Logical Instructions - Motorola DSP56000 Manual

ABS Absolute Value
ADC Add Long with Carry
ADD Addition
ADDL Shift Left and Add
ADDR Shift Right and Add
ASL Arithmetic Shift Left
ASR Arithmetic Shift Right
CLR Clear an Operand
CMP Compare
CMPM Compare Magnitude
DEC* Decrement by One
*
DIV Divide Iteration
INC* Increment by One
MAC Signed Multiply-Accumulate
MACR Signed Multiply-Accumulate and Round**
MPY Signed Multiply**
MPYR Signed Multiply and Round**
NEG Negate Accumulator
*
NORM Normalize
RND Round
SBC Subtract Long with Carry
SUB Subtract
SUBL Shift Left and Subtract
SUBR Shift Right and Subtract
*
Tcc Transfer Conditionally
TFR Transfer Data ALU Register
TST Test an Operand

6.4.2 Logical Instructions

The logical instructions execute in one instruction cycle and perform all of the logical oper-
ations within the data ALU (except ANDI and ORI). They may affect all of the CCR bits
and, like the arithmetic instructions, are register based.
Logical instructions are the only instructions that allow apparent duplicate destinations,
such as:
AND X0,A
A logical instruction uses only the MSP portion of the A and B registers (A1 and B1).
*These instructions do not allow parallel data moves.
**Certain applications of these instructions do not allow parallel data moves.
MOTOROLA
INSTRUCTION GROUPS
**
X:(R0):A0
INSTRUCTION SET INTRODUCTION 6 - 23