valter/dosbox-staging
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Changed main loop to support new timing and added support to disable the pc speaker.

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@524
This commit is contained in:
Sjoerd van der Berg 2002-11-17 11:25:59 +00:00
parent eef522b258
commit 9c5c2198aa
1 changed files with 31 additions and 21 deletions
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52
src/dosbox.cpp
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@ -84,27 +84,36 @@ void INT10_Init(Section*);
static LoopHandler * loop;
Bitu RemainTicks;;
Bitu LastTicks;
static Bitu Normal_Loop(void) {
Bit32u new_ticks;
new_ticks=GetTicks();
if (new_ticks>LastTicks) {
Bit32u ticks=new_ticks-LastTicks;
if (ticks>20) ticks=20;
LastTicks=new_ticks;
TIMER_AddTicks(ticks);
Bitu ret,NewTicks;
while (RemainTicks) {
ret=PIC_RunQueue();
if (ret) return ret;
RemainTicks--;
TIMER_AddTick();
GFX_Events();
#if C_DEBUG
if (DEBUG_ExitLoop()) return 0;
#endif
}
GFX_Events();
TIMER_CheckPIT();
PIC_runIRQs();
Bitu ret;
do {
PIC_IRQAgain=false;
ret=(*cpudecoder)(cpu_cycles);
} while (!ret && PIC_IRQAgain);
#if C_DEBUG
if (DEBUG_ExitLoop()) return 0;
#endif
return ret;
NewTicks=GetTicks();
if (NewTicks>LastTicks) {
RemainTicks+=NewTicks-LastTicks;
if (RemainTicks>20) {
// LOG_DEBUG("Ticks to handle overflow %d",RemainTicks);
RemainTicks=20;
}
LastTicks=NewTicks;
}
//TODO Make this selectable in the config file, since it gives some lag */
if (!RemainTicks) {
SDL_Delay(1);
return 0;
}
return 0;
}
void DOSBOX_SetLoop(LoopHandler * handler) {
@ -127,7 +136,7 @@ static void DOSBOX_RealInit(Section * sec) {
/* Initialize some dosbox internals */
errorlevel=section->Get_int("warnings");
MSG_Add("DOSBOX_CONFIGFILE_HELP","General Dosbox settings\n");
LastTicks=GetTicks();
RemainTicks=0;LastTicks=GetTicks();
DOSBOX_SetLoop(&Normal_Loop);
MSG_Init(section);
}
@ -158,7 +167,7 @@ void DOSBOX_Init(void) {
secprop->Add_string("snapshots","snapshots");
secprop=control->AddSection_prop("cpu",&CPU_Init);
secprop->Add_int("cycles",4000);
secprop->Add_int("cycles",1800);
secprop->AddInitFunction(&DMA_Init);
secprop->AddInitFunction(&VGA_Init);
@ -183,6 +192,7 @@ void DOSBOX_Init(void) {
secprop->Add_bool("cms",false);
secprop=control->AddSection_prop("speaker",&PCSPEAKER_Init);
secprop->Add_bool("enabled",true);
secprop->Add_bool("sinewave",false);
secprop->AddInitFunction(&TANDYSOUND_Init);
secprop->Add_bool("tandy",false);