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Back to the generic PDC_napms() for DOS -- the uclock() thing doesn't

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work reliably.
This commit is contained in:
William McBrine
2007-01-04 15:27:38 +00:00
parent 97139fbd53
commit 4d8ea88a53
1 changed files with 5 additions and 23 deletions
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28
dos/pdcutil.c
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@@ -13,13 +13,7 @@
#include "pdcdos.h"
#ifdef __DJGPP__
# include <unistd.h>
#endif
#include <time.h>
RCSID("$Id: pdcutil.c,v 1.19 2007/01/01 21:04:27 wmcbrine Exp $");
RCSID("$Id: pdcutil.c,v 1.20 2007/01/04 15:27:38 wmcbrine Exp $");
void PDC_beep(void)
{
@@ -32,34 +26,22 @@ void PDC_beep(void)
PDCINT(0x10, regs);
}
#ifdef __DJGPP__
# define PDCCLOCK_T uclock_t
# define PDCCLOCK() uclock()
#else
# define PDCCLOCK_T long
# define PDCCLOCK() getdosmemdword(0x46c)
#endif
void PDC_napms(int ms)
{
PDCREGS regs;
PDCCLOCK_T goal, start, current;
long goal, start, current;
PDC_LOG(("PDC_napms() - called: ms=%d\n", ms));
#ifdef __DJGPP__
goal = (PDCCLOCK_T)ms * UCLOCKS_PER_SEC / 1000;
#else
goal = DIVROUND((PDCCLOCK_T)ms, 50);
#endif
goal = DIVROUND((long)ms, 50);
if (!goal)
goal++;
start = PDCCLOCK();
start = getdosmemdword(0x46c);
goal += start;
while (goal > (current = PDCCLOCK()))
while (goal > (current = getdosmemdword(0x46c)))
{
if (current < start) /* in case of midnight reset */
return;