Homework Answers
For 16 bit register, you should use XOR operation and a 0001001000010000 mask to toggle bits 12,9 ,4.
Explanation:
XOR operation
A B A Xor B
0 0 0
0 1 1
1 0 1
1 1 0
So XOR toggles the bit A when Bit B=1
So if the bit12,bit 8 and bit 4 of the mask is 1 and all other bits are 0, It will toggle bit12,9,4 of the 16 bit register(Note that the bit position of the register is [bit15 bit14 . . . . . . . . . . . . . . .. . .. . bit0]
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For a 16-bit register, you should use the operation and a mask to toggle bits 12,...
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