Re: connecting a commodore 8032 motherboard to modern screen

IIRC, you need to invert the h-sync signal and the video signal as well 
to display on composite. There is a jumper somewhere on the 8032 board 
that will allow you to invert h-sync but I used a CRTC register to 
invert the video signal.

I know I've done it on an 8032 to a cheapo LCD composite with one of Mat 
D'Asaro's boards, the jumper on the board, plus a kernal to invert the 
video-on signal and set the timing somewhere close to PAL.

cheers,

Rob



On 17/08/2016 15:58, Steve Gray wrote:
> The 8032's video output is at 20kHz which is not very standard. 
> Luckily you can modify the CRTC registers and play with the timing. 
> The best option is to change it to ~15kHz to match NTSC or PAL timing. 
> At that point you can use a simple one-chip circuit to generate 
> composite video ($2). You could also build something like my ColourPET 
> circuit to generate RGBI or RGB analog for a Commodore 108x Monitor, 
> or to a SCART TV (not all), or to a GBS82xx converter (video scaler) 
>  ($25) to get VGA, or to a SCART to HDMI adapter (video scaler) ($30).
>
> It's been on my to-do list for a long time to try the GBS adapter (I 
> have one) and the SCART to HDMI (also have one). Someone else here 
> successfully connected the PET to a GBS adapter. It's just a matter of 
> tweeking the timing and the signal voltages.
>
> Steve
>
>
> ------------------------------------------------------------------------
> *From:* Didier Derny <didier@aida.org>
> *To:* cbm-hackers@musoftware.de
> *Sent:* Wednesday, August 17, 2016 7:40 AM
> *Subject:* connecting a commodore 8032 motherboard to modern screen
>
> Hi
>
> any idea on how I can connect a commodore 8032 motherboard to a modern
> screen ?
>
> thanks
>
> --
> didier
>
>
>
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>
>



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