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Adjust visible Y9938 area; clamp scrolled y; use proper mode 2 terminator.
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@ -55,7 +55,12 @@ Base<personality>::Base() :
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template <Personality personality>
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TMS9918<personality>::TMS9918() {
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this->crt_.set_display_type(Outputs::Display::DisplayType::RGB);
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this->crt_.set_visible_area(Outputs::Display::Rect(0.07f, 0.0375f, 0.875f, 0.875f));
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if constexpr (is_yamaha_vdp(personality)) {
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this->crt_.set_visible_area(Outputs::Display::Rect(0.07f, 0.065f, 0.875f, 0.875f));
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} else {
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this->crt_.set_visible_area(Outputs::Display::Rect(0.07f, 0.0375f, 0.875f, 0.875f));
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}
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// The TMS remains in-phase with the NTSC colour clock; this is an empirical measurement
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// intended to produce the correct relationship between the hard edges between pixels and
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@ -122,7 +127,7 @@ void Base<personality>::posit_sprite(LineBuffer &buffer, int sprite_number, int
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if(buffer.sprites_stopped) return;
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// A sprite Y of 208 means "don't scan the list any further".
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if(mode_timing_.allow_sprite_terminator && sprite_position == mode_timing_.sprite_terminator) {
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if(mode_timing_.allow_sprite_terminator && sprite_position == mode_timing_.sprite_terminator(buffer.screen_mode)) {
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buffer.sprites_stopped = true;
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return;
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}
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@ -220,13 +225,13 @@ void TMS9918<personality>::run_for(const HalfCycles cycles) {
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function<true>( \
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this->line_buffers_[this->fetch_pointer_.row], \
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this->line_buffers_[(this->fetch_pointer_.row + 1) % this->mode_timing_.total_lines], \
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this->fetch_pointer_.row + offset, \
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(this->fetch_pointer_.row + offset) & 0xff, \
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first_window, final_window); \
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} else { \
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function<false>( \
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this->line_buffers_[this->fetch_pointer_.row], \
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this->line_buffers_[(this->fetch_pointer_.row + 1) % this->mode_timing_.total_lines], \
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this->fetch_pointer_.row + offset, \
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(this->fetch_pointer_.row + offset) & 0xff, \
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first_window, final_window); \
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} \
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}
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@ -937,6 +942,8 @@ void Base<personality>::commit_register(int reg, uint8_t value) {
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// (e.g. a line of length 0).
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if(!Storage<personality>::command_ && (value >> 4)) {
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LOG("TODO: Yamaha command " << PADHEX(2) << +value);
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} else {
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LOG("Performing Yamaha command " << PADHEX(2) << +value);
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}
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// Seed timing information if a command was found.
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@ -182,7 +182,17 @@ template <Personality personality> struct Base: public Storage<personality> {
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// Enables or disabled the recognition of the sprite
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// list terminator, and sets the terminator value.
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bool allow_sprite_terminator = true;
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uint8_t sprite_terminator = 0xd0;
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uint8_t sprite_terminator(ScreenMode mode) {
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switch(mode) {
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default: return 0xd0;
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case ScreenMode::YamahaGraphics3:
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case ScreenMode::YamahaGraphics4:
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case ScreenMode::YamahaGraphics5:
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case ScreenMode::YamahaGraphics6:
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case ScreenMode::YamahaGraphics7:
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return 0xd8;
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}
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}
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} mode_timing_;
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uint8_t line_interrupt_target_ = 0xff;
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@ -357,9 +367,6 @@ template <Personality personality> struct Base: public Storage<personality> {
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// has yet to pass.
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if(queued_access_ == MemoryAccess::None || access_column < minimum_access_column_) {
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if constexpr (is_yamaha_vdp(personality)) {
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const uint8_t *const source = (Storage<personality>::command_context_.arguments & 0x10) ? Storage<personality>::expansion_ram_.data() : ram_.data();
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uint8_t *const destination = (Storage<personality>::command_context_.arguments & 0x20) ? Storage<personality>::expansion_ram_.data() : ram_.data();
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using CommandStep = typename Storage<personality>::CommandStep;
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if(
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@ -370,6 +377,8 @@ template <Personality personality> struct Base: public Storage<personality> {
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}
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auto &context = Storage<personality>::command_context_;
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const uint8_t *const source = (context.arguments & 0x10) ? Storage<personality>::expansion_ram_.data() : ram_.data();
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uint8_t *const destination = (context.arguments & 0x20) ? Storage<personality>::expansion_ram_.data() : ram_.data();
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switch(Storage<personality>::next_command_step_) {
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// Duplicative, but keeps the compiler happy.
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case CommandStep::None:
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