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Computer system architecture BY: DRISHTI BHALLA BTECH CSE 1838

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Page 1: Computer System Architecture - BUN instruction

Computer system architecture BY: DRISHTI BHALLA

BTECH CSE1838

Page 2: Computer System Architecture - BUN instruction

BUN INSTRUCTION1. Direct

2. Indirect

Page 3: Computer System Architecture - BUN instruction

• BUN

• Opcode =8

PC <- AR

• BUN_I

• Opcode =9

AR <- Main[AR]

PC <- AR

Page 4: Computer System Architecture - BUN instruction

BEFORE

EXECUTION…

DIRECT :

AC=A937

PC=022

Main[AR]=082

Page 5: Computer System Architecture - BUN instruction
Page 6: Computer System Architecture - BUN instruction

AFTER EXECUTION…

Page 7: Computer System Architecture - BUN instruction
Page 8: Computer System Architecture - BUN instruction

BEFORE EXECUTION…INDIRECT :

AC=A937

PC=022

Main[AR]=298

Main[298]=B8F2

Page 9: Computer System Architecture - BUN instruction
Page 10: Computer System Architecture - BUN instruction

AFTER EXECUTION…

Page 11: Computer System Architecture - BUN instruction
Page 12: Computer System Architecture - BUN instruction

THANK YOU !!!!


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