Re: connecting a commodore 8032 motherboard to modern screen

That sounds like a cool project.
Why disconnect the screen ram or even the 6545 at all? Leave them connected outputting a regular signal. Install your module on the expansion bus and monitor writes to $8xxx mirroring them in the module's memory. Monitor writes to $E8xx for the CRTC controller registers (screen parameters) and the VIA for character rom selection. Generate a display completely independent of the PET video. This would be similar to how the Turbo Chameleon works on the C64.
I have a Nexys2 board if you need someone to test ;-)
Steve


      From: Didier Derny <didier@aida.org>
 To: cbm-hackers@musoftware.de 
 Sent: Thursday, August 18, 2016 3:14 AM
 Subject: Re: connecting a commodore 8032 motherboard to modern screen
   
I was also thinking to disable the chip select on the screen ram
and install a small board with a craignell or a godil reinplementing the 
screen..
I already made a vhdl to produce a screen similar to a commodore screen
producing a signal for vga  (actually run on a nexys2)

it is probably also possible to do something similar with a propeller...


On 18/08/2016 05:30, Per Olofsson wrote:
> On Wed, Aug 17, 2016, at 01:40 PM, Didier Derny wrote:
>> Hi
>>
>> any idea on how I can connect a commodore 8032 motherboard to a modern
>> screen ?
> I'm working on a project that allows mirroring of the graphics ram in
> 8/16-bit computers into a Raspberry Pi kernel buffer. It's then a
> relatively simple matter of rendering it 60 times per second and
> outputting it on the Pi's HDMI. I'm currently using it to build a
> graphics card with Amiga inspired capabilities for the C64, but an 80x25
> display like the 8032's would be much simpler. The project's paused for
> a few weeks due to me moving to the US for a bit, but I hope to continue
> in a few weeks once we get settled in. It's a work in progress and I've
> started uploading parts of it to GitHub:
>
>    https://github.com/MagerValp/fifogfx
>


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