The RIO cockpit board now runs sustained sessions with button mashing;
dropouts self-heal in ~1-3s. Documented in RIO-NOTES.md:
- directserial RIO_TAP=<path> (host env): logs every TX/RX byte with
host-us + emu-ms timestamps, plus config/RTS/DTR/break lines. This
instrument found every root cause below.
- Confs: rxburst:16 restored (no-burst reply pacing made the game ACK
~14ms late -> board dropped on the first long analog stream; the old
'rxburst corrupts boot' belief was the then-unpatched PCSPAK crash).
priority=highest,highest (unfocused DOSBox was demoted and blew the
ACK deadline).
- BTL4OPT.EXE patch lineage (in ALPHA_1/, zip left pristine):
v2 full DISABLE_AND_DIE NOPs (v1 left the IRQ/RTS-retract prologue
live -> first protocol error deafened the driver), v3 TXMAXIDLE 4->32
(kills the button-press ACK-window livelock), v4 analog retry limit
15s->0.5s (dev value was 0.2s; recovery now near-instant).
- Board firmware patch plan recorded for the EPROM-dump route.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
CydandClaude Fable 5
377047f37d
