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diff --git a/isa/README.md b/isa/README.md new file mode 100644 index 0000000..bf855eb --- /dev/null +++ b/isa/README.md @@ -0,0 +1,12 @@ +# ISA Definition + +Formal, machine-readable specification of the instruction set. + +## Structure + +- `encoding/` — Instruction encoding bitfield definitions (JSON/YAML tables) +- `opcodes/` — Opcode mnemonics, values, operand types +- `extensions/` — Optional ISA extensions (e.g. float, vector, crypto) +- `privileged/` — Privileged architecture: CSRs, traps, memory management + +This directory is the **source of truth** consumed by the generators in `gen/`. |