I think the name pretty much says it all, but what I'd like to do is this: create a loop that would set every character on the screen (80 x 25) to, say, a space (20 hex). Here is the code to set a single character (bottom right character becomes a $):
mov ax,B800 ; address of video memory
mov byte[0F9E],24 ;put the $ character on the bottom right of the screen (the last character).
Since I'm not very proficient with assembly I'm not too sure how I would go about looping this so that every 2nd byte is filled with a 20h.
Thanks for the help,