Texas Instruments TMS320C2XX - Manual (Page 243)

LST Load Status Register
7-90
Example 4 LST #1,00h ;(DP = 6)
;Note that the ARB is loaded with
;the new ARP value.
Before Instruction After Instruction
Data Memory Data Memory
300h E1BCh 300h E1BCh
ST0 0406h ST0 E406h
ST1 09ECh ST1 E1FCh