Given the AVR Assembly program below written for the ATmega$328$PB microcontroller, fill in

the program $($flash$)$ memory and data memory with appropriate values by hand. For instructions,

list the instruction's mnemonic and replace labels, equates$/$definitions$,$ functions and operations

in operands with their values in hexadecimal form. The first four instructions are entered to

get you started. For values written to locations in data memory, list the $($potentially multiple$)$

values in hexadecimal form at the correct locations.

; define some constants

$.$ EQU STARTVAL $=3$

$.$ EQU ENDVAL $=14$

$.$ EQUSTEP$=4$

; ensure Stack Pointer holds last address in SRAM

LDI R$16,$ HIGH $($RAMEND$)$

DUT SPH$,$ R$16$

LDI R$16,$ L$.$OW $($R$.$AMEND$)$

DUT SPL$,$ R$16$

; load conatanta into GPRa for use

LDI R$16,$ STARTVAL.

LDI R$17,$ STEP

LDI R$18,$ ENDVAL.

PUSH R$16$ ; save R$16\text{'}$s value on stack

RCALL SUMVALS ; call subroutine

POP R$16$ ; restore R$16\text{'}$s value from stack

END: RJMP END ; infinite loop at program's end

; Subroutine repeatedly adds STEP $($R$17)$

; to STARTVAL $($R$16)$ until the sum becomes

; larger than ENDVAL $($R$18).$ Answer that is

; less than or equal to ENDVAL will be held

; in R$19.$

SUMVAL.S :

MOV R$19,$ R$16$ ; store current sum in R$19$

ADD R$16,$ R$17$; add STEP to sum in R$16$

CP R$18,$ R$16$ ; test if ENDVAL $>=$ sum

BRPL SUMVALS ; loop again if ENDVAL $$ sum

RET ; return from subroutine