Can you write under this template:

; File: HA$5-$main.s

; Student Name:

EXPORT main ; this line is needed to interface with init.s

IMPORT GetCh ; Input one ASCII character from the UART #$1$ window $($from keyboard$)$

IMPORT PutCh ; Output one ASCII character to the UART #$1$ window

IMPORT PutCRLF ; Output CR and LF to the UART #$1$ window

IMPORT UDivMod ; Perform unsigned division to obtain quotient and remainder

IMPORT GetDec ; Input a signed number from the UART #$1$ window

IMPORT PutDec ; Output a signed number to the UART #$1$ window

IMPORT GetStr ; Input a CR$-$terminated ASCII string from the UART #$1$ window

IMPORT PutStr ; Output null$-$terminated ASCII string to the UART #$1$ window

AREA MyCode, CODE, READONLY

ALIGN

main

PUSH $\{$LR$\}$

POP $\{$PC$\}$

ALIGN

END ; end of source program in this file

This is the reference that you can reviews for the Calculation B

; File: HA$4-$main.s

; Student's Name:

; This file needs to be in a Keil version $5$ project, together with file init.s

; This is an initial demo program for HA$4,$ which you need to change to complete HA$4$

; All future CS $238$ Home Assignments, will have similar but different files,

; like HA$5-$main.s$,$ HA$6-$main.s$,$ etc.

; Executable code in HAx$-$main.s files should start at label main

EXPORT main ; this line is needed to interface with init.s

; Usable utility functions defined in file init.s

; Importing any label from another source file is necessary

; in order to use that label in this source file

IMPORT GetCh ; Input one ASCII character from the UART #$1$ window $($from keyboard$)$

IMPORT PutCh ; Output one ASCII character to the UART #$1$ window

IMPORT PutCRLF ; Output CR and LF to the UART #$1$ window

IMPORT UDivMod ; Perform unsigned division to obtain quotient and remainder

IMPORT GetDec ; Input a signed number from the UART #$1$ window

IMPORT PutDec ; Output a signed number to the UART #$1$ window

IMPORT GetStr ; Input a CR$-$terminated ASCII string from the UART #$1$ window

IMPORT PutStr ; Output null$-$terminated ASCII string to the UART #$1$ window

AREA MyCode, CODE, READONLY

ALIGN ; highly recommended to start and end any area with ALIGN

; Start of executable code is at following label: main

main

;$--------------------$ START OF MODIFIABLE CODE $----------------------$

PUSH $\{$LR$\}$ ; save return address

; Prompt for the number of terms n

LDR R$0,=$Prompt$1$

BL PutStr ; display prompt for number of terms

BL GetDec ; read number into R$0$

MOV R$1,$ R$0$ ; store input number in R$1$

; Calculate the sum using the formula: n $*($n $+1)/2$

ADD R$2,$ R$1,$ #$1$ ; R$2=$ n $+1$

MUL R$2,$ R$2,$ R$1$ ; R$2=$ n $*($n $+1)$

; Divide by $2$ to get the sum

MOV R$0,$ R$2$ ; Move product $($n $*($n $+1))$ to R$0$ for division

MOV R$1,$ #$2$ ; R$3=2$

BL UDivMod ; R$0=$ quotient $($R$2/2),$ R$1=$ remainder $($ignored$)$

; Output the result

LDR R$0,=$ResultMsg

BL PutStr ; display result message

MOV R$0,$ R$1$ ; move result to r$0$

BL PutDec ; display result

; Final message

LDR R$0,=$ByeMsg

BL PutStr ; display goodbye message

POP $\{$PC$\}$ ; return from main

; Some commonly used ASCII codes

CR EQU $0$x$0$D ; Carriage Return $($to move cursor to beginning of current line$)$

LF EQU $0$x$0$A ; Line Feed $($to move cursor to same column of next line$)$

; The following data items are in the CODE area,

; so they are all READONLY $($i$.$e$.$ cannot be modified at run$-$time$),$

; but they can be initialized at assembly$-$time to any value

Prompt$1$ DCB "Please enter the number of terms in your series: $",0$

ResultMsg DCB "The sum of your series is $",0$

ByeMsg DCB "Bye!", $0$

ALIGN

; The following data items are in the DATA area,

; so they are all READWRITE $($i$.$e$.$ can be modified at run$-$time$),$

; but are automatically initialized at assembly$-$time to zeroes

AREA MyData, DATA, READWRITE

ALIGN

MaxName EQU $1000$ ; your name better be within $1000$ characters :$)$

Name SPACE MaxName $+1$ ; storage space for name $($and NULL byte at end$)$

Value SPACE $4$ ; $4$ bytes for storing input number

;$--------------------$ END OF MODIFIABLE CODE $----------------------$

ALIGN

END ; end of source program in this file