Hello, again, hello!!
Still transporting from C code to Asm ;)
Sorry, but cannot find in TEACH YOURSELF C IN 21 DAYS an explanation to this code:
void ClearScreen()
{
WORD xpos,ypos;
for (ypos=0;ypos<Yimage;ypos+=8)
for (xpos=0;xpos<Ximage;xpos+=8)
{...