void playb_close (void)
{
soundoff ();
#ifndef __ZTC__
setvect (TIMER_TICK_INTR, n_oldtmint);
#else
int_restore(TIMER_TICK_INTR);
#endif
free (n_buff);
}
/**
* Waits (sleeps) for the given number of ticks.
* Checks for keystroke.
*
* @returns BIOS scan code if available, 0 if not.
* @param ticks Number of ticks to sleep.
* @param stop_on_key Whether to stop immediately upon keypress.
*/
uint8_t wait(uint16_t ticks, uint8_t stop_on_key)
{
long ticks_to_wait, delta;
uint16_t old_flags;
uint32_t prev_ticks, t;
uint8_t scan_code = 0;
/*
* We may or may not be called with interrupts disabled. For the duration
* of this function, interrupts must be enabled.
*/
old_flags = int_query();
int_enable();
/*
* The 0:046c wraps around at 'midnight' according to a 18.2Hz clock.
* We also have to be careful about interrupt storms.
*/
ticks_to_wait = ticks;
prev_ticks = read_dword(0x0, 0x46c);
do
{
halt();
t = read_dword(0x0, 0x46c);
if (t > prev_ticks)
{
delta = t - prev_ticks; /* The temp var is required or bcc screws up. */
ticks_to_wait -= delta;
}
else if (t < prev_ticks)
ticks_to_wait -= t; /* wrapped */
prev_ticks = t;
if (check_for_keystroke())
{
scan_code = get_keystroke();
bios_printf(BIOS_PRINTF_INFO, "Key pressed: %x\n", scan_code);
if (stop_on_key)
return scan_code;
}
} while (ticks_to_wait > 0);
int_restore(old_flags);
return scan_code;
}
/*
* This function gets called just before we go back home to the command
* interpreter. On VMS it puts the terminal back in a reasonable state.
* Another no-operation on CPM.
*/
ttclose()
{
#if AMIGA
Close(terminal);
#endif
#if VMS
int status;
int iosb[1];
ttflush();
status = SYS$QIOW(EFN, iochan, IO$_SETMODE, iosb, 0, 0,
oldmode, sizeof(oldmode), 0, 0, 0, 0);
if (status!=SS$_NORMAL || (iosb[0]&0xFFFF)!=SS$_NORMAL)
exit(status);
status = SYS$DASSGN(iochan);
if (status != SS$_NORMAL)
exit(status);
#endif
#if CPM
#endif
#if MSDOS && !__OS2__
int_restore(0x23); /* de-install control-break handler */
#endif
#if BSDUNIX
stty(1, &ostate);
#if NONBLOCK
fcntl(0,F_SETFL,oldstatus);
#endif
#endif
#if linux || __OpenBSD__ || __APPLE__
tcsetattr(1, TCSADRAIN, &ostate); // return to original mode
#endif
#if NCURSES
endwin();
#endif
}