Duckstation/src/core/sio.h
2019-12-09 00:52:00 +10:00

84 lines
1.9 KiB
C++

#pragma once
#include "common/bitfield.h"
#include "common/fifo_queue.h"
#include "types.h"
#include <array>
#include <memory>
class StateWrapper;
class System;
class InterruptController;
class Controller;
class MemoryCard;
class SIO
{
public:
SIO();
~SIO();
void Initialize(System* system, InterruptController* interrupt_controller);
void Reset();
bool DoState(StateWrapper& sw);
u32 ReadRegister(u32 offset);
void WriteRegister(u32 offset, u32 value);
private:
union SIO_CTRL
{
u16 bits;
BitField<u16, bool, 0, 1> TXEN;
BitField<u16, bool, 1, 1> DTROUTPUT;
BitField<u16, bool, 2, 1> RXEN;
BitField<u16, bool, 3, 1> TXOUTPUT;
BitField<u16, bool, 4, 1> ACK;
BitField<u16, bool, 5, 1> RTSOUTPUT;
BitField<u16, bool, 6, 1> RESET;
BitField<u16, u8, 8, 2> RXIMODE;
BitField<u16, bool, 10, 1> TXINTEN;
BitField<u16, bool, 11, 1> RXINTEN;
BitField<u16, bool, 12, 1> ACKINTEN;
};
union SIO_STAT
{
u32 bits;
BitField<u32, bool, 0, 1> TXRDY;
BitField<u32, bool, 1, 1> RXFIFONEMPTY;
BitField<u32, bool, 2, 1> TXDONE;
BitField<u32, bool, 3, 1> RXPARITY;
BitField<u32, bool, 4, 1> RXFIFOOVERRUN;
BitField<u32, bool, 5, 1> RXBADSTOPBIT;
BitField<u32, bool, 6, 1> RXINPUTLEVEL;
BitField<u32, bool, 7, 1> DSRINPUTLEVEL;
BitField<u32, bool, 8, 1> CTSINPUTLEVEL;
BitField<u32, bool, 9, 1> INTR;
BitField<u32, u32, 11, 15> TMR;
};
union SIO_MODE
{
u16 bits;
BitField<u16, u8, 0, 2> reload_factor;
BitField<u16, u8, 2, 2> character_length;
BitField<u16, bool, 4, 1> parity_enable;
BitField<u16, u8, 5, 1> parity_type;
BitField<u16, u8, 6, 2> stop_bit_length;
};
void SoftReset();
System* m_system = nullptr;
InterruptController* m_interrupt_controller = nullptr;
SIO_CTRL m_SIO_CTRL = {};
SIO_STAT m_SIO_STAT = {};
SIO_MODE m_SIO_MODE = {};
u16 m_SIO_BAUD = 0;
};