rajamesandClaude Opus 5.5
ab3b708540
Q.* is floor(a*b / 2^16), signed (D-8), cut to two cells. Cells 0..2 of the product come from the unsigned cell products a0*b0, a0*b1, a1*b0 and the low cell of a1*b1; reading a1 and b1 as signed takes (a1<0 ? b0 : 0) + (b1<0 ? a0 : 0) off cell 2. The result is cells 0..2 shifted right 16 with Q.TO-INT twice. Clobbers A. Checked at 32- and 64-bit cells, optimised and ASan+UBSan, on every pair of 17 edge Q values plus 20000 pseudo-random pairs: - against an independent reference (16-bit limbs, magnitudes multiplied schoolbook, negated, shifted), and - against v3's q48_mul for non-negative operands. The first draft applied only a1's sign correction; the reference caught the missing b1 term (9860 failures at 32-bit cells). v3 bug found, not fixed: q48_mul's portable branch (used where there is no __int128) returns (result_hi << 16) | (result_lo >> 16); the high part must move up 48, so it is wrong whenever the product passes bit 64, e.g. 0.5 * Q max gives 0000ffffffffffff instead of 3fffffffffffffff. The parity reference here is that branch with the shift corrected, which matches v3's __int128 branch. Stack use is tight: Q.* leaves its caller 2 data cells and 1 return entry, because UM* parks three values on the return stack. Recorded in 5.26; to be improved next. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
StarForth / LithosAnanke Documentation
This is the lithosananke branch: the bare-metal StarKernel side of the project
(contrast master, which is the hosted-VM-only side). Documentation follows the
two-tier model described in docs/CLAUDE.md: formal/ is the polished,
citable LaTeX tier; working/ is living design notes and drafts that feed it.
Everything else in this directory is branch- or subsystem-specific material that
doesn't fit either tier.
Layout
- formal/ — Three-volume LaTeX documentation set (research volumes,
practitioner books, standalone reports) plus the
scraps/fragment library it's assembled from. Audience: patent counsel, SSRN reviewers, licensees, hobbyists with hardware in hand. Seeformal/CLAUDE.mdfor authoring conventions. - working/ — Living documents: architecture design notes, DoE
experiment logs, hardware/platform notes, draft specs, academic-paper source
material, and an archive of superseded docs. Source material for
formal/. - 03-architecture/ — Tripod VM architecture constraints (Hera/Hermes/Artemis) and the word-level ACL system design.
- lithosananke/ — LithosAnanke kernel branch documentation: milestone roadmap, system architecture, HAL reference, kernel command-line argument design, and the amd64 APIC-timer ISR postmortem.
- birthing/ — VM birthing plan and status for the Hera-spawns- Hermes/Artemis constellation, plus three-architecture QEMU acceptance logs.
- patent/ — Provisional patent application source. Legal hold — ask Bob before touching anything in this directory.
- api/ — Generated Doxygen tag file and warnings log (gitignored; not part of the tracked doc tree).
- pptx/ — Elevator-pitch and deep-dive slide decks for different audiences (technical, non-technical, academic, PhD-level).
Current Active Work
- LithosAnanke M7/M7.1 — VM parity validation and init capsule architecture.
See
lithosananke/README.mdandlithosananke/M7.1.md. - Word-level ACL system — Phase 6 complete on
master; Phase 7 (LithosAnanke parity) is the next step. See03-architecture/word-acl/README.md. - Tripod VMs — Hera (governor), Hermes (messenger), Artemis (memory/block
storage). See
03-architecture/tripod/README.mdandbirthing/.
Contributing
- Place new material in
working/first; promote toformal/only when it's ready to be cited (seeformal/CLAUDE.mdfor promotion criteria). - Never touch
patent/,formal/patent/,formal/scraps/legal/, orworking/legal/without Bob's explicit instruction. - Add a
README.mdto any new category-level subdirectory, following the format used throughout this tree: orientation paragraph + bullet list of real files with one-line descriptions.