Stack pointer with post increment/decrement allowing selection from parallel read/write address outputs
US6345353B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2001 |
| Grant date | Feb 5, 2002 |
| Priority date | — |
| Expiry date | Jan 30, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/3814
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The stack pointer is used for generating the next unutilized location in the stack memory device in order to indicate where a current value in the program counter is to be written. The stack pointer also generates a directly preceding location to the next unutilized location in order to read the last value of the program counter that was written to the stack memory device. The stack pointer will select the next unutilized location in the stack memory device for a write operation and the directly preceding location to the next unutilized location in the stack memory device for a read operation. The stack pointer will further perform either a post increment or post decrement operation on the next unutilized location in the stack memory device after execution of a current instruction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.