Editing CDC Cyber (section)

===Cyber 18===
The Cyber 18 is a 16-bit minicomputer which was a successor to the [[CDC 1700]] minicomputer.  It was mostly used in real-time environments.  One noteworthy application is as the basis of the 2550—a communications processor used by [[CDC 6000 series]] and Cyber 70/Cyber 170 mainframes.  The 2550 was a product of CDC's Communications Systems Division, in Santa Ana, California (STAOPS).  STAOPS also produced another communication processor (CP), used in networks hosted by IBM mainframes.  This M1000 CP, later renamed C1000, came from an acquisition of Marshall MDM Communications. A three-board set was added to the Cyber 18 to create the 2550.

The Cyber 18 was generally programmed in [[Pascal (programming language)|Pascal]] and [[assembly language]]; [[Fortran|FORTRAN]], [[BASIC]], and [[IBM RPG II|RPG II]] were also available.  Operating systems included RTOS (Real-Time Operating System), MSOS 5 (Mass Storage Operating System), and TIMESHARE 3 ([[time-sharing]] system).

"Cyber 18-17" was just a new name for the System 17, based on the 1784 processor.  Other Cyber 18s (Cyber 18-05, 18-10, 18-20, and 18-30) had [[microcode|microprogrammable]] processors with up to 128K words of memory, four additional general registers, and an enhanced instruction set.  The Cyber 18-30 had dual processors. A special version of the Cyber 18, known as the MP32, that was 32-bit instead of 16-bit was created for the National Security Agency for crypto-analysis work. The MP32 had the Fortran math runtime library package built into its microcode. The Soviet Union tried to buy several of these systems and they were being built when the U.S. Government cancelled the order. The parts for the MP32 were absorbed into the Cyber 18 production. One of the uses of the Cyber 18 was monitoring the Alaskan Pipeline.