qtspim

问题 I'm trying to compute (a * c) - (b / d), and so far my assembly code is: .data A: .word 5 B: .word 6 C: .word 3 D: .word 2 .text lw $t0, A lw $t1, C mul $t0, $t0, $t1 lw $t1, B lw $t2, D div $t1, $t1, $t2 sub $t0, $t0, $t1 li $v0, 1 move $a0, $t0 syscall li $v0, 10 syscall But when I run it, I get the error. I am new to QTSpim and assembly so I would appreciate some help if possible. Thank you! edit: the exact error is: "Instruction references undefined symbol at 0x00400014 [0x00400014]