[A83] Re: Map question

To: assembly-83@lists.ticalc.org
Subject: [A83] Re: Map question
From: ComAsYuAre@aol.com
Date: Sat, 17 Mar 2001 17:37:29 EST
Reply-To: assembly-83@lists.ticalc.org

  ld h,0
  ld l,a
  add hl,hl    ;*2
  add hl,hl    ;*4
  add hl,hl    ;*8
  ld de,data
  add hl,de   ;add to level offset


In a message dated 3/17/2001 5:24:49 PM Eastern Standard Time, 
Mike3465@aol.com writes:


> Ok, i'm making a map program to use for an rpg I'm thinking about, and i was 
> wondering if i could do this:
> 
> (normal code, and then some to get the tile num(0-255) into a)
>     ld f,0
>     sla a
>     sla a
>     sla a       ;same as a=a*8;
>     add hl,af   ;or should i exchange a to f? I'm not sure, i want to add 
> the 
> offset of               ;the tile(a) to the tile data(hl) any help here?
> (normal code to display tile located at hl)
> 
> would that work? or do i need to exchange a and f to get the right code? or 
> could i just say "  add hl,a" and that work?
> 
> Any help would be....helpfull



----
Jonah Cohen
<ComAsYuAre@aol.com>
http://jonah.ticalc.org