Method and system for coupling a stack based processor to regist

Details Method and system for coupling a stack based processor to regist Method and system for coupling a stack based processor to regist

1997-06-27

2000-07-11

An, Meng-Ai T.

Electrical computers and digital processing systems: processing

Architecture based instruction processing

712202, 712203, G06F 1500

Patent

active

060887869

ABSTRACT:
A microprocessor capable of performing multimedia and non-multimedia operations provided a plurality of stack based instructions is provided. The microprocessor includes a stack processor coupled to a stack capable of storing values, a register processor coupled to a register file capable of storing values, and a copy-unit having a first port coupled to the stack and a second port coupled to the register file being configured to copy data between the register file and the stack. The microprocessor also includes logic coupled to receive the plurality of stack based instructions from memory, cache, or other storage devices coupled to the microprocessor. The logic is configured to determine which of the plurality of stack based instructions are regular stack instructions and which of the plurality of stack based instructions are extended stack instructions. A stack decoder having a first port coupled to the logic and a second port coupled to the stack processor is configured to decode the regular stack instructions and provide control signals to the stack processor. A copy-unit decoder having a first port coupled to the logic and a second port coupled to the copy-unit is configured to decode extended stack instructions and provide control signals to the copy-unit. Further, a register processor decoder having a first port coupled to the logic and a second port coupled to the register processor is configured to decode extended stack instructions and provide the decoded extended stack instructions to the register processor.

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