I'm trying to make an asteroids game, but I keep running into wierd errors, can anyone help.  Basically what should happen is this: as you move around it will give you acceleration and you slow down gradually, but when you move to the left, it starts freaking out.  I threw in a test so that when it triggers the "Too far left" code, it inverts the screen.  The problem is, you move too far left every time you move left at all.  Here's my code.  I'm using the latest axe as well.
:.B
:[18183C3C3C000000020F1E0E0400000000001C1F1F1C0000000000040E1E0F02→Pic1
:[0000003C3C3C1818000000207078F040000038F8F838000040F0787020000000
:[0000001818000000→Pic2
:[0000183C3C180000
:0→X→Y
:0→T→S
:Pic1→D
:0→B
:Repeat getKey(15)
:If getKey(2)
:6→B
:End
:If getKey(3)
:2→B
:End
:If getKey(4)
:0→B
:End
:If getKey(1)
:4→B
:End
:If getKey(4) and getKey(2)
:7→B
:End
:If getKey(2) and getKey(1)
:5→B
:End
:If getKey(3) and getKey(4)
:1→B
:End
:If getKey(3) and getKey(1)
:3→B
:End
:If getKey(54)
:S+(getKey(3)-getKey(2)*2)→S
:T+(getKey(1)-getKey(4)*2)→T
:End
:Pt-Off(X/256,Y/256,B*8+Pic1
:If getKey(54)
:If (B=1) or (B=3) or (B=5) or (B=7)
:Pt-On(X/256,Y/256,Pic2
:Else
:Pt-On(X/256,Y/256,Pic2+8
:End
:End
:S/2+X→X
:T/2+Y→Y
:If S
:If S<<0
:S+1→S
:Else
:S-1→S
:End
:End
:If T
:If T<<0
:T+1→T
:Else
:T-1→T
:End
:End
:If X<<0
:DrawInv
:X+22528→X
:End
:If X>>22528
:X-22528→X
:End
:If Y<<0
:Y+14336→Y
:End
:If Y>>14336
:Y-14336→Y
:End
:
:DispGraph
:End
:Return:Lbl AA:For(A,0,1):For(B,0,1):Pt-Change(8*B+X,8*A+Y,2*A+B*8+D):End:End

then they won't get touched, the first If S line makes sure it is not zero the same with If T

because I deflate S and T by 1 each time, that way it can get faster and faster the longer you hold the buttons, and then die down later.  I could fix that another way, I might do that later

Oh!  thank you!  yes, that was the bug, I completly forgot about the signed division routine.

Sorry to hear you won't be working on it again anymore

yeah I understand