View source for 000158c0 - 000158e4

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 000158c0: 90830000 lbu r3,0x0000(r4)
 000158c4: 90a2001d lbu r2,0x001d(r5)          loop but conditional?
 000158c8: 00000000 nop
 000158cc: 14620004 bne r3,r2,0x000158e0       
 000158d0: 24840001 addiu r4,r4,0x0001
 000158d4: 90c2007e lbu r2,0x007e(r6)          load octave
 000158d8: acc4001c sw r4,0x001c(r6)           store index to loop from?
 000158dc: a0c2002b sb r2,0x002b(r6)           store loop octave?
 000158e0: 03e00008 jr r31
 000158e4: 00801021 addu r2,r4,r0
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