yaze::emu::Snes Class Reference

#include <snes.h>

Public Member Functions
	Snes ()=default
	~Snes ()=default
void	Init (std::vector< uint8_t > &rom_data)
void	Reset (bool hard=false)
void	RunFrame ()
void	CatchUpApu ()
void	HandleInput ()
void	RunCycle ()
void	RunCycles (int cycles)
void	SyncCycles (bool start, int sync_cycles)
uint8_t	ReadBBus (uint8_t adr)
uint8_t	ReadReg (uint16_t adr)
uint8_t	Rread (uint32_t adr)
uint8_t	Read (uint32_t adr)
void	WriteBBus (uint8_t adr, uint8_t val)
void	WriteReg (uint16_t adr, uint8_t val)
void	Write (uint32_t adr, uint8_t val)
int	GetAccessTime (uint32_t adr)
uint8_t	CpuRead (uint32_t adr)
void	CpuWrite (uint32_t adr, uint8_t val)
void	CpuIdle (bool waiting)
void	InitAccessTime (bool recalc)
void	SetSamples (int16_t *sample_data, int wanted_samples)
void	SetPixels (uint8_t *pixel_data)
void	SetButtonState (int player, int button, bool pressed)
bool	running () const
auto	cpu () -> Cpu &
auto	ppu () -> Ppu &
auto	apu () -> Apu &
auto	Memory () -> MemoryImpl &
auto	get_ram () -> uint8_t *
auto	mutable_cycles () -> uint64_t &

Public Attributes
std::vector< uint8_t >	access_time

Private Attributes
MemoryImpl	memory_
CpuCallbacks	cpu_callbacks_
Cpu	cpu_ {memory_, cpu_callbacks_}
Ppu	ppu_ {memory_}
Apu	apu_ {memory_}
std::vector< uint8_t >	rom_data
bool	running_ = false
uint8_t	ram [0x20000]
uint32_t	ram_adr_
uint32_t	frames_ = 0
uint64_t	cycles_ = 0
uint64_t	sync_cycle_ = 0
double	apu_catchup_cycles_
uint32_t	next_horiz_event
bool	h_irq_enabled_ = false
bool	v_irq_enabled_ = false
bool	nmi_enabled_ = false
uint16_t	h_timer_ = 0
uint16_t	v_timer_ = 0
bool	in_nmi_ = false
bool	irq_condition_ = false
bool	in_irq_ = false
bool	in_vblank_
uint8_t	multiply_a_
uint16_t	multiply_result_
uint16_t	divide_a_
uint16_t	divide_result_
Input	input1
Input	input2
uint16_t	port_auto_read_ [4]
bool	auto_joy_read_ = false
uint16_t	auto_joy_timer_ = 0
bool	ppu_latch_
bool	fast_mem_ = false

Detailed Description

Definition at line 22 of file snes.h.

Constructor & Destructor Documentation

Snes()

yaze::emu::Snes::Snes ( )

default

~Snes()

yaze::emu::Snes::~Snes ( )

default

References rom_data.

Member Function Documentation

Init()

void yaze::emu::Snes::Init

(

std::vector< uint8_t > &

rom_data

)

Definition at line 28 of file snes.cc.

References apu_, memory_, ppu_, Reset(), rom_data, and running_.

Referenced by main().

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Reset()

void yaze::emu::Snes::Reset

(

bool

hard = false

)

Definition at line 40 of file snes.cc.

References apu_, apu_catchup_cycles_, auto_joy_read_, auto_joy_timer_, cpu_, cycles_, divide_a_, divide_result_, fast_mem_, frames_, h_irq_enabled_, h_timer_, in_irq_, in_nmi_, in_vblank_, InitAccessTime(), input1, input2, irq_condition_, memory_, multiply_a_, multiply_result_, next_horiz_event, nmi_enabled_, port_auto_read_, ppu_, ppu_latch_, ram, ram_adr_, yaze::emu::ResetDma(), sync_cycle_, v_irq_enabled_, and v_timer_.

Referenced by Init().

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RunFrame()

void yaze::emu::Snes::RunFrame

(

)

Definition at line 80 of file snes.cc.

References cpu_, frames_, and in_vblank_.

Referenced by main().

CatchUpApu()

void yaze::emu::Snes::CatchUpApu

(

)

Definition at line 90 of file snes.cc.

References apu_, and cycles_.

Referenced by ReadBBus(), RunCycle(), and WriteBBus().

HandleInput()

void yaze::emu::Snes::HandleInput

(

)

Definition at line 92 of file snes.cc.

References input1, input2, and port_auto_read_.

Referenced by RunCycle().

