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WINSEM2018-19_ECE3004_TH_TT530_VL2018195002653_Reference Material I_Module 2.pdf

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  Processing Unit  –   Data Path Module 2  Content  Register organization   Arithmetic and Logic Unit  Signed addition/Subtraction  Multiplier Architecture  Signed/Unsigned multiplication  Booth Multiplier   Array Multipliers  Restoring and Non-restoring Division  Prof. Shanmugasundaram | SENSE | VIT 2  Introduction to CPU   The operation or task that must perform by CPU are: Fetch Instruction:  The CPU reads an instruction from memory. Interpret Instruction:  The instruction is decoded to determine what action is required. Fetch Data:  The execution of an instruction may require reading data from memory or I/O module. Process data:  The execution of an instruction may require performing some arithmetic or logical operation on data.  Write data:  The result of an execution may require writing data to memory or an I/O module. CPU DESIGN Prof. Shanmugasundaram | SENSE | VIT 3  Register Organization ã  A computer system employs a memory hierarchy. ã  At the highest level of hierarchy, memory is faster, smaller and more expensive. ã  Within the CPU, there is a set of registers which can be treated as a memory in the highest level of hierarchy. Prof. Shanmugasundaram | SENSE | VIT 4
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