8051 INSTRUCTION SET ADDRESSING MODES
ARCHITECTURE OF 8085
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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DJNZ instruction in 8051 will
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Decrement the first operand by 1 and jump to the location identified by second operand if the resulting value is not zero
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Decrement the first operand by 2 and jump to the location identified by second operand if the resulting value is not zero
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Decrement the operand by 1
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Decrement the operand by 2
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Explanation:
Detailed explanation-1: -Explanation: DJNZ is 2-byte instruction. This means jump can be of-128 to +127 locations with respect to PC.
Detailed explanation-2: -MOV instruction takes 1 Machine cycle DJNZ instruction takes 2 Machine cycle.
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