Re: A86: screen stuff

To: assembly-86@lists.ticalc.org
Subject: Re: A86: screen stuff
From: Grams Family <grams@netcarrier.com>
Date: Wed, 29 Oct 1997 05:15:25
In-Reply-To: <971029003411_27364811@mrin46.mail.aol.com>
Reply-To: assembly-86@lists.ticalc.org

At 12:34 AM 10/29/97 -0500, you wrote:

>>  have you tried a djnz loop that loads a 0 into all the graph screen
>>  addresses?
>>  
>>  
>A MUCH faster way is an LDIR, such as the following:
>
>ld hl,GRAPHMEM
>ld de,GRAPHMEM+1
>ld bc,1023
>ld hl,0000
>ldir
>
>which loads 0 into the 1st byte and then loads each byte after that with the
>contents of the previous byte, which was just zeroed out.
>
Does djnz work with bc also, or just with b?

--Joshua

References:

Re: A86: screen stuff

From: Steve86Asm@aol.com

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