52 lines
1.2 KiB
C++
52 lines
1.2 KiB
C++
#include <cstdint> // uint32_t
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#include <string_view>
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#include "cpu.h"
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#include "emu.h"
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#include "ruc/file.h"
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#include "ruc/format/print.h"
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void Emu::init(uint32_t frequency, std::string_view bootrom)
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{
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m_frequency = frequency;
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m_timestep = 1.0 / m_frequency * 1000000;
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m_bootrom = ruc::File(bootrom.data()).data();
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}
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void Emu::update()
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{
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double time = m_timer.elapsedNanoseconds() / 1000.0;
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m_cycle_time += (time - m_previous_time);
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m_previous_time = time;
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if (m_cycle_time > m_timestep) {
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for (auto unit : m_processing_units) {
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if (m_cycle % (m_frequency / unit.second->frequency()) == 0) {
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unit.second->update();
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}
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}
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m_cycle_time -= m_timestep;
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m_cycle++;
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}
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}
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void Emu::addProcessingUnit(const char* name, ProcessingUnit* processing_unit)
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{
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m_processing_units.emplace(name, processing_unit);
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}
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void Emu::addMemorySpace(const char* name, uint32_t size)
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{
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std::vector<uint32_t> memory(size);
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m_memory_spaces.emplace(name, memory);
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}
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void Emu::writeMemory(const char* memory_space, uint32_t location, uint32_t value)
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{
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m_memory_spaces[memory_space][location] = value;
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}
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uint32_t Emu::readMemory(const char* memory_space, uint32_t location)
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{
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return m_memory_spaces[memory_space][location];
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}
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