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vt: kbd lockup fix

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minjaesong
2026-06-08 10:55:15 +09:00
parent ffc1d420cd
commit 6068080bcb
1 changed files with 11 additions and 0 deletions
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11
assets/disk0/tvdos/VTMGR.SYS
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@@ -544,6 +544,17 @@ while (running) {
if (!running) break if (!running) break
// Re-assert ownership of the cooked keyboard. keyboardInputRequested (-39)
// is a single global flag gating whether typed chars reach keyboardBuffer;
// the dispatcher relies on it staying 1. An active-pane app that used cooked
// host input (sys.read / sys.readKey leave it at 0) or crashed mid-read
// leaves it off, and the shimmed con.getch — unlike the base getch, which
// calls sys.readKey (→ -39=1) every time — never re-asserts it. That is why
// the current VT's keyboard locks up (and why it never happens without
// vtmgr). Re-enable ONLY when it is actually off: poke(-39,1) clears
// keyboardBuffer, so doing it every frame would drop chars typed last frame.
if (sys.peek(-39) === 0) sys.poke(-39, 1)
// drain typed chars into the active pane's queue // drain typed chars into the active pane's queue
while (sys.peek(-50) !== 0) { while (sys.peek(-50) !== 0) {
let k = sys.peek(-38) let k = sys.peek(-38)