[A86] Re: Fraction ROM Calls
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[A86] Re: Fraction ROM Calls
Hmm damn it's been a long time since I did anything with OPs. That code
should work pretty good if you just changed it to look for 'A' and cleaned
up the 83 code. I believe the call would be copy10toOP1 (I don't remember
any different byte size copying). I'm not sure if there is a dispOP2 call or
not but if there isn't then just use the copyOP1toOP2 call and display it
with OP1 again.
> Hrm...What are the input and output of _tofrac?
> In other words how do I use it?
>
>
> What I have here doesnt do anything really...
>
> I'm trying to look up the real variable A
> and then do >frac on it and have the numerator in op1
> and the denomiator in op2 like you say _toFrac does.
>
>
>
> The code is for the 83plus but is similar to the 86.
> ---------------------------------------------------------
> #include "ti83plus.inc"
> .plugin asm83p.dll ;for cz80 (jonah cohen's z80 compiler)
> #DEFINE TI83P
> #include "ion.inc"
> #ifdef TI83P
> .org progstart-2
> .db $BB,$6D
> #else
> .org progstart
> #endif
>
> START:
>
> bcall(_homeup)
> bcall(_ClrScrn)
>
> ld hl,Avar
> rst 20h
> rst 10h
> ret c
> ex de,hl
>
> bcall(_Mov9ToOP1)
> bcall(_ToFrac)
> bcall(_dispOP1a)
>
> ret
>
> Avar:
> .db 0,tA
>
> .end
> -------------------------------------------------------------------
>
>
>
>
> Ricky Cobb
> http://tip.ti-programmers.com/
> arcadesdude@intercom.net
> [IM]
> icq 41440378
> msn arcadesdude
> y! arcadesdude
> aim arcadesdude
>
>
>
>
> 6/21/02 12:21:01 PM, Xavier LaRue <paxl@videotron.ca> wrote:
>
> >
> >Hi,
> >If you use _toFrac . The numerator will be stored into op1 and the
denomiator
> into op2.. This work perfectly on the 83+.. But I don't know if that the
same on
> the 86 :)
> >
> >Hope that help,
> >Xavier LaRue
> >
> >On Fri, 21 Jun 2002 11:11:21 -0400
> >Ricky Cobb <arcadesdude@intercom.net> wrote:
> >
> >>
> >> If there are any expireinced ASM programmers left here
> >> on this mostly dry mailing list (I know you're there)
> >> then I have two questions.
> >>
> >> I am looking for documentation (and if possible an example)
> >> of two TI-86 ROM Calls. The two ROM calls are:
> >>
> >> _tofrac equ 4B93h ; convert op1 to op1/op2
> >> _FRAC equ 549Ch ; op1 = frac(op1)
> >>
> >> The comments arenot very descriptive and I would like to know
> >> how to use these two ROM calls.
> >>
> >> Input is going to be a fp decimal number
> >> Output I'd like to be op1 as a string that reads
> >> numerator/denomiator (if reducable to a fraction)
> >> or an op as the denomiator and another op as the
> >> numerator.
> >>
> >> The most I could get was the numerator (but couldnt get
> >> the denomiator or didnt know what the output of each of
> >> these routines is.
> >>
> >> Any help would be appreciated.
> >>
> >> (See Also:
http://www.ti-programmers.com/ubb/ultimatebb.php?ubb=get_topic;f=
> >> 10;t=000103 )
> >>
> >>
> >> Ricky Cobb
> >> http://tip.ti-programmers.com/
> >> arcadesdude@intercom.net
> >> [IM]
> >> icq 41440378
> >> msn arcadesdude
> >> y! arcadesdude
> >> aim arcadesdude
> >>
> >>
> >>
> >
> >
>
>
>
>
>
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