A83: Re: Fades

To: <assembly-83@lists.ticalc.org>
Subject: A83: Re: Fades
From: "Harper Maddox" <jerky@ebicom.net>
Date: Mon, 22 Jun 1998 09:40:39 -0500
Delivered-To: assembly-83-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-83@lists.ticalc.org


you need to push and pop your variables
btw, you dont need to add a "d" after a number. ie 44d = just 44

-Harper Maddox

jerky@ebicom.net
IRC nick: Geori
ICQ: 1214597

-----Original Message-----
From: Mark Allen <erlkonig@mindless.com>
To: assembly-83@lists.ticalc.org <assembly-83@lists.ticalc.org>
Date: Monday, June 22, 1998 12:08 AM
Subject: A83: Fades


>
>I was trying to sort of fade from dark to light by using a loop to
>lighten the contrast, but my calc crashed and I had to remove the
>batteries.  Anyone know what I'm doing wrong?
>
> ld a,60d
>
>Fade_in:
>
> ld (curcontrast),a    ;start to change contrast
> ld a,(curcontrast)

push af

> or 0C0h
> call _LCD_BUSY
> out (LCDINSTPORT),a ;end contrast change

pop af

> dec a
> cp 44d
> jr nz,Fade_in       ;if the contrast isn't at 44 (about mid-range),
>then go back to Fade_in
>
>
>I've only been doing this for a few days now, so disregard any sloppy
>code...
>
>Thanks,
>
>Mark Allen
>

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