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Main => Monitor/Video Forum => Topic started by: tekopaa on January 08, 2010, 02:25:52 am

Title: Interesting Mobo from Asrock to use with MAME TV cabinet
Post by: tekopaa on January 08, 2010, 02:25:52 am

I am working in Computer service here in Finland. Noticed couple days ago weird looking mobo this would be nice use with Component video TV it accept 480i to HD. It was on customers M-atx case

http://www.asrock.com/MB/overview.asp?Model=775Twins-HDTV (http://www.asrock.com/MB/overview.asp?Model=775Twins-HDTV)

Title: Re: Interesting Mobo from Asrock to use with MAME TV cabinet
Post by: DJ_Izumi on January 08, 2010, 05:21:44 am

So basically it's a daughter card for the onboard video chipset for the purposes of TV out and I think additional VGA port?

It's a Radeon X300 which is a Radeon 9600 in a PCI-E package, it sorta makes sense.  The chip should have all those features, it's just onboard implimentations typically don't have enough physical space to offer the ports.

Title: Re: Interesting Mobo from Asrock to use with MAME TV cabinet
Post by: tekopaa on January 25, 2010, 05:14:50 am

yeah... its like real component output from PCI-X card just its bundled with this mobo. There is separate pin connector in motherboard use with vga output and component

(http://i4.aijaa.com/b/00860/5633979.jpg) (http://www.aijaa.com/v.php?i=5633979.jpg)

mobo accept's ddr2 or ddr1 400mhz

Title: Re: Interesting Mobo from Asrock to use with MAME TV cabinet
Post by: Nataq on January 25, 2010, 04:53:38 pm

Wow if it is really what I think it is...

Let say I install a new video card on this mobo. I still use that other daughter card in conjunction with it to output to component ? So any card connected to this mobo would have component out directly ?

Am I understanding this correctly ?

I have a TV with component in my cab and most nvidia card cant do component out.

Title: Re: Interesting Mobo from Asrock to use with MAME TV cabinet
Post by: Nataq on February 01, 2010, 09:37:50 am

As I understand it, those connections will only work if using integrated video and will most probably scale all resolutions like any other dongles, adapters and what not. Not saying its not good, (component out is great) but for best (arcade) result a transcoder is king. On this mobo, 320x240 will take half screen because of the scaling of the video card. Go for a VGA to component transcoder for true arcade resolutions (that is the same as going VGA to SCART for europeen folks). So 320x240 will show full screen ans with real scanlines. It is basically treating your TV as an arcade monitor.

I saw some pretty cheap transcoder on ebay (25$ with buy it now option) :

http://cgi.ebay.com/RCA-VHDC300-COMPONENT-VGA-KIT-CHEAP_W0QQitemZ350308309071QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item519000984f (http://cgi.ebay.com/RCA-VHDC300-COMPONENT-VGA-KIT-CHEAP_W0QQitemZ350308309071QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item519000984f)

Title: Re: Interesting Mobo from Asrock to use with MAME TV cabinet
Post by: lilshawn on February 01, 2010, 03:17:06 pm

asus has a few mobos that have hd/svideo/comp out on them via a "card" and motherboard header., i've never tried them, but i got a bunch of the "cards" left over from our jukebox conversions. (not needing hd video (yet :P))