Topic: All Output Types Configurable (Read 727 times)

spillage · « **Reply #47 on:** January 29, 2004, 04:33:00 AM »

I have had permission from Neoya (X2VGA) to publish photos that have been distorted by a mosaic filter. The message more or less suggests, by my way of reading, that I will be f**ked if I show decent photos. Their product is the best out there so I guess they want it to stay that way. I asked guys because I would be easy pickings else.

Big HDD · « **Reply #48 on:** January 29, 2004, 11:57:00 AM »

So since you have permission to post the pics, does that mean that the tut is gonna be here as soon as u filter that stuff???
also, is there gonna be a normal tut on how to make a vga-out for a Sync-On-Green monitor, no x2vga or lm1881 splitter required(i cant afford an x2vga, and cant buy a lm1881 on the net, and cant find it in stores!)?
b/c im gonna buy a SOG monitor if that info is available in the tut....thanks!

spillage · « **Reply #49 on:** January 29, 2004, 01:22:00 PM »

PLEASE NOTE THAT UNDERTAKING THE BACK PANEL MOD MY WAY INVOLVES REMOVING THE AVIP FROM THE MOBO.

EvilWays · « **Reply #50 on:** January 29, 2004, 02:05:00 PM »

spillage, could you leave a section open in your tut for tapping H and V sync signals off of the encoder chip? I have the parts necessary to do this on order (centers around a 74HC14 Schmitt Trigger chip), and will attempt to document and photo the setup. I know the pinout for the Connexant chip, but I'll need to get my hands on an Xbox with a Focus chip to see if the pinout is the same or what pins would need to be used. This could be used as an alternative to the LM1881 for those concerned about getting a "pure" H and V sync signal.

I ordered enough parts to do 10 jobs (or less if I screw up).

spillage · « **Reply #51 on:** January 31, 2004, 03:47:00 PM »

I would suggest there may well be achance the Focus encoder is the same or similar in pin outs to the Conexant thus saving Billy Boy the trouble of having a new or revised mobo made. Be interesting to see what you have found out.

EvilWays · « **Reply #52 on:** February 01, 2004, 12:26:00 PM »

spillage · « **Reply #53 on:** February 02, 2004, 12:24:00 PM »

I dont see any point in having both systems together as you only need the one. Obviously the best VGA system will be the genuine off the mobo sync mod. Anyone running the VGA bios can disable the off the mobo mod if they want sync on green and switch it back on to get H&V. The only danger with this mod, I can think of is one of soldering. The number of people that have issues with the d0 point grows daily and I believe the off the mobo mod is even more fiddly.

I think there are benefits to all the mods that result in VGA.

The LM1881 mod, works. I have done it and after much messing around got an ace image. I traced my problems down to screening or lack of. My new mod uses screen coax throughout and consequently the issues are gone. I gave my LM1881 mod to TB_88 and he reports all is well with it. Its basic, cheap and works.

The off the mobo mod is really for those who want the ultimate VGA o/p and nothing else.

The mod I am now doing integrating the X2VGA into the box provides not only faultless VGA but also the analogue audio and composite on one PCB which makes for a neater panel. You do not need a VGA bios but you do need to hack the M$ for progressive.

EvilWays · « **Reply #54 on:** February 02, 2004, 08:19:00 PM »

The most worrysome soldering point to worry about regarding tapping H/V sync 