Character Eater - Terminate but Stay Resident (TSR) Source Code in C

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Home » C Home » Terminate but Stay Resident (TSR) Home » Character Eater

A D V E R T I S E M E N T

Title	Character Eater
Author	Harshvir Singh Sidhu
Author Email	hvssidhu [at] yahoo.com
Description	This TSR program hooks itself with timer interrupt and selects a random row and coloums position at each run and writes space at that position, the person using the computer feels that something is eating up the characters from the screen.
Category	C » Terminate but Stay Resident (TSR)
Hits	383749
Code	Select and Copy the Code
#include"dos.h" #include<conio.h> #include<stdlib.h> void interrupt (prevtimer)(); void interrupt mytimer(); void writechar(char ch,int row,int col,int attr); char far scr; int a,b; void main() { scr=(char far) 0xb8000000; prevtimer=getvect(8); setvect(8,mytimer); keep(0,1000); } void interrupt mytimer() { a=random(25); b=random(80); writechar(' ',a,b,0); (prevtimer)(); } void writechar(char ch,int row,int col,int attr) { (scr+row160+col2)=ch; (scr+row160+col2+1)=attr; }

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