Write and assemble a program to load values into each of reg

Write and assemble a program to load values into each of registers R20 – R24 and then push each of these registers onto the stack. Single-step the program, and examine the stack and the SP register after the execution of each instruction.

Solution

.INCLUDE “M32DEF.INC”

                LDI R20, HIGH(RAMEND)

                OUT SPH, R20

                LDI R20,LOW(RAMEND)

                OUT SPL, R20

                LDI R20, $20

                LDI R21, $31

                LDI R22, $42

                LDI R23, $53

                LDI R24, $64

                PUSH R20

                PUSH R21

                PUSH R22

                PUSH R23

                PUSH R25

L1:        RJMP L1