Texas Instruments TMS320C2XX - Manual (Page 306)

Store Auxiliary Register SAR
7-153 Assembly Language Instructions
Cycles for a Repeat (RPT) Execution of an SAR Instruction
Program
Operand ROM DARAM SARAM External
DARAM n n n n+p
SARAM n n n, n+2 † n+p
External 2n+nd 2n+nd 2n+nd 2n+2+nd+p
† If the operand and the code are in the same SARAM block
Example 1 SAR AR0,DAT30 ;(DP = 6: addresses 0300h–037Fh)
Before Instruction After Instruction
AR0 37h AR0 37h
Data Memory Data Memory
31Eh 18h 31Eh 37h
Example 2 SAR AR0,*+
Before Instruction After Instruction
ARP 0 ARP 0
AR0 401h AR0 402h
Data Memory Data Memory
401h 0h 401h 401h