melonDS/GPU3D.cpp

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/*
Copyright 2016-2017 StapleButter
This file is part of melonDS.
melonDS is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.
melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with melonDS. If not, see http://www.gnu.org/licenses/.
*/
#include <stdio.h>
#include <string.h>
#include "NDS.h"
#include "GPU.h"
#include "FIFO.h"
namespace GPU3D
{
const u32 CmdNumParams[256] =
{
// 0x00
0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
// 0x10
1, 0, 1, 1, 1, 0, 16, 12, 16, 12, 9, 3, 3,
0, 0, 0,
// 0x20
1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1,
0, 0, 0, 0,
// 0x30
1, 1, 1, 1, 32,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
// 0x40
1, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
// 0x50
1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
// 0x60
1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
// 0x70
3, 2, 1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
// 0x80+
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
const s32 CmdNumCycles[256] =
{
// 0x00
0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
// 0x10
1, 17, 36, 17, 36, 19, 34, 30, 35, 31, 28, 22, 22,
0, 0, 0,
// 0x20
1, 9, 1, 9, 8, 8, 8, 8, 8, 1, 1, 1,
0, 0, 0, 0,
// 0x30
4, 4, 6, 1, 32,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
// 0x40
1, 1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
// 0x50
392,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
// 0x60
1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
// 0x70
103, 9, 5,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
// 0x80+
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
typedef struct
{
u8 Command;
u32 Param;
} CmdFIFOEntry;
FIFO<CmdFIFOEntry>* CmdFIFO;
FIFO<CmdFIFOEntry>* CmdPIPE;
u32 NumCommands, CurCommand, ParamCount, TotalParams;
u32 GXStat;
u32 ExecParams[32];
u32 ExecParamCount;
s32 CycleCount;
u32 MatrixMode;
s32 ProjMatrix[16];
s32 PosMatrix[16];
s32 VecMatrix[16];
s32 TexMatrix[16];
s32 ProjMatrixStack[16];
s32 PosMatrixStack[31][16];
s32 ProjMatrixStackPointer;
s32 PosMatrixStackPointer;
void MatrixLoadIdentity(s32* m)
{
m[0] = 0x1000; m[1] = 0; m[2] = 0; m[3] = 0;
m[4] = 0; m[5] = 0x1000; m[6] = 0; m[7] = 0;
m[8] = 0; m[9] = 0; m[10] = 0x1000; m[11] = 0;
m[12] = 0; m[13] = 0; m[14] = 0; m[15] = 0x1000;
}
void MatrixLoad4x4(s32* m, s32* s)
{
memcpy(m, s, 16*4);
}
void MatrixLoad4x3(s32* m, s32* s)
{
m[0] = s[0]; m[1] = s[1]; m[2] = s[2]; m[3] = 0;
m[4] = s[3]; m[5] = s[4]; m[6] = s[5]; m[7] = 0;
m[8] = s[6]; m[9] = s[7]; m[10] = s[8]; m[11] = 0;
m[12] = s[9]; m[13] = s[10]; m[14] = s[11]; m[15] = 0x1000;
}
void MatrixMult4x4(s32* m, s32* s)
{
s32 tmp[16];
memcpy(tmp, m, 16*4);
// m = s*m
m[0] = (s[0]*tmp[0] + s[1]*tmp[4] + s[2]*tmp[8] + s[3]*tmp[12]) >> 12;
