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Fixing rectangle memory endPage inclusivness

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This commit is contained in:
Zoe Roux
2021-02-04 11:13:04 +01:00
parent 2e1ede5016
commit 04f9b9a8fc
5 changed files with 16 additions and 15 deletions
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2
sources/Memory/ARectangleMemory.cpp
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@@ -13,7 +13,7 @@ namespace ComSquare::Memory
uint8_t bank = addr >> 16u;
uint16_t page = addr;
unsigned bankCount = bank - this->_startBank;
unsigned pageCount = this->_endPage - this->_startPage;
unsigned pageCount = this->_endPage + 1 - this->_startPage;
if (bank < this->_startBank || bank > this->_endBank)
throw InvalidAddress("Rectangle memory: Invalid Bank", addr);

4
sources/Memory/RectangleShadow.cpp
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@@ -21,7 +21,7 @@ namespace ComSquare::Memory
uint24_t RectangleShadow::getRelativeAddress(uint24_t addr) const
{
uint24_t base = ARectangleMemory::getRelativeAddress(addr);
return base + this->_bankOffset * (this->_endPage - this->_startPage);
return base + this->_bankOffset * (1 + this->_endPage - this->_startPage);
}
uint8_t RectangleShadow::read(uint24_t addr) const
@@ -34,7 +34,7 @@ namespace ComSquare::Memory
return this->_initial->write(addr, data);
}
RectangleShadow *RectangleShadow::setBankOffset(uint8_t bankOffset)
RectangleShadow *RectangleShadow::setBankOffset(int bankOffset)
{
this->_bankOffset = bankOffset;
return this;

5
sources/Memory/RectangleShadow.hpp
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@@ -15,7 +15,7 @@ namespace ComSquare::Memory
//! @brief Memory to shadow from.
std::shared_ptr<IMemory> _initial;
//! @brief The number of banks to add to the memory before accessing it from the initial data.
uint8_t _bankOffset = 0;
int _bankOffset = 0;
public:
//! @brief Create a shadow for the memory given as parameter.
explicit RectangleShadow(std::shared_ptr<IMemory> initial, uint8_t startBank, uint8_t endBank, uint16_t startPage, uint16_t endPage);
@@ -52,6 +52,7 @@ namespace ComSquare::Memory
//! @return nullptr if isMirror is false, the source otherwise.
std::shared_ptr<IMemory> getMirrored() const override;
RectangleShadow *setBankOffset(uint8_t bankOffset);
//! @brief Set the number of bank this component do not shadow. Referring to the first byte of this component will refer to the first byte of the bank at (bankOffset + start of initial memory).
RectangleShadow *setBankOffset(int bankOffset);
};
}

4
tests/CPU/testDMA.cpp
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@@ -13,8 +13,8 @@ Test(DMA, RomToVRAM)
snes.cartridge->_size = 4000000;
snes.cartridge->_data = new uint8_t[snes.cartridge->_size];
for (unsigned i = 0; i < 0x400; i++) {
snes.cartridge->_data[0x9bded + i * 2] = i;
snes.cartridge->_data[0x9bded + i * 2 + 1] = i >> 8;
snes.cartridge->_data[0x9be00 + i * 2] = i;
snes.cartridge->_data[0x9be00 + i * 2 + 1] = i >> 8;
}
// Transferring $800 bytes from ROM ($13BE00) to VRam ($2000) via DMA channel 0

16
tests/testRectangleMemory.cpp
View File

@@ -12,7 +12,7 @@ using namespace ComSquare;
Test(RectangleMemory, HorizontalRamRead)
{
Ram::Ram ram(0xFF, Component::Rom, "Rom");
ram.setMemoryRegion(0x00, 0xFF, 0x0000, 0x0001);
ram.setMemoryRegion(0x00, 0xFF, 0x0000, 0x0000);
for (int i = 0x00; i < 0xFF; i++)
ram._data[i] = i;
for (uint24_t i = 0x000000; i < 0xFF0000; i += 0x010000) {
@@ -24,7 +24,7 @@ Test(RectangleMemory, HorizontalRamRead)
Test(RectangleMemory, HorizontalRamWrite)
{
Ram::Ram ram(0xFF, Component::Rom, "Rom");
ram.setMemoryRegion(0x00, 0xFF, 0x0000, 0x0001);
ram.setMemoryRegion(0x00, 0xFF, 0x0000, 0x0000);
for (uint24_t i = 0x000000; i < 0xFF0000; i += 0x010000)
ram.write(ram.getRelativeAddress(i), i >> 16u);
for (int i = 0x00; i < 0xFF; i++)
@@ -34,7 +34,7 @@ Test(RectangleMemory, HorizontalRamWrite)
Test(RectangleMemory, DualLineRamRead)
{
Ram::Ram ram(0xFF * 2, Component::Rom, "Rom");
ram.setMemoryRegion(0x00, 0xFF, 0x0000, 0x0002);
ram.setMemoryRegion(0x00, 0xFF, 0x0000, 0x0001);
for (int i = 0x00; i < 0xFF * 2; i++)
ram._data[i] = i;
for (uint24_t i = 0x000000, v = 0; v < 0xFF * 2; i += 0x010000, v += 2) {
@@ -48,8 +48,8 @@ Test(RectangleMemory, DualLineRamRead)
Test(RectangleMemory, HorizontalRamShadowRead)
{
std::shared_ptr<Ram::Ram> ram = std::make_shared<Ram::Ram>(0xFF, Component::Rom, "Rom");
ram->setMemoryRegion(0x00, 0xFF, 0x0000, 0x0001);
Memory::RectangleShadow shadow(ram, 0x00, 0xFF, 0x8000, 0x8001);
ram->setMemoryRegion(0x00, 0xFF, 0x0000, 0x0000);
Memory::RectangleShadow shadow(ram, 0x00, 0xFF, 0x8000, 0x8000);
for (int i = 0x00; i < 0xFF; i++)
ram->_data[i] = i;
for (uint24_t i = 0x008000; i < 0xFF8000; i += 0x010000) {
@@ -60,8 +60,8 @@ Test(RectangleMemory, HorizontalRamShadowRead)
Test(RectangleMemory, HorizontalRamShadowReadWithBankOffset)
{
std::shared_ptr<Ram::Ram> ram = std::make_shared<Ram::Ram>(0xFF, Component::Rom, "Rom");
ram->setMemoryRegion(0x00, 0xFF, 0x0000, 0x0001);
Memory::RectangleShadow shadow(ram, 0x80, 0xFF, 0x8000, 0x8001);
ram->setMemoryRegion(0x00, 0xFF, 0x0000, 0x0000);
Memory::RectangleShadow shadow(ram, 0x80, 0xFF, 0x8000, 0x8000);
for (int i = 0x00; i < 0xFF; i++)
ram->_data[i] = i;
shadow.setBankOffset(0x80);
@@ -79,7 +79,7 @@ Test(RectangleMemory, ShadowOffsetCartridge)
for (int i = 0x00; i < 0x3fff80; i++)
ram->_data[i] = i;
shadow.setBankOffset(0x40);
for (uint24_t i = 0xC00000; i < 0xEF7FFF; i += 0x1) {
for (uint24_t i = 0xC00000; i <= 0xEF7FFF; i += 0x1) {
if ((uint16_t)i > 0x7FFFu)
i += 0x010000 - 0x8000;
uint8_t v = shadow.read(shadow.getRelativeAddress(i));