AAEON AEC-6643 - Manual (Page 59)

E m b e d d e d C o n t r o l l e r A E C - 6 6 4 3
Appendix A Programming the Watchdog Timer A-6
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VOID
SIOEnterMBPnPMode() {
Switch(SIOIndex){
Case 0x2E:
IOWriteByte(SIOIndex, 0x87);
IOWriteByte(SIOIndex, 0x01);
IOWriteByte(SIOIndex, 0x55);
IOWriteByte(SIOIndex, 0x55);
Break;
Case 0x4E:
IOWriteByte(SIOIndex, 0x87);
IOWriteByte(SIOIndex, 0x01);
IOWriteByte(SIOIndex, 0x55);
IOWriteByte(SIOIndex, 0xAA);
Break;
}
}
VOID SIOExitMBPnPMode() {
IOWriteByte(SIOIndex, 0x02);
IOWriteByte(SIOData, 0x02);
}
VOID SIOSelectLDN(byte LDN) {
IOWriteByte(SIOIndex, 0x07); // SIO LDN Register Offset = 0x07
IOWriteByte(SIOData, LDN);
}
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