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1. |
Consider a new instruction named branch -on- bit -set (mnemonic bbs ).The instruction bbs reg pos label jumps to label if bit in position pos of register operand reg is one A register is 32 bits wide and the bits are numbered 0 to 31 bit in the following emuationof this instruction on a processor that does not have bbs implemented temp -----reg and mask Branch to label if temp is non -zero The variable temp is a temporary register For ocrrect emulation the variable mask must be generated by |
A. | mask----0x1< < pos |
B. | mask ----0x ffffffff > > pos |
C. | mask ----pos |
D. | mask ----0xf |
Answer» B. mask ----0x ffffffff > > pos | |