[A83] PLEASE HELP ME!!!Re: storing op1 to list


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[A83] PLEASE HELP ME!!!Re: storing op1 to list




Come on, somebody must know about this!!!
I'm not kidding, I'm really stuck about this!!!

>From: "TypeR unknown" <typerfuture@hotmail.com>
>Reply-To: assembly-83@lists.ticalc.org
>To: assembly-83@lists.ticalc.org
>Subject: [A83] storing op1 to list
>Date: Fri, 24 Aug 2001 19:28:31 +0200
>
>
>I have this program where in the beginning of the program two lists are
>created, named ZG1 and ZG2.
>In testing I have used the number 5 for the number of element's they both
>contain.
>
>Later in the program I have to write the number which is in op1 to a
>element in list ZG1, to do this I have used the code as given in ASMGURU
>(tut 31 I believe)
>It goes like this:
>
>    ld hl,1 ;write to element 1
>    call _adrlele ;calculate element address
>    ex de,hl  ;de->element address
>    ld hl,op1 ;hl-> number
>    ld bc,9
>    ldir   ;store to element
>
>but because there is a lot of code between creating the list and actually
>writing to it, as far as I know, I must preserve the de register because
>this contains the list element.
>
>So I have saved de with two user defined variables (not good but I think
>reliable), but the program doesn't work well, because it doesn't store the
>number!!!
>
>Should I be preserving more registers, or is the something wrong with my
>code??
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