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Don't raise irq 0 when programming a new timer instantatanously. Take in account that the hardware requires some time to be setup as well.

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2669
This commit is contained in:
Peter Veenstra 2006-07-10 09:27:37 +00:00
parent 7a842811f0
commit 06297a72ae
1 changed files with 5 additions and 2 deletions
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7
src/hardware/timer.cpp
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@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: timer.cpp,v 1.38 2006-05-19 10:34:02 qbix79 Exp $ */
/* $Id: timer.cpp,v 1.39 2006-07-10 09:27:37 qbix79 Exp $ */
#include <math.h>
#include "dosbox.h"
@ -295,8 +295,11 @@ static void write_p43(Bitu /*port*/,Bitu val,Bitu /*iolen*/) {
if (latch == 0) {
PIC_RemoveEvents(PIT0_Event);
if (!counter_output(0) && mode)
if (!counter_output(0) && mode) {
PIC_ActivateIRQ(0);
//Don't raise instantaniously. (Origamo)
if(CPU_Cycles < 25) CPU_Cycles = 25;
}
if(!mode)
PIC_DeActivateIRQ(0);
}