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LithosAnanake/capsules/v4/sys/words.f18
T
rajamesandClaude Opus 5.5 a73580e949 feat(v4): the machine boots from its ROM; the prebuilt nucleus is gone 
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>
2026-10-15 14:26:02 -04:00

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\ words.f18 -- more of the FORTH vocabulary: the stack, comparison, double,
\ mixed, shift and string words that are short runs of opcodes or small loops.
\
\ Each is the definition DECOMPOSITION.md gives (sections 4, 5.1 - 5.7, 5.9)
\ and the mesh-node tests execute (test_cells.c, test_foundation.c,
\ test_strings.c), here as words of the host node's vocabulary. Rests on
\ core.f18, forth.f18 and numout.f18.
\
\ Constants the loader supplies:
\ MAX-INT the largest positive number: every bit but the top one
\ (X) word address of four cells of scratch for COMPARE and SEARCH
\ ---- stack ----
set HDR-NFA here ", 2SWAP #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: 2SWAP ( a b c d -- c d a b ) ROT push ROT pop ;
set HDR-NFA here ", 2OVER #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: 2OVER ( a b c d -- a b c d a b ) push push over over pop pop jump 2SWAP
set HDR-NFA here ", 2ROT #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: 2ROT ( a b c d e f -- c d e f a b ) push push 2SWAP pop pop jump 2SWAP
set HDR-NFA here ", 2>R #, 24 #, HDR-NFA #, HDR-LINK set HDR-LINK here : 2>R SWAP push push ;
set HDR-NFA here ", 2R> #, 24 #, HDR-NFA #, HDR-LINK set HDR-LINK here : 2R> pop pop SWAP ;
set HDR-NFA here ", 2R@ #, 24 #, HDR-NFA #, HDR-LINK set HDR-LINK here : 2R@ pop pop over over push push SWAP ;
set HDR-NFA here ", NOP #, 8 #, HDR-NFA #, HDR-LINK set HDR-LINK here : NOP' nop ;
set HDR-NFA here ", TRUE #, 8 #, HDR-NFA #, HDR-LINK set HDR-LINK here : TRUE -1 ;
set HDR-NFA here ", FALSE #, 8 #, HDR-NFA #, HDR-LINK set HDR-LINK here : FALSE 0 ;
set HDR-NFA here ", INVERT #, 8 #, HDR-NFA #, HDR-LINK set HDR-LINK here : INVERT inv ;
\ ---- memory ----
set HDR-NFA here ", 2@ #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: 2@ ( addr -- lo hi ) a! @+ @ ;
set HDR-NFA here ", 2! #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: 2! ( lo hi addr -- ) a! SWAP !+ ! ;
set HDR-NFA here ", -! #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: -! ( n addr -- ) a! NEGATE @ + ! ;
\ ---- comparison ----
set HDR-NFA here ", 0<> #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: 0<> if Z drop -1 ; Z: ;
set HDR-NFA here ", 0> #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: 0> -if NN drop 0 ; NN: if Z drop -1 ; Z: ;
set HDR-NFA here ", <> #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: <> xor jump 0<>
set HDR-NFA here ", <= #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: <= GREATER jump 0=
set HDR-NFA here ", >= #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: >= LESS jump 0=
set HDR-NFA here ", U< #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: U< over over xor -if SAME drop NIP jump 0<
SAME: drop - jump 0<
set HDR-NFA here ", U> #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: U> SWAP jump U<
set HDR-NFA here ", ABS #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: ABS -if P inv 1 + P: ;
set HDR-NFA here ", MAX #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: MAX over over LESS if A drop push drop pop ; A: drop drop ;
set HDR-NFA here ", MIN #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: MIN over over LESS if B drop drop ; B: drop push drop pop ;
set HDR-NFA here ", WITHIN #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: WITHIN ( n low high -- flag ) push over pop LESS push LESS inv pop and ;
\ ---- shifts ----
\ As v3, a count that is negative or as large as the cell is wide is an
\ error (code 9, "Shift count out of range").
set HDR-NFA here ", LSHIFT #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: LSHIFT ( x n -- x' )
-if NN jump BAD
NN: dup N-1 inv + -if BAD2 drop
L: if DONE -1 + push 2* pop jump L
DONE: drop ;
BAD2: drop
BAD: drop drop NODE-ERROR b! 9 !b ;
set HDR-NFA here ", RSHIFT #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: RSHIFT ( x n -- x' ) \ zeros come in at the top
-if NN jump BAD
NN: dup N-1 inv + -if BAD2 drop
L: if DONE -1 + push 2/ MAX-INT and pop jump L
DONE: drop ;
BAD2: drop
BAD: drop drop NODE-ERROR b! 9 !b ;
\ ---- doubles and mixed ----
set HDR-NFA here ", D- #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: D- DNEGATE jump D+
set HDR-NFA here ", DABS #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: DABS -if P jump DNEGATE P: ;
set HDR-NFA here ", D0= #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: D0= OR jump 0=
set HDR-NFA here ", D0< #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: D0< push drop pop jump 0<
set HDR-NFA here ", D= #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: D= D- jump D0=
set HDR-NFA here ", D2* #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: D2* 2* over -if P drop 1 + jump J P: drop J: push 2* pop ;
set HDR-NFA here ", D2/ #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: D2/ push a! 0 pop +* push drop a pop ;
set HDR-NFA here ", M+ #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: M+ S>D jump D+
set HDR-NFA here ", M- #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: M- S>D DNEGATE jump D+
\ ( d1 d2 -- d1 d2 flag ) the flag's top bit is set exactly when d1 < d2
: (D<)
dup push push over pop over over xor if TIE
drop over over xor -if HS drop drop jump S1
HS: drop push inv pop + inv
S1: -if N1 drop -1 jump D1 N1: drop 0
D1: pop SWAP ;
TIE: drop drop drop dup push push over pop
over over xor -if LS drop NIP jump S2
LS: drop push inv pop + inv
S2: -if N2 drop -1 jump D2 N2: drop 0
D2: pop pop ROT ;
set HDR-NFA here ", D< #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: D< (D<) push drop drop drop drop pop ;
set HDR-NFA here ", DMAX #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: DMAX (D<) if L drop push push drop drop pop pop ; L: drop drop drop ;
set HDR-NFA here ", DMIN #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: DMIN (D<) if L drop drop drop ; L: drop push push drop drop pop pop ;
\ ---- strings and memory ----
set HDR-NFA here ", ?TERMINAL #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: ?TERMINAL ( -- flag ) CONSOLE-STATUS b! @b ;
set HDR-NFA here ", CMOVE> #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: CMOVE> ( src dst u -- )
-if OK drop drop drop NODE-ERROR b! 1 !b ;
OK: if DONE -1 + push
over pop dup push + C@
over pop dup push + C!
pop jump OK
DONE: drop drop drop ;
\ FORTH-79: n cells from addr1 to addr2, the cell at addr1 first.
set HDR-NFA here ", MOVE #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: MOVE ( addr1 addr2 n -- )
-if OK drop drop drop ;
OK: if DONE push over a! @ over a! ! 1 + push 1 + pop pop -1 + jump OK
DONE: drop drop drop ;
set HDR-NFA here ", FILL #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: FILL ( baddr u c -- )
SWAP push SWAP pop \ c baddr u
-if OK drop drop drop NODE-ERROR b! 1 !b ;
OK: if DONE push over over C! 1 + pop -1 + jump OK
DONE: drop drop drop ;
set HDR-NFA here ", ERASE #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: ERASE ( baddr u -- ) 0 jump FILL
set HDR-NFA here ", BLANK #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: BLANK ( baddr u -- ) 32 jump FILL
set HDR-NFA here ", -TRAILING #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: -TRAILING ( baddr u -- baddr u' )
-if L drop 0 ;
L: if DONE over over + -1 + C@ -32 + if SP drop ;
SP: drop -1 + jump L
DONE: ;
set HDR-NFA here ", COMPARE #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: COMPARE ( a1 u1 a2 u2 -- n )
-if A drop 0 A: (X)+1 b! !b
SWAP -if B drop 0 B: dup (X) b! !b
(X)+1 b! @b
over over - -if GE drop drop jump M
GE: drop push drop pop
M:
L: if EQ push
over C@ over C@ - if SAME
-if GT drop drop drop pop drop -1 ;
GT: drop drop drop pop drop 1 ;
SAME: drop 1 + push 1 + pop pop -1 + jump L
EQ: drop drop drop (X) b! @b (X)+1 b! @b -
-if NN drop -1 ;
NN: if ZZ drop 1 ;
ZZ: ;
set HDR-NFA here ", SEARCH #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: SEARCH ( a1 u1 a2 u2 -- a3 u3 flag )
-if A drop 0 A: (X)+1 b! !b (X) b! !b
-if B drop 0 B: dup (X)+3 b! !b over (X)+2 b! !b
L: dup (X)+1 b! @b - -if TRY
drop drop drop (X)+2 b! @b (X)+3 b! @b 0 ;
TRY: drop over (X) b! @b (X)+1 b! @b
I: if MATCH push
over C@ over C@ xor if SAME
drop drop drop pop drop push 1 + pop -1 + jump L
SAME: drop 1 + push 1 + pop pop -1 + jump I
MATCH: drop drop drop -1 ;
set HDR-NFA here ", SCAN #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: SCAN ( baddr u c -- baddr' u' )
255 and push -if L drop 0
L: if DONE over C@ pop dup push xor if FOUND
drop push 1 + pop -1 + jump L
FOUND: drop
DONE: pop drop ;
set HDR-NFA here ", SKIP #, 0 #, HDR-NFA #, HDR-LINK set HDR-LINK here
: SKIP ( baddr u c -- baddr' u' )
255 and push -if L drop 0
L: if DONE over C@ pop dup push xor if SAME drop jump DONE
SAME: drop push 1 + pop -1 + jump L
DONE: pop drop ;
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