The registers R4 R5 R6 R7 contain signed byte variables Writ

The registers R4, R5, R6, R7 contain signed byte variables. Write an MSP430 assembly code that corresponds to the below: -1- If (R4 <= R5) go to L1 ... If (R6 > R7) go to L2 ... Part b) Repeat the question above with the difference that the registers contain unsigned byte variables.

Solution

2)

3)

\'call #delay\' will call the delay function. What exactly happening is,
SP - 2 ->SP, PC+2 ->@SP, #delay ->PC

Now in \'ret\' ,
@SP ->PC, SP+2 ->SP