The host node starts in its ROM (entry 12), and the boot feeds it the
system's source through the console: capsules/v4/sys/map-64.f18, the
fourteen .f18 blobs and end.f18, each found, hash-checked and
signature-checked as any capsule, then EOT. The ROM assembles the system
and starts it at (IDLE); the host reads the image record
(v4_image_from_node) for what only the assembled system knows. A ROM
error is reported with its blob, line and meaning, then PARITY:FAIL.
Deleted: v4/tools/mkimage.c, capsules/v4/nucleus-64.f18, v4/capsule/*.v4,
v4/tools/v4tof18.py. The .f18 files are the source now.
- text.c speaks the rest of the ROM's language (set, here, store, start;
v4_text_value, v4_text_start), so the oracle reads the same source:
test_host_rom_nucleus compares the ROM against text.c on the .f18 files,
word for word, image record included. Host tests load the .f18 files.
- mkmap image writes v4_map_image (the map's description of the system);
hosted and the kernel link the ROM and the map instead of v4_image_64.c.
- Hera (Captain Bob's ruling, option 1): births stream the system the ROM
assembled, as assembled code; hera.4th is unchanged.
test_host_unit's host builds the system with the ROM.
- New parity lines: PARITY:V4_F18 per blob, PARITY:V4_ROM words=2049
rom_hash=0xa6c792b5821010b7 instructions=60725216.
Acceptance: amd64, aarch64, riscv64 boot to ok> with PARITY:V4_POST
tests=538 pass=538 fail=0, POST: PASSED, and PARITY:V4_SYSTEM
word_count=317 dict_hash=0xe5a57f3eb72ff94a on all three -- the same hash
as the prebuilt nucleus gave. make -C v4 test test-32 hosted-check: all
pass. Logs: logs/20261015-141648, -141938, -142350.
Startup cost under QEMU TCG, the ROM's assembly (last V4_F18 line to
V4_ROM): amd64 26.7 s of 132 s to ok>; aarch64 41.0 s of 195 s; riscv64
20.5 s of 101 s. Hosted native: +0.85 s.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
word.f18: (NEXT-TOKEN) reads the console or a macro being expanded; labels,
branches by name (a label of the word, or a word, now or later), the
table of branches waiting, end of word, FOR/NEXT/UNEXT, macros, &NAME,
CONST+N, and (ONE), which dispatches a token. A forward branch to a name
not yet defined waits on a placeholder symbol, filled in by (DEFINE).
dir.f18: constant set here #, ", store, and start, which resolves, clears
the tables the ROM used and runs the word it names. main.f18: the ROM
itself, entry 12; on an error it stops at (ROM-FAILED) with the code and
line in its state, for the loader to report. sym.f18 generalized: any
counted string, placeholders, a hash of only a name's own cells.
test_host_rom_asm.c gives test_text.c's own texts (accepted and refused),
its four real definitions and the ROM's directives to text.c and to the
ROM: the same words, the same errors on the same lines, at both widths.
The ROM is 2036 words.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
(OP) (LIT) (BRANCH) (BRANCH>) (RESOLVE) (LABEL), entries 6-11: the code
generator of any language built on the machine (MACHINE.md 2.1). asm.c's
layout rules with text.c's branch placement; 400 random sequences agree
word for word with asm.c at both widths, memory-full and out-of-reach are
refused on both sides, and a ref with no branch is refused, not looped on.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
(FIND) ( -- rec | 0 ), (DEFINE) ( value kind -- ) and (OPCODE) ( -- op | -1 ),
entries 3-5. Names are refused as text.c's define refuses them, compared
case by case with text.c; a set variable may be set again. 256 hash heads,
records growing up and names growing down in dictionary space, used only
while the ROM assembles. text.c gains the data directives #, and ", (the
ROM's language; its mnemonic and reserved-word tables are data); the
nucleus image is byte-identical.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
(NUMBER) ( -- n flag ), entry 2: decimal with a leading -, or hex after $;
1 a number, 0 not one, -1 one that does not fit a cell. Every case is also
given to text.c, the oracle, at both widths.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The ROM's source is F18 code in capsules/v4/rom, assembled off the node by
v4/tools/mkrom.c with the memory map's constants from v4/tools/mkmap.c
(MACHINE.md 2). main.f18 is the entry table payloads call through (2.1);
in.f18 reads the console and splits it into tokens exactly as text.c does,
the token held packed as a counted string. The ROM's state is a reserved
area of the map (host_map.h ROM_*). text.c gains the constant directive,
so the off-node assembler and the ROM speak one language. The map also
names (NUMBER)'s state, for the next task.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
