Conditional move using a compare instruction generating a condition field
US5991874A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1996 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Jun 6, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/384
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for use in a computer system comprises a first storage area and a circuit, coupled to the first storage area, configured to perform a comparison of a data element A with a data element B. In response to a single instruction, the circuit performs the comparison and outputs a condition field of at least one bits when the comparison of A and B is TRUE, or else the circuit outputs the ones-complement of the condition field when the comparison of A and B is FALSE. The circuit may be used in conjunction with a sequence of instructions to select bits from a first data element and bits from a second data element using the one or more condition field bits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.