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What is the value in R5 after the following instructions are executed in MSP430? (Note: 1234h...

What is the value in R5 after the following instructions are executed in MSP430? (Note: 1234h indicates that it is a hexadecimal number. ) MOV #1234h, R5 SWPB R5 a) 4321 b) 3412 c) 2143h d) 3412h

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Answer #1

MOV #1234h, R5 //R5 contains #1234h

SWPB R5 //This Instruction Swap bytes in register , So 1234 is two bytes : 12 is 1 byte and 34 is 1 byte :

So, bytes will be swapped , It will become 3412h


Option (b) 3412

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