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Which of the following is correct about the SBIS instruction?

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in Microcontroller by (14.6k points)
Which of the following is correct about the SBIS instruction?

(a) it is used to monitor status of bit in I/O register

(b) it is a byte oriented instruction

(c) It is a 4 byte instruction

(d) all of the mentioned

I got this question in exam.

The doubt is from I/O Port Programming and Addressing Modes in section AVR Microcontroller of Microcontroller

1 Answer

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by (24.2k points)
Right choice is (a) it is used to monitor status of bit in I/O register

To explain I would say: SBIS (Skip if Bit in I/O register Set) is used to check status of bit in I/O register. If the bit mentioned in the instruction is SET or HIGH then the controller will skip the immediate next instruction.

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