Point of Entry [SEP] performer
Point of Entry
Point of Entry is the seventh studio album from the British heavy metal band Judas Priest. It was released on 26 February 1981.
In 1980 Judas Priest garnered some airplay with "Breaking the Law" and "Living After Midnight" from their album "British Steel". As a result, the band pursued a more radio friendly direction on "Point of Entry". 
Following the conclusion of the British Steel World Tour, the band began work on their next project. By this time,
Before a subroutine returns, it jumps to the location immediately preceding its entry point so that after the SEP "return" instruction returns control to the caller, the register will be pointing to the right value for next usage. (the processor always increments the PC after reference and usage (retrieving the next instruction to execute), so this technique works as noted)
An interesting variation of this scheme is to have two or more subroutines in a ring so that they are called in round robin order. On early hobbyist