A83: Fades

To: "assembly-83@lists.ticalc.org" <assembly-83@lists.ticalc.org>
Subject: A83: Fades
From: Mark Allen <erlkonig@mindless.com>
Date: Mon, 22 Jun 1998 01:06:35 -0400
Delivered-To: assembly-83-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-83@lists.ticalc.org


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)
 or 0C0h
 call _LCD_BUSY
 out (LCDINSTPORT),a ;end contrast change
 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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Re: A83: Fades

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