Robert Allan JamesandClaude Opus 5.5
2aa338483a
Replaces the global g_vm_interpret_depth test at both execute_colon_word() checkpoints (kernel-Hermes drain, switch-signal take) with sk_vm_owns_outermost_frame(vm): the VM physically owns the stack (sk_vm_switch_current_vm() == vm), is at its own outermost vm_interpret() frame (new per-VM VM.interpret_depth), and is not compiling. Once VMs interleave on their own native stacks, a global depth count across all VMs no longer means "this VM owns this stack"; this is the invariant it was approximating. The global and the old function stay until Stage I. Acceptance, all three ISAs, foreground with the framebuffer visible, coupled disk images reset before each: zero UNKNOWN WORD, zero self-test failures, dict_hash identical across ISAs and unchanged from the pre-Stage-A boot, and the live WIREBIND mint -> attach -> USE -> 1 2 + . -> 3 relay with stadium_conserved(self)=true. Logs: 20260923-140120 (amd64), -140654 (aarch64), -141303 (riscv64). FABRIC-3.8.md also records Captain Bob's ruling that preemption comes from the compudynamics, not the timer: principle 5 is corrected and the design question is opened as SS3.11, to be ruled before Stage C. 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