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System: Implement CPU overclocking [SAVEVERSION+]

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Partial credit to @CookiePLMonster as well.
This commit is contained in:
Connor McLaughlin
2020-09-29 23:29:28 +10:00
parent 8f9f039665
commit 27697d0508
19 changed files with 249 additions and 36 deletions
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6
src/core/spu.h
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@ -2,6 +2,7 @@
#include "common/bitfield.h"
#include "common/fifo_queue.h"
#include "types.h"
#include "system.h"
#include <array>
#include <memory>
@ -20,6 +21,7 @@ public:
~SPU();
void Initialize();
void CPUClockChanged();
void Shutdown();
void Reset();
bool DoState(StateWrapper& sw);
@ -54,7 +56,7 @@ private:
static constexpr u32 VOICE_ADDRESS_SHIFT = 3;
static constexpr u32 NUM_SAMPLES_PER_ADPCM_BLOCK = 28;
static constexpr u32 SAMPLE_RATE = 44100;
static constexpr u32 SYSCLK_TICKS_PER_SPU_TICK = MASTER_CLOCK / SAMPLE_RATE; // 0x300
static constexpr u32 SYSCLK_TICKS_PER_SPU_TICK = System::MASTER_CLOCK / SAMPLE_RATE; // 0x300
static constexpr s16 ENVELOPE_MIN_VOLUME = 0;
static constexpr s16 ENVELOPE_MAX_VOLUME = 0x7FFF;
static constexpr u32 CAPTURE_BUFFER_SIZE_PER_CHANNEL = 0x400;
@ -370,6 +372,8 @@ private:
std::unique_ptr<TimingEvent> m_transfer_event;
std::unique_ptr<Common::WAVWriter> m_dump_writer;
TickCount m_ticks_carry = 0;
TickCount m_cpu_ticks_per_spu_tick = 0;
TickCount m_cpu_tick_divider = 0;
SPUCNT m_SPUCNT = {};
SPUSTAT m_SPUSTAT = {};