[TI ASM] list input through ans

[King Harold]

I've been learning asm for some time (3 days now lol)
But im learnin fast.. however, how does one store and access data that is in a list in ans? or a matrix?
is it simply storing it to a .db somewhere? (it got me assemble errors but hey im a noob..)
I'd also like to know how you read/write to/from appvars, i sort of get lost there, it didnt seem to work the same as for normal programs (maybe it does though, i think it should work the same)

[threefingeredguy]

http://education.ti.com/guidebooks/sdk/ ... utines.pdf

Look up GetLtoOP1.

[King Harold]

Ok, but where do i get the pointer?
Its in ans so like this?? ld hl,(ans)
that just isnt it..
thanx for that link anyway im sure it will help me in some way

[tr1p1ea]

In the TIOS you would do something like this:

Code: Select all

{0,1,2,3,4:Asm(prgmANSLIST

And prgmANSLIST would look like this:

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.nolist
#define end .end
#define END .end
#define equ .equ
#define EQU .equ
 
#include "ti83plus.inc"
#define ProgStart $9D95
.list
 
.org ProgStart - 2
.db t2ByteTok, tAsmCmp 
 
start_of_program:
        bcall(_RclAns)                  ; recall Ans
        ld hl,1                         ; 1st element in Real List
        bcall(_GetLtoOp1)               ; get element
        bcall(_ConvOp1)                 ; returns a as LSByte
        ld h,0
        ld l,a                          ; hl = a, the 1st list element
        bcall(_DispHL)                  ; display hl
        ret
 
.end
.END

That will display the 1st element in the list. To get the 2nd element in the list change HL before calling _GetLtoOp1, like so:

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        ld hl,2                         ; 2nd element in Real List

Hope this helps .

[King Harold]

thanx that looks like it should work
what happens if you try to get an element that isnt there though? im guessing your screen gets filled with strage chars - calc turns off - ramcleared?
or does it return 0 in OP1
or is there a "length of list in ans" function?

Edit: actually, nvm that, it returns a nice 0 and no error. But what about FP numbers?

[tr1p1ea]

Floating point numbers will be placed in Op1, however _ConvOp1 will convert the floating point number to a 16-bit integer and place it into DE (with the LSB in A as well). Of course, if the exponent is > 3 then you will either reieve and error or unexpected results.

[King Harold]

so basically it just throws the value in op1.
is that right?
edit: yes it is, problems solved