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.data
v1: .word -1
v2: .word 0xFF
o: .byte 0xFF
.text
lui $8, 0x1001
lw $9, 0($8)
or $4, $0, $9
ori $2,$0,1
syscall
lw $10, 4($8)
or $4, $10, $10
syscall
addi $9, $9, 1
sw $9, 0($8)
addi $10, $10, 1
sw $10, 4($8)
addi $8, $8, 8 # on récupère l'adresse de o
lb $9, 0($8)
or $4, $0, $9
syscall # affiche -1 car il l'étend
lbu $10, 0($8)
or $4, $0, $10
syscall # affiche 255 car il n'est pas signé
ori $2, $0, 10
syscall
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