MC68EC000EI16 Freescale Semiconductor, MC68EC000EI16 Datasheet - Page 267

• Manufacturer Part Number: MC68EC000EI16
• Description: IC MPU 32BIT 16MHZ 68-PLCC
• Manufacturer: Freescale Semiconductor

Specifications of MC68EC000EI16

• Processor Type: M680x0 32-Bit
• Speed: 16MHz
• Voltage: 3.3V, 5V
• Mounting Type: Surface Mount
• Package / Case: 68-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

ROXL, ROXR
Operation:
Assembler
Syntax:
Attributes:
Description: Rotates the bits of the operand in the direction specified (L or R). The extend
MOTOROLA
bit is included in the rotation. The rotate count for the rotation of a register is specified
in either of two ways:
The size of the operation for register destinations is specified as byte, word, or long.
The contents of memory, < ea > , can be rotated one bit only, and operand size is
restricted to a word. The ROXL instruction rotates the bits of the operand to the left; the
rotate count determines the number of bit positions rotated. Bits rotated out of the high-
order bit go to the carry bit and the extend bit; the previous value of the extend bit
rotates into the low-order bit.
The ROXR instruction rotates the bits of the operand to the right; the rotate count deter-
mines the number of bit positions rotated. Bits rotated out of the low-order bit go to the
carry bit and the extend bit; the previous value of the extend bit rotates into the high-
order bit.
ROXR:
ROXL:
1. Immediate—The rotate count (1 – 8) is specified in the instruction.
2. Register—The rotate count is the value in the data register specified in the in-
struction, modulo 64.
C
M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
Destination Rotated With X By Count
ROXd Dx,Dy
ROXd # < data > ,Dy
ROXd < ea >
where d is direction, L or R
Size = (Byte, Word, Long)
X
Rotate with Extend
(M68000 Family)
OPERAND
.
.
OPERAND
Destination
ROXL, ROXR
X
Integer Instructions
C
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