Texas Instruments TMS320C2XX User Manual
Page 297
ROL
Rotate Accumulator Left
7-144
Syntax
ROL
Operands
None
Opcode
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
0
1
1
0
0
0
0
0
1
1
1
1
1
0
1
Execution
Increment PC, then ...
C
→
ACC(0)
(ACC(31))
→
C
(ACC(30:0))
→
ACC(31:1)
Status Bits
Affects
C
This instruction is not affected by SXM.
Description
The ROL instruction rotates the accumulator left one bit. The value of the carry
bit is shifted into the LSB, then the MSB is shifted into the carry bit.
Words
1
Cycles for a Single ROL Instruction
ROM
DARAM
SARAM
External
1
1
1
1+p
Cycles for a Repeat (RPT) Execution of an ROL Instruction
ROM
DARAM
SARAM
External
n
n
n
n+p
Example
ROL
Before Instruction
After Instruction
ACC
0
B0001234h
ACC
1
60002468h
C
C
Cycles