Enable Interrupts - Analog Devices ADSP-BF53x Blackfin Reference

Enable Interrupts

General Form
STI
Syntax
STI Dreg ;
Syntax Terminology
:
Dreg R7–0
Instruction Length
In the syntax, comment (a) identifies 16-bit instruction length.
Functional Description
The Enable Interrupts instruction globally enables interrupts by restoring
the previous state of the interrupt system back into
Flags Affected
None
Required Mode
The Enable Interrupts instruction executes only in Supervisor mode. If
execution is attempted in User mode, the instruction produces an Illegal
Use of Protected Resource exception.
Parallel Issue
The Enable Interrupts instruction cannot be issued in parallel with other
instructions.
ADSP-BF53x/BF56x Blackfin Processor Programming Reference
/* previous state of IMASK restored from Dreg (a) */
External Event Management
IMASK
.
16-15