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assembly_x86
02/18/2026 10:47 PM
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;-------------------------------------------------------------------------------
; 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.
;-------------------------------------------------------------------------------
.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.
;-------------------------------------------------------------------------------
RESET mov.w #__STACK_END,SP ; Initialize stackpointer
StopWDT mov.w #WDTPW|WDTHOLD,&WDTCTL ; Stop watchdog timer
;-------------------------------------------------------------------------------
; Main loop here
;-------------------------------------------------------------------------------
init:
bis.b #01h, &P1DIR ;Set P1.0 (LED) as output
main:
xor.b #01h, &P1OUT ;Toggle LED
mov.w #0FFFFh, R4 ;load R4 with 0x0ffff
delay:
dec.w R4 ;decrement R4
jnz delay ;Repeat until R4=0
jmp main ;Stay in main-loop
;-------------------------------------------------------------------------------
; Stack Pointer definition
;-------------------------------------------------------------------------------
.global __STACK_END
.sect .stack
;-------------------------------------------------------------------------------
; Interrupt Vectors
;-------------------------------------------------------------------------------
.sect ".reset" ; MSP430 RESET Vector
.short RESET
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