R a i l w a y
E m b e d d e d B o x P C
B O X E R - 6 3 5 7 V S
************************************************************************************
VOID
SIOEnterMBPnPMode()
{
IOWriteByte(SIOIndex, 0x87);
IOWriteByte(SIOIndex, 0x87);
}
VOID
SIOExitMBPnPMode()
{
IOWriteByte(SIOIndex, 0xAA);
}
VOID
SIOSelectLDN(byte LDN)
{
IOWriteByte(SIOIndex, 0x07);
// SIO LDN Register Offset = 0x07
IOWriteByte(SIOData,
LDN
);
}
VOID
SIOBitSet(byte LDN, byte Register, byte BitNum, byte Value)
{
Byte TmpValue;
SIOEnterMBPnPMode();
SIOSelectLDN(byte
LDN
);
IOWriteByte(SIOIndex, Register);
TmpValue = IOReadByte(SIOData);
TmpValue &= ~(1 << BitNum);
TmpValue |= (Value << BitNum);
IOWriteByte(SIOData, TmpValue);
SIOExitMBPnPMode();
}
VOID
SIOByteSet(byte LDN, byte Register, byte Value)
{
SIOEnterMBPnPMode();
SIOSelectLDN(LDN);
IOWriteByte(SIOIndex, Register);
IOWriteByte(SIOData,
Value
);
SIOExitMBPnPMode();
}
************************************************************************************
Appendix D Electrical Specifications for I/O Ports
D-8
Summary of Contents for BOXER-6357VS
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