137 lines
3.2 KiB
C
137 lines
3.2 KiB
C
/*
|
|
* Copyright (c) 1992, 1993, 1996
|
|
* Berkeley Software Design, Inc. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Berkeley Software
|
|
* Design, Inc.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY Berkeley Software Design, Inc. ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL Berkeley Software Design, Inc. BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* BSDI int16.c,v 2.2 1996/04/08 19:32:47 bostic Exp
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "doscmd.h"
|
|
#include "tty.h"
|
|
|
|
#define K_NEXT *(u_short *)0x41a
|
|
#define K_FREE *(u_short *)0x41c
|
|
|
|
#define HWM 16
|
|
volatile int poll_cnt = 0;
|
|
|
|
void
|
|
wakeup_poll(void)
|
|
{
|
|
if (poll_cnt <= 0)
|
|
poll_cnt = HWM;
|
|
}
|
|
|
|
void
|
|
reset_poll(void)
|
|
{
|
|
poll_cnt = HWM;
|
|
}
|
|
|
|
void
|
|
sleep_poll(void)
|
|
{
|
|
#if 0
|
|
printf("sleep_poll: poll_cnt=%d\n", poll_cnt);
|
|
if (poll_cnt == 14)
|
|
tmode = 1;
|
|
#endif
|
|
if (--poll_cnt <= 0) {
|
|
poll_cnt = 0;
|
|
while (KbdEmpty() && poll_cnt <= 0) {
|
|
#if 0
|
|
softint(0x28);
|
|
#endif
|
|
if (KbdEmpty() && poll_cnt <= 0)
|
|
tty_pause();
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
int16(regcontext_t *REGS)
|
|
{
|
|
if (!xmode && !raw_kbd) {
|
|
if (vflag) dump_regs(REGS);
|
|
fatal ("int16 func 0x%x only supported in X mode\n", R_AH);
|
|
}
|
|
switch(R_AH) {
|
|
case 0x00:
|
|
case 0x10: /* Get enhanced keystroke */
|
|
poll_cnt = 16;
|
|
while (KbdEmpty())
|
|
tty_pause();
|
|
R_AX = KbdRead();
|
|
break;
|
|
|
|
case 0x01: /* Get keystroke */
|
|
case 0x11: /* Get enhanced keystroke */
|
|
if (KbdEmpty()) {
|
|
R_FLAGS |= PSL_Z;
|
|
break;
|
|
}
|
|
R_FLAGS &= ~PSL_Z;
|
|
R_AX = KbdPeek();
|
|
break;
|
|
|
|
case 0x02:
|
|
R_AL = tty_state();
|
|
break;
|
|
|
|
case 0x12:
|
|
R_AH = tty_estate();
|
|
R_AL = tty_state();
|
|
break;
|
|
|
|
case 0x03: /* Set typematic and delay rate */
|
|
break;
|
|
|
|
case 0x05:
|
|
KbdWrite(R_CX);
|
|
break;
|
|
|
|
case 0x55:
|
|
R_AX = 0x43af; /* Empirical value ... */
|
|
break;
|
|
|
|
case 0x92:
|
|
R_AH = 0x00;
|
|
break;
|
|
|
|
case 0xa2:
|
|
debug(D_HALF, "122-key keyboard support check\n");
|
|
break;
|
|
|
|
default:
|
|
unknown_int2(0x16, R_AH, REGS);
|
|
break;
|
|
}
|
|
}
|