RTI

/R-T-I/

interj. The mnemonic for the 'return from interrupt' instruction on many computers including the 6502 and 6800. The variant 'RETI' is found among former Z80 hackers (almost nobody programs these things in assembler anymore). Equivalent to "Now, where was I?" or used to end a conversational digression.

See pop; see also POPJ.