Analog Devices ADSP-BF53x Blackfin, Reference

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ADSP-BF53x/BF56x Blackfin Processor Programming Reference 16-17
External Event Management
RAISE (Force Interrupt / Reset)
General Form
RAISE
Syntax
RAISE uimm4 ; /* (a) */
Syntax Terminology
uimm4
: 4-bit unsigned field, with the range of 0 through 15
Instruction Length
In the syntax, comment (a) identifies 16-bit instruction length.
Functional Description
The Force Interrupt / Reset instruction forces a specified interrupt or reset
to occur. Typically, it is a software method of invoking a hardware event
for debug purposes.
When the
RAISE
instruction is issued, the processor sets a bit in the
ILAT
register corresponding to the interrupt vector specified by the
uimm4
con-
stant in the instruction. The interrupt executes when its priority is high
enough to be recognized by the processor. The
RAISE
instruction causes
these events to occur given the
uimm4
arguments shown in Table 16-1 .
Table 16-1. uimm4 Arguments and Events
uimm4 Event
0 <reserved>
1 RST
2 NMI