would it be ok if I asked for the answers? I'm really busy right now and I don't have time to fill it all out. It's not like I wouldn't be able to answer them on my own..just I'm busy

That is definitely cheating I am pretty sure they wouldn't be happy with that. Keep in mind, this is a promotional thing. They want to teach people how to use their calculators and the whole process works very well, actually. The main thing they want is to see if we can learn how to use their calculators and more importantly abuse their functions. They want us to think critically about tasks which is perfect for us because we are programmers-- we do this all the time.

My friend does not like me at the moment (we got in an argument), so I could not test between the 84+/SE and the 83+ (he has the 83+). Also, I am still trying to work on exchanging two different sized strings.

i have a question, how do you display the values in the fibinoci sequence like they ask you to in the questions?
also is this correct:
an=-1n+3
ive never done these before

I don't know if telling you would be considered cheating

I wonder if we could get them to sponsor some contests?

I just modified the source a bit and I just now made a program that exchanges Ans with the other calculator if it is a string o.o I used a few spots of assembly, but it works I am going to see if there is some way to make it terminate after receiving a certain byte ...

On another note, I tested this twice earlier by sending 255 bytes 100 times and the checksum worked every time (this was between TI-84+ and TI-84+SE)

Or can it be "To whom are you speaking?"
Anyways, I forgot to give you some !

I often like to use it to return whether a function was successful or not. For example, the c flag here means the pixel was in bounds, so its location was computed normally:

GetPixelLoc:
;Input:
;     b is X
;     c is y
;Output:
;     HL points to byte
;     A is the mask
;     nc if not computed, c if computed
       ld a,c
       cp 64 \ ret nc
       ld a,b
       cp 96 \ ret nc
       ld l,c
       ld h,0
       ld b,h
       add hl,hl
       add hl,bc
       add hl,hl
       add hl,hl
       ld b,a
       rrca \ rrca \ rrca
       and 0Fh
       ld c,a
       ld a,b
       ld b,0
       add hl,bc
       ld bc,(BufPtr)
       add hl,bc
       and 7
       ld b,a
       inc b
       ld a,1
         rrca
         djnz $-1
       scf
       ret
Sometimes I need to correct an addition or subtraction by also adding or subtracting one:

OP1NameLength:
;Returns the name length in HL
        ld hl,8478h
NameLength:
        xor a \ ld b,a \ ld c,a
        cpir
        ld h,a \ ld l,a
        scf \ sbc hl,bc
        ret
 (There is a better version of that)
Also, sometimes there are some very specific adjustments. In this case, you will see scf is used only when the end of the file is met, so an extra 1 must be subtracted to get the line length:

SearchLine:
;Inputs:
;     HL points to the start
;     BC is the number of bytes to search
;     DE is the line number
;     A is the line byte
;Outputs:
;     A is not changed
;     BC is the number of bytes left for the search
;     DE points to the line
;     HL is the length of the line
;===============================================================
     dec de \ inc d \ inc e
     or a
     ld (TempWord1),hl
SearchLoop:
     cpir                       ;21X-5
     jp po,EndSearchLoop+1
     dec e \ jr nz,SearchLoop-3
     dec d \ jr nz,SearchLoop-3
EndSearchLoop:
     scf
     ld de,(TempWord1)
     sbc hl,de
     ret