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EXI_DeviceAD16.cpp
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EXI_DeviceAD16.cpp
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// Copyright 2008 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include "Core/HW/EXI/EXI_DeviceAD16.h"
#include "Common/Assert.h"
#include "Common/ChunkFile.h"
#include "Common/CommonTypes.h"
namespace ExpansionInterface
{
CEXIAD16::CEXIAD16() = default;
void CEXIAD16::SetCS(int cs)
{
if (cs)
m_position = 0;
}
bool CEXIAD16::IsPresent() const
{
return true;
}
void CEXIAD16::TransferByte(u8& byte)
{
if (m_position == 0)
{
m_command = byte;
}
else
{
switch (m_command)
{
case init:
{
m_ad16_register.U32 = 0x04120000;
switch (m_position)
{
case 1:
DEBUG_ASSERT(byte == 0x00);
break; // just skip
case 2:
byte = m_ad16_register.U8[0];
break;
case 3:
byte = m_ad16_register.U8[1];
break;
case 4:
byte = m_ad16_register.U8[2];
break;
case 5:
byte = m_ad16_register.U8[3];
break;
}
}
break;
case write:
{
switch (m_position)
{
case 1:
m_ad16_register.U8[0] = byte;
break;
case 2:
m_ad16_register.U8[1] = byte;
break;
case 3:
m_ad16_register.U8[2] = byte;
break;
case 4:
m_ad16_register.U8[3] = byte;
break;
}
}
break;
case read:
{
switch (m_position)
{
case 1:
byte = m_ad16_register.U8[0];
break;
case 2:
byte = m_ad16_register.U8[1];
break;
case 3:
byte = m_ad16_register.U8[2];
break;
case 4:
byte = m_ad16_register.U8[3];
break;
}
}
break;
}
}
m_position++;
}
void CEXIAD16::DoState(PointerWrap& p)
{
p.Do(m_position);
p.Do(m_command);
p.Do(m_ad16_register);
}
} // namespace ExpansionInterface