Executing stack-based instructions within a data processing...

Details Executing stack-based instructions within a data processing... Executing stack-based instructions within a data processing...

2005-12-20

2005-12-20

Tsai, Henry W. H. (Department: 2183)

Electrical computers and digital processing systems: processing

Architecture based instruction processing

Stack based computer

C712S220000

Reexamination Certificate

active

06978358

ABSTRACT:
A data processor comprises a register bank containing a plurality of “n” bit registers for storing data items, a set of registers within the register bank being allocatable to hold stack data items from a portion of the stack, and each register in the set storing as an n-bit value stack data items of the first or second type. An arithmetic logic unit executes operations upon data items held in the registers and a decoder decodes a stack-based instruction to specify a number of operations to be executed by the arithmetic logic unit upon one or more stack data items held in predetermined registers in the set. Further, a stack controller is arranged to control movement of stack data items between the stack and the set of registers, and is responsive to the decoder causing one or more stack data items to be held in the predetermined registers.

REFERENCES:
patent: 5634118 (1997-05-01), Blomgren
patent: 5687336 (1997-11-01), Shen et al.
patent: 6332215 (2001-12-01), Patel et al.

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