Re: A83: Questions about ASM83

To: assembly-83@lists.ticalc.org
Subject: Re: A83: Questions about ASM83
From: Jeremy <jedrake@linknet.kitsap.lib.wa.us>
Date: Mon, 18 Sep 2000 23:50:17 -0700 (PDT)
In-Reply-To: <004501c021e0$86077340$0481fea9@matthew>
Reply-To: assembly-83@lists.ticalc.org

clrLCDFull -- clears the display ignoring any split screen settings
clrscrnfull -- clears the screen entirely ignoring split screen settings.
If textshadow is in use, clears it also.
clrgrbuf -- clears the graph buffer only, NOT the LCD.  The LCD on the
TI-83 is not memory mapped, therefore the buffer is different from the
LCD.

Jeremy

On Tue, 19 Sep 2000, Matthew wrote:

> Hi everybody!
> 
> I've just started to learn ASM (finally got sick of basic) and obviously will have a number of questions to ask over the next month or so.  Here's the first couple:
> 
> 1.  I displayed some text on the homescreen and I made the top line inverted (set textInverse, (iy+textflags)).  After writing the inverted line I reset the flag.  Everything looks fine until I call pgmio_exec.  When I do that the top line gets reset to normal (uninverted) text.  I did some experimenting and noticed that pgmio_exec will invert or uninvert the whole screen depending on the state of the textInverse flag.  How do I stop this from happening?
> 
> 2.  What are the differences between:  call_clrLCDFull, call_clrscrnfull, call_grbufclr.
> 
> Thank you in advance to anybody who answers my questions.
> 
> Matthew
> 
> 
>

References:

A83: Questions about ASM83

From: "Matthew" <matt84@primus.com.au>