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Pad: Delay ACK after receiving byte

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The controller routines in the BIOS seem to depend on this, if they
happen at the same time depending on what part of the code it was in,
it'll assume no controller is connected.
This commit is contained in:
Connor McLaughlin
2019-12-05 23:03:54 +10:00
parent 9fa8eb239e
commit 4798f35e40
2 changed files with 47 additions and 23 deletions
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7
src/core/pad.h
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@ -39,7 +39,8 @@ private:
enum class State : u32
{
Idle,
Transmitting
Transmitting,
WaitingForACK
};
enum class ActiveDevice : u8
@ -88,15 +89,17 @@ private:
BitField<u16, u8, 8, 1> clk_polarity;
};
bool IsTransmitting() const { return m_state == State::Transmitting; }
bool IsTransmitting() const { return m_state != State::Idle; }
bool CanTransfer() const { return m_transmit_buffer_full && m_JOY_CTRL.SELECT && m_JOY_CTRL.TXEN; }
TickCount GetTransferTicks() const { return static_cast<TickCount>(ZeroExtend32(m_JOY_BAUD) * 8); }
TickCount GetACKTicks() const { return 32; }
void SoftReset();
void UpdateJoyStat();
void BeginTransfer();
void DoTransfer();
void DoACK();
void EndTransfer();
void ResetDeviceTransferState();