[Coco] SAVEMing CoCo 3 Hi-res screens

[jdaggett at gate.net]

Diego

First off I think SAVEM will not save high resolution graphics screens. Instead you 
will have to write a routine to store and retrieve them yourself. 

The Default HI Res Graphics Screen starts at $60000 and goes to $$67FFF or 
corresponds to blocks MMU $30 to $33 in the memory map. That is the bottom of 
ram in a 128K system. 

Depending on High res mode that is being employed all or part of that 32K is used. 
To save what is in that region will require the knowledge of what mode that the 
screen was written as. The save routine would also have to encode that resoultion 
mode into the file for the restoring routine. 

james




On 19 Feb 2005 at 23:41, Diego Barizo wrote:

Date sent:      	Sat, 19 Feb 2005 23:41:42 -0500
From:           	Diego Barizo <diegoba at adinet.com.uy>
To:             	CoCoList for Color Computer Enthusiasts 
<coco at maltedmedia.com>
Subject:        	[Coco] SAVEMing CoCo 3 Hi-res screens
Send reply to:  	CoCoList for Color Computer Enthusiasts 
<coco at maltedmedia.com>
	<mailto:coco-
request at maltedmedia.com?subject=unsubscribe>
	<mailto:coco-
request at maltedmedia.com?subject=subscribe>

> Talking about Hi-res graphics...
> How can I SAVEM a HSCREEN?
> I can't find the memory address. I guess it's a virtual one?
> 
> Diego
> 
> Robert Gault wrote:
> 
> > If you want a graphics on screen while drawing off screen, you will
> > need to write code in assembly. However, you may be able to pre draw
> > all needed graphics, save them to disk, and load them into memory
> > when your program runs. Again this will take a thorough knowledge of
> > the Coco and some assembly language.
> >
> >
> Assembly? No other way?
> 
> 
> -- 
> Coco mailing list
> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco