Correct about the sync. Its not the kernal, but the editor rom that needs changing for video timing. You can assemble a custom editor rom from my editor rom project available on github. Webpage: http://www.6502.org/users/sjgray/projects/editrom/ I should add an option to invert the video.... Steve > On Aug 17, 2016, at 6:11 PM, Rob Clarke <crock@clarke-family.org.uk> wrote: > > 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 >> >> >> >> Message was sent through the cbm-hackers mailing list >> >> > Message was sent through the cbm-hackers mailing listReceived on 2016-08-17 23:01:18
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