Methods and apparatus for indirect compound VLIW execution...

Details Methods and apparatus for indirect compound VLIW execution... Methods and apparatus for indirect compound VLIW execution...

2007-09-18

2007-09-18

Ellis, Richard L. (Department: 2183)

Electrical computers and digital processing systems: processing

Instruction decoding

Decoding instruction to accommodate plural instruction...

C712S226000

Reexamination Certificate

active

10745267

ABSTRACT:
An VLIW instruction mechanism is described which accesses multiple slot instructions for execution to achieve high levels of selectable parallelism and to make improvements to code density. To this end, the VLIW instruction mechanism includes a short instruction word (SIW) register for holding an SIW. The SIW includes an indication of a slot instruction to execute and a dynamic slot instruction operand which is used by the slot instruction to execute. Further, the VLIW instruction mechanism includes a register for holding slot instructions which are retrieved from VLIW memory. The retrieved slot instructions include a stored operand which is used when executing the retrieved slot instruction. The VLIW instruction mechanism further includes a controller and an execution unit. The controller selects which of the operands are utilized with the retrieved slot instructions. The execution unit executes the retrieved slot instruction with the selected operand.

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patent: 2002/0078320 (2002-06-01), Barry et al.
patent: 2002/0087846 (2002-07-01), Nickolls et al.

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