Robert Allan JamesandClaude Sonnet 5
e40134da0d
First entry in the "cookbook" track: a demo capsule plus HOWTO, per the sequencing laid out after the POST-coverage sweep. Built entirely in FORTH on top of existing primitives -- fabric.4th's LINE (raster Bresenham) and Q.SIN/Q.COS (Q48.16 trig), plus PLOT/FB-WIDTH/FB-HEIGHT -- no new C words. FORWARD/BACK/LEFT/RIGHT/PENUP/PENDOWN/HOME/SETXY/SETHEADING/SETCOLOR give the classic turtle model; POLYGON and STAR compose FORWARD+turn into simple demo shapes; TURTLE-DEMO is a one-call visual smoke test. Not wired into init.4th -- REPL-invoked only, matching the original idea's own scope. Verified: mkcapsule --lint clean, hosted-build logic trace shows zero VM errors and correct stack balance through the whole vocabulary, zero build warnings and capsule loads cleanly on all three kernel architectures. Visual pixel-level confirmation not yet done (needs an interactive gtk-display session or driving past the ~25-30 min DoE-before-REPL wall), documented as an open item in the HOWTO. HOWTO: docs/working/architecture/TURTLE-GRAPHICS-HOWTO-20260819.md Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
capsules/
FORTH personality files loaded by the VM at boot. A capsule is an immutable, content-addressed payload; its XXHash64 hash is its identity. Any mutation changes the hash and the birth protocol rejects the image.
Key files
| File | Type | Purpose |
|---|---|---|
init.4th |
(m) MAMA_INIT |
Default Mama VM personality — loaded at LBN 2048 |
ACL.4th |
user | Word-level ACL system; self-activating at boot |
zuse.4th |
user | Bootstrap superuser; loaded by ACL.4th |
doe.4th |
user | DoE workload words (EXEC-DOE) — opt-in |
init-0.4th … init-9.4th |
(p) |
Numbered personality variants |
init-l8-*.4th |
(p) |
L8 Jacquard mode variants (stable/volatile/diverse/temporal/transition/omni) |
hermes/init.4th |
(p) |
Hermes baby VM personality |
artemis/init.4th |
(p) |
Artemis baby VM personality |
Block namespace
Block ranges are shared across all loaded capsules — collisions cause silent word-definition overwrites.
| Range | Owner |
|---|---|
| 2048–2099 | init.4th |
| 2100–2199 | doe.4th |
| 3000–3999 | workload capsules |
| 4000+ | user-defined (ACL.4th, zuse.4th, …) |
Each block is limited to 1024 bytes. Verify with wc -c before committing.
See also
experiments/bare_metal/README.md— DoE protocols and block namespace rulesdocs/03-architecture/word-acl/DESIGN.md— ACL system designtools/mkcapsule.c— assembles capsules intocapsule_generated.c- Project root