Ampro Corporation 486E manual

Product Reference

To use the NMI I/O Channel Check in a custom Watchdog Timer handler routine, the standard NMI handler would have to be replaced with your custom code. If a customer supplied NMI interrupt service routine is installed, it can test to see if the I/O Channel Check NMI occurred by reading I/O port 61h, bit 6. Bit 6 is true (1) if the NMI occurred.

Note

Following the occurrence of an I/O Channel Check NMI, the function must be disabled and then re-enabled before the next one can occur.

The Watchdog timer is not compatible with Windows or other operating systems.

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