mirror of
https://git.k-space.ee/arti/vt1200.git
synced 2026-10-30 12:03:54 +02:00
SDD
6d8097360c
The tablet was opt-in (VT1200_TABLET=1) with the mouse as the default. Invert
it: the tablet is selected with no environment, and VT1200_MOUSE=1 (a
value-aware inverse switch, so VT1200_MOUSE=0 selects the tablet) restores the
VSXXX-AA mouse.
The real terminal almost certainly has a mouse, so this is a DELIBERATE
divergence from the target machine, documented in README.md alongside
VT1200_SKIP_LEVEL1 and VT1200_IO_PATH_STUB. It is on by default because the OS
is only reachable through the skip gate and there the tablet's absolute reports
are what make the Terminal Manager usable.
Baselines re-measured, both unchanged:
* no-env progress.lua at 200 frames: PC=3FDCE400 samples=198 (3 PCs) -> same.
DUART2-B is never addressed in that window (the T/R exchange is OS-phase
only), so the reply bytes A0 04 00 00 vs A0 02 00 00 and the 5- vs 3-byte
framing do not reach the CPU.
* VT1200_SKIP_LEVEL1=1 frame 3000: pixel-identical for tablet and
VT1200_MOUSE=1 (magick AE=0); both reproduce the committed
tablet_cursor_*.png frames exactly.
VT1200_TABLET is now a no-op; run.sh's tablet mode is reported to the owner for
rewording (its comments are his).