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Starts to bring sprites inside DMADevice orthodoxy.

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This commit is contained in:
Thomas Harte 2021-10-21 21:57:46 -07:00
parent c3c84c88a1
commit e67de90ad0
2 changed files with 33 additions and 18 deletions
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33
Machines/Amiga/Chipset.cpp
View File

@ -33,20 +33,28 @@ template <DMAFlag... Flags> struct DMAMask: Mask<DMAFlag, Flags...> {};
}
#define DMA_CONSTRUCT *this, reinterpret_cast<uint16_t *>(map.chip_ram.data()), map.chip_ram.size() >> 1
Chipset::Chipset(MemoryMap &map, int input_clock_rate) :
blitter_(*this, reinterpret_cast<uint16_t *>(map.chip_ram.data()), map.chip_ram.size() >> 1),
bitplanes_(*this, reinterpret_cast<uint16_t *>(map.chip_ram.data()), map.chip_ram.size() >> 1),
copper_(*this, reinterpret_cast<uint16_t *>(map.chip_ram.data()), map.chip_ram.size() >> 1),
blitter_(DMA_CONSTRUCT),
sprites_{
{DMA_CONSTRUCT}, {DMA_CONSTRUCT}, {DMA_CONSTRUCT}, {DMA_CONSTRUCT},
{DMA_CONSTRUCT}, {DMA_CONSTRUCT}, {DMA_CONSTRUCT}, {DMA_CONSTRUCT}
},
bitplanes_(DMA_CONSTRUCT),
copper_(DMA_CONSTRUCT),
crt_(908, 4, Outputs::Display::Type::PAL50, Outputs::Display::InputDataType::Red4Green4Blue4),
cia_a_handler_(map, disk_controller_),
cia_b_handler_(disk_controller_),
cia_a(cia_a_handler_),
cia_b(cia_b_handler_),
disk_(*this, reinterpret_cast<uint16_t *>(map.chip_ram.data()), map.chip_ram.size() >> 1),
disk_(DMA_CONSTRUCT),
disk_controller_(Cycles(input_clock_rate), *this, disk_, cia_b) {
disk_controller_.set_clocking_hint_observer(this);
}
#undef DMA_CONSTRUCT
Chipset::Changes Chipset::run_for(HalfCycles length) {
return run<false>(length);
}
@ -781,8 +789,8 @@ void Chipset::perform(const CPU::MC68000::Microcycle &cycle) {
// Sprites.
#define Sprite(index, pointer, position) \
case Write(pointer + 0): sprites_[index].set_pointer(16, cycle.value16()); break; \
case Write(pointer + 2): sprites_[index].set_pointer(0, cycle.value16()); break; \
case Write(pointer + 0): sprites_[index].set_pointer<0, 16>(cycle.value16()); break; \
case Write(pointer + 2): sprites_[index].set_pointer<0, 0>(cycle.value16()); break; \
case Write(position + 0): sprites_[index].set_start_position(cycle.value16()); break; \
case Write(position + 2): sprites_[index].set_stop_and_control(cycle.value16()); break; \
case Write(position + 4): sprites_[index].set_image_data(0, cycle.value16()); break; \
@ -900,20 +908,19 @@ void Chipset::Bitplanes::set_control(uint16_t control) {
// MARK: - Sprites.
void Chipset::Sprite::set_pointer(int shift, uint16_t value) {
LOG("Sprite pointer with shift " << std::dec << shift << " to " << PADHEX(4) << value);
}
void Chipset::Sprite::set_start_position(uint16_t value) {
LOG("Sprite start position " << PADHEX(4) << value);
v_start_ = (v_start_ & 0xff00) | (value >> 8);
h_start_ = (h_start_ & 0xff00) | ((value & 0xff));
}
void Chipset::Sprite::set_stop_and_control(uint16_t value) {
LOG("Sprite stop and control " << PADHEX(4) << value);
h_start_ = uint16_t((h_start_ & 0x00ff) | ((value & 0x01) << 8));
v_stop_ = uint16_t((value >> 8) | ((value & 0x02) << 7));
v_start_ = uint16_t((v_start_ & 0x00ff) | ((value & 0x04) << 6));
}
void Chipset::Sprite::set_image_data(int slot, uint16_t value) {
LOG("Sprite image data " << slot << " to " << PADHEX(4) << value);
data_[slot] = value;
}
// MARK: - Disk.

18
Machines/Amiga/Chipset.hpp
View File

@ -124,11 +124,19 @@ class Chipset: private ClockingHint::Observer {
// MARK: - Sprites.
struct Sprite {
void set_pointer(int shift, uint16_t value);
void set_start_position(uint16_t value);
void set_stop_and_control(uint16_t value);
void set_image_data(int slot, uint16_t value);
class Sprite: public DMADevice<1> {
public:
using DMADevice::DMADevice;
void set_start_position(uint16_t value);
void set_stop_and_control(uint16_t value);
void set_image_data(int slot, uint16_t value);
bool advance(int slot);
private:
uint16_t v_start_ = 0, h_start_ = 0, v_stop_ = 0;
uint16_t data_[2]{};
} sprites_[8];
// MARK: - Raster position and state.