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Minor fixes to keyboard_xt.c.

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This commit is contained in:
OBattler
2021-03-29 23:51:20 +02:00
parent 592de50f17
commit 1c5b8099ae
1 changed files with 28 additions and 25 deletions
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53
src/device/keyboard_xt.c
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@@ -400,11 +400,11 @@ kbd_poll(void *priv)
kbd->blocked = 1;
picint(2);
#ifdef ENABLE_KEYBOARD_XT_LOG
kbd_log("keyboard_xt : take IRQ\n");
kbd_log("kbd_poll(): keyboard_xt : take IRQ\n");
#endif
}
if (key_queue_start != key_queue_end && !kbd->blocked) {
if ((key_queue_start != key_queue_end) && !kbd->blocked) {
kbd->key_waiting = key_queue[key_queue_start];
kbd_log("XTkbd: reading %02X from the key queue at %i\n",
kbd->key_waiting, key_queue_start);
@@ -513,6 +513,8 @@ kbd_write(uint16_t port, uint8_t val, void *priv)
kbd->pb = val;
ppi.pb = val;
timer_process();
speaker_update();
if ((kbd->type <= 1) && !(kbd->pb & 0x08))
speaker_gated = speaker_enable = 1;
@@ -554,32 +556,33 @@ kbd_read(uint16_t port, void *priv)
switch (port) {
case 0x60:
if ((kbd->type <= 1) && (kbd->pb & 0x80))
ret = (kbd->pd & ~0x02) | (hasfpu ? 0x02 : 0x00);
else if (((kbd->type == 2) || (kbd->type == 3)) && (kbd->pb & 0x80))
ret = 0xff; /* According to Ruud on the PCem forum, this is supposed to return 0xFF on the XT. */
else if ((kbd->type == 9) && (kbd->pb & 0x80)) {
/* Zenith Data Systems Z-151
* SW1 switch settings:
* bits 6-7: floppy drive number
* bits 4-5: video mode
* bit 2-3: base memory size
* bit 1: fpu enable
* bit 0: fdc enable
*/
ret = get_fdd_switch_settings();
if ((kbd->pb & 0x80) && ((kbd->type <= 3) || (kbd->type == 9))) {
if (kbd->type <= 1)
ret = (kbd->pd & ~0x02) | (hasfpu ? 0x02 : 0x00);
else if ((kbd->type == 2) || (kbd->type == 3))
ret = 0xff; /* According to Ruud on the PCem forum, this is supposed to return 0xFF on the XT. */
else if (kbd->type == 9) {
/* Zenith Data Systems Z-151
* SW1 switch settings:
* bits 6-7: floppy drive number
* bits 4-5: video mode
* bit 2-3: base memory size
* bit 1: fpu enable
* bit 0: fdc enable
*/
ret = get_fdd_switch_settings();
ret |= get_videomode_switch_settings();
/* base memory size should always be 64k */
ret |= 0x0c;
ret |= get_videomode_switch_settings();
if (hasfpu)
ret |= 0x02;
/* Base memory size should always be 64k */
ret |= 0x0c;
} else
ret = kbd->pa;
break;
if (hasfpu)
ret |= 0x02;
}
} else
ret = kbd->pa;
break;
case 0x61:
ret = kbd->pb;