Hard reset SPU
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p1: manual voice reset flag
0: manually play out and set all voices to 0
1: skip that
00018858: 27bdffe0 addiu r29,r29,0xffe0 0001885c: afb00010 sw r16,0x0010(r29) 00018860: 00808021 addu r16,r4,r0 00018864: 3c048003 lui r4,0x8003 00018868: 8c84ad54 lw r4,-0x52ac(r4) DMA control reg 0001886c: afbf0018 sw r31,0x0018(r29) 00018870: afb10014 sw r17,0x0014(r29) 00018874: 8c820000 lw r2,0x0000(r4) read 00018878: 3c03000b lui r3,0x000b 0x000b 0000 0001887c: 00431025 or r2,r2,r3 set SPU channel priority to 3 and turn it on 00018880: ac820000 sw r2,0x0000(r4) 00018884: 3c028003 lui r2,0x8003 00018888: 8c42ad44 lw r2,-0x52bc(r2) volume left IO port 0001888c: 3c018003 lui r1,0x8003 00018890: ac20ad60 sw r0,-0x52a0(r1) 00018894: 3c018003 lui r1,0x8003 00018898: ac20ad64 sw r0,-0x529c(r1) 0001889c: 3c018003 lui r1,0x8003 000188a0: a420ad5c sh r0,-0x52a4(r1) 000188a4: a4400180 sh r0,0x0180(r2) 000188a8: a4400182 sh r0,0x0182(r2) turn main volume left and right to 0 000188ac: a44001aa sh r0,0x01aa(r2) disable and toggle off all SPU control register flags 000188b0: 0c0064e9 jal 0x000193a4 Hold CPU 240 000188b4: 00000000 nop 000188b8: 3c028003 lui r2,0x8003 000188bc: 8c42ad44 lw r2,-0x52bc(r2) 000188c0: 00000000 nop 000188c4: a4400180 sh r0,0x0180(r2) 000188c8: a4400182 sh r0,0x0182(r2) turn main volume left and right to 0, again. just in case they didn't hear you. 000188cc: 944201ae lhu r2,0x01ae(r2) spu status reg. read 000188d0: 00000000 nop 000188d4: 304207ff andi r2,r2,0x07ff check if any requests or SPU modes are on 000188d8: 10400015 beq r2,r0,0x00018930 branch if everything is off 000188dc: 00001821 addu r3,r0,r0 000188e0: 24630001 addiu r3,r3,0x0001 000188e4: 2c620f01 sltiu r2,r3,0x0f01 000188e8: 14400009 bne r2,r0,0x00018910 go to other part of loop 0xf01 times 000188ec: 00000000 nop
SPU timeout
000188f0: 3c048001 lui r4,0x8001 000188f4: 24840044 addiu r4,r4,0x0044 "SPU:T/O [%s]\n" 000188f8: 3c058001 lui r5,0x8001 000188fc: 24a50054 addiu r5,r5,0x0054 "wait (reset)" 00018900: 0c0088cb jal 0x0002232c printf SPU time out [wait (reset)] 00018904: 00000000 nop 00018908: 0800624d j 0x00018934 0001890c: 00002021 addu r4,r0,r0
00018910: 3c028003 lui r2,0x8003 00018914: 8c42ad44 lw r2,-0x52bc(r2) spu status reg 00018918: 00000000 nop 0001891c: 944201ae lhu r2,0x01ae(r2) 00018920: 00000000 nop 00018924: 304207ff andi r2,r2,0x07ff 00018928: 1440ffee bne r2,r0,0x000188e4 loop if anything is still on. 0001892c: 24630001 addiu r3,r3,0x0001 00018930: 00002021 addu r4,r0,r0
00018934: 3c058003 lui r5,0x8003 00018938: 24a57080 addiu r5,r5,0x7080 0001893c: 34020002 ori r2,r0,0x0002 00018940: 3c018003 lui r1,0x8003 00018944: ac22ad68 sw r2,-0x5298(r1) this is only ever 2. 00018948: 34020003 ori r2,r0,0x0003 0001894c: 3c018003 lui r1,0x8003 00018950: ac22ad6c sw r2,-0x5294(r1) this is only ever 3. 00018954: 34020008 ori r2,r0,0x0008 00018958: 3c018003 lui r1,0x8003 0001895c: ac22ad70 sw r2,-0x5290(r1) this is only ever 8. 00018960: 34020007 ori r2,r0,0x0007 00018964: 3c018003 lui r1,0x8003 00018968: ac22ad74 sw r2,-0x528c(r1) this is only ever 7 0001896c: 3c028003 lui r2,0x8003 00018970: 8c42ad44 lw r2,-0x52bc(r2) left IO Port 00018974: 34030004 ori r3,r0,0x0004 00018978: a44301ac sh r3,0x01ac(r2) correctly sets this to the intended value of 4. apparently other modes exist, they're just broken. 0001897c: 3403ffff ori r3,r0,0xffff 00018980: a4400184 sh r0,0x0184(r2) main volume left = 0 00018984: a4400186 sh r0,0x0186(r2) main volume right = 0 00018988: a443018c sh r3,0x018c(r2) voice 0 -> 11 key off = 0 (stops all release?) 0001898c: a443018e sh r3,0x018e(r2) voice 12 -> 23 key off = 0 (stops all release?) 