Language Reference

FlipJump is a one-instruction esoteric language. The whole machine has exactly one operation: a;b flips the bit at address a, then jumps to address b. Everything else — variables, conditionals, arithmetic, I/O — is built out of that single instruction via self-modifying code.

The reference below covers the bare language and its assembly-time machinery. For the standard library that builds practical abstractions on top of it, see Standard Library.

• The FlipJump Instruction
• Lexical Structure
• Expressions
• Macros
• Namespaces
• Directives
• Types and built-in names
• Input / Output
• Complexity notation

Quick recap of the layers

• Core instruction — one operation: a;b. See The FlipJump Instruction.

• Assembly syntax — comments, identifiers, numbers, expressions. See Lexical Structure and Expressions.

• Reusable code — def, ns, rep. See Macros and Namespaces.

• Memory layout — pad, reserve, segment, wflip. See Directives.

• Built-in names — w, dw, dbit, bit. See Types and built-in names.

• I/O — the special IO opcode addresses. See Input / Output.

• Complexity notation — what the @ symbol means in the STL’s annotations. See Complexity notation.