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NEC PC-Engine/SuperGrafx => PC Engine/SuperGrafx Discussion => Topic started by: moonwhistle on May 22, 2011, 08:56:42 AM

Title: Core Grafx 2 RGB picture
Post by: moonwhistle on May 22, 2011, 08:56:42 AM: I bought a region and RGB modded Core Grafx 2. It outputs RGB through a replacement din socket.

I thought the picture was perfect. I also have an external custom made RGB unit that plugs into the expansion slot. When I tested it I found that the picture is different, probably better. The larger sprites are noticeably less blocky / jaggy. The sound however is worse through the external unit.

Any ideas on why there is a variance in picture quality?

Thanks.
Title: Re: Core Grafx 2 RGB picture
Post by: Bonknuts on May 22, 2011, 04:50:59 PM: The RGB output form the VCE is extremely crisp. Any softening through a converter is due to filtering in the IC design. Using a slow amp and/or caps, etc. Could be frame grabbing/digitizing device that's outputting from a frame buffer. Any number of things. You would need to provide a lot more details to get any real answers.
Title: Re: Core Grafx 2 RGB picture
Post by: SignOfZeta on May 22, 2011, 07:14:54 PM: Yeah, we'd need to know exactly what you have. More importantly, we need to know what's "better" or "worse" in your opinion. A lot of people want the sharpest (ie: jaggiest) image possible from the system itself. Any softening should be done by the display.
Title: Re: Core Grafx 2 RGB picture
Post by: moonwhistle on May 23, 2011, 02:58:50 AM: Sorry for the lack of details, I'll try to take some photos of what I've got and screen shots later on.
Title: Re: Core Grafx 2 RGB picture
Post by: Alexander78 on March 22, 2012, 03:47:41 PM: Quote from: Bonknuts on May 22, 2011, 04:50:59 PM
The RGB output form the VCE is extremely crisp. Any softening through a converter is due to filtering in the IC design. Using a slow amp and/or caps, etc. Could be frame grabbing/digitizing device that's outputting from a frame buffer. Any number of things. You would need to provide a lot more details to get any real answers.

Hi,

I have the PC-Engine Core Grafx II

I would like to change the video output in RGB, I'm looking for a guide to go from "Composite Cable" to "RGB"....

I would try to make the change to the Core Grafx II. Can someone tell me a guide ??
Title: Re: Core Grafx 2 RGB picture
Post by: thesteve on March 22, 2012, 04:16:09 PM: guides are common, just search for pcengine RGB
amps are needed, and pick one.
we may soon have a professionally made amp for RGB mods (contact BlueBMW for details)
Title: Re: Core Grafx 2 RGB picture
Post by: Alexander78 on March 22, 2012, 11:14:28 PM: Hi thesteve!

is true, there are many guides generic for pc-engine .... For example, for the duo or turbo Grafx etc ....
but i can not find a specific guide for your motherboard's Core Grafx II, anyone knows one ?

anyone know where I can find it ?
Title: Re: Core Grafx 2 RGB picture
Post by: thesteve on March 23, 2012, 02:05:35 AM: you dont need a specific guide as the important points dont change
Title: Re: Core Grafx 2 RGB picture
Post by: soop on March 23, 2012, 02:09:13 AM: Here: http://www.mmmonkey.co.uk/console/pce/rgb.htm

You probably want to buy one of Blue's amps though. Trust me, it will save you a LOT of effort.
Title: Re: Core Grafx 2 RGB picture
Post by: incrediblehark on March 23, 2012, 03:29:32 AM: If you're rgb modding a coregrafx, I recommend tapping the R,B,B,Sync lines from the PC Engine's expansion connector, and you may need to swap out the 5 pin din with an 8, to keep rgb and composite and still have the system look unmodified.
Title: Re: Core Grafx 2 RGB picture
Post by: Alexander78 on March 24, 2012, 04:12:48 PM: Quote from: soop on March 23, 2012, 02:09:13 AM
Here: http://www.mmmonkey.co.uk/console/pce/rgb.htm

ok thanks I'll see what I can do with this guide