Microinstruction controlled data processing system including micro-instructions with data align control feature
US4317170A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1979 |
| Grant date | Feb 23, 1982 |
| Priority date | — |
| Expiry date | Sep 27, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/34
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a data processing system comprising means for storing a plurality of macroinstructions and data, means for determining a starting address of data participating in practice of a macroinstruction read out from the storing means and the entire length of said data in response to said read-out macroinstruction and reading out said data from said storing means based on the thus determined address and entire length, means for shifting the read-out data by a quantity determined by said macroinstruction and means for masking a part, determined by said macroinstruction, of said shifted data, wherein practice of macroinstructions is controlled by a microinstruction sequence, an align field is disposed for these microinstructions to control said read-out means, shifting means and masking means, said shifting means is arranged so that said shifting quantity is determined in response to said starting address and said align field, and means for putting out mask pattern signals indicating the position of data to be masked in response to said entire length of data, said starting address and said align field is disposed in said masking means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.