srctree

Johan parent 92428bba 1378f771 b6cb5499
Merge pull request #350 from johnor/clear-write-toggle

Clear write toggle when reading ppu status register

core/src/ppu.cpp added: 6, removed: 3, total 3

@@ -104,6 +104,7 @@ uint8_t Ppu::read_byte(uint16_t addr) {

if (addr == kPpuStatus) {

byte = registers_->status;

registers_->write_toggle = false;

clear_vblank_flag();

} else if (addr == kOamData) {

byte = oam_data_[registers_->oamaddr];

core/test/src/test_ppu.cpp added: 6, removed: 3, total 3

@@ -46,8 +46,10 @@ TEST_F(PpuTest, writes_to_mmu_for_unhandled_address) {

ppu->write_byte(0x1000, 0x45);

}

TEST_F(PpuTest, read_status_register) {

TEST_F(PpuTest, read_status_register_clears_write_toggle) {

registers.status = 0x25;

registers.write_toggle = true;

expected.write_toggle = false;

const uint8_t status = ppu->read_byte(0x2002);