rajamesandClaude Opus 5.5
dc7e37ba5c
Ruled 2026-10-04: guard all errors. The errors that set NODE-ERROR and let the line run on now stop it at once, with a message. - A store of a non-zero code to NODE-ERROR is a trap, a sixth kind of fault: nothing after it executes, the return stack is emptied, and the data stack is left as the word left it. Not attached, NODE-ERROR is plain memory, as the tests below the prompt use it. - The capsule's words store a code where they stored -1, and the prompt's (RAISED) prints its message: Negative count, Not a number, Number too long, Not a character, Dictionary full, Name missing, Control structure mismatch, Control structures too deep. - ' and COMPILE and [COMPILE] of a word that is not there say UNKNOWN WORD: 'xxx', as the interpreter does. - tests: the trap in test_exec.c; every message from the prompt, with the rest of the line not run and the stack kept, in test_host_quit.c. 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 three console
registers (CONSOLE-TX, which captures output, and CONSOLE-RX and CONSOLE-STATUS, which hand out
input a test feeds) standing in for the console node until the mesh exists. The tests load definitions
onto a node either opcode by opcode (v4/include/v4/asm.h) or as text in the notation DECOMPOSITION.md
uses (v4/include/v4/text.h). 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.