Definition:Unlimited Register Machine/Instruction Pointer
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Definition
The line number of the instruction which is currently about to be executed is known as the instruction pointer.
It can be imagined as a special-purpose register in the URM whose purpose is to hold that line number.
Also see
- Results about unlimited register machines can be found here.
Sources
- 1963: John C. Shepherdson and H.E. Sturgis: Computability of Recursive Functions (J. ACM Vol. 10, no. 2: pp. 217 – 255)