Python 3 backend · native JavaScript frontend
JIK Register Lab
Edit source, run the register VM, and keep immutable workspace revisions. Validated format-16 capsules remain private on the server.
format 16
37/37 executable opcodes
32-register window
16 generic-cache slots
portable private capsules
keyword-slot modules
# lookup: the prefix is not part of a symbol. #name probes native first, then global. @#name uses that rule in the function namespace. Module members use explicit keyword slots such as (module-ref math .pi).
Bare t/f are convenient Boolean fallbacks and may be shadowed by ordinary bindings; #t/#f are always explicit Boolean literals.
Ln 1, Col 1
Result
Run the program to see a result.
- Instructions / executed
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- Registers / spills
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- Server capsule
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- Generic dispatch
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- Top opcodes
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- Executable opcode ABI
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- Capsule digest
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web profile
All 37 format-16 opcodes now have executable, capsule-validated web semantics. Direct/native/register calls, multiple returns and assignment, objects, scopes, declarations, macros, moves, and spills are covered by tests.
The public sandbox adds named let, letrec, cond, and/or, when/unless, collection transforms, math/string helpers, bounded time functions, and immutable heap-reified multi-shot call/cc. Live continuation serialization, native machine code/FFI, host I/O, collectors, and the C optimizer remain trusted-runtime work.