examples
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37
examples/fibo.asm
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37
examples/fibo.asm
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XOR R0 R0 R0
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ADD R0 R0 #7 # n = 7
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XOR R1 R1 R1
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ADD R1 R1 #1 # constante à 1
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XOR R7 R7 R7
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ADD R7 R7 #40 # SP = 40
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STR R0 R7 # on empile n
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CALL fibo # on appelle fibo dessus
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JMP fin # on saute à la fin du programme
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fibo:
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LD R2 R7 # on dépile n
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JSUP R2 R1 suite # si n <= 1, on retourne n (donc on ne fait rien)
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RET
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suite:
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SUB R2 R2 #1
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STR R2 R7 # on empile n - 1
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ADD R7 R7 #1
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SUB R2 R2 #1
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STR R2 R7 # on empile n - 2
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CALL fibo
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LD R2 R7 # on dépile fibo(n-2)
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SUB R7 R7 #1
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LD R3 R7 # on dépile n - 1
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STR R2 R7 # on empile fibo(n-2)
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ADD R7 R7 #1
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STR R3 R7 # on empile n - 1
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CALL fibo
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LD R2 R7 # on dépile fibo(n-1)
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SUB R7 R7 #1
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LD R3 R7 # on dépile fibo(n-2)
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ADD R2 R2 R3
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STR R2 R7 # on empile fibo(n)
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RET
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fin:
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LD R1 R7
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stop:
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JMP stop
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