UperGrafx PC Engine 720p DVI Widget

[Duo_R]

That looks like the same project box i used for my RGB box. Just painted black. The underside matches up almost exact (cant see it here).

[Keith Courage]

Sounds like it just has a built in scart RGB upscaler in the box. This device I use can go from 720-1080 with my pc engine. http://www.ebay.com/itm/Scart-to-HDMI-Video-With-3-5mm-and-Coaxial-Audio-Converter-Box-1080P-Upscaler-/391441849877?hash=item5b23c09e15:g:XnQAAOSwAuNW4O9G Also has the very minor shutter every 5-6 seconds if the game is scrolling very fast without any pause anywhere.

[Duo_R]

Yeah I use the same one.

[dshadoff]

Sounds like it just has a built in scart RGB upscaler in the box. This device I use can go from 720-1080 with my pc engine. http://www.ebay.com/itm/Scart-to-HDMI-Video-With-3-5mm-and-Coaxial-Audio-Converter-Box-1080P-Upscaler-/391441849877?hash=item5b23c09e15:g:XnQAAOSwAuNW4O9G Also has the very minor shutter every 5-6 seconds if the game is scrolling very fast without any pause anywhere.

I'm pretty sure SCART is still based on the analogue output of the PC Engine.

The upergrafx uses only the digital signals, bypasses the RGB ADCs, and stores the digital values into a frame buffer, and re-synthesizes the output to the different scanning format based on the framebuffer in digital format.

[SignOfZeta]

That would be a huge difference, totally.

Bit either way, it's a lot of bullshit to go through and still get frame drops. The crap you flat panel guys put up with just to avoid having a CRT is nuts.

[NightWolve]

The upergrafx uses only the digital signals, bypasses the RGB ADCs, and stores the digital values into a frame buffer, and re-synthesizes the output to the different scanning format based on the framebuffer in digital format.

Pretty cool, I didn't know about this. Would like to see him offer a guide/means towards tapping the needed digital signals out of a CD system eventually but that's interesting the signals could be tapped all along from the HuCard-only systems without physical modding/changes.

[Joe Redifer]

Does the EXT port provide the digital signals directly from the PPU?

[Johnpv]

I'm not sure about the refresh rates being different causing 1 frame drops.  Since the refresh rates wouldn't be any different.  The ATSC standard which is the HDTV standard supports multiple refresh rates, including the refresh rates from NTSC.

Does the EXT port provide the digital signals directly from the PPU?

That's a good question everything I've seen seems to point to it just sending the RGB and sync signal.  The dude at db-elec might be able to answer that question since he makes a Grafx Booster for the Turbo Grafx (and I think core grafx) that allows you to get RGB, and SVideo out, and he does so by tapping into the ext port.   

http://db-electronics.ca/product/dbgrafx-booster-ttp/

[Duo_R]

This product is simply taking RGB and then running that to a Sony CXA encoder that coverts it to S-video signal.

I'm curious what the Ubergrafx is using, video bus lines?

I'm not sure about the refresh rates being different causing 1 frame drops.  Since the refresh rates wouldn't be any different.  The ATSC standard which is the HDTV standard supports multiple refresh rates, including the refresh rates from NTSC.

Does the EXT port provide the digital signals directly from the PPU?

That's a good question everything I've seen seems to point to it just sending the RGB and sync signal.  The dude at db-elec might be able to answer that question since he makes a Grafx Booster for the Turbo Grafx (and I think core grafx) that allows you to get RGB, and SVideo out, and he does so by tapping into the ext port.   

http://db-electronics.ca/product/dbgrafx-booster-ttp/

[Bonknuts]

I'm not sure about the refresh rates being different causing 1 frame drops.  Since the refresh rates wouldn't be any different.  The ATSC standard which is the HDTV standard supports multiple refresh rates, including the refresh rates from NTSC.

Does the EXT port provide the digital signals directly from the PPU?

That's a good question everything I've seen seems to point to it just sending the RGB and sync signal.  The dude at db-elec might be able to answer that question since he makes a Grafx Booster for the Turbo Grafx (and I think core grafx) that allows you to get RGB, and SVideo out, and he does so by tapping into the ext port.   

http://db-electronics.ca/product/dbgrafx-booster-ttp/

 The PCE doesn't output 59.94hz or an even 60hz. It's 60.xx for one mode, and 59.xx for the other mode (The PCE has 262 scanline mode and 263 scanline mode, and the system doesn't adjust for this extra scanline time). So it's possible not all TVs would display the refresh rate in digital format natively, vs something like their analog inputs. A frame blend instead of the frame drop, for that single phase difference when it comes up (every so many seconds), should do the trick.

[wilykat]

Could the game be programmed to switch between mode at each field? So when it's combined on video output, it'd be true 525 lines for proper NTSC standard?  Or is switching video mode a little slow to do in the vertical banking?

[Bonknuts]

Could the game be programmed to switch between mode at each field? So when it's combined on video output, it'd be true 525 lines for proper NTSC standard?  Or is switching video mode a little slow to do in the vertical banking?

It can. And since you can generate an hsync interrupt on any scanline, which makes this easier from a timing perspective. But what's missing is the equalization pulses that identify even/odd fields - so it's not a true interlaced signal. I've tried this on some HD sets and they didn't like the signal much. SDTV sets though, never had a problem with this trick on the PCE (demo, others have done this too - Ccovell).

[Joe Redifer]

I wonder if the Framemeister would hate it. It can't stand the interlaced mode on Sonic 2 and Ys 3 on the Genesis.

[Bonknuts]

I wonder if the Framemeister would hate it. It can't stand the interlaced mode on Sonic 2 and Ys 3 on the Genesis.

Does it mess up?

[Joe Redifer]

Big time. Normal interlacing is fine, but I guess maybe the Genesis' timing isn't exactly what it needs to be for the scaler to understand.