Digital computer system including apparatus for resolving names representing data items and capable of executing instructions belonging to general instruction sets
US4514800A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 1981 |
| Grant date | Apr 30, 1985 |
| Priority date | — |
| Expiry date | May 22, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/4484
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A digital computer system including a memory and a processor. The memory operates in response to memory commands received from the processor. Items of data stored in the memory include instructions to which the processor responds. Each instruction contains an operation code which belongs to one of several sets of operation codes. The meaning of a given operation code is determined by the operation code set to which the instruction belongs. Some of the instructions also contain names representing items of data used in the operation specified by the operation code. The processor includes an operation code decoding system which decodes the operation code as required for the instruction set to which it belongs, a name resolution system for deriving the address of the data item represented by a name from the name using an architectural base address contained in the name resolution system, and a control system which controls the operation of the processor. The processor performs a call operation and a return operation. Only the call operation and the return operation may change the current architectural base address. The memory further contains name table entries associated with the name…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.