00018990: a4400198 sh r0,0x0198(r2) voice 0 -> 11 channel reverb mode = 0 00018994: a440019a sh r0,0x019a(r2) voice 12 -> 23 channel reverb mode = 0 00018998: a4a00000 sh r0,0x0000(r5) 0001899c: 24840001 addiu r4,r4,0x0001 000189a0: 2882000a slti r2,r4,0x000a 000189a4: 1440fffc bne r2,r0,0x00018998 loop and clear 0xa halfwords from r5 000189a8: 24a50002 addiu r5,r5,0x0002 000189ac: 1600003e bne r16,r0,0x00018aa8 000189b0: 00001021 addu r2,r0,r0 000189b4: 3c048003 lui r4,0x8003 000189b8: 2484ad84 addiu r4,r4,0xad84 000189bc: 3c028003 lui r2,0x8003 000189c0: 8c42ad44 lw r2,-0x52bc(r2) left IO port 000189c4: 34030200 ori r3,r0,0x0200 000189c8: 3c018003 lui r1,0x8003 000189cc: a423ad5c sh r3,-0x52a4(r1) ? 000189d0: a4400190 sh r0,0x0190(r2) 000189d4: a4400192 sh r0,0x0192(r2) voices 0 -> 23 channel pitch = 0 000189d8: a4400194 sh r0,0x0194(r2) 000189dc: a4400196 sh r0,0x0196(r2) voices 0 -> 23 channel noise mode = 0 000189e0: a44001b0 sh r0,0x01b0(r2) 000189e4: a44001b2 sh r0,0x01b2(r2) CD volume left/right = 0 000189e8: a44001b4 sh r0,0x01b4(r2) 000189ec: a44001b6 sh r0,0x01b6(r2) external devices volume left/right = 0 000189f0: 0c0062bb jal 0x00018aec 00018aec - 00018cb4 000189f4: 34050010 ori r5,r0,0x0010 000189f8: 00002021 addu r4,r0,r0 000189fc: 34063fff ori r6,r0,0x3fff 00018a00: 34050200 ori r5,r0,0x0200 00018a04: 3c038003 lui r3,0x8003 00018a08: 8c63ad44 lw r3,-0x52bc(r3) left IO port 00018a0c: 00000000 nop 00018a10: a4600000 sh r0,0x0000(r3) 00018a14: a4600002 sh r0,0x0002(r3) set voice 0 to volume 0 (also voice 3, 6, 9, etc.) 00018a18: a4660004 sh r6,0x0004(r3) set voice 1 left volume to 0x3fff (also voice 4, 7, 10, etc.) 00018a1c: a4650006 sh r5,0x0006(r3) set voice 1 right volume to 0x200 (4, 7, 10, etc.) 00018a20: a4600008 sh r0,0x0008(r3) 00018a24: a460000a sh r0,0x000a(r3) set voice 2 to volume 0 (also voice 5, 8, 11, etc.) 00018a28: 24840001 addiu r4,r4,0x0001 00018a2c: 28820018 slti r2,r4,0x0018 00018a30: 1440fff6 bne r2,r0,0x00018a0c loop and set volume for all voices 00018a34: 24630010 addiu r3,r3,0x0010 00018a38: 3411ffff ori r17,r0,0xffff voices 0 -> 16 00018a3c: 3c028003 lui r2,0x8003 00018a40: 8c42ad44 lw r2,-0x52bc(r2) left IO port 00018a44: 341000ff ori r16,r0,0x00ff voices 17 -> 23 00018a48: a4510188 sh r17,0x0188(r2) 00018a4c: a450018a sh r16,0x018a(r2) turn every voice ON 00018a50: 0c0064e9 jal 0x000193a4 Hold CPU 240 00018a54: 00000000 nop 00018a58: 0c0064e9 jal 0x000193a4 Hold CPU 240 00018a5c: 00000000 nop 00018a60: 0c0064e9 jal 0x000193a4 Hold CPU 240 00018a64: 00000000 nop 00018a68: 0c0064e9 jal 0x000193a4 Hold CPU 240 00018a6c: 00000000 nop 00018a70: 3c028003 lui r2,0x8003 00018a74: 8c42ad44 lw r2,-0x52bc(r2) left IO port 00018a78: 00000000 nop 00018a7c: a451018c sh r17,0x018c(r2) 00018a80: a450018e sh r16,0x018e(r2) set every voice to release 00018a84: 0c0064e9 jal 0x000193a4 Hold CPU 240 00018a88: 00000000 nop 00018a8c: 0c0064e9 jal 0x000193a4 Hold CPU 240 00018a90: 00000000 nop 00018a94: 0c0064e9 jal 0x000193a4 Hold CPU 240 00018a98: 00000000 nop 00018a9c: 0c0064e9 jal 0x000193a4 Hold CPU 240 00018aa0: 00000000 nop 00018aa4: 00001021 addu r2,r0,r0 00018aa8: 3c048003 lui r4,0x8003 00018aac: 8c84ad44 lw r4,-0x52bc(r4) IO port left 00018ab0: 34030001 ori r3,r0,0x0001 00018ab4: 3c018003 lui r1,0x8003 00018ab8: ac23ad78 sw r3,-0x5288(r1) 00018abc: 3403c000 ori r3,r0,0xc000 0xc000 (enable SPU and unmute) 00018ac0: a48301aa sh r3,0x01aa(r4) give instruction to SPU 00018ac4: 3c018003 lui r1,0x8003 00018ac8: ac20ad7c sw r0,-0x5284(r1) 00018acc: 3c018003 lui r1,0x8003 00018ad0: ac20ad80 sw r0,-0x5280(r1) 00018ad4: 8fbf0018 lw r31,0x0018(r29) 00018ad8: 8fb10014 lw r17,0x0014(r29) 00018adc: 8fb00010 lw r16,0x0010(r29) 00018ae0: 27bd0020 addiu r29,r29,0x0020 00018ae4: 03e00008 jr r31 00018ae8: 00000000 nop
