Since it does have a

` ``BackroundOn`

I do have a 84+CE though. Brand new. ]]>

All the given programs in the competition are for the TI-84 Plus CE, no exception. If you have a CE, you can dump the ROM off of it and use the emulator CEmu. If not, you can use the SmartView software, but I recommend CEmu because it's faster.

Note that it is illegal to download/use a ROM if you do not own the calculator for it. This is legal stuff and is like stealing a calculator, so be careful!

Good luck on the competition! :D

]]>` ``Func FnOff PlotsOff AxesOff LabelOff GridOff Radian ""→Str1 "f9dKHR/kguyS3vzFWbLW0IO6Il"→Str2 1→S 0→K BackgroundOn 12 ClrDraw ClrHome 16→Xmin 16→Xmax 10→Ymin 10→Ymax DispGraph Pt-On(0,0,1,16) For(N,0,2π,π/8) Pt-On(0.75sin(N),0.75cos(N),2,16) Pt-On(0.75sin(N+π/16),0.75cos(N+π/16),2,16) End Pt-On(.25,0.1,1,11) Pt-On(.25,0.1,2,11) StorePic 1 TextColor(20) Text(0,10," SAFE MODE... WAITING") prgmDECRYPT 0→K Text(0,155," PASSWORD?") Repeat K=52 getKey→K Pt-Change(5sin(N-π/8),5cos(N-π/8),12) Pt-On(5sin(N),5cos(N),1,20) N+π/8→N End 0→K TextColor(19) Text(0,155," PASSWORD?") Repeat K=91 getKey→K Pt-Change(5sin(N-π/8),5cos(N-π/8),12) Pt-On(5sin(N),5cos(N),1,20) N+π/8→N End 0→K TextColor(18) Text(0,155," PASSWORD?") Repeat K=61 getKey→K Pt-Change(5sin(N-π/8),5cos(N-π/8),12) Pt-On(5sin(N),5cos(N),1,20) N+π/8→N End 0→K TextColor(11) Text(0,155," PASSWORD?") Repeat K=82 getKey→K Pt-Change(5sin(N-π/8),5cos(N-π/8),12) Pt-On(5sin(N),5cos(N),1,20) N+π/8→N End TextColor(20) Text(0,155," ") N→E While N≤E+4π Pt-Change(5sin(N-π/8),5cos(N-π/8),12) Pt-On(5sin(N),5cos(N),1,20) N+π/8→N End ClrHome Disp "Warning: approaching " Disp "scheduled burn. Helium " Disp "check valve malfunction" Disp "CANNOT POST LINK ON THIS WEBSITE" Disp "" Disp "Abort burn? (Y/N) 0→K Repeat K=92 or K=71 getKey→K End If K=92 Then BackgroundOn 12 ClrDraw ClrHome ZSquare DispGraph RecallPic 1 For(N,0,2π,π/8) Pt-Change(5sin(N-π/8),5cos(N-π/8),12) Pt-On(5sin(N),5cos(N),1,20) End ClrHome ClrDraw BackgroundOn 0 TextColor(22) Text(0,15,Str2) Pause Goto 99 End If K=71 Then BackgroundOn 12 ClrDraw ClrHome ZSquare DispGraph RecallPic 1 For(N,0,4π,π/8) Pt-Change(5sin(N-π/8),5cos(N-π/8),12) Pt-On(5sin(N),5cos(N),1,20) End Pt-Off(5sin(31π/32),5cos(31π/32),1) TextColor(19) Text(2,2,"System failure...") Wait 1 ClrHome Disp "Try again" Wait 1 Goto 99 End Lbl 99 ClrDraw ""→Str1 Func AxesOn BackgroundOff ClrHome Stop`

This is the decrypt code

` ``"Decryption" DelVar L₆ DelVar L₅ DelVar L₄ "First Str2 to L4 For(A,1,length(Str2 inString("ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 θ/.:?abcdefghijklmnopqrstuvwxyz",sub(Str2,A,1→L₄(A End "Decrypting the message ""→Str0 Input ("LAUNCH DMY?: ",Str2) expr(Str2)→rand 0→N For(A,1,dim(L₄)) :L₄(A)→I :randIntNoRep(1,68,68)→L₅ :L₅(I)→L₆(A) :26-A→B :Text(145,230,toString(B)) :Pt-Change(5sin(N-π/13),5cos(N-π/13),12) :Pt-On(5sin(N),5cos(N),1,20) :N+π/13→N End "? :For(A,1,dim(L₆ :Ans+sub("ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 θ/.:?abcdefghijklmnopqrstuvwxyz",L₆(A),1) : End sub(Ans,2,length(Ans)-1→Str2 Pt-Change(5sin(N-π/13),5cos(N-π/13),12) "Clean Up Clues 0→S 0→rand DelVar L₆ DelVar L₅ DelVar L₄`