Minicomputer system with an arithmetic control unit integrated on a one-chip semiconductor device
US4087854A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1976 |
| Grant date | May 2, 1978 |
| Priority date | — |
| Expiry date | Aug 30, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F15/7832
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A minicomputer system comprising an arithmetic control unit integrated on a one-chip semiconductor device using n-channel silicon gate E/D MOS technology and a control storage separate from and connected to the arithmetic control unit for storing microinstructions. The arithmetic control unit includes two kinds of read only memories, each having a small memory capacity. The first read only memory stores start addresses of specific microinstructions for phase control, an illegal instruction trap and an initialization trap. The second read only memory stores auxiliary microinstructions to handle operations involving an accumulator, general registers and an instruction register in the arithmetic control unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.