其他智力游戏

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Visual C++

TIMER.CPP：源码内容

							#define TIMER_CPP
#include <dos.h>
#include "timer.h"
#include <stdlib.h>
long Time;
void interrupt (*oldtimer)(...);
void interrupt NewTimer(...);
void setspeed(int freq){ //  65536>freq>18.2
	unsigned i;
	if(freq)i=(int)(11931817l/freq/10);
	else i=0;
	asm{
		cli
		mov dx,0x43
		mov al,0x36
		out dx,al
		sub dx,3
		mov ax,i
		out dx,al
		mov al,ah
		out dx,al
		sti
	}
}
void speedback(){asm{
		cli
		mov dx,0x43
		mov al,0x36
		out dx,al
		sub dx,3
		mov al,0
		out dx,al
		out dx,al
		sti
}}
	int n,p,cur;
void installTimer(){
	setspeed(50);
	// music
	initPiano();
	n=0,p=0,cur=0;
	curTime=0;
	Time=1;
	gamespeed=2;
	oldtimer=getvect(INTR_TIME);
	setvect(INTR_TIME,NewTimer);
}
void uninstallTimer(){
	speedback();
	free(music);
	setvect(INTR_TIME,oldtimer);
}
void interrupt NewTimer(...){
 //	int i,j;
//	if(){
	if(!p){
		p=1;
		WriteFM(0x04,0x80);
		WriteFM(0x03,216);
		WriteFM(0x04,0x42);
	}
	if((ReadFM()&0xe0)>=0xa0){
		WriteFM(0x04,0x82);
		p++;
		if(p==3){FMSoundOFF(music[cur].note,music[cur].octave);p=0;}
	}
	if(curTime>Time){
		if(!p){delayFM(1);FMSoundOFF(music[cur].note,music[cur].octave);}
		timerstatus=READY;
		Time=curTime+music[n].time;
		FMSound(music[n].note,music[n].octave);
		cur=n++;
		if(n==length)n=0;
		//playnote(0,100,mu[(n++)%12],4,1,0,5,gamespeed);
	}
	curTime++;//	newtim();
	oldtimer();
}
void delay_Timer(long d){
	d+=curTime;
	while(curTime<d);
}

						