71. | A device employing INTR line for device interrupt puts the CALL instruction on the data bus while |
Answer: (a).INTA is active
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72. | In 8085, which of the following modifies the program counter ? |
Answer: (d).All instructions
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73. | The 2' s complement representation of the decimal value - 15 is |
Answer: (d).10001
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74. | Sign extension is a step in |
Answer: (d).converting a signed integer from one size to another
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75. | In 2' s complement addition, overflow |
Answer: (b).cannot occur when a positive value is added to a negative value
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76. | In the absolute addressing mode |
Answer: (b).the address of the operand is inside the instruction
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77. | Consider the following multiplexer where 10, 11, 12, 13 are four data input lines selected by two address line combinations A1A0 = 00, 01, 10, 11 respectively and f is the output of the multiplexer. EN is the enable input. The function f(x, y, z) implemented by the circuit is : ![]() |
Answer: (a).xyz'
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78. | What are the states of the Auxiliary Carry (AC) and Carry Flag (dCY) after executing the following 8085 program? MVI L, 5DH MVI L, 6BH MOV A, H ADD L |
Answer: (c).AC = 1 and CY = 0
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79. | The performance of a pipelined processor suffers if |
Answer: (d).all of the above
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80. | Horizontal microprogramming : |
Answer: (d).all of the above
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