00012d40 - 00012e78
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r4 = audio byte ID r5 = ? 00012d40: 3c038003 lui r3,0x8003 00012d44: 8c632a60 lw r3,0x2a60(r3) #load MUS pointer 00012d48: 00004821 addu r9,r0,r0 00012d4c: 00005021 addu r10,r0,r0 00012d50: 34070001 ori r7,r0,0x0001 00012d54: 34080008 ori r8,r0,0x0008 00012d58: 246600b8 addiu r6,r3,0x00b8 #pointer + 0xb8 (skips header information) 00012d5c: 246300ec addiu r3,r3,0x00ec #P + 0xec (?) 00012d60: 94c20000 lhu r2,0x0000(r6) "has sound"? 00012d64: 00000000 nop 00012d68: 30420001 andi r2,r2,0x0001 00012d6c: 10400009 beq r2,r0,0x00012d94 #branch if flag 1 not enabled? 00012d70: 2508ffff addiu r8,r8,0xffff #-1 00012d74: 8c62ffd4 lw r2,-0x002c(r3) #sound effect in current channel 00012d78: 00000000 nop 00012d7c: 14440005 bne r2,r4,0x00012d94 #branch if sound effect in channel != input 00012d80: 00000000 nop 00012d84: 8c620000 lw r2,0x0000(r3) 00012d88: 01475025 or r10,r10,r7 #r10 = flags for all channels dedicated to sound effect ID 00012d8c: a4c00000 sh r0,0x0000(r6) #store 0 here (sound effect found?) 00012d90: 01224825 or r9,r9,r2 #bitflag combine r9 and r2 00012d94: 00073840 sll r7,r7,0x01 #next flag to append to r10? 00012d98: 24630160 addiu r3,r3,0x0160 #next channel 00012d9c: 1500fff0 bne r8,r0,0x00012d60 #loop 8 times 00012da0: 24c60160 addiu r6,r6,0x0160 #next channel 00012da4: 34020006 ori r2,r0,0x0006 00012da8: 00452023 subu r4,r2,r5 #r4 = 6 - r5 00012dac: 34020020 ori r2,r0,0x0020 00012db0: 00451023 subu r2,r2,r5 #r2 = 0x20 - r5 00012db4: 2403ffff addiu r3,r0,0xffff #0xffffffff 00012db8: 00436006 srlv r12,r3,r2 #r12 = above divided by 2^(32 - r5) (leave r5 bitflags?) 00012dbc: 008c3804 sllv r7,r12,r4 #r7 = above multiplied by 2^(6 - r5) (leave r5 bitflags, between bitflag range 6 + r5 - 6 (num channels check?) 00012dc0: 00041040 sll r2,r4,0x01 #2 * r4 00012dc4: 00441021 addu r2,r2,r4 #3 * 00012dc8: 00021080 sll r2,r2,0x02 #0xc * r4 00012dcc: 00441023 subu r2,r2,r4 #0xb * r4 00012dd0: 00021140 sll r2,r2,0x05 #0x160 * (6 - r5) (space for channels expected to be used...? 00012dd4: 3c038003 lui r3,0x8003 00012dd8: 8c632a60 lw r3,0x2a60(r3) #MUS pointer 00012ddc: 244200b8 addiu r2,r2,0x00b8 #num channels + 0xb8 00012de0: 3c018003 lui r1,0x8003 00012de4: ac2a2a10 sw r10,0x2a10(r1) #store bitflags for all channels dedicated to input sound effect 00012de8: 3c018003 lui r1,0x8003 00012dec: ac292a14 sw r9,0x2a14(r1) #store bitcombined ? for all channels dedicated to input Sound Effect 00012df0: 00623021 addu r6,r3,r2 #Music file of located sound effect? 00012df4: 8c630058 lw r3,0x0058(r3) 00012df8: 000a1027 nor r2,r0,r10 #Nor r10 00012dfc: 00434024 and r8,r2,r3 #check for all music that did not match for? 00012e00: 01071024 and r2,r8,r7 #check for all music that did not match for number of channels expected? 00012e04: 1040001b beq r2,r0,0x00012e74 #branch if no valid music (end, return r2 = num channels expected) 00012e08: 240bffff addiu r11,r0,0xffff 00012e0c: 00051040 sll r2,r5,0x01 #music file of exactly r5 channels? 00012e10: 00451021 addu r2,r2,r5 00012e14: 00021080 sll r2,r2,0x02 00012e18: 00451023 subu r2,r2,r5 00012e1c: 00024940 sll r9,r2,0x05 #r5 * 0x160 (for table entry valid to r5?) 00012e20: 8cc30010 lw r3,0x0010(r6) 00012e24: 00000000 nop 00012e28: 006b102b sltu r2,r3,r11 00012e2c: 10400008 beq r2,r0,0x00012e50 #branch ahead if not valid (?) 00012e30: 00a73806 srlv r7,r7,r5 #flush channel-expected flags with flag 6 (flags from flag 6 to 0 + r5) 00012e34: 90c2000d lbu r2,0x000d(r6) 00012e38: 00000000 nop 00012e3c: 2c420021 sltiu r2,r2,0x0021 #less than 33? 00012e40: 10400004 beq r2,r0,0x00012e54 #branch if not 00012e44: 00ec102b sltu r2,r7,r12 00012e48: 00605821 addu r11,r3,r0 00012e4c: 00806821 addu r13,r4,r0 00012e50: 00ec102b sltu r2,r7,r12 00012e54: 10400003 beq r2,r0,0x00012e64 00012e58: 00000000 nop 00012e5c: 08004b9d j 0x00012e74 00012e60: 01a02021 addu r4,r13,r0 00012e64: 00c93023 subu r6,r6,r9 00012e68: 01071024 and r2,r8,r7 00012e6c: 1440ffec bne r2,r0,0x00012e20 00012e70: 00852023 subu r4,r4,r5 00012e74: 03e00008 jr r31 00012e78: 00801021 addu r2,r4,r0
