5.37. Unstack IC and Return from Subroutine

Addr
Mode  Mnemonic          Format/Opcode
                           8      4      4
                        ---------------------
S     URS   RA          |  7F  |  RA  |  0  |
                        ---------------------

Description. The contents of the memory location pointed to by register RA is loaded into the instruction counter, IC. RA is then incremented by one. Any one of the 16 general registers may be designated as the stack pointer. This instruction is the subroutine return for SJS, Stack and Jump to Subroutine.

Register Transfer Description.

(IC) <-- [(RA)];
(RA) <-- (RA) + 1;

Registers Affected. RA, IC