Re: Commodore 8296GD

From: Steve Gray <sjgray_at_rogers.com>
Date: Thu, 4 Oct 2012 13:15:21 -0700 (PDT)
Message-ID: <1349381721.53752.YahooMailNeo@web161301.mail.bf1.yahoo.com>
Hi,
 
Thanks for testing! That's good to hear that the basic extensions/tokens are the same. Of course, I only had the 512 x 256 pixel version at the time when I did that. I now have a 512x512 version as well.
One of the neat things about the HSG board is the ability to re-define the screen co-ordinate system, so theoretically the software should work on either if written properly.
Ya, since there is NO access to the display ram, the image viewer is EXTREMELY slow. If you look at the code there's like 3 commands to draw each pixel. It does take about 20 minutes for the complete screen.
Sadly there is no pixel PLOT or PSET command. I didn't spend a lot of time on the Etch-a-sketch ;-)
 
I tried disassembling the ROM to see if there was a way to access the memory somehow but couldn't find anything, although I never completely understood the code (not enough time).
 
Steve


>________________________________
> From: Michał Pleban <lists@michau.name>
>To: cbm-hackers@musoftware.de 
>Sent: Thursday, October 4, 2012 2:21:41 PM
>Subject: Re: Commodore 8296GD
>  
>Hello!
>
>Steve Gray wrote:
>
>> Perhaps you can try some of the demos I typed in and confirm if they
>> work or not on the HRE board!
>
>I tried the demos from your disk. Generally they work, with some caveats:
>
>* Image displayer is extremely slow (estimated 20 minutes to draw an
>image - I gave up after 20% of the screen).
>* Demo #3 expects 512x512 screen so the text "Commodore" is not visible.
>* Etch a sketch hung on me when I tried the "Circle" option, needed a reset.
>
>Regards,
>Michau.
>
>
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>
>
>   

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Received on 2012-10-04 21:00:06

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