Sequencer Related Registers - Analog Devices ADSP-BF53x Blackfin Reference

Sequencer Related Registers

Table 4-1 lists the non-memory-mapped registers within the processor
that are related to the sequencer. Except for the
all sequencer-related registers are directly readable and writable by move
instructions, for example:
SYSCFG = R0 ;
P0 = RETI ;
Manually pushing or popping registers to or from the stack is done using
the explicit instructions:
[--SP] = Rn ; /* for push */
Rn = [SP++] ; /* for pop */
Similarly, all non-memory-mapped sequencer registers can be pushed and
popped to or from the system stack:
[--SP] = CYCLES ;
SYSCFG = [SP++] ;
However, load/store operations and immediate loads are not supported.
ADSP-BF53x/BF56x Blackfin Processor Programming Reference
Program Sequencer
and registers,
PC SEQSTAT
4-5