RunCycle()

void yaze::emu::Snes::RunCycle

(

)

Todo

this starts a little after start of vblank

Definition at line 109 of file snes.cc.

References apu_, auto_joy_read_, auto_joy_timer_, CatchUpApu(), cpu_, cycles_, frames_, h_irq_enabled_, h_timer_, HandleInput(), in_irq_, in_nmi_, in_vblank_, irq_condition_, memory_, next_horiz_event, nmi_enabled_, ppu_, v_irq_enabled_, and v_timer_.

Referenced by RunCycles().

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RunCycles()

void yaze::emu::Snes::RunCycles

(

int

cycles

)

Definition at line 224 of file snes.cc.

References memory_, and RunCycle().

Referenced by CpuIdle(), CpuRead(), CpuWrite(), yaze::emu::DoHdma(), yaze::emu::InitHdma(), SyncCycles(), and yaze::emu::WaitCycle().

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SyncCycles()

void yaze::emu::Snes::SyncCycles	(	bool	start,
		int	sync_cycles )

Definition at line 234 of file snes.cc.

References cycles_, RunCycles(), and sync_cycle_.

Referenced by yaze::emu::DoDma(), yaze::emu::DoHdma(), and yaze::emu::InitHdma().

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ReadBBus()

uint8_t yaze::emu::Snes::ReadBBus

(

uint8_t

adr

)

Definition at line 245 of file snes.cc.

References apu_, CatchUpApu(), memory_, ppu_, ppu_latch_, ram, and ram_adr_.

Referenced by Rread(), and yaze::emu::TransferByte().

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ReadReg()

uint8_t yaze::emu::Snes::ReadReg

(

uint16_t

adr

)

Definition at line 261 of file snes.cc.

References auto_joy_timer_, cpu_, divide_result_, in_irq_, in_nmi_, in_vblank_, memory_, multiply_result_, port_auto_read_, and ppu_latch_.

Referenced by Rread().

Rread()

uint8_t yaze::emu::Snes::Rread

(

uint32_t

adr

)

Definition at line 314 of file snes.cc.

References input1, input2, memory_, ram, ReadBBus(), yaze::emu::ReadDma(), and ReadReg().

Referenced by Read().

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Read()

uint8_t yaze::emu::Snes::Read

(

uint32_t

adr

)

Definition at line 344 of file snes.cc.

References memory_, and Rread().

Referenced by CpuRead(), yaze::emu::DoHdma(), yaze::emu::InitHdma(), and yaze::emu::TransferByte().

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WriteBBus()

void yaze::emu::Snes::WriteBBus	(	uint8_t	adr,
		uint8_t	val )

Definition at line 350 of file snes.cc.

References apu_, CatchUpApu(), ppu_, ram, and ram_adr_.

Referenced by yaze::emu::TransferByte(), and Write().

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WriteReg()

void yaze::emu::Snes::WriteReg	(	uint16_t	adr,
		uint8_t	val )

Definition at line 381 of file snes.cc.

References auto_joy_read_, auto_joy_timer_, cpu_, divide_a_, divide_result_, fast_mem_, h_irq_enabled_, h_timer_, in_irq_, in_nmi_, memory_, multiply_a_, multiply_result_, nmi_enabled_, ppu_, ppu_latch_, yaze::emu::StartDma(), v_irq_enabled_, and v_timer_.

Referenced by Write().

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Write()

void yaze::emu::Snes::Write	(	uint32_t	adr,
		uint8_t	val )

Definition at line 468 of file snes.cc.

References input1, input2, memory_, ram, WriteBBus(), yaze::emu::WriteDma(), and WriteReg().

Referenced by CpuWrite(), and yaze::emu::TransferByte().

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GetAccessTime()

int yaze::emu::Snes::GetAccessTime

(

uint32_t

adr

)

Definition at line 498 of file snes.cc.

References fast_mem_.

Referenced by InitAccessTime().

CpuRead()

uint8_t yaze::emu::Snes::CpuRead

(

uint32_t

adr

)

Definition at line 512 of file snes.cc.

References access_time, cpu_, yaze::emu::HandleDma(), memory_, Read(), and RunCycles().

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CpuWrite()

void yaze::emu::Snes::CpuWrite	(	uint32_t	adr,
		uint8_t	val )

Definition at line 523 of file snes.cc.

References access_time, cpu_, yaze::emu::HandleDma(), memory_, RunCycles(), and Write().

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CpuIdle()

void yaze::emu::Snes::CpuIdle

(

bool

waiting

)

Definition at line 531 of file snes.cc.

References cpu_, yaze::emu::HandleDma(), memory_, and RunCycles().

