Get casting unit's misc data

0007a1d4: 3c03800a lui r3,0x800a
0007a1d8: 8c638a54 lw r3,-0x75ac(r3)			load pointer to last units misc. data
0007a1dc: 00000000 nop
0007a1e0: 1060000b beq r3,r0,0x0007a210			branch if first unit?
0007a1e4: 00001021 addu r2,r0,r0
0007a1e8: 3c048009 lui r4,0x8009
0007a1ec: 8c84611c lw r4,0x611c(r4)				
0007a1f0: 90620004 lbu r2,0x0004(r3)			load unit misc. ID?
0007a1f4: 00000000 nop
0007a1f8: 10440005 beq r2,r4,0x0007a210
0007a1fc: 00601021 addu r2,r3,r0
0007a200: 8c630000 lw r3,0x0000(r3)
0007a204: 00000000 nop
0007a208: 1460fff9 bne r3,r0,0x0007a1f0
0007a20c: 00001021 addu r2,r0,r0
0007a210: 03e00008 jr r31
0007a214: 00000000 nop