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Debugger: Improved debugger tools for MMC5 extended attributes

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This commit is contained in:
Sour 2018-01-07 13:15:25 -05:00
parent a0a6d89416
commit 35f5eb60c1
2 changed files with 72 additions and 12 deletions
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29
Core/MMC5.h
View file

@ -524,4 +524,33 @@ protected:
return MemoryManager::GetOpenBus();
}
public:
bool IsExtendedAttributes()
{
return _extendedRamMode == 1;
}
uint8_t GetExAttributeNtPalette(uint16_t ntAddr)
{
ntAddr &= 0x3FF;
uint8_t value = InternalReadRam(0x5C00 + ntAddr);
return (value & 0xC0) >> 6;
}
uint32_t GetExAttributeAbsoluteTileAddr(uint16_t ntAddr, uint16_t chrAddr)
{
ntAddr &= 0x3FF;
uint8_t value = InternalReadRam(0x5C00 + ntAddr);
//"The pattern fetches ignore the standard CHR banking bits, and instead use the top two bits of $5130 and the bottom 6 bits from Expansion RAM to choose a 4KB bank to select the tile from."
uint16_t chrBank = ((value & 0x3F) | (_chrUpperBits << 6)) % (_chrRomSize / 0x1000);
return chrBank * 0x1000 + (chrAddr & 0xFFF);
}
uint8_t GetExAttributeTileData(uint16_t ntAddr, uint16_t chrAddr)
{
return _chrRom[GetExAttributeAbsoluteTileAddr(ntAddr, chrAddr)];
}
};

55
Core/MemoryDumper.cpp
View file

@ -7,6 +7,7 @@
#include "MemoryDumper.h"
#include "VideoDecoder.h"
#include "Disassembler.h"
#include "MMC5.h"
MemoryDumper::MemoryDumper(shared_ptr<PPU> ppu, shared_ptr<MemoryManager> memoryManager, shared_ptr<BaseMapper> mapper, shared_ptr<CodeDataLogger> codeDataLogger, Debugger* debugger, shared_ptr<Disassembler> disassembler)
{
@ -220,23 +221,36 @@ uint8_t MemoryDumper::GetMemoryValue(DebugMemoryType memoryType, uint32_t addres
void MemoryDumper::GetNametable(int nametableIndex, uint32_t* frameBuffer, uint8_t* tileData, uint8_t* paletteData)
{
shared_ptr<MMC5> mmc5 = std::dynamic_pointer_cast<MMC5>(_mapper);
uint32_t *rgbPalette = EmulationSettings::GetRgbPalette();
uint16_t bgAddr = _ppu->GetState().ControlFlags.BackgroundPatternAddr;
uint16_t baseAddr = 0x2000 + nametableIndex * 0x400;
uint16_t baseAttributeAddr = baseAddr + 960;
for(uint8_t y = 0; y < 30; y++) {
for(uint8_t x = 0; x < 32; x++) {
uint8_t tileIndex = _mapper->DebugReadVRAM(baseAddr + (y << 5) + x);
uint16_t ntIndex = (y << 5) + x;
uint8_t tileIndex = _mapper->DebugReadVRAM(baseAddr + ntIndex);
uint8_t attribute = _mapper->DebugReadVRAM(baseAttributeAddr + ((y & 0xFC) << 1) + (x >> 2));
tileData[y * 32 + x] = tileIndex;
paletteData[y * 32 + x] = attribute;
uint8_t shift = (x & 0x02) | ((y & 0x02) << 1);
uint8_t paletteBaseAddr = ((attribute >> shift) & 0x03) << 2;
uint8_t paletteBaseAddr;
if(mmc5 && mmc5->IsExtendedAttributes()) {
paletteBaseAddr = mmc5->GetExAttributeNtPalette(ntIndex) << 2;
} else {
paletteBaseAddr = ((attribute >> shift) & 0x03) << 2;
}
uint16_t tileAddr = bgAddr + (tileIndex << 4);
for(uint8_t i = 0; i < 8; i++) {
uint8_t lowByte = _mapper->DebugReadVRAM(tileAddr + i);
uint8_t highByte = _mapper->DebugReadVRAM(tileAddr + i + 8);
uint8_t lowByte, highByte;
if(mmc5 && mmc5->IsExtendedAttributes()) {
lowByte = mmc5->GetExAttributeTileData(ntIndex, tileAddr + i);
highByte = mmc5->GetExAttributeTileData(ntIndex, tileAddr + i + 8);
} else {
lowByte = _mapper->DebugReadVRAM(tileAddr + i);
highByte = _mapper->DebugReadVRAM(tileAddr + i + 8);
}
for(uint8_t j = 0; j < 8; j++) {
uint8_t color = ((lowByte >> (7 - j)) & 0x01) | (((highByte >> (7 - j)) & 0x01) << 1);
frameBuffer[(y << 11) + (x << 3) + (i << 8) + j] = rgbPalette[(color == 0 ? _ppu->ReadPaletteRAM(0) : _ppu->ReadPaletteRAM(paletteBaseAddr + color)) & 0x3F];
@ -248,6 +262,7 @@ void MemoryDumper::GetNametable(int nametableIndex, uint32_t* frameBuffer, uint8
void MemoryDumper::GatherChrPaletteInfo()
{
shared_ptr<MMC5> mmc5 = std::dynamic_pointer_cast<MMC5>(_mapper);
uint16_t bgAddr = _ppu->GetState().ControlFlags.BackgroundPatternAddr;
uint32_t palettes[8];
@ -259,13 +274,20 @@ void MemoryDumper::GatherChrPaletteInfo()
(_ppu->ReadPaletteRAM(i * 4 + 3) << 24);
}
auto processTilePalette = [=](uint16_t tileAddr, uint8_t paletteIndex) {
auto processTilePalette = [=](uint32_t tileAddr, uint8_t paletteIndex) {
TileKey key;
uint32_t absoluteAddr;
if(!mmc5 || !mmc5->IsExtendedAttributes()) {
absoluteAddr = _mapper->ToAbsoluteChrAddress(tileAddr);
} else {
absoluteAddr = tileAddr;
}
if(_mapper->HasChrRom()) {
key.TileIndex = _mapper->ToAbsoluteChrAddress(tileAddr) / 16;
key.TileIndex = absoluteAddr / 16;
key.IsChrRamTile = false;
} else {
_mapper->CopyChrRamTile(_mapper->ToAbsoluteChrAddress(tileAddr), key.TileData);
_mapper->CopyChrRamTile(absoluteAddr, key.TileData);
key.IsChrRamTile = true;
}
_paletteByTile[key] = palettes[paletteIndex];
@ -277,11 +299,20 @@ void MemoryDumper::GatherChrPaletteInfo()
uint16_t baseAttributeAddr = baseAddr + 960;
for(uint8_t y = 0; y < 30; y++) {
for(uint8_t x = 0; x < 32; x++) {
uint8_t tileIndex = _mapper->DebugReadVRAM(baseAddr + (y << 5) + x);
uint16_t tileAddr = bgAddr + (tileIndex << 4);
uint8_t attribute = _mapper->DebugReadVRAM(baseAttributeAddr + ((y & 0xFC) << 1) + (x >> 2));
uint8_t shift = (x & 0x02) | ((y & 0x02) << 1);
uint8_t paletteIndex = ((attribute >> shift) & 0x03);
uint16_t ntIndex = (y << 5) + x;
uint8_t tileIndex = _mapper->DebugReadVRAM(baseAddr + ntIndex);
uint16_t tileAddr;
uint8_t paletteIndex;
if(mmc5 && mmc5->IsExtendedAttributes()) {
paletteIndex = mmc5->GetExAttributeNtPalette(ntIndex);
tileAddr = mmc5->GetExAttributeAbsoluteTileAddr(ntIndex, tileIndex * 16);
} else {
uint8_t attribute = _mapper->DebugReadVRAM(baseAttributeAddr + ((y & 0xFC) << 1) + (x >> 2));
uint8_t shift = (x & 0x02) | ((y & 0x02) << 1);
paletteIndex = ((attribute >> shift) & 0x03);
tileAddr = bgAddr + (tileIndex << 4);
}
processTilePalette(tileAddr, paletteIndex);
}