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InitAccessTime()

void yaze::emu::Snes::InitAccessTime

(

bool

recalc

)

Definition at line 560 of file snes.cc.

References access_time, and GetAccessTime().

Referenced by Reset().

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SetSamples()

void yaze::emu::Snes::SetSamples	(	int16_t *	sample_data,
		int	wanted_samples )

Definition at line 537 of file snes.cc.

References apu_, and memory_.

Referenced by main().

SetPixels()

void yaze::emu::Snes::SetPixels

(

uint8_t *

pixel_data

)

Definition at line 541 of file snes.cc.

References ppu_.

Referenced by main().

SetButtonState()

void yaze::emu::Snes::SetButtonState	(	int	player,
		int	button,
		bool	pressed )

Definition at line 543 of file snes.cc.

References input1, and input2.

running()

bool yaze::emu::Snes::running ( ) const

inline

Definition at line 56 of file snes.h.

References running_.

cpu()

auto yaze::emu::Snes::cpu ( ) -> Cpu&

inline

Definition at line 57 of file snes.h.

References cpu_.

Referenced by yaze::emu::DoDma(), yaze::emu::DoHdma(), and yaze::emu::InitHdma().

ppu()

auto yaze::emu::Snes::ppu ( ) -> Ppu&

inline

Definition at line 58 of file snes.h.

References ppu_.

apu()

auto yaze::emu::Snes::apu ( ) -> Apu&

inline

Definition at line 59 of file snes.h.

References apu_.

Memory()

auto yaze::emu::Snes::Memory ( ) -> MemoryImpl&

inline

Definition at line 60 of file snes.h.

References memory_.

Referenced by main().

get_ram()

auto yaze::emu::Snes::get_ram ( ) -> uint8_t*

inline

Definition at line 61 of file snes.h.

References ram.

mutable_cycles()

auto yaze::emu::Snes::mutable_cycles ( ) -> uint64_t&

inline

Definition at line 62 of file snes.h.

References cycles_.

Member Data Documentation

access_time

std::vector<uint8_t> yaze::emu::Snes::access_time

Definition at line 50 of file snes.h.

Referenced by CpuRead(), CpuWrite(), and InitAccessTime().

memory_

MemoryImpl yaze::emu::Snes::memory_

private

Definition at line 65 of file snes.h.

Referenced by CpuIdle(), CpuRead(), CpuWrite(), Init(), Memory(), Read(), ReadBBus(), ReadReg(), Reset(), Rread(), RunCycle(), RunCycles(), SetSamples(), Write(), and WriteReg().

cpu_callbacks_

CpuCallbacks yaze::emu::Snes::cpu_callbacks_

private

Initial value:

= {
      [&](uint32_t adr) { return CpuRead(adr); },
      [&](uint32_t adr, uint8_t val) { CpuWrite(adr, val); },
      [&](bool waiting) { CpuIdle(waiting); },
  }

Definition at line 66 of file snes.h.

cpu_

Cpu yaze::emu::Snes::cpu_ {memory_, cpu_callbacks_}

private

Definition at line 71 of file snes.h.

Referenced by cpu(), CpuIdle(), CpuRead(), CpuWrite(), ReadReg(), Reset(), RunCycle(), RunFrame(), and WriteReg().

ppu_

Ppu yaze::emu::Snes::ppu_ {memory_}

private

Definition at line 72 of file snes.h.

Referenced by Init(), ppu(), ReadBBus(), Reset(), RunCycle(), SetPixels(), WriteBBus(), and WriteReg().

apu_

Apu yaze::emu::Snes::apu_ {memory_}

private

Definition at line 73 of file snes.h.

Referenced by apu(), CatchUpApu(), Init(), ReadBBus(), Reset(), RunCycle(), SetSamples(), and WriteBBus().

rom_data

std::vector<uint8_t> yaze::emu::Snes::rom_data

private

Definition at line 75 of file snes.h.

Referenced by Init(), and ~Snes().

running_

bool yaze::emu::Snes::running_ = false

private

Definition at line 77 of file snes.h.

Referenced by Init(), and running().

ram

uint8_t yaze::emu::Snes::ram[0x20000]

private

Definition at line 80 of file snes.h.

Referenced by get_ram(), ReadBBus(), Reset(), Rread(), Write(), and WriteBBus().

ram_adr_

uint32_t yaze::emu::Snes::ram_adr_

private

Definition at line 81 of file snes.h.

Referenced by ReadBBus(), Reset(), and WriteBBus().

frames_

uint32_t yaze::emu::Snes::frames_ = 0

private

Definition at line 84 of file snes.h.

