word.c

在C环境下文字显示的原来

#include<io.h>
#include<stdio.h>
#include<dos.h>
#include<string.h>
#include<math.h>
#include<stdio.h>
#include<bios.h>
#include<mem.h>
#include<fcntl.h>
#include<stdlib.h>
#include<conio.h>
#include<process.h>

#define SCREEN_WIDTH 320
#define SCREEN_HEIGHT 200

#define VGA256 0x13
#define TEXT_MODE 0x03

#define CHAR_HEIGHT 8
#define CHAR_WIDTH 8

unsigned char far *video_buffer=(char far *)0xA0000000L;
unsigned char far *rom_char_set=(char far *)0xF000FA6EL;

void Blit_Char(int xc,int yc,char c,int color,int trans_flag)
{
int offset,x,y;
char far *work_char;
unsigned char bit_mask=0x80;
work_char=rom_char_set+c*CHAR_HEIGHT;
offset=(yc<<8)+(yc<<6)+xc;
for(y=0;y<CHAR_HEIGHT;y++)
{
bit_mask=0x80;
for(x=0;x<CHAR_WIDTH;x++)
{
if((*work_char&bit_mask))
video_buffer[offset+x]=color;
else if(!trans_flag)
video_buffer[offset+x]=0;
bit_mask=(bit_mask>>1);
}
offset+=SCREEN_WIDTH;
work_char++;
}
}

void Blit_String(int x,int y,int color,char *string,int trans_flag)
{
int index;
for(index=0;string[index]!=0;index++)
{
Blit_Char(x+(index<<3),y,string[index],color,trans_flag);
}
}

void Set_Video_Mode(int mode)
{
	union REGS inregs,outregs;
	inregs.h.ah=0;
	inregs.h.al=(unsigned char)mode;
	int86(0x10,&inregs,&outregs);
}

void main(void)
{
	Set_Video_Mode(VGA256);
	Blit_String(100,100,YELLOW,"GAME OVER!!!",1);
	getch();
	Set_Video_Mode(TEXT_MODE);
}