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Fixing the DMA test

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This commit is contained in:
Zoe Roux
2021-02-03 17:44:02 +01:00
parent 71096ded7c
commit 2d83137b40
1 changed files with 22 additions and 8 deletions
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tests/CPU/testDMA.cpp
+22 -8
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@@ -12,16 +12,15 @@ Test(DMA, RomToVRAM)
Init()
snes.cartridge->_size = 4000000;
snes.cartridge->_data = new uint8_t[snes.cartridge->_size];
for(unsigned i = 0; i < 0x400; i++) {
snes.cartridge->_data[0xBE00 + i * 2] = i >> 8;
snes.cartridge->_data[0xBE00 + i * 2 + 1] = i;
uint16_t value = snes.cartridge->_data[0xBE00 + i * 2] | (snes.cartridge->_data[0xBE00 + i * 2 + 1] << 8);
std::cout << std::hex << 0xBE00 + i << ": " << value << std::endl;
for (unsigned i = 0; i < 0x400; i++) {
snes.cartridge->_data[0xBDED + i * 2] = i;
snes.cartridge->_data[0xBDED + i * 2 + 1] = i >> 8;
}
// Transferring $800 bytes from ROM ($13BE00) to VRam ($2000) via DMA channel 0
// Setting VRam address (since this is an indirect write)
snes.bus->write(0x2115, 0b10000000);
snes.bus->write(0x2117, 0x20);
snes.bus->write(0x2116, 0);
@@ -52,10 +51,8 @@ Test(DMA, RomToVRAM)
cr_assert_eq(snes.cpu->_dmaChannels[0]._port, 0x18, "The dma count should be $18 but it was $%x.", snes.cpu->_dmaChannels[0]._port);
cr_assert_eq(snes.ppu->_registers._vmadd.vmadd, 0x2400, "The vram address should be $2400 but it was %x.", snes.ppu->_registers._vmadd.vmadd);
for(unsigned i = 0; i < 0x400; i++) {
// TODO check endianess
uint16_t value = snes.ppu->vram->_data[0x2000 * 2 + i * 2] | (snes.ppu->vram->_data[0x2000 * 2 + i * 2 + 1] << 8);
std::cout << std::hex << 0x2000 + i << ": " << value << std::endl;
// cr_assert_eq(value, i, "The memory at %x should be %x but it was %x", 0x2000 + i, i, snes.ppu->vram->_data[i]);
cr_assert_eq(value, i, "The memory at %x should be %x but it was %x", 0x2000 + i, i, snes.ppu->vram->_data[i]);
}
}
@@ -73,4 +70,21 @@ Test(DMA, VramWrite)
uint16_t value = snes.ppu->vram->_data[0x2000 * 2 + i * 2] | (snes.ppu->vram->_data[0x2000 * 2 + i * 2 + 1] << 8);
cr_assert_eq(value, (uint16_t)i, "The memory at %x should be %x but it was %x", 0x2000 + i, (uint16_t)i, value);
}
}
Test(DMA, VramWriteInvertedOrder)
{
Init()
snes.bus->write(0x2115, 0b10000000);
snes.bus->write(0x2117, 0x20);
snes.bus->write(0x2116, 0x0);
for (unsigned i = 0; i < 0x400; i++) {
snes.bus->write(0x2118, i);
snes.bus->write(0x2119, i >> 8);
cr_assert_eq(snes.ppu->_registers._vmadd.vmadd, 0x2001 + i, "The vram address was %x but it should have been %x", snes.ppu->_registers._vmadd.vmadd, 0x2001 + i);
}
for(unsigned i = 0; i < 0x400; i++) {
uint16_t value = snes.ppu->vram->_data[0x2000 * 2 + i * 2] | (snes.ppu->vram->_data[0x2000 * 2 + i * 2 + 1] << 8);
cr_assert_eq(value, (uint16_t)i, "The memory at %x should be %x but it was %x", 0x2000 + i, (uint16_t)i, value);
}
}