I need help with understanding the steps of this assembly program. Thank you

Data Memory Map Address Offset Data Walk through the assembly program below and fill out the memory map (right). If a value changes during the program, you only need to record the final value. Unless otherwise stated all memory locations contain a value of 0. ;Program for task 1 ;Definitions .EQU top=0x03 .DEF counter=R16 ;Main .CSEG .ORG 0x0000 LDI counter, o LDI R17,1 RJMP Second First: INC R17 INC counter CPI counter, top BRNE First MOV R1, R17 RJMP Third Second: INC R17 INC counter CPI counter, top BRNE Second MOV RO, R17 ADD counter, R17 MOV R2, counter CLR R17 RJMP First Third: ADD R17, counter Data Memory Map Address Offset Data Walk through the assembly program below and fill out the memory map (right). If a value changes during the program, you only need to record the final value. Unless otherwise stated all memory locations contain a value of 0. ;Program for task 1 ;Definitions .EQU top=0x03 .DEF counter=R16 ;Main .CSEG .ORG 0x0000 LDI counter, o LDI R17,1 RJMP Second First: INC R17 INC counter CPI counter, top BRNE First MOV R1, R17 RJMP Third Second: INC R17 INC counter CPI counter, top BRNE Second MOV RO, R17 ADD counter, R17 MOV R2, counter CLR R17 RJMP First Third: ADD R17, counter