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GATE Computer Science (CS) 2017 Shift 1 Solved Paper

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Question : 59

Total: 65

Consider a RISC machine where each instruction is exactly 4 bytes long. Conditional and unconditional branch instructions use PC-relative addressing mode with Offset specified in bytes to the target location of the branch instruction. Further the Offsetis always with respect to the address of the next instruction in the program sequence. Consider the following instruction sequence.

Instr. No.			Instruction
i	:	add	R2, R3, R4
i+1	:	sub	R5, R6, R7
i+2	:	cmp	R1, R9, R10
i+3	:	beq	R1, Of f set

If the target of the branch instruction is i, then the decimal value of the Offset is _____.

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