XeO3: Internet development to the rescue!!

Well, TNT to the rescue! He spotted the problem and its not working a treat. Heres the final function, and you can see how all suggestions have been added and sped things up.

        ;
        ; Y = rotation index
        ; Temp+16 = pointer to the raw sprite info with an 
        ;           8 byte cache index table
        ;
        lda  (Temp+16),y       
        tay                    
        ldx  Cache_Next-1,y    
        beq  Skip_MoveToEnd
        lda  Cache_Prev-1,y    
        sta  Cache_Prev-1,x    
   
        bne  !We_are_Not_First     ; STA above does not change flags
        stx  FirstCache            ; X still holds Cache_Next-1
        beq  !SkipNotFirst
 
!We_are_Not_First:
        tax                        ; NOW get prev
        lda  Cache_Next-1,y
        sta  Cache_Next-1,x  
        lda  #0                    ; Only need to clear here
 
!SkipNotFirst:
        sta  Cache_Next-1,y
        lax  LastCache
        sta  Cache_Prev-1,y        ; *BUG HERE* -1 added.
        tya
        sta  Cache_Next-1,x     
        sta  LastCache          
Skip_MoveToEnd:  

And there you go! Beleive it or not, this tiny bit of code is the whole reason XeO3 got started!! I wrote the whole sprite routine to try THIS big of code out! Stupid really... but there ya go!

Many thanks guys!