Referenced by Reset(), RunCycle(), and RunFrame().

cycles_

uint64_t yaze::emu::Snes::cycles_ = 0

private

Definition at line 85 of file snes.h.

Referenced by CatchUpApu(), mutable_cycles(), Reset(), RunCycle(), and SyncCycles().

sync_cycle_

uint64_t yaze::emu::Snes::sync_cycle_ = 0

private

Definition at line 86 of file snes.h.

Referenced by Reset(), and SyncCycles().

apu_catchup_cycles_

double yaze::emu::Snes::apu_catchup_cycles_

private

Definition at line 87 of file snes.h.

Referenced by Reset().

next_horiz_event

uint32_t yaze::emu::Snes::next_horiz_event

private

Definition at line 88 of file snes.h.

Referenced by Reset(), and RunCycle().

h_irq_enabled_

bool yaze::emu::Snes::h_irq_enabled_ = false

private

Definition at line 91 of file snes.h.

Referenced by Reset(), RunCycle(), and WriteReg().

v_irq_enabled_

bool yaze::emu::Snes::v_irq_enabled_ = false

private

Definition at line 92 of file snes.h.

Referenced by Reset(), RunCycle(), and WriteReg().

nmi_enabled_

bool yaze::emu::Snes::nmi_enabled_ = false

private

Definition at line 93 of file snes.h.

Referenced by Reset(), RunCycle(), and WriteReg().

h_timer_

uint16_t yaze::emu::Snes::h_timer_ = 0

private

Definition at line 94 of file snes.h.

Referenced by Reset(), RunCycle(), and WriteReg().

v_timer_

uint16_t yaze::emu::Snes::v_timer_ = 0

private

Definition at line 95 of file snes.h.

Referenced by Reset(), RunCycle(), and WriteReg().

in_nmi_

bool yaze::emu::Snes::in_nmi_ = false

private

Definition at line 96 of file snes.h.

Referenced by ReadReg(), Reset(), RunCycle(), and WriteReg().

irq_condition_

bool yaze::emu::Snes::irq_condition_ = false

private

Definition at line 97 of file snes.h.

Referenced by Reset(), and RunCycle().

in_irq_

bool yaze::emu::Snes::in_irq_ = false

private

Definition at line 98 of file snes.h.

Referenced by ReadReg(), Reset(), RunCycle(), and WriteReg().

in_vblank_

bool yaze::emu::Snes::in_vblank_

private

Definition at line 99 of file snes.h.

Referenced by ReadReg(), Reset(), RunCycle(), and RunFrame().

multiply_a_

uint8_t yaze::emu::Snes::multiply_a_

private

Definition at line 102 of file snes.h.

Referenced by Reset(), and WriteReg().

multiply_result_

uint16_t yaze::emu::Snes::multiply_result_

private

Definition at line 103 of file snes.h.

Referenced by ReadReg(), Reset(), and WriteReg().

divide_a_

uint16_t yaze::emu::Snes::divide_a_

private

Definition at line 104 of file snes.h.

Referenced by Reset(), and WriteReg().

divide_result_

uint16_t yaze::emu::Snes::divide_result_

private

Definition at line 105 of file snes.h.

Referenced by ReadReg(), Reset(), and WriteReg().

input1

Input yaze::emu::Snes::input1

private

Definition at line 108 of file snes.h.

Referenced by HandleInput(), Reset(), Rread(), SetButtonState(), and Write().

input2

Input yaze::emu::Snes::input2

private

Definition at line 109 of file snes.h.

Referenced by HandleInput(), Reset(), Rread(), SetButtonState(), and Write().

port_auto_read_

uint16_t yaze::emu::Snes::port_auto_read_[4]

private

Definition at line 110 of file snes.h.

Referenced by HandleInput(), ReadReg(), and Reset().

auto_joy_read_

bool yaze::emu::Snes::auto_joy_read_ = false

private

Definition at line 111 of file snes.h.

Referenced by Reset(), RunCycle(), and WriteReg().

auto_joy_timer_

uint16_t yaze::emu::Snes::auto_joy_timer_ = 0

private

Definition at line 112 of file snes.h.

Referenced by ReadReg(), Reset(), RunCycle(), and WriteReg().

ppu_latch_

bool yaze::emu::Snes::ppu_latch_

private

Definition at line 113 of file snes.h.

Referenced by ReadBBus(), ReadReg(), Reset(), and WriteReg().

fast_mem_

bool yaze::emu::Snes::fast_mem_ = false

private

Definition at line 115 of file snes.h.

Referenced by GetAccessTime(), Reset(), and WriteReg().

---

The documentation for this class was generated from the following files:

• src/app/emu/snes.h
• src/app/emu/snes.cc