M- M* M/MOD MOD */ */MOD, D0< D2* D2/ 2ROT, 2DROP and 2>R 2R@ 2R>, beside UM* and SM/REM in test_foundation.c. Executed on the golden model at both cell widths against C and results recorded from the v3 binary. M- widens n before negating it, so the most negative n is right. */MOD goes through a full double product. D2/ is one +* step. M- and M/MOD take the double in the standard order ( lo hi ), as M+ does; v3 took its low cell on top. The foundation test's node is now full: 958 of the 960 words below its variables. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
v4/
StarForth v4: the 32-instruction F18-derived core. The design lives in
docs/v4.0.0/JUSTIFICATION.md (why) and docs/v4.0.0/DECOMPOSITION.md
(every v3 word mapped to a v4 fate).
The first deliverable is the hosted C99 golden model (JUSTIFICATION.md §10,
step 1). It must pass POST and hold K≡1.0 with 32- and 64-bit cells on all
three host ISAs.
Acceptance (JUSTIFICATION.md §16): v4 must be equivalent to v3 at any point
in time, with the same vocabularies and behaviour, on the F18-derived engine;
and every ISA, hosted and bare metal, must still reach its ok prompt.
make -C v4 test passing is a development check, not acceptance.
What exists so far is the single node: registers, circular stacks, memory, all
32 opcodes, per-opcode and per-call-target heat, and a console capture
register (CONSOLE-TX) standing in for the console node until the mesh exists. make -C v4 test builds
and runs the tests at both cell widths; make -C v4 sanitize repeats them
under ASan and UBSan. There is no compiler capsule, no POST and no K
measurement yet.