ISPS
Instruction Set Processor Specifications
Barbacci, Carnegie Mellon University, 1979
An operational hardware specification language, the successor to ISPL.
"Instruction Set Processor Specifications", M. R. Barbacci et al, IEEE Transactions on Computers, C-30(1):24-80 (Jan 1981).
Bell, Newell, Siewiorek, Barbacci, 1982?