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Rregister to register parallel move r, Move, Caution – Motorola DSP96002 User Manual

Page 413

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MOTOROLA

DSP96002 USER’S MANUAL

A - 225

R

Register To Register Parallel Move

R

Operation:

Opcode Operation S1

D1

Opcode Operation S2

D2

Assembler Syntax:

Opcode-Operands S1,D1

Opcode-Operands S2,D2

Description:

Move the source register to the destination register. Single precision to single precision moves (S1,D1) or

double precision to double precision moves (S2,D2) may be specified.

If the opcode-operand portion of the instruction specifies as the destination a portion of the register Dn, the

same register portion may not be specified as a destination D in the data bus move operation. That is, du-

plicate destinations are not allowed in the same instruction. For example, both a Data ALU operation and

a data move operation cannot write into the same register in the same instruction.

If the opcode-operand portion of the instruction specifies as the source or destination a portion of the reg-

ister Dn, the same register portion may be specified as a source S in the data bus move operation. That is,

duplicate sources are allowed in the same instruction. For example, a data move operation can read the

same register which is being used as a source or destination by a Data ALU operation in the same instruc-

tion.

CAUTION

See restrictions in Section A.10.6 concerning Rn, Mn, and Nn registers as a
destination.

Single Precision Instruction Format - Opcode-operands: S1, D1

0000

10DD

DDDD

dddd

dd

uu

uuuu

uuuu

uuuu

31

14 13

0

0001

011D

DDDD

0ddd

dd

uu

uuuu

uuuu

uuuu

31

14 13

0

Double Precision Instruction Format - Opcode-operands: S2, D2

Move

Move