User Manual

PC/104 Module PFM-CVS Rev. B
Appendix D Electrical Specificat ions for I/O Ports D-10
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Boolean
SIOBitRead(byteLDN,byteRegister,byteBitNum){
 ByteTmpValue;

 SIOEnterMBPnPMode();
SIOSelectLDN(LDN);
IOWriteByte(SIOIndex,Register);
TmpValue=IOReadByte(SIOData);
 TmpValue&=(1<<BitNum);
 SIOExitMBPnPMode();
 If(TmpValue==0)
Return0;
 Return1;
}
VOID
ConfigToOutputMode(byteLDN,byteRegister ,byteBitNum){
 ByteTmpValue,O utputEnableReg;

 OutputEnableReg=Register‐1;
 SIOEnterMBPnPMode();
SIOSelectLDN(LDN);
IOWriteByte(SIOIndex,OutputEnableReg);
TmpValue=IOReadByte(SIOData);
TmpValue|=(1<<BitNum);
IOWriteByte(SIOData,OutputEnableReg);
SIOExitMBPnPMode();
}
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