Robert Allan JamesandClaude Opus 5.5
9bf2e8ec95
physics_freeze_words.c, dictionary_heat_diagnostic_words.c, physics_diagnostic_words.c, physics_benchmark_words.c treated dsp as a count (data_stack[dsp++] push, data_stack[--dsp] pop) while the VM's dsp is the top index. On an empty stack a push wrote data_stack[-1], 8 bytes before the VM struct -- POST's DECAY-RATE@ test did it every boot (on aarch64 it hit parity.c's counter, elsewhere the POST block RAM tail). All 28 sites now use vm_pop/vm_push; four one-item guards fixed (dsp<0). Evidence on amd64/aarch64/riscv64: bytes before the VM struct unchanged across POST; DECAY-RATE@ leaves 1 item; LOOKUP-STRATEGY! now works; G interleave, precedence, console under load, relay 3, dict_hash unchanged. Co-Authored-By: Claude Opus 5.5 <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 |
workload-0.4th … workload-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