Disable Interrupts - Analog Devices ADSP-BF53x Blackfin Reference

Disable Interrupts

General Form
CLI
Syntax
CLI Dreg ;
Syntax Terminology
:
Dreg R7–0
Instruction Length
In the syntax, comment (a) identifies 16-bit instruction length.
Functional Description
The Disable Interrupts instruction globally disables general interrupts by
setting to all zeros. In addition, the instruction copies the previous
IMASK
contents of
IMASK
the interrupt system.
The Disable Interrupts instruction does not mask NMI, reset, exceptions
and emulation.
Flags Affected
None
Required Mode
The Disable Interrupts instruction executes only in Supervisor mode. If
execution is attempted in User mode, the instruction produces an Illegal
Use of Protected Resource exception.
ADSP-BF53x/BF56x Blackfin Processor Programming Reference
/* previous state of IMASK moved to Dreg (a) */
into a user-specified register in order to save the state of
External Event Management
16-13