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AT / PS/2 keyboard: It turns out a few other commands also cancel the pending command, fixes #4981.

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OBattler
2025-01-10 21:56:04 +01:00
parent a2edcbfbba
commit 78a81b0d7f
1 changed files with 11 additions and 5 deletions
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16
src/device/keyboard_at.c
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@@ -1961,18 +1961,24 @@ keyboard_at_write(void *priv)
}
} else {
if (dev->flags & FLAG_CTRLDAT) {
/* Special case - another command during another command that wants input - proceed
/*
Special case - another command during another command that wants input - proceed
as normal but do not cancel the command (so keep waiting for input), unless the
command in progress is ED (Set/reset LEDs). */
if (val == 0xed) {
keyboard_scan = 1;
command in progress is ED (Set/reset LEDs).
It appears to also apply to command EE (Echo), F4 (Enable), F5 (Diable and Set
Default), and F6 (SetDefault).
*/
if ((val == 0xed) || (val == 0xee) || (val == 0xf4) || (val == 0xf5) || (val == 0xf6))
dev->flags &= ~FLAG_CTRLDAT;
} else
else
dev->state = DEV_STATE_MAIN_WANT_IN;
}
switch (val) {
case 0xed: /* set/reset LEDs */
if ((dev->flags & FLAG_CTRLDAT) && (dev->command == 0xed))
keyboard_scan = 1;
dev->command = val;
keyboard_at_log("%s: set/reset LEDs\n", dev->name);
dev->flags |= FLAG_CTRLDAT;