Robert Allan JamesandClaude Sonnet 5
3396e9a7b4
vt100.c: font_8x16/bitmap-mode boot output previously had no scrollback at all -- g_shadow/g_ring were only allocated in vt100_enable_ttf(), so POST/self-test/heartbeat text was gone the instant it scrolled off, recoverable only from the serial log. Gives boot mode its own ring/ shadow pair (bitmap cell geometry, 4096-line capacity), frozen as a snapshot the moment vt100_enable_ttf() switches to the TTF-geometry pair, per the two-independent-rings design scoped with Captain Bob. scrollback_line_at()/scrollback_redraw()/vt100_scroll_back() now walk all four segments (boot ring, boot shadow, TTF ring, TTF shadow) as one continuous history, so PgUp from the REPL reaches back through POST. Three-arch QEMU boot + logs clean (amd64/aarch64/riscv64, no faults, no dictionary/parity regressions). Visual verification that PgUp actually recalls POST text still needs an interactive GTK screendump -- noted as open in FABRIC.md, same pattern as 4.4ab's screendump. Also includes BLOCK_MAP.md/artemis.img regenerated by these builds, and the acceptance-boot logs (plus stray logs from an earlier QEMU-instance collision during testing -- kept per repo convention, logs are audit artifacts, not deleted). 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