URISC
URISC is a machine in which there is only one instruction: reverse-subtract and skip if borrow. This is similar to the 'subtract and branch unless positive' operation from OISC.Quoted from the author's initial email/posting:
The accumulator is subtracted from the memory location and the next instruction is skipped if there was a borrow. The result is stored in both the accumulator and the memory location. The PC is memory location 0.
The original work on this package was done by Mike Albaugh of Atari Games.
