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Refer to the four items in table 1.1 that an instruction must specify. What would need to be specified by the MC68000 instruction ADDI.W #9,
Refer to the four items in table 1.1 that an instruction must specify. What would need to be specified by the MC68000 instruction ADDI.W #9, D4 described in the table 1.2?
Which operation? | Move an integer word. |
Where to find the operand? | In data register D4. |
Where to put the result? | In data register D5. |
Where to find the next instruction? | (Implicitly) in the word following the instruction. |
MC68000 Assembly Language | Machine Language |
MOVE.W D4, D5 | 0011 101 000 000 100 |
ADDI.W #9, D2 | 00000110 01 000 010 0000 0000 0000 1001 |
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