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Move – Motorola DSP96002 User Manual

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MOTOROLA

DSP96002 USER’S MANUAL

A - 237

L:

Long Memory Move

L:

0010

01WD

DDDD

MMMR

uu

uuuu

uuuu

uuuu

31

14 13

0

OPTIONAL EFFECTIVE ADDRESS EXTENSION

Instruction Format

- Opcode-operands:

L:(Rn+displacement),D
S,L:(Rn+displacement)

0000

111D

DDDD

0W0R

uu

uuuu

uuuu

uuuu

31

14 13

0

LONG DISPLACEMENT

Operation:

X:

D(MS)

Y:

D(LS)

X:

D(MS)

Y:

D(LS)

S(MS)

X:

S(LS)

Y:

S(MS)

X:

S(LS)

Y:

Assembler Syntax:

L: ea, D

L:(Rn+displacement),D

S,L: ea

S,L:(Rn+displacement)

Description:

This instruction allows long word operand data moves to/from one effective address in L (X:Y) memory.

The long word operand is a long integer for integer moves and a double precision IEEE data type for float-

ing-point moves. One effective address is specified. All memory alterable addressing modes may be

used. Long displacement addressing may also be used. A memory to register or register to memory di-

rection 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.

Instruction Format

- Opcode-operands:

L: ea, D

S,L: ea

Move

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