Shri vishnu engineering college for women:: bhimavaram department of information technology



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ITIIBTechIISemLecCOA
0910-ComputerSystemOverview02
Instruction register The opcode and addressing mode of the current instruction are used to determine which micro-operations to perform during the execute cycle.

Flags: These are needed by the control unit to determine the status of the processor and the outcome of previous ALU operations. For example, for the increment-and-skip-if-zero (ISZ) instruction, the control unit will increment the PC if the zero flag is set.

Control signals from control bus The control bus portion of the system bus provides signals to the control unit.


UNIT-IV
DEPARTMENT OF INFORMATION TECHNOLOGY::SVECW Page 7 The outputs areas follows


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