m[1] = (s[0]*tmp[1] + s[1]*tmp[5] + s[2]*tmp[9] + s[3]*tmp[13]) >> 12;
m[2] = (s[0]*tmp[2] + s[1]*tmp[6] + s[2]*tmp[10] + s[3]*tmp[14]) >> 12;
m[3] = (s[0]*tmp[3] + s[1]*tmp[7] + s[2]*tmp[11] + s[3]*tmp[15]) >> 12;
m[4] = (s[4]*tmp[0] + s[5]*tmp[4] + s[6]*tmp[8] + s[7]*tmp[12]) >> 12;
m[5] = (s[4]*tmp[1] + s[5]*tmp[5] + s[6]*tmp[9] + s[7]*tmp[13]) >> 12;
m[6] = (s[4]*tmp[2] + s[5]*tmp[6] + s[6]*tmp[10] + s[7]*tmp[14]) >> 12;
m[7] = (s[4]*tmp[3] + s[5]*tmp[7] + s[6]*tmp[11] + s[7]*tmp[15]) >> 12;
m[8] = (s[8]*tmp[0] + s[9]*tmp[4] + s[10]*tmp[8] + s[11]*tmp[12]) >> 12;
m[9] = (s[8]*tmp[1] + s[9]*tmp[5] + s[10]*tmp[9] + s[11]*tmp[13]) >> 12;
m[10] = (s[8]*tmp[2] + s[9]*tmp[6] + s[10]*tmp[10] + s[11]*tmp[14]) >> 12;
m[11] = (s[8]*tmp[3] + s[9]*tmp[7] + s[10]*tmp[11] + s[11]*tmp[15]) >> 12;
m[12] = (s[12]*tmp[0] + s[13]*tmp[4] + s[14]*tmp[8] + s[15]*tmp[12]) >> 12;
m[13] = (s[12]*tmp[1] + s[13]*tmp[5] + s[14]*tmp[9] + s[15]*tmp[13]) >> 12;
m[14] = (s[12]*tmp[2] + s[13]*tmp[6] + s[14]*tmp[10] + s[15]*tmp[14]) >> 12;
m[15] = (s[12]*tmp[3] + s[13]*tmp[7] + s[14]*tmp[11] + s[15]*tmp[15]) >> 12;
}
void MatrixMult4x3(s32* m, s32* s)
{
s32 tmp[16];
memcpy(tmp, m, 16*4);
// m = s*m
m[0] = (s[0]*tmp[0] + s[1]*tmp[4] + s[2]*tmp[8]) >> 12;
m[1] = (s[0]*tmp[1] + s[1]*tmp[5] + s[2]*tmp[9]) >> 12;
m[2] = (s[0]*tmp[2] + s[1]*tmp[6] + s[2]*tmp[10]) >> 12;
m[3] = (s[0]*tmp[3] + s[1]*tmp[7] + s[2]*tmp[11]) >> 12;
m[4] = (s[3]*tmp[0] + s[4]*tmp[4] + s[5]*tmp[8]) >> 12;
m[5] = (s[3]*tmp[1] + s[4]*tmp[5] + s[5]*tmp[9]) >> 12;
m[6] = (s[3]*tmp[2] + s[4]*tmp[6] + s[5]*tmp[10]) >> 12;
m[7] = (s[3]*tmp[3] + s[4]*tmp[7] + s[5]*tmp[11]) >> 12;
m[8] = (s[6]*tmp[0] + s[7]*tmp[4] + s[8]*tmp[8]) >> 12;
m[9] = (s[6]*tmp[1] + s[7]*tmp[5] + s[8]*tmp[9]) >> 12;
m[10] = (s[6]*tmp[2] + s[7]*tmp[6] + s[8]*tmp[10]) >> 12;
m[11] = (s[6]*tmp[3] + s[7]*tmp[7] + s[8]*tmp[11]) >> 12;
m[12] = (s[9]*tmp[0] + s[10]*tmp[4] + s[11]*tmp[8] + 0x1000*tmp[12]) >> 12;
m[13] = (s[9]*tmp[1] + s[10]*tmp[5] + s[11]*tmp[9] + 0x1000*tmp[13]) >> 12;
m[14] = (s[9]*tmp[2] + s[10]*tmp[6] + s[11]*tmp[10] + 0x1000*tmp[14]) >> 12;
m[15] = (s[9]*tmp[3] + s[10]*tmp[7] + s[11]*tmp[11] + 0x1000*tmp[15]) >> 12;
}
void MatrixMult3x3(s32* m, s32* s)
{
s32 tmp[12];
memcpy(tmp, m, 12*4);
// m = s*m
m[0] = (s[0]*tmp[0] + s[1]*tmp[4] + s[2]*tmp[8]) >> 12;
m[1] = (s[0]*tmp[1] + s[1]*tmp[5] + s[2]*tmp[9]) >> 12;
m[2] = (s[0]*tmp[2] + s[1]*tmp[6] + s[2]*tmp[10]) >> 12;
m[3] = (s[0]*tmp[3] + s[1]*tmp[7] + s[2]*tmp[11]) >> 12;
m[4] = (s[3]*tmp[0] + s[4]*tmp[4] + s[5]*tmp[8]) >> 12;
m[5] = (s[3]*tmp[1] + s[4]*tmp[5] + s[5]*tmp[9]) >> 12;
m[6] = (s[3]*tmp[2] + s[4]*tmp[6] + s[5]*tmp[10]) >> 12;
m[7] = (s[3]*tmp[3] + s[4]*tmp[7] + s[5]*tmp[11]) >> 12;
m[8] = (s[6]*tmp[0] + s[7]*tmp[4] + s[8]*tmp[8]) >> 12;
m[9] = (s[6]*tmp[1] + s[7]*tmp[5] + s[8]*tmp[9]) >> 12;
