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Add mouse position getter.

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This commit is contained in:
Thomas Harte 2024-05-11 13:07:12 -04:00
parent 6d42c9aaf9
commit c82517c9fd
2 changed files with 34 additions and 3 deletions
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3
Machines/Acorn/Archimedes/MemoryController.hpp
View File

@ -106,8 +106,9 @@ struct MemoryController {
case 0b111:
os_mode_ = address & (1 << 12);
sound_dma_enable_ = address & (1 << 11);
ioc_.sound().set_dma_enabled(sound_dma_enable_);
video_dma_enable_ = address & (1 << 10);
ioc_.sound().set_dma_enabled(sound_dma_enable_);
ioc_.video().set_dma_enabled(video_dma_enable_);
switch((address >> 8) & 3) {
default:
dynamic_ram_refresh_ = DynamicRAMRefresh::None;

34
Machines/Acorn/Archimedes/Video.hpp
View File

@ -15,6 +15,7 @@
#include <cassert>
#include <cstdint>
#include <cstring>
#include <optional>
namespace Archimedes {
@ -243,6 +244,30 @@ struct Video {
return overages_;
}
void set_dma_enabled(bool dma_enabled) {
dma_enabled_ = dma_enabled;
}
//
// The following is provided for input automation;
// it does not correlate with real hardware functionality.
//
std::optional<std::pair<uint32_t, uint32_t>> cursor_location() {
if(
!dma_enabled_ ||
vertical_timing_.cursor_end <= vertical_timing_.cursor_start ||
horizontal_timing_.cursor_start >= (horizontal_timing_.period * 2)
) {
return std::nullopt;
}
const auto horizontal_start = horizontal_timing_.display_start + horizontal_state_.output_latency(colour_depth_);
return std::make_pair(
horizontal_timing_.cursor_start + 6 - (horizontal_start * 2),
vertical_timing_.cursor_start - vertical_timing_.display_start);
}
private:
Log::Logger<Log::Source::ARMIOC> logger;
InterruptObserverT &interrupt_observer_;
@ -253,6 +278,7 @@ private:
// being deferred to the component itself.
const uint8_t *ram_ = nullptr;
Outputs::CRT::CRT crt_;
bool dma_enabled_ = false;
// Horizontal and vertical timing.
struct Timing {
@ -330,11 +356,12 @@ private:
}
bool is_outputting(Depth depth) const {
return position >= display_start + output_latencies[static_cast<uint32_t>(depth)] && position < display_end + output_latencies[static_cast<uint32_t>(depth)];
const auto latency = output_latency(depth);
return position >= display_start + latency && position < display_end + latency;
}
uint32_t output_cycle(Depth depth) const {
return position - display_start - output_latencies[static_cast<uint32_t>(depth)];
return position - display_start - output_latency(depth);
}
static constexpr uint32_t output_latencies[] = {
@ -343,6 +370,9 @@ private:
7 >> 1, // 4 bpp.
5 >> 1 // 8 bpp.
};
uint32_t output_latency(Depth depth) const {
return output_latencies[static_cast<uint32_t>(depth)];
}
static constexpr uint8_t SyncEnded = 0x1;
static constexpr uint8_t BorderStarted = 0x2;