486+, i believe not, the 386 was 32 bit and could accomplish 4 byte moves easily!<br>
: : I have tried to use this method, to do animation.<p>
: : 1: Draw background to Virtual screen 2<br>
: : 2: flip Virtual screen 2 into virtual screen 1<br>
: : 3: Draw sprite to Virtual Screen 1<br>
: : 4: Flip Virtial screen 1 to VGA<br>
: : 5: Repeat from 2<p>
: : It is slow with only one sprite, and when i have about 3 sprites, it is totally useless. I have tried some other, but they are also getting slow, when i have more than 2 objects. Maybe it's just my routines that is slow, but what is the fastest way to make animation with lots of objects. <br>
: : Without destroying the background ofcourse.<p>
: : Thanks.<p>
: I've done some animations too. I dont know about<br>
: the fastest method but I did it like this:<br>
: 1) Draw Background to Vscr1<br>
: 2) Draw Objects to Vscr1<br>
: 3) Vscr1->VGA<br>
: It's quite similar. There are some optimizations<br>
: you can make however. You can make a new memcpy()<br>
: function that copies memory in 4 byte-chunks!<br>
: This works only in 486+ machines and you must <br>
: know some external assembly...<br>
: The original memcpy() uses only 1 byte transfers.<br>
: Your DrawSprite is probably too slow too...<br>
: Did u use shifts when calculating offsets?<br>
: offset=x+y*320; --> offset=x+y<<8+y<<6;<br>
: <br>
: <br>
: <p>
