I make extensive use of the AddBlit, Subtraction Blit, Add Rotate, Subtract Rotate functions in JEDI-SDL.. any speed increases in these would be greatly appreciated.

'm using some 386asm versions too.. from a while back. Do they still exist in JEDI-SDL?

I get fairly good performance with small sprites, but I could always use optimisations to these commonly called functions as things do slow down when there are lots of spinning particles on screen.