The instruction that shifts 8 LSB bits of ECX into the MSB positions of EAX, one by one starting from LSB of ECX is
A. SHLD ECX,EAX,8
B. SHLD EAX,ECX,8
C. SHRD ECX,EAX,8
D. SHRD EAX,ECX,8
Answer:A
The instruction that shifts 8 LSB bits of ECX into the MSB positions of EAX, one by one starting from LSB of ECX is
A. SHLD ECX,EAX,8 B. SHLD EAX,ECX,8 C. SHRD ECX,EAX,8 D. SHRD EAX,ECX,8
Explanation: The SHRD instruction shifts the specified number of bits in the instruction, from lower side (i.e. LSB) of the source operand into the the upper side (i.e. MSB) of the destination operand.