Risc processing unit which selectively isolates register windows by indicating usage of adjacent register windows in status register
US5159680A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1991 |
| Grant date | Oct 27, 1992 |
| Priority date | — |
| Expiry date | Oct 25, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/30127
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An integer processing unit for a reduced instruction set computer having a plurality of registers arranged in groups referred to as register windows, each window register group including a number of input registers, a similar number of output registers, and a number of local registers, the register window groups being physically arranged so the input registers of each group are the same physical register as the output registers of the next adjacent register window group thereby forming one large interconnected ring of register window groups, an arrangement for designating the register window group presently active, and an arrangement for designating register window groups which are not available for use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.