philips.c

来自「isp1160_pci_usb_host_MP100.rar USB主机设备程序」· C语言 代码 · 共 88 行

#include <bios.h>
#include <dos.h>

void pwait(unsigned int delay)
{
 unsigned int d_cnt=0;
 unsigned int m_cnt;

 do
  {
   d_cnt++;
   do
	{
	 m_cnt++;
	}
   while(m_cnt<delay);
   m_cnt=0;
  }
 while(d_cnt<delay);
}

unsigned long timer(void)
{
 unsigned long longtime;

 struct  time t;

 gettime(&t);

 longtime=(((((t.ti_hour*60)+t.ti_min)*60)+t.ti_sec)*100)+t.ti_hund;

 return(longtime);
}


unsigned char get16_bit(unsigned int position,unsigned int int_data)
{
 unsigned int temp;
 unsigned int result;

 temp=0x0001;
 temp=temp<<position;
 result=temp&int_data;

// printf("\nData:%4X, Position=%1d Mask=%4X, Product=%4X",int_data,position,temp,result);

 if(result!=0) {return(1);}
 else { return(0);}
}


char read_key(unsigned char mode)
{
 char key_buff;
 unsigned int temp;

 if(mode==2)
 {
  while(bioskey(1) == 0);
  {
   temp=bioskey(0);

		if(temp==0x4800) { key_buff='u'; }
   else if(temp==0x5000) { key_buff='d'; }
   else if(temp==0x4B00) { key_buff='l'; }
   else if(temp==0x4D00) { key_buff='r'; }
   else                  {key_buff=(char)(temp&0x00FF);}
  }
 }

 if(mode==1)              //wait for key input
 {
  while (bioskey(1) == 0);
  key_buff = bioskey(0);
 }

 if(mode==0)              //don't wait
 {
  key_buff=0;
  if(bioskey(1)!=0)
  {
   key_buff = bioskey(0);
  }
 }
 return(key_buff);
}