[A83] Re: Writing equations to Y1 (in Ion)
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[A83] Re: Writing equations to Y1 (in Ion)
Just a small optimization. All TIOS vars, except programs, can be looked up by _findSym. So calling that instead of _chkFindSym is slightly faster. Further more, there's an rst for _findSym: rst 10h
> ----------------------------------------
> From: Emir Sakic <saka@hotmail.com>
> Sent: Sat Sep 22 03:19:23 GMT+02:00 2001
> To: <assembly-83@lists.ticalc.org>
> Subject: [A83] Re: Writing equations to Y1 (in Ion)
>
>
>
>
> ld hl,__equname
> rst 20h ;copy to OP1
> bcall(_CHKFINDSYM)
> bcallnc(_delvar) ;delete if exists
> ld hl,3 ;size of equation in bytes
> bcall(_CREATEEQU)
> inc de
> inc de ;de -> data storage
> ld hl,__equation
> ld bc,3
> ldir ;copy equation
>
> ret
>
> __equname: .db $03,tVarEqu,tY1,0,0 ;change name here
> __equation: .db tX,tAdd,t1 ;"X+1"
>
> ..end
> END
>
> >
> >How do you write equations to Y1(2,3,etc) using Ion?
> >
> >Jim
> >
>
>
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