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Move, Caution – Motorola DSP96002 User Manual

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DSP96002 USER’S MANUAL

MOTOROLA

X:

X Memory Move

X:

Operation:

X:

D

X:

D

S

X:

S

X:

#xxxx

D

Assembler Syntax:

X: ea, D

X:(Rn+displacement),D

S,X: ea

S,X:(Rn+displacement)

#Data,D

Description:

Move one word operand to/from X memory. One effective address is specified. All memory addressing

modes, including absolute address and immediate data, may be used. Long displacement addressing

may also be used. A memory to register or register to memory direction 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.

Move

Move