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feat(v4.0.0): the wait replaces looking and the console release; step 6d written up

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The engine's console release (v4_fabric_interrupt_error), a device's
pending, and the count of words since a look are removed: nothing uses
them.  MESH.md 4.1, 7b and 7c say what was built, where it differs from
what was approved and why, and what is still a limit; step 6d is marked
built, with the defects found on the way.

make -C v4 test and sanitize at both widths, hosted-check, lint; three
bare-metal boots.  POST 538 of 538, word_count=317,
dict_hash=0x6a39c0bb9d183418 on all six.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
rajames
2026-10-08 01:24:09 -04:00
co-authored by Claude Opus 5.5
parent ec817a8264
commit 2b587206ee
13 changed files with 638 additions and 181 deletions
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v4/include/v4/node.h
-8
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@@ -113,7 +113,6 @@ typedef struct {
unsigned last_from; /* the port the last read from "any" took its word from */
unsigned writers; /* bit k: the neighbour on port k is blocked writing to this node */
unsigned readers; /* bit k: the neighbour on port k is blocked reading from this node */
unsigned since_look; /* words taken from this node since it last fetched either of those */
unsigned offers; /* bit k: a word is offered on port k (the wait: docs/v4.0.0/MESH.md 7c) */
v4_cell offer[V4_PORTS]; /* the words offered */
int waiting; /* non-zero: the read it is blocked in is the wait */
@@ -225,13 +224,6 @@ void v4_node_port_attach(v4_node *n, v4_cell base);
/* The neighbour has taken what the node wrote. */
void v4_node_port_served(v4_node *n);
/* How many words the node has had taken since it last looked at its
* neighbours (a fetch of either of the two status addresses). A node that
* looks before it begins a message (MESH.md 7a) and is blocked writing with
* this at 0 is blocked on the first word of the message: nothing of it has
* gone. */
unsigned v4_node_words_since_look(const v4_node *n);
/* THERE IS NO ONE ON THE PORT the node is blocked at -- writing to it, or
* reading from that one port -- and there will not be. A node that can
* take an error (it has an error register and a fault table: node.h,