Computer Science Fundamentals
Which of the following is a 2-word instruction set?
LDA 2500H
MOV A, B
IN 01H
JMP 2085H
IN 01H
LDA 2500H and JMP 2085H are 3-word instructions. MOV A, B is a 1-word instruction. IN 01H is a 2-word instruction, the first byte specifies the opcode and the second byte specifies the operand.
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