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A basic, un-resampled version of Zelda UCode cases 0x4,7,b,c. These are used a lot in Pikmin.

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@4293 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
XTra.KrazzY
2009-09-17 22:53:36 +00:00
parent 0ebb7376c8
commit eb8ddbf3e5
2 changed files with 59 additions and 10 deletions
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21
docs/DSP/DSP_UC_Zelda.txt
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@ -3165,6 +3165,8 @@ void 08ed_Decoder0x1_SawWave(ACC0, AR0, AX0.L) {
void 08f3_Decoder0x4_0xb_0xc_WaveTable(ACC0, AR0, AX0.L) {
// See 091c
08f3 0082 0180 lri $AR2, #0x0180 // Entrance 1, 0x0b
08f5 029f 08fd jmp 0x08fd
@ -3172,6 +3174,7 @@ void 08f3_Decoder0x4_0xb_0xc_WaveTable(ACC0, AR0, AX0.L) {
08f9 029f 08fd jmp 0x08fd
08fb 0082 0140 lri $AR2, #0x0140 // Entrance 3, 0x04
08fd 008a 003f lri $WR2, #0x003f
08ff 0086 0000 lri $IX2, #0x0000
0901 1406 lsl $ACC0, #6
@ -3235,23 +3238,31 @@ void 091c_Decoder0x7_WaveTable(ACC0, AR0, AX0.L) {
AC0.M &= 0x003f;
IX2 = AC0.M;
AR2 += 0x0100 + IX2;
AR2 = 0x0100 + IX2;
AC0.M = 0;
// 092e 1150 0934 bloopi #0x50, 0x0934
for(int i = 0; i < 0x50; i++) {
0930 4c4a add'l $ACC0, $ACC1 : $AX1.L, @$AR2
0931 3606 andr'dr $AC0.M, $AX1.H : $AR2
// 0930 4c4a add'l $ACC0, $ACC1 : $AX1.L, @$AR2
ACC0 += ACC1;
AX1.L = *AR2;
// 0931 3606 andr'dr $AC0.M, $AX1.H : $AR2
AC0.M &= 0x003f;
AR2--;
// 0932 1cde mrr $IX2, $AC0.M
IX2 = AC0.M;
0933 340e andr'nr $AC0.M, $AX0.H : $AR2
// 0933 340e andr'nr $AC0.M, $AX0.H : $AR2
AC0.M = 0;
AR2 += IX2;
// 0934 1b19 srri @$AR0, $AX1.L
*AR0++ = AX1.L
*AR0++ = AX1.L;
}