Motorola DSP96002 - Manual (Page 421)

MOTOROLA DSP96002 USER’S MANUAL A - 233
Y: Y Memory Move Y:
Operation:
Opcode Operation Y:<ea>
→
D
Opcode Operation Y:<Rn+xxxx>
→
D
Opcode Operation S
→
Y:<ea>
Opcode Operation S
→
Y:<Rn+xxxx>
Opcode Operation #xxxx
→
D
Assembler Syntax:
Opcode-Operands Y: ea, D
Opcode-Operands Y:(Rn+displacement),D
Opcode-Operands S,Y: ea
Opcode-Operands S,Y:(Rn+displacement)
Opcode-Operands #Data,D
Description:
Move one word operand to/from Y 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.
Instruction Fields: <ea> Rn - R0-R7 (Memory addressing modes only)
Move Move