Apparatus and method for emulating a computer instruction set using a jump table in the host computer
US5406644A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 23, 1988 |
| Grant date | Apr 11, 1995 |
| Priority date | — |
| Expiry date | Nov 23, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/45504
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Data processing means adapted to be controlled by sequential instructions, a substantial number of which comprise an operation code selected from a set of n such codes and a qualifying code selected from a set of m such codes, the data processing means comprising a store having approximately n times m locations with each location corresponding to a consistent combination of operating code and qualifying code and holding a series of instructions corresponding to the said operating code and qualifying code. The qualifying code may be the addressing mode and a jump table of 256.times.256 entries may be employed to access the instruction series.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.