MIPS R4000 Microprocessor User's Manual 401
R4000 Processor Interrupts
15
The R4000 processor supports the following interrupts: six hardware
interrupts, one internal “timer interrupt,” two software interrupts, and
one nonmaskable interrupt. The processor takes an exception on any
interrupt.
This chapter describes the six hardware and single nonmaskable
interrupts. A description of the software and the timer interrupts can be
found in Chapter 5. CPU exception processing is also described in
Chapter 5.
Floating-point exception processing is described in Chapter 6.
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