FABRIC.md item 4.4ac: screendump-verify boot scrollback, mark done

Browse Source

Confirms 4.4ac's boot-mode scrollback ring actually works: injected
'99999 SCROLL-BACK' over the serial chardev socket (same mechanism the
old DOE_INJECT automation used to drive EXEC-DOE -- SCROLL-BACK is a
plain FORTH word, and sk_repl_step()'s input comes from console_getc()
polling the UART), then captured the framebuffer with QEMU's own HMP
screendump command over its monitor socket. No GTK session or physical
typing needed, correcting this item's own earlier assumption that it
would.

Result (logs/screendump-4.4ac/amd64-scrollback.png) shows PARITY:
MAMA_INIT, Init: Mama birth OK, ACL: CAPSULE-BIRTH pinned STRICT,
Starting heartbeat..., and HADES DoE rows from steps 58-73 all on
screen at once -- genuinely early POST content, not just the pre-TTF
tail. Also confirms a small pre-existing 4.4q limitation (live cursor
draw corrupting a scrolled-back view) is unaffected by this item, not
a new regression.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

...

This commit is contained in:

Robert Allan James

2026-08-12 18:25:52 -04:00

co-authored by Claude Sonnet 5

parent 3396e9a7b4

commit 31a86ee50d

3 changed files with 8590 additions and 7 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download Patch File Download Diff File Expand all files Collapse all files

logs/screendump-4.4ac/amd64-scrollback.png

BIN

Binary file not shown.

Side by Side After Width:  |  Height:  |  Size: 35 KiB

logs/screendump-4.4ac/qemu-amd64.log

+8571

File diff suppressed because it is too large Load Diff