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44
NDiS S538 User Manual
Appendix A: NCT6106 Watchdog Programming Guide
a
PPendIx
a: nCt6106 W
atChdog
P
rogrammIng
g
uIde
NDiS S538 features a watchdog timer that resets the CPU or generates an
interrupt if the processor stops operating for any reason. This feature ensures
system reliability in industrial standalone or unmanned environments.
#define SUPERIO_PORT 0x2E
#define WDT_SET
0xF0
#define WDT_VALUE
0xF1
void main(void)
{
# Enter SuperIO Configuration
outportb(SUPERIO_PORT, 0x87);
outportb(SUPERIO_PORT, 0x87);
# Set LDN
outportb(SUPERIO_PORT, 0x07);
outportb(SUPER1, 0x08);
# Set WDT setting
outportb(SUPERIO_PORT, WDT_SET);
outportb(SUPER1, 0x00);
# Use the second
# Use the minute, change value to 0x08
# Set WDT sec/min
outportb(SUPERIO_PORT, WDT_VALUE);
outportb(SUPER1, 0x05);
# Set 5 seconds
}
