iface_slot reads the declaration slot assign_slots recorded, so a call site
emits an offset the class table actually has and refuses a method the interface
does not declare. The x128 fixture proves one call site reaching two classes,
one object reaching two interface tables, a nested call with a one-byte result,
and byte/word arguments returning a word with the frame stack restored, while
self stays the underlying object.

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it_find selects the table a class emitted for an interface, refusing a pair the
class does not implement, and if_assign, if_arg_push, if_elem_store, and
if_elem_load give assignment, argument passing, field, and array storage one
API that keeps all four value bytes. Two x128 fixtures prove the class and null
conversions, verbatim copies, array stride, argument layout, and the result
area, while the semantic suite still rejects an invalid conversion.

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Classes now build one table per implemented interface, in implements order with
one two-byte entry per interface slot, and a failed class rolls back so a
missing method address is refused instead of dispatching to zero. The MAP gains
one TABLE record per table, and the x128 fixture checks table contents, distinct
per-class tables, both rollback paths, and the exact MAP text.

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Lets pass 2 resolve absolute flow targets against a final CODE base and verifies a source program through deterministic PRG/MAP output and a real x128 run. Count-mode sizing, method/class MAP records, and unresolved-reference diagnostics remain in-progress.

Adds control flow, field access, forward self calls, method/program entry tracking, and E227 emission-failure reporting. Print vectors now live in safe zero-page cells to avoid the 6502 indirect-JMP page bug.

Statement emission now runs from parser pass 2: assignment, byte + and -, and
print reach codegen.s through emit.s, and the statements fixture executes the
emitted bytes in x128. Restoring the parser trace fixture's length arithmetic
(it emitted between the two halves of the subtraction, which clears carry)
brings the 41-fixture parser verification back to green after emit.s joined
the link.

Also check in the vim clone's improved C128 build and the Power C
reverse-engineering notes and tools.

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Generated programs now have control-flow emission, text and fault output, a
free-list heap, class descriptors, and object construction/deletion. Each
story lands with an x128 fixture and verifier so the runtime stays proven
before the parser drives code generation.

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Co-Authored-By: Codebuff <noreply@codebuff.com>