The ACM Computing Classification System (1991) B.1.0 General B.1.1 Control Design Styles B.1.2 Control Structure Performance Analysis and Design Aids B.1.3 Control Structure Reliability, Testing, and Fault-Tolerance B.1.4 Microprogram Design Aids (D.2.2, D.2.4, D.3.2, D.3.4) B.1.5 Microcode Applications B.1.m Miscellaneous