Quiz 6.1

r4 = 0x8100, r5 unchanged r4 = 0x8101, r5 = 0x0001 r4 = 0x0003, r5 = 0x0001 r4 = 0x0003, r5 = 0x0004 r4 = 0x0003, r5 = 0x8101 r4 = 0x0006, r5 = 0x8101 r4 = 0x0006, r5 = 0x8103 r4 = 0x0006, r5 = 0x0004

You can play with this program below, and see it yourself. Just remember that #tab1 is 0x4400 on the MSP430F5529.

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MSP430 Assembler Code Template for use with TI Code Composer Studio

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

tab1:

.byte 1,2

     		.byte 3,4
     		.byte 5,6
     		.byte 7,8

tab2: .word tab1+0

     		.word tab1+1
     		.word tab1+2
     		.word tab1+3
     		.word tab1+4
     		.word tab1+5
     		.word tab1+6
     		.word tab1+7
           

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           .def    RESET                   ; Export program entry-point to
                                           ; make it known to linker.

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           .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.

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RESET mov.w #__STACK_END,SP  ; Initialize stackpointer StopWDT mov.w #WDTPW|WDTHOLD,&WDTCTL  ; Stop watchdog timer

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Main loop here

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mov.w #tab1,r4 mov.b @r4+,r5 mov.w #3,r4 mov.b tab1(r4),r5 mov.w tab2(r4),r5 add.w r4,r4 mov.w tab2(r4),r5 mov.b @r5,r5 jmp $

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Stack Pointer definition

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           .global __STACK_END
           .sect   .stack
           

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Interrupt Vectors

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           .sect   ".reset"                ; MSP430 RESET Vector
           .short  RESET
           

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