineering" reductions.