 | |
| Developer | IBM Cambridge Scientific Center (CSC) |
|---|---|
| OS family | CP/CMS |
| Working state | Historic |
| Initial release | January 1967 |
| Marketing target | IBM mainframe computers |
| Available in | English |
| Platforms | A unique, specially modified IBM System/360 Model 40 |
| Default user interface | Command-line interface |
| License | Proprietary |
| Succeeded by | CP-67 |
| History of IBM mainframe operating systems |
|---|
CP-40 was a research precursor to CP-67, which in turn was part of IBM's then-revolutionary CP[-67]/CMS – a virtual machine/virtual memory time-sharing operating system for the IBM System/360 Model 67, and the parent of IBM's VM family. CP-40 ran multiple instances of client operating systems – particularly CMS, the Cambridge Monitor System,[1] built as part of the same effort. Like CP-67, CP-40 and the first version of CMS were developed by IBM's Cambridge Scientific Center (CSC) staff, working closely with MIT researchers at Project MAC and Lincoln Laboratory. CP-40/CMS production use began in January 1967. CP-40 ran on a unique, specially modified IBM System/360 Model 40.
- ^ Control Program-67/Cambridge Monitor System (GH20-0857-1). IBM. October 1971.