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MOV R0,N // R0 = address of variable N
LDR R0,[R0] // R0 = 4
MOV R1,#0 // R1 = 0; R1 is "i"
MOV R2,#0 // R2 = 0; R2 is "sum"
MOV R3,amount // R3 = base address of array "amount"
MOV R4,#1 // R4 = 1
LOOP: // for(i=0; i<N; i++) sum = sum + amount[i];
ADD R5,R3,R1 // R5 = address of amount[i]
LDR R5,[R5] // R5 = amount[i]
ADD R2,R2,R5 // sum = sum + amount[i]
ADD R1,R1,R4 // i++
CMP R1,R0
BLT LOOP // if i < N goto LOOP
MOV R3,result
STR R2,[R3] // result = sum
HALT
N:
.word 4
amount:
.word 50
.word 200
.word 100
.word 500
result:
.word 0xBADD
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