Question & Answer: This practice problem is dealing with the shift rotate instructions and C bit. The practice question is to determine the instruction and fi…..

This practice problem is dealing with the shift rotate instructions and C bit. The practice question is to determine the instruction and fill out the table. Then explain what each instruction did with value and enter the correct value in the ACCA, ACCB, and C-Bit(Carry flags). I am using the HCS12 Microcontrollers, and Embedded Systems, 1st Edition with the Freescale: CodeWarrior software and I were not able to connect the textbook to write the answer in the table and explain how I got them. I need help to solve this problem, and it is due today?

Given question: Determine the execution of each instruction to enter the variable into the table and explain the outcome of each instruction that occurred?

Instruction ACCA ACCB C (Carry flag) bit
CLC xx xx
LDD   #$AAC9
ASRA
ASRA
LSLD
RORB

Expert Answer

 

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