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Create a solid white rectangle.

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This commit is contained in:
Thomas Harte 2023-11-22 13:18:39 -05:00
parent 80b2ccd418
commit 12179e486f
1 changed files with 42 additions and 12 deletions
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54
Machines/PCCompatible/PCCompatible.cpp
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@ -37,13 +37,7 @@ namespace PCCompatible {
class MDA {
public:
MDA() :
crtc_(Motorola::CRTC::Personality::HD6845S, outputter_),
crt_(873, 9, 382, 3, Outputs::Display::InputDataType::Luminance1)
{
crt_.set_visible_area(Outputs::Display::Rect(0.1072f, 0.1f, 0.842105263157895f, 0.842105263157895f));
crt_.set_display_type(Outputs::Display::DisplayType::CompositeMonochrome);
}
MDA() : crtc_(Motorola::CRTC::Personality::HD6845S, outputter_) {}
void run_for(Cycles cycles) {
// I _think_ the MDA's CRTC is clocked at 14/9ths the PIT clock.
@ -79,22 +73,58 @@ class MDA {
// MARK: - Call-ins for ScanProducer.
void set_scan_target(Outputs::Display::ScanTarget *scan_target) {
crt_.set_scan_target(scan_target);
outputter_.crt.set_scan_target(scan_target);
}
Outputs::Display::ScanStatus get_scaled_scan_status() const {
return crt_.get_scaled_scan_status() / 4.0f;
return outputter_.crt.get_scaled_scan_status() / 4.0f;
}
private:
struct CRTCOutputter {
void perform_bus_cycle_phase1(const Motorola::CRTC::BusState &) {
printf("");
CRTCOutputter() :
crt(882, 9, 382, 3, Outputs::Display::InputDataType::Luminance1)
{
// crt.set_visible_area(Outputs::Display::Rect(0.1072f, 0.1f, 0.842105263157895f, 0.842105263157895f));
crt.set_display_type(Outputs::Display::DisplayType::CompositeMonochrome);
}
void perform_bus_cycle_phase1(const Motorola::CRTC::BusState &state) {
const OutputState new_state =
(state.hsync | state.vsync) ? OutputState::Sync :
(state.display_enable ? OutputState::Pixels : OutputState::Border);
if(new_state != output_state) {
switch(output_state) {
case OutputState::Sync:
crt.output_sync(count);
break;
case OutputState::Border:
case OutputState::Pixels: {
uint8_t *const target = crt.begin_data(1);
if(target) {
target[0] = (output_state == OutputState::Border) ? 0x00 : 0xff;
}
crt.output_level(count);
} break;
}
output_state = new_state;
count = 0;
}
count += 9;
}
void perform_bus_cycle_phase2(const Motorola::CRTC::BusState &) {}
Outputs::CRT::CRT crt;
enum class OutputState {
Sync, Pixels, Border
} output_state = OutputState::Sync;
int count = 0;
} outputter_;
Motorola::CRTC::CRTC6845<CRTCOutputter> crtc_;
Outputs::CRT::CRT crt_;
int full_clock_;
};