Motorola CPU32 Reference Manual page 193

II
ROXL, ROXR
Rotate with Extend ROXL, ROXR
Instruction Format (Memory Rotate):
15 14 13 12 11 10 9 8
1
1
1
0 0 1 0 dr
Instruction Fields (Memory Rotate):
dr field - Specifies the direction of the rotate:
o -
Rotate right
1 - Rotate left
7 6 5 4 3
2
o
EFFECTIVE ADDRESS
1 1
I
MODE REGISTER
Effective Address field - Specifies the operand to be rotated. Only memory alterable addressing
modes are allowed as shown:
Addressing Mode
MOTOROLA
4-140
Dn
An
(An)
(An)
+
-(An)
(d16. An)
(de. An. Xn)
(bd. An. Xn)
Mode
-
-
010
011
100
101
110
110
Register Addressing Mode Mode Register
-
(xxx).W 111 000
-
(xxx).L
111 001
Reg. number: An
#(data)
-
-
Reg. number: An
Reg. number: An
Reg. number: An
(d16. PC)
-
-
Reg. number: An
(de. PC. Xn)
-
-
Reg. number: An
(bd. PC. Xn)
- -
INSTRUCTION SET
CPU32 REFERENCE MANUAL