U UNIVAC 1218 - Bitsavers

54 INDIRECT JUMP AND REMOVE INTERRUPT LOCKOUT (IJPEI)
50 57
Execution time: 8 microseconds
(Y) -+ P and RIL
y = up Address = (Y)14-0
Remove interrupt lockout (enable interrupts). Then jump
to the address which is the low order 15 bits of (y).
An application of this instruction is the termination of
a subroutine activated by an interrupt.
SKIP ON NO RESUME (SKPNR)
Execution time: 6 microseconds skip; 4.67 no skip
If the resume designator on channel k is not set (indicating
unsuccessful transfer of a word to an output device),
skip the next sequential instruction; otherwise, take the
next instruction.
I-B-46