Issue No.10 - October (1984 vol.33)
We consider the complexity of the problem of encoding microoperations into the fields of a control word on a horizontally microprogrammed machine, and show it to be NP-complete. The major result of this correspondence is a formalization of the microinstruction encoding problem, which makes the complexity argument straightforward.
NP-completeness, Bit encodings, horizontal microinstructions, microprogramming
V.H. Allan, J. Varghese, "The Complexity of Horizontal Word Encoding in Microprogrammed Machines", IEEE Transactions on Computers, vol.33, no. 10, pp. 938-939, October 1984, doi:10.1109/TC.1984.1676358