INSTRUCTION DESCRIPTIONS
A - 176 INSTRUCTION SET DETAILS
MOTOROLA
Instruction Format:
( . . . . . ) X:ea,D
( . . . . . ) S,X:ea
( . . . . . ) #xxxxxx,D
Opcode:
Instruction Fields:
ea=6-bit Effective Address=MMMRRR
Effective
Register W Addressing Mode M M M R R R
Read S 0 (Rn)-Nn 0 0 0 r r r
Write D 1 (Rn)+Nn 0 0 1 r r r
(Rn)- 0 1 0 r r r
(Rn)+ 0 1 1 r r r
(Rn) 1 0 0 r r r
(Rn+Nn) 1 0 1 r r r
-(Rn) 1 1 1 r r r
Absolute address 1 1 0 0 0 0
Immediate data 1 1 0 1 0 0
23 16 15 8 7 0
OPTIONAL EFFECTIVE ADDRESS EXTENSION
0 1 d d 0 d d d W 1 M M M R R R INSTRUCTION OPCODE
X: X Memory Data Move X: