Discussion Slides #3 dis3

Discussion Slides #3 dis3 - EE457 Discussion Fall 2007 Lab...

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1 Tony Toghia 1 EE457 Discussion Fall 2007 Lab #1 – Part II and Homework #2 Discussion #3 2 Performance Evaluation • State machine: t execution = # of clock cycles x clock period • Microprocessor: # of clock cycles = # of instructions x CPI • Cutting the amount of work done in a clock by half may not allow the clock rate to be doubled. Why?
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2 3 4 Question #10: Miss Bruin’s Design GT’ MC Initial i <= 0 Load i <= i+1 CA CB Done LT GT LT’ MC’ GT’ MC’ LT’ MC START’ START • What is the design flaw?
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3 5 Another proposed design • Init, Load, and Done states omitted in the figure • Does this address the flaw in Miss Bruin’s design? • Where will i be incremented conditionally and unconditionally? CA CB CBF CAF 6 Questions #1 and #7 • Topics covered the first week • Remember: Moore Machine OFL will consist only of state inputs, Mealy Machine OFL will have state and condition inputs • Mutually Exclusive, All Inclusive
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4 7 Questions #2-4: Tri-state busses
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Discussion Slides #3 dis3 - EE457 Discussion Fall 2007 Lab...

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