Re: A85: Grayscale

To: <assembly-85@lists.ticalc.org>
Subject: Re: A85: Grayscale
From: "Michael Pearce" <mgp4007@omega.uta.edu>
Date: Mon, 21 Dec 1998 04:59:55 -0600
Delivered-To: assembly-85-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-85@lists.ticalc.org



-----Original Message-----
From: CashOnly@aol.com <CashOnly@aol.com>
To: assembly-85@lists.ticalc.org <assembly-85@lists.ticalc.org>
Date: Monday, December 21, 1998 12:34 AM
Subject: Re: A85: Grayscale


>
>> How can I clear the screen with grayscale activated?
>
>call CLEARLCD       ; clear the first page.
>
>clear_page2:            ; clear the second page
> ld hl,(PAGE2ADDR)
> ld bc,1024
> call OTH_CLEAR
> ret
>
>You might want to do this to save bytes if you clear it a lot:
>
>CLEARLCD_GRAY:                         ;Usage: call &CLEARLCD_GRAY
> ld hl,(PAGE2ADDR)
> ld bc,1024
> call OTH_CLEAR
>      jp          &CLEARLCD
>


i don't think this should be a & for the jump in the last line since
CLEARLCD is an absolute addr.

-mike pearce

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