m[10] = (s[6]*tmp[2] + s[7]*tmp[6] + s[8]*tmp[10]) >> 12;
m[11] = (s[6]*tmp[3] + s[7]*tmp[7] + s[8]*tmp[11]) >> 12;
}
void MatrixScale(s32* m, s32* s)
{
m[0] = (s[0]*m[0]) >> 12;
m[1] = (s[0]*m[1]) >> 12;
m[2] = (s[0]*m[2]) >> 12;
m[3] = (s[0]*m[3]) >> 12;
m[4] = (s[1]*m[4]) >> 12;
m[5] = (s[1]*m[5]) >> 12;
m[6] = (s[1]*m[6]) >> 12;
m[7] = (s[1]*m[7]) >> 12;
m[8] = (s[2]*m[8]) >> 12;
m[9] = (s[2]*m[9]) >> 12;
m[10] = (s[2]*m[10]) >> 12;
m[11] = (s[2]*m[11]) >> 12;
}
void MatrixTranslate(s32* m, s32* s)
{
m[12] += (s[0]*m[0] + s[1]*m[4] + s[2]*m[8]) >> 12;
m[13] += (s[0]*m[1] + s[1]*m[5] + s[2]*m[9]) >> 12;
m[14] += (s[0]*m[2] + s[1]*m[6] + s[2]*m[10]) >> 12;
}
bool Init()
{
CmdFIFO = new FIFO<CmdFIFOEntry>(256);
CmdPIPE = new FIFO<CmdFIFOEntry>(4);
return true;
}
void DeInit()
{
delete CmdFIFO;
delete CmdPIPE;
}
void Reset()
{
CmdFIFO->Clear();
CmdPIPE->Clear();
NumCommands = 0;
CurCommand = 0;
ParamCount = 0;
TotalParams = 0;
GXStat = 0;
memset(ExecParams, 0, 32*4);
ExecParamCount = 0;
CycleCount = 0;
MatrixMode = 0;
MatrixLoadIdentity(ProjMatrix);
MatrixLoadIdentity(PosMatrix);
MatrixLoadIdentity(VecMatrix);
MatrixLoadIdentity(TexMatrix);
memset(ProjMatrixStack, 0, 16*4);
memset(PosMatrixStack, 0, 31 * 16*4);
ProjMatrixStackPointer = 0;
PosMatrixStackPointer = 0;
}
void CmdFIFOWrite(CmdFIFOEntry& entry)
{
if (CmdFIFO->IsEmpty() && !CmdPIPE->IsFull())
{
CmdPIPE->Write(entry);
}
else
{
if (CmdFIFO->IsFull())
{
printf("!!! GX FIFO FULL\n");
return;
}
CmdFIFO->Write(entry);
}
}
CmdFIFOEntry CmdFIFORead()
{
CmdFIFOEntry ret = CmdPIPE->Read();
if (CmdPIPE->Level() <= 2)
{
if (!CmdFIFO->IsEmpty())
CmdPIPE->Write(CmdFIFO->Read());
if (!CmdFIFO->IsEmpty())
CmdPIPE->Write(CmdFIFO->Read());
CheckFIFODMA();
CheckFIFOIRQ();
}
return ret;
}
void ExecuteCommand()
{
CmdFIFOEntry entry = CmdFIFORead();
ExecParams[ExecParamCount] = entry.Param;
ExecParamCount++;
if (ExecParamCount >= CmdNumParams[entry.Command])
{
CycleCount += CmdNumCycles[entry.Command];
ExecParamCount = 0;
GXStat &= ~(1<<14);
//printf("3D CMD %02X\n", entry.Command);
switch (entry.Command)
{
case 0x10: // matrix mode
MatrixMode = ExecParams[0] & 0x3;
break;
case 0x11: // push matrix
if (MatrixMode == 0)
{
if (ProjMatrixStackPointer > 0)
{
printf("!! PROJ MATRIX STACK OVERFLOW\n");
GXStat |= (1<<15);
break;
}
memcpy(ProjMatrixStack, ProjMatrix, 16*4);
ProjMatrixStackPointer++;
GXStat |= (1<<14);
}
else if (MatrixMode == 3)
{
printf("!! CAN'T PUSH TEXTURE MATRIX\n");
GXStat |= (1<<15); // CHECKME
}
else
{
if (PosMatrixStackPointer > 30)
{
printf("!! POS MATRIX STACK OVERFLOW\n");
GXStat |= (1<<15);
break;
}
memcpy(PosMatrixStack[PosMatrixStackPointer], PosMatrix, 16*4);
PosMatrixStackPointer++;
GXStat |= (1<<14);
}
break;
case 0x12: // pop matrix
if (MatrixMode == 0)
{
if (ProjMatrixStackPointer <= 0)
{
printf("!! PROJ MATRIX STACK UNDERFLOW\n");
