Re: A83: Where to store a Large data structure?

To: Assembly 83 <assembly-83@lists.ticalc.org>
Subject: Re: A83: Where to store a Large data structure?
From: Richard Harper Maddox <gte172i@prism.gatech.edu>
Date: Thu, 20 Jul 2000 15:58:48 -0400 (EDT)
In-Reply-To: <005501bff272$70b273c0$189b85cd@cslater>
Reply-To: assembly-83@lists.ticalc.org

Here is the declaration to the APD_BUFFER, the most popular temporary
memory.

bigData = savesscreen

here is the routine to lookup an item.

; input: a = item, from one to fifty (can be to 255)
; output: de = 16 bit data.
getItemAt:
 ld l,a
 ld h,0
 add hl,hl
 ld de,bigData
 add hl,de

 ld e,(hl)	; big endian reverses bytes
 inc hl
 ld d,(hl)
 ret

-harper

On Thu, 20 Jul 2000, Colin Slater wrote:

> 
> Hi, Im looking for a way to store a large data structure. I need at least
> 100 bytes, and I need to be able to access anyone of them quickly. I also
> need it so I can access it in 16 bit pieces to a register pair. Any
> sugestions would be helpful.
> hehe
> 
> 
>

References:

A83: Where to store a Large data structure?

From: "Colin Slater" <cslater@wcnet.org>

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