6.14 Interrupts

Nonmaskable Interrupt

A nonmaskable interrupt is accessible to an external agent as the SysNMI* signal. To post a nonmaskable interrupt, an external agent asserts SysNMI* for at least one SysClk cycle.

The processor recognizes the nonmaskable interrupt on the first SysClk cycle that SysNMI* is asserted. After the nonmaskable interrupt is serviced, an external agent may post another nonmaskable interrupt by first negating SysNMI* for at least one SysClk cycle, and reasserting SysNMI* for at least one SysClk cycle.

Copyright 1995, MIPS Technologies, Inc. -- 29 JAN 96

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