GXStat |= (1<<15);
break;
}
ProjMatrixStackPointer--;
memcpy(ProjMatrix, ProjMatrixStack, 16*4);
GXStat |= (1<<14);
}
else if (MatrixMode == 3)
{
printf("!! CAN'T POP TEXTURE MATRIX\n");
GXStat |= (1<<15); // CHECKME
}
else
{
s32 offset = (s32)(ExecParams[0] << 26) >> 26;
PosMatrixStackPointer -= offset;
if (PosMatrixStackPointer < 0 || PosMatrixStackPointer > 30)
{
printf("!! POS MATRIX STACK UNDER/OVERFLOW %d\n", PosMatrixStackPointer);
PosMatrixStackPointer += offset;
GXStat |= (1<<15);
break;
}
memcpy(PosMatrix, PosMatrixStack[PosMatrixStackPointer], 16*4);
GXStat |= (1<<14);
}
break;
case 0x13: // store matrix
if (MatrixMode == 0)
{
memcpy(ProjMatrixStack, ProjMatrix, 16*4);
}
else if (MatrixMode == 3)
{
printf("!! CAN'T STORE TEXTURE MATRIX\n");
GXStat |= (1<<15); // CHECKME
}
else
{
u32 addr = ExecParams[0] & 0x1F;
if (addr > 30)
{
printf("!! POS MATRIX STORE ADDR 31\n");
GXStat |= (1<<15);
break;
}
memcpy(PosMatrixStack[addr], PosMatrix, 16*4);
}
break;
case 0x14: // restore matrix
if (MatrixMode == 0)
{
memcpy(ProjMatrix, ProjMatrixStack, 16*4);
}
else if (MatrixMode == 3)
{
printf("!! CAN'T RESTORE TEXTURE MATRIX\n");
GXStat |= (1<<15); // CHECKME
}
else
{
u32 addr = ExecParams[0] & 0x1F;
if (addr > 30)
{
printf("!! POS MATRIX STORE ADDR 31\n");
GXStat |= (1<<15);
break;
}
memcpy(PosMatrix, PosMatrixStack[addr], 16*4);
}
break;
case 0x15: // identity
if (MatrixMode == 0)
MatrixLoadIdentity(ProjMatrix);
else if (MatrixMode == 3)
MatrixLoadIdentity(TexMatrix);
else
{
MatrixLoadIdentity(PosMatrix);
if (MatrixMode == 2)
MatrixLoadIdentity(VecMatrix);
}
break;
case 0x16: // load 4x4
if (MatrixMode == 0)
MatrixLoad4x4(ProjMatrix, (s32*)ExecParams);
else if (MatrixMode == 3)
MatrixLoad4x4(TexMatrix, (s32*)ExecParams);
else
{
MatrixLoad4x4(PosMatrix, (s32*)ExecParams);
if (MatrixMode == 2)
MatrixLoad4x4(VecMatrix, (s32*)ExecParams);
}
break;
case 0x17: // load 4x3
if (MatrixMode == 0)
MatrixLoad4x3(ProjMatrix, (s32*)ExecParams);
else if (MatrixMode == 3)
MatrixLoad4x3(TexMatrix, (s32*)ExecParams);
else
{
MatrixLoad4x3(PosMatrix, (s32*)ExecParams);
if (MatrixMode == 2)
MatrixLoad4x3(VecMatrix, (s32*)ExecParams);
}
break;
case 0x18: // mult 4x4
if (MatrixMode == 0)
MatrixMult4x4(ProjMatrix, (s32*)ExecParams);
else if (MatrixMode == 3)
MatrixMult4x4(TexMatrix, (s32*)ExecParams);
else
{
MatrixMult4x4(PosMatrix, (s32*)ExecParams);
if (MatrixMode == 2)
{
MatrixMult4x4(VecMatrix, (s32*)ExecParams);
CycleCount += 30;
}
}
break;
case 0x19: // mult 4x3
if (MatrixMode == 0)
MatrixMult4x3(ProjMatrix, (s32*)ExecParams);
else if (MatrixMode == 3)
MatrixMult4x3(TexMatrix, (s32*)ExecParams);
else
{
MatrixMult4x3(PosMatrix, (s32*)ExecParams);
if (MatrixMode == 2)
{
MatrixMult4x3(VecMatrix, (s32*)ExecParams);
CycleCount += 30;
}
}
break;
case 0x1A: // mult 3x3
if (MatrixMode == 0)
MatrixMult3x3(ProjMatrix, (s32*)ExecParams);
else if (MatrixMode == 3)
MatrixMult3x3(TexMatrix, (s32*)ExecParams);
else
{
MatrixMult3x3(PosMatrix, (s32*)ExecParams);
if (MatrixMode == 2)
{
MatrixMult3x3(VecMatrix, (s32*)ExecParams);
CycleCount += 30;
}
}
break;
case 0x1B: // scale
if (MatrixMode == 0)
MatrixScale(ProjMatrix, (s32*)ExecParams);
else if (MatrixMode == 3)
MatrixScale(TexMatrix, (s32*)ExecParams);
else
MatrixScale(PosMatrix, (s32*)ExecParams);
break;
case 0x1C: // translate
if (MatrixMode == 0)
MatrixTranslate(ProjMatrix, (s32*)ExecParams);
else if (MatrixMode == 3)
MatrixTranslate(TexMatrix, (s32*)ExecParams);
else
{
MatrixTranslate(PosMatrix, (s32*)ExecParams);
if (MatrixMode == 2)
MatrixTranslate(VecMatrix, (s32*)ExecParams);
}
break;
case 0x21:
// TODO: more cycles if lights are enabled
break;
case 0x50:
// TODO: make it happen upon VBlank, not right now
break;
}
}
}
void Run(s32 cycles)
{
if (CycleCount <= 0)
{
while (CycleCount <= 0 && !CmdPIPE->IsEmpty())
ExecuteCommand();
if (CmdPIPE->IsEmpty())
CycleCount = 0;
}
else
CycleCount -= cycles;
}
void CheckFIFOIRQ()
{
bool irq = false;
switch (GXStat >> 30)
{
case 1: irq = (CmdFIFO->Level() < 128); break;
case 2: irq = CmdFIFO->IsEmpty(); break;
}
if (irq) NDS::TriggerIRQ(0, NDS::IRQ_GXFIFO);
}
void CheckFIFODMA()
{
if (CmdFIFO->Level() < 128)
NDS::CheckDMAs(0, 0x07);
}
u8 Read8(u32 addr)
{
return 0;
}
u16 Read16(u32 addr)
{
return 0;
}
u32 Read32(u32 addr)
{
switch (addr)
{
case 0x04000320:
return 46; // TODO, eventually
case 0x04000600:
{
u32 fifolevel = CmdFIFO->Level();
return GXStat |
((PosMatrixStackPointer & 0x1F) << 8) |
((ProjMatrixStackPointer & 0x1) << 13) |
(fifolevel << 16) |
(fifolevel < 128 ? (1<<25) : 0) |
(fifolevel == 0 ? (1<<26) : 0) |
(CycleCount > 0 ? (1<<27) : 0);
}
}
if (addr >= 0x04000640 && addr < 0x04000680)
{
printf("!! CLIPMTX READ\n");
return 0;
}
if (addr >= 0x04000680 && addr < 0x040006A4)
{
printf("!! VECMTX READ\n");
return 0;
}
return 0;
}
void Write8(u32 addr, u8 val)
{
//
}
void Write16(u32 addr, u16 val)
{
//
}
void Write32(u32 addr, u32 val)
{
switch (addr)
{
case 0x04000600:
if (val & 0x8000) GXStat &= ~0x8000;
val &= 0xC0000000;
GXStat &= 0x3FFFFFFF;
GXStat |= val;
return;
}
if (addr >= 0x04000400 && addr < 0x04000440)
{
if (NumCommands == 0)
{
NumCommands = 4;
CurCommand = val;
ParamCount = 0;
TotalParams = CmdNumParams[CurCommand & 0xFF];
}
else
ParamCount++;
while (ParamCount == TotalParams)
{
CmdFIFOEntry entry;
entry.Command = CurCommand & 0xFF;
entry.Param = val;
CmdFIFOWrite(entry);
CurCommand >>= 8;
NumCommands--;
if (NumCommands == 0) break;
ParamCount = 0;
TotalParams = CmdNumParams[CurCommand & 0xFF];
}
return;
}
if (addr >= 0x04000440 && addr < 0x040005CC)
{
CmdFIFOEntry entry;
entry.Command = (addr & 0x1FC) >> 2;
entry.Param = val;
CmdFIFOWrite(entry);
return;
}
}
}