Need to know how to use TI-OS user variables in 83/84 Plus Asm.

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September 15th, 2009, 07:03 PM

PT376

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Need to know how to use TI-OS user variables in 83/84 Plus Asm.

My question is: How do I use the value from the TI-OS user variables(A - Z, Theta) in an assembly program? This is the code I have so far. I am attempting to get the value from the TI-OS variable D and display it, but it consistently displays 0, no matter what D is.

Code:

.NOLIST
 #include "ti83plus.inc"
 #include "mirage.inc"
.LIST

.org $9D93
 .db $BB, $6D
 B_CALL(_ClrLCDFull)
 LD HL, VarD
 B_CALL(_Mov9ToOP1)
 B_CALL(_ConvOP1)
 EX DE, HL
 B_CALL(_DispHL)
 ret

VarD:
 .DB RealObj, tD, $00, $00

.end
END

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September 15th, 2009, 07:34 PM

archnaid

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I'm not greatly experienced in such languages, but that appears to be a source file and not an ASM binary. What are you using to compile this?

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September 15th, 2009, 07:45 PM

PT376

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Quote:

Originally Posted by archnaid

I'm not greatly experienced in such languages, but that appears to be a source file and not an ASM binary. What are you using to compile this?

It is the source file and i'm using the TASM Assembler Version 3.2.

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September 17th, 2009, 06:12 AM

archnaid

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I've done some brief looking, but the only thing I've seen is references to an area of memory that stores system variables. No info on how to access it.

My guess would be that this sort of thing would be best done by a ROM call?

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September 17th, 2009, 12:28 PM

PT376

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I used to be better at assembly for the TI-83/84 +, but I stopped doing it for a while. I had this working before, but I deleted all my source code for all my programs and forget how to do this.

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