Progsbase Instruction Set - Expression Instructions

  • Computational instructions always give the same output for the same input, and they have no other effects.
  • Infrastructural instructions give different (or no) output for the same input (if any), and they cause outside effects.
    • Each infrastructural instruction comes in four asynchronous variants: snd, rcv, srv snd and srv rcv.
  • Read the full story behind the instruction set in Foundations of Computer Science.


all computational infrastructural arithmetic relational boolean control-flow block expression structural data conversion processing-unit disk clock screen processing-unit-controller keyboard audio

Mnemonic Name Arguments Type Categories
par Parenthesis x = (a) Computational expression
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