China DOS Union

/************************************************/
/* Example program for communicating with the keyboard through the 8042 chip */
/* Author: xy_god */
/************************************************/
#include "dos.h"
#include "stdio.h"
#include "conio.h"

int iCode=0;
int blKey=0;
void interrupt ( *oldhandler)(void);/*interrupt handler function pointer*/

void interrupt handler(void);
int getbit(char c,int i);
void getkeystate();

int main(void)/***********************main function***********************/
{
int a;
oldhandler = getvect(0X09);/*get the original keyboard interrupt address*/
setvect(0X09, handler);/*install the new keyboard interrupt*/
getkeystate();
printf("*********************************************\n";
while (1)
{
if(blKey==1)
{
blKey=0;
printf("%X",iCode);
printf("****";
getkeystate();
}
}
setvect(0X09, oldhandler);/*restore the keyboard interrupt*/
return 0;
}/*****************************************************************/

void interrupt handler(void)/*keyboard interrupt handler*/
{
blKey=1;
iCode=inport(0x60);
oldhandler();
}
int getbit(char c,int i)/*get the value of bit i of the byte*/
{
int mi;
mi=c<127)
return 1;
else
return 0;
}

void getkeystate()/*get keyboard status*/
{
int i,ic=0,bitvalue;
for(ic=0;ic<8;ic++)
{
i=inport(0x64);
bitvalue=getbit(i,ic);
switch(ic)
{
case 0:
if(bitvalue) printf("OBF=TRUE\n"; else printf("OBF=FALSE\n";
break;
case 1:
if(bitvalue) printf("IBF=TRUE\n"; else printf("IBF=FALSE\n";
break;
case 2:
if(bitvalue) printf("SYS=TRUE\n"; else printf("SYS=FALSE\n";
break;
case 3:
if(bitvalue) printf("A2=TRUE\n"; else printf("A2=FALSE\n";
break;
case 4:
if(bitvalue) printf("INTH=TRUE\n"; else printf("INH=FALSE\n";
break;
case 5:
if(bitvalue) printf("TxTO=TRUE\n"; else printf("TxTO=FALSE\n";
break;
case 6:
if(bitvalue) printf("RxTO=TRUE\n"; else printf("RxTO=FALSE\n";
break;
case 7:
if(bitvalue) printf("PERR=TRUE\n"; else printf("PERR=FALSE\n";
break;
}
}
}

This program was written with TC2.0, and the development environment is Wu Jin's WIN-TC172, hehe!
Originally it was very readable, but for some reason after posting it to the forum it got messed up, so just make do with it!
Actually, if everyone looks carefully, this program's structure is very similar to developing WINDOWS programs with the SDK. Using it, you can implement multithreading in DOS programs. Note, I said multithreading, not multitasking, hehe!
This is a program for an 8042 PS2 keyboard. After I finish reading the material about the mouse, I'll write a mouse driver for everyone.
But right now I'm really busy and have no time to write it, so you'll have to wait a while. Really helpless! TMD!

Come on, the poster above, I wrote it with TC20. What CONSOLE program? It's a pure DOS program, okay!
Did you even read it carefully? Good heavens!
I'm imitating the program structure of the WIN32 SDK!

I once used this structure to write a DOS graphical system,
defined lots of message structures, pretty interesting too,
implemented multithreading, but you have to handle and initialize a lot of interrupts!
It's completely message-based. I hope someone gets inspired by this and develops a function library, so that later when developing DOS
programs there will be a graphical standard, and the program framework will be unified too!

>I once used this structure to write a DOS graphical system
Post it and let us have a look.