feat(v4.0.0): a node is sent text as a message and sends back what it prints

MESH.md step 3.  The ports are the transport; the message is what is
transported: to, from, type, heat and TTL, ACL tag, sequence, length, then
text four characters to a word.

- quit.v4: a node with nothing to do is blocked reading "any port"; text
  for it is interpreted; (FINISH) sends what it printed and then how the
  text ended, and it waits again
- core.v4: EMIT keeps what is printed, (FLUSH-OUT) and (HDR) send it to the
  sender on the port the message came on.  EMIT still needs one free data
  cell and no more; it works on the return stack and in A and B
- message.h/.c: the same format for whatever is on a port and is not a node
- boot.c: the boot is the node's console on port 1 and its kernel on port 0
- the prompt tests are a console that speaks messages
- gone: v4_line_begin, v4_line_done, v4_line_status; writing a node's input
  buffer and setting its P from outside; any use of CONSOLE-TX

Verified: make -C v4 test (test_host_quit.c 1283 checks, the full-stack
figures unchanged) and make -C v4 sanitize pass; hosted-check passes on
three ISAs with POST 550 of 550; clean qemu with STARFORTH_V4=1 passes POST
and answers lines typed at each prompt on amd64, aarch64 and riscv64
(logs/20261006-110551, -111621, -111341).  -110837 is an aarch64 run ended
by the test wrapper's limit while still in UEFI firmware; it shows nothing
about v4.

Not done: KEY, EXPECT and QUERY still read the console's input registers;
a message not for this node is let go (step 4).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
rajames
2026-10-06 11:19:46 -04:00
co-authored by Claude Opus 5.5
parent 42610e844f
commit a041b401ea
24 changed files with 844 additions and 178 deletions
+2 -2
View File
@@ -67,9 +67,9 @@ int main(void)
len = strlen(line);
if (len && line[len - 1] == '\n') len--;
how = v4_boot_line(&boot, line, (unsigned)len);
if (how == V4_LINE_COMPLETED) fputs(" ok\n", stdout);
if (how == V4_TEXT_COMPLETED) fputs(" ok\n", stdout);
if (leaving) { fflush(stdout); return 0; }
else if (how == V4_LINE_ERROR) fputs(" ERROR\n", stdout);
else if (how == V4_TEXT_ERROR) fputs(" ERROR\n", stdout);
else if (how == V4_BOOT_LINE_TOO_LONG) fputs("Line too long\n ERROR\n", stdout);
else if (how == V4_BOOT_LINE_NO_INPUT) { putchar('\n'); return 0; }
else if (how == V4_BOOT_LINE_STOPPED) { fflush(stdout); fprintf(stderr, "starforth4: the node stopped on a fault\n"); return 1; }