;-------------------------------------------------------------------------------

; MSP430 Assembler Code Template for use with TI Code Composer Studio

;

;

;-------------------------------------------------------------------------------

.cdecls C,LIST,"msp430.h" ; Include device header file

;-------------------------------------------------------------------------------

.def RESET ; Export program entry-point to

; make it known to linker.

;-------------------------------------------------------------------------------

.data ; RAM STARTS AT 0x0200

varW: .word 0x4444, 0x5555 ;

varB: .byte 0x77, 0x66 ;

array: .space 10 ;

.text ; Assemble into program memory.

.retain ; Override ELF conditional linking

; and retain current section.

.retainrefs ; And retain any sections that have

; references to current section.

symcon1: .set 0x0001 ;

const: .word 0x1000, 0x2000, 0x3000 ;

INIT_STACK: .set 0x400 ;0x400 = 0x03FE+2, 0x03FE = RAM BOTTOM

;-------------------------------------------------------------------------------

RESET mov.w #__STACK_END,SP ; Initialize stackpointer

StopWDT mov.w #WDTPW|WDTHOLD,&WDTCTL ; Stop watchdog timer

;-------------------------------------------------------------------------------

; Main loop here

;-------------------------------------------------------------------------------

_main:

mov.w #INIT_STACK,SP ; initialize stack pointer

mov.w #WDTPW+WDTHOLD,&WDTCTL ; stop watchdog timer

mov.w #0x5555, R4 ;

mov.w &varW, R4 ;

sub.w &varW+2, R4 ;

;CHECKPOINT 1

mov.w R4, &varW+2 ;

mov.w &varW+4, R5

;CHECKPOINT 2 ;

add.b &varB, R5 ;

;CHECKPOINT 3

mov.w #0xFFFF, &const ;

clr.w R14 ;

L1:

mov.w R14, array(R14)

incd.w R14

cmp.w #8,R14

jne L1

;CHECKPOINT 4

Loop: jmp Loop

;-------------------------------------------------------------------------------

; Stack Pointer definition

;-------------------------------------------------------------------------------

.global __STACK_END

.sect .stack

;-------------------------------------------------------------------------------

; Interrupt Vectors

;-------------------------------------------------------------------------------

.sect ".reset" ; MSP430 RESET Vector

.short RESET

a) What memory address (in hex) is yarW stored? b) What memory address (in hex) is varB stored? c) What memory address (in hex) is const+4 stored? d) What is the value of R4 (in decimal) at CHECKPOINT 1? e) What is the value of R5 (in hex) at CHECKPOINT 2? f What is the value of the memory address (16 bits) that &varW+4 points to? g) What is the value of R5 (in hex) at CHECKPOINT 3? h) What is the significance of the byte operator in add.b, specifically, how did it impact the result of question 7? what is the result of the instruction "mov.w #0xFFFF, &const"? j) What are the values of the array at CHECKPOINT 4? k) The instruction "ineL1" is Ox23FB in machine code. If 23 is the op-code/C, why are the last two bits "FB"? a) What memory address (in hex) is yarW stored? b) What memory address (in hex) is varB stored? c) What memory address (in hex) is const+4 stored? d) What is the value of R4 (in decimal) at CHECKPOINT 1? e) What is the value of R5 (in hex) at CHECKPOINT 2? f What is the value of the memory address (16 bits) that &varW+4 points to? g) What is the value of R5 (in hex) at CHECKPOINT 3? h) What is the significance of the byte operator in add.b, specifically, how did it impact the result of question 7? what is the result of the instruction "mov.w #0xFFFF, &const"? j) What are the values of the array at CHECKPOINT 4? k) The instruction "ineL1" is Ox23FB in machine code. If 23 is the op-code/C, why are the last two bits "FB