[A83] Re: Getting a value from a data table
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[A83] Re: Getting a value from a data table
.db makes the compiler reserve 1 byte for data
.dw makes the compiler reserve 2 bytes (1 word) for data
> -----Oorspronkelijk bericht-----
> Van: assembly-83-bounce@lists.ticalc.org
> [mailto:assembly-83-bounce@lists.ticalc.org]Namens TypeR unknown
> Verzonden: Wednesday, January 23, 2002 18:03
> Aan: assembly-83@lists.ticalc.org
> Onderwerp: [A83] Re: Getting a value from a data table
>
>
>
> About data tables; what's the exact difference between .db and .dw ?
>
>
> >From: Peter-Martijn Kuipers <hyper@hbyte.net>
> >Reply-To: assembly-83@lists.ticalc.org
> >To: assembly-83@lists.ticalc.org
> >Subject: [A83] Re: Getting a value from a data table
> >Date: Tue, 22 Jan 2002 09:18:22 +0100 (CET)
> >
> >
> > > >
> > > >Personally i'd go for
> > > >ld de, datatable + (4*5) +3 ; start table + ((4)* row length [to
> >select
> > > 4rth
> > > >column]) + 3
> > > >
> > > >this assumes 0,0 is the origin, not 1,1
> > > >
> > > >> so de is now 13, which was at 4,3 in the data table
> > > >>
> >
> > > That simply loads the memory address of datatable+(4*5)+3
> into de, and
> >that
> > > isn't even the byte of the table that he wants to find. Try this:
> > >
> > > ld a,(datatable+(3*5)+2) ;a=byte (4-1),(3-1) or 3, 2
> >
> >Ofcourse...
> >I thought he wanted the mem address in de to ld from himself
> >
> >
> > > - - Joe
> > >
> > >
> > > --------------------------------
> > > Joe Pemberton
> > > http://tiworld.calc.org
> > > --------------------------------
> > >
> > >
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