I guess all would have figured out im new to microcontrollers and programming.
I just typed this long message and BOOM my network crashed...I couldnt post it.(how frustrating)
Anyways....I've written separate functions for all characters to be printed....
say for A
A()
{
/***
the list of pins in the required order to be fired
****/
}
so on for all charaters...( I have about a hundred)

In my main...I get into an infinite loop and call all these functions one by one...
My original idea was to get out of the loop and the end of the line(based on time) and then after my paper feed and setting reference get back into the loop.
I'v dropped that now.

while(1)
{
A();
B();
.
.
.
.
goes on till hundred.
}

Couting characters is getting very difficult..I need to check after every character...the code is getting too long..

I was wondering if there is a shorter way to it?

cnt=0;
while(1)
{
A();
cnt++
if(cnt==max)
{
/****
pf(); //paper feed function
ref(); //set reference for next line
****/
}

B();
if(cnt==max)
{
/****
pf(); //paper feed function
ref(); //set reference for next line
****/
}

....
goes on a hundred..
}

doesnt this get too long.

I was thinking if i include my pf() and ref() in my ISR would it be possible ?

void time(void) interrupt 3
{
pf();
ref();
}

This way i thought it would get much simpler..
Can i do this?
I've heard people say that ISRs should be as short as possible..
The pf() takes about 20ms.

I know my questions would have annoyed a lot of you...(i told you im new to this)
I am really gratefull to each and everyone of you..(you people have been really helpfull)
Thank you
-rahul