Pentium block diagram
Spring 2004. Pentium structure. The integer pipelines. Two pipelines called u and vFive stages per pipelineInstruction fetchInstruction decoding 1Instruction decoding 2ExecutionRegister writebackFunctionalityU can do all instructions including emulating complex instructions from microcodeV can do only simple integer instructions and the FXCH.
Pentium block diagram
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Presentation Transcript
1. Spring 2004 Pentium structure Pentium block diagram Data path sizes
Registers 32
Internal paths 128 to 256
Cache line size 32 bytes
Cache size 8 Kb each
Data bus - 64
2. Spring 2004 Pentium structure The integer pipelines Two pipelines called u and v
Five stages per pipeline
Instruction fetch
Instruction decoding 1
Instruction decoding 2
Execution
Register writeback
Functionality
U can do all instructions including emulating complex instructions from microcode
V can do only simple integer instructions and the FXCH