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Questions and Answers
What is the opcode for the instruction 'INC DH'?
What is the opcode for the instruction 'INC DH'?
- 11111111
- 11111101
- 11111110 (correct)
- 11111100
For an 8-bit operand, what is the binary representation of the opcode for 'INC BYTE PTR [SI – 4]'?
For an 8-bit operand, what is the binary representation of the opcode for 'INC BYTE PTR [SI – 4]'?
- 11111100
- 11111110
- 11111111
- 11111101 (correct)
In the instruction encoding of 'INC BYTE PTR [SI – 4]', which mod is used for shortened encoding?
In the instruction encoding of 'INC BYTE PTR [SI – 4]', which mod is used for shortened encoding?
- mod = 10 (correct)
- mod = 00
- mod = 11
- mod = 01
What is the resulting instruction encoding for 'INC BYTE PTR [SI – 4]' when mod is 10?
What is the resulting instruction encoding for 'INC BYTE PTR [SI – 4]' when mod is 10?
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When the constant is encoded as a signed 8-bit value, how many bytes are included in the instruction encoding for 'INC BYTE PTR [SI – 4]'?
When the constant is encoded as a signed 8-bit value, how many bytes are included in the instruction encoding for 'INC BYTE PTR [SI – 4]'?
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