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Use a BIOS call to check for keyboard input, where possible. (Not on MS C

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or Watcom/386.) To Do: Make it possible for Watcom/386?
This commit is contained in:
William McBrine
2006-12-13 20:40:50 +00:00
parent 60663eef46
commit d6eb90ed46
1 changed files with 20 additions and 3 deletions
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23
dos/pdckbd.c
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@@ -13,13 +13,20 @@
#ifdef __DJGPP__
# include <signal.h>
#else
#endif
/* MS C and Watcom don't return flags from int86() */
#if defined(MSC) || (defined(__WATCOMC__) && defined(__386__))
# define USE_KBHIT
#endif
#ifdef USE_KBHIT
# include <conio.h>
#endif
#include "pdcdos.h"
RCSID("$Id: pdckbd.c,v 1.70 2006/12/05 23:11:43 wmcbrine Exp $");
RCSID("$Id: pdckbd.c,v 1.71 2006/12/13 20:40:50 wmcbrine Exp $");
/************************************************************************
* Table for key code translation of function keys in keypad mode *
@@ -82,7 +89,8 @@ static bool mouse_avail = FALSE, mouse_vis = FALSE, mouse_moved = FALSE,
static unsigned char mouse_scroll = 0;
static PDCREGS ms_regs, old_ms;
static unsigned short shift_status, old_shift = 0;
static unsigned char keyboard_function = 0xff, shift_function = 0xff;
static unsigned char keyboard_function = 0xff, shift_function = 0xff,
check_function = 0xff;
static const unsigned short button_map[3] = {0, 2, 1};
@@ -158,11 +166,13 @@ bool PDC_check_bios_key(void)
if (scan == regs.h.al && getdosmembyte(0x496) == 0x10)
{
keyboard_function = 0x10;
check_function = 0x11;
shift_function = 0x12;
}
else
{
keyboard_function = 0;
check_function = 1;
shift_function = 2;
}
}
@@ -227,7 +237,14 @@ bool PDC_check_bios_key(void)
old_shift = shift_status;
#ifndef USE_KBHIT
regs.h.ah = check_function;
PDCINT(0x16, regs);
return !(regs.W.flags & 64);
#else
return kbhit();
#endif
}
static int _process_mouse_events(void)