This instruction does the inverse process of LINK instruction. Address register specified is moved in SP. Contents of SP is moved into address register.
----------------------------------------------------------------- |15 |14 |13 |12 |11 |10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |---|---|---|---|---|---|---|---|---|---|---|---|---|-----------| | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | REGISTER | ----------------------------------------------------------------- "REGISTER" indicates the number of address register, used as area pointer.