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//
// Pseudo C
//
//
// DSP:
//
// Memory USAGE
0x0B80 to 0x0C40 CurrentPB
0x0B87
0x0E15 SrcSelectFunction // perhaps CMD0 setups some kind of jmp table at this addresses
0x0E16 CoefFunction
0x0E14 MixCtrlFunction
0x0e17 TmpBuffer exceptions
0x0e18 TmpBuffer exceptions
0x0e19 TmpBuffer exceptions
// instrcution memory
0x0B31 to 0x0B33 some kind of JMP-Table to handle srcSelect ???
0x0B34 to 0x0B36 some kind of JMP-Table to handle coefSelect ???
0x0B11 to 0x0B1F some kind of JMP-Table to handle mixerCtrl ???
void CMD2()
{
// 0x1BC
int_addrPB = (*r00 << 16) | *(r00+1)
DMA_From_Memory(0x0B80, _addrPB, 0xC0); // read first PB to 0x0B80
// 0x1C7
*0x0E08 = 0x0000
*0x0E09 = 0x0140
*0x0E0A = 0x0280
*0x0E0B = 0x0400
*0x0E0C = 0x0540
*0x0E0D = 0x0680
*0x0E0E = 0x07C0
*0x0E0F = 0x0900
*0x0E10 = 0x0A40
// 0x1E4
WaitForDMATransfer()
// 0x1E6
Addr = (*0x0BA7 << 16) | *0x0BA8
DMA_From_Memory(0x03C0, Addr, 0x80); // Copy Update Data to 0x03C0 (AXPBUPDATE dataHi, dataLo)
// 0x1F4
R03 = (*0x0B84) + 0x0B31 // AXPB->srcSelect + 0x0B31 ??? some kind of flag handling ??? SRCSEL can be 0x0 to 0x2
AC0.M = *R03
*0x0E15 = *AC0.M
// 0x1FD
R03 = (*0x0B85) + 0x0B34 // AXPB->coefSelect + 0x0B34 ??? some kind of flag handling ??? COEF can be 0x0 to 0x2
AC0.M = *R03
*0x0E16 = *AC0.M
// 0x206
R03 = (*0x0B86) + 0x0B11 // AXPB->mixerCtrl + 0x0B36 ??? some kind of flag handling ??? MIXCTRL can be 0x0 to 0xE
AC0.M = *R03
*0x0E14 = *AC0.M
// 0x20F
if (*0x0B9B == 0) // AXPBITD->flag (on or off for this voice)
{
// jmp to 0x23a
*0x0E42 = 0x0CE0
*0x0E40 = 0x0CE0
*0x0E41 = 0x0CE0
*0x0E43 = 0x0CE0
WaitForDMATransfer()
}
else
{
// code at 0x216
*0x0E40 = *0x0B9E + 0x0CC0 // AXPBITD->shiftL
*0x0E41 = *0x0B9F + 0x0CC0 // AXPBITD->shiftR
*0x0E42 = 0xCE0
*0x0E43 = 0xCE0
WaitForDMATransfer()
// 0x22a
Addr = (*0x0B9C << 16) | *0x0B9D
DMA_From_Memory(0x0CC0, Addr, 0x40); // (AXPBITD->bufferHi << 16 | AXPBITD->bufferLo) -> 0xCC0
WaitForDMATransfer()
}
}
void CMD0()
{
}
void CMD3()
{
0x0E07 = R00
R00 = 0x0BA2 // AXPBUPDATE->updNum
R01 = 0x03C0
*0x0E04 = 0x05
AC1 = 0
AC0 = 0
AX0.H = *R00++ // AXPBUPDATE->updNum[0]
AC1.M = 0x0B80
// 0x256
for (i=0; i<AX0.H; i++)
{
AC0.M = *R01++
AC0.M = AC0.M + AC1.M
AX1.L = *R01++
R02 = AC0.M
*R02 = AX1.L
}
// 0x25c
R03 = 0x0E05
*R03++ = R01
*R03++ = R02
// 0x260
AC0.M = *0x0B87 // AXPB->state
if (AC0.M == 1)
{
// JMP 0x267 (AX_PB_STATE_RUN)
*0x0E1C = *0x0E42
CALLR *0x0E15 // Load Sample (SrcSelectFunction)
// 0x270
AC0.M = *0xBB3 // AXPBVE->currentDelta (.15 volume at start of frame)
AC1.M = *0xBB2 // AXPBVE->currentVolume
// 0x278
AX0.L = AC1.M
AC1.M = AC1.M + AC0.M
AC0.M = AC0.M << 1
SET15 // ????
AX1.H = AC0.M
AC0.M = AX0.L
AX0.L = 0x8000
R00 = 0x0E44
// 0x27f
// scale volume table
.
.
.
/* for (int i=0; i<32; i++)
{
*R00++ = AC0.M;
prod = AX0.L * AX1.H
*R00++ = AC1.M;
AC0 = AC0 + prod
prod = AX0.L * AX1.H
*R00++ = AC0.M;
AC1 = AC1 + prod
prod = AX0.L * AX1.H
}*/
// 0x29f
*0xBB2 = CurrentVolume
// 0x2a1
// mutiply volume with sample
.
.
.
// 0x2ea
// Call mixer
// 0x02f0
}
else
{
// JMP 0x332
.
.
.
.
}
}
// ===============================================================
void Func_0x065D()
{
}
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