Interrupts and Exceptions,
Continued
Table 1–3
(Continued) Interrupt Priority Levels
Priority Level
Interrupt Condition
SCB Offset
16
IRQ_H[2] asserted
Unused
Interval timer (IRQ_H[2] takes priority)
C0
15
IRQ_H[1] asserted
14
IRQ_H[0] asserted
Network interface
104
13:10
Unused
0F:01
Software interrupt requests
84-BC
** These conditions generate a hardware halt procedure with a halt code of 2 (external halt).
Exceptions
There are six categories of exceptions.
Arthimetic
Memory management
Operand
Instruction
Tracing
System failure
A list of exceptions, grouped by class, is shown in Table 1–4.
Continued on next page
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