Motorola DSP56800 Manual page 300

DEC(W)
Data ALU Operation
Operation
DEC(W)
Timing:
Refer to the preceding Instruction Fields table
Memory: Refer to the preceding Instruction Fields table
A-70
Decrement Word
Parallel Memory Read or Write
Registers Memory Access
A X:(Rn)+
B X:(Rn)+N
DSP56800 Family Manual
DEC(W)
Source or Destination
X0
Y1
Y0
A1
B1
A
B