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Fixed the PS/2 keyboard and mouse latch initialization - now the mouse latch actually works, fixes mouse in AMI WinBios Setup and 8603 errors on MCA IBM PS/2's.

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OBattler
2023-04-12 20:23:31 +02:00
parent 958bd387c1
commit b753c675fb
2 changed files with 25 additions and 11 deletions
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18
src/device/keyboard_at.c
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@@ -619,6 +619,8 @@ static const scancode scancode_set3[512] = {
// clang-format on
};
#define USE_RESET_DELAY 1
// #define ENABLE_KEYBOARD_AT_LOG 1
#ifdef ENABLE_KEYBOARD_AT_LOG
int keyboard_at_do_log = ENABLE_KEYBOARD_AT_LOG;
@@ -1532,6 +1534,7 @@ write_output(atkbd_t *dev, uint8_t val)
uint8_t kbc_ven = dev->flags & KBC_VEN_MASK;
#if 0
/* PS/2: Handle IRQ's. */
if ((dev->flags & KBC_TYPE_MASK) >= KBC_TYPE_PS2_NOREF) {
/* IRQ 12 */
@@ -1540,6 +1543,7 @@ write_output(atkbd_t *dev, uint8_t val)
/* IRQ 1 */
picint_common(1 << 1, 0, val & 0x10);
}
#endif
/* AT, PS/2: Handle A20. */
if ((old ^ val) & 0x02) { /* A20 enable change */
@@ -2232,15 +2236,23 @@ kbd_key_reset(atkbd_t *dev, int do_fa)
dev->sc_or = 0;
if (do_fa)
if (do_fa) {
add_data_kbd_front(dev, 0xfa);
add_data_kbd_front(dev, 0xaa);
}
#ifdef USE_RESET_DELAY
dev->reset_delay = RESET_DELAY_TIME;
if (do_fa)
dev->kbd_state = DEV_STATE_MAIN_WANT_RESET;
else
dev->kbd_state = DEV_STATE_RESET;
#else
if (!do_fa)
dev->kbd_state = DEV_STATE_MAIN_1;
#endif
}
static void
@@ -2592,7 +2604,7 @@ kbc_process_cmd(void *priv)
case 0xdd: /* disable A20 address line */
case 0xdf: /* enable A20 address line */
kbd_log("ATkbc: %sable A20\n", (dev->ib == 0xdd) ? "dis" : "en");
write_output(dev, (dev->output_port & 0xfd) | (dev->ib & 0x02));
write_output_fast_a20(dev, (dev->output_port & 0xfd) | (dev->ib & 0x02));
break;
case 0xe0: /* read test inputs */
@@ -2827,8 +2839,10 @@ kbd_reset(void *priv)
/* Stage 1. */
dev->status = (dev->status & 0x0f) | (dev->input_port & 0xf0);
#ifdef USE_RESET_DELAY
/* Wait for command AA. */
dev->kbc_state = KBC_STATE_RESET;
#endif
/* Reset the keyboard. */
kbd_key_reset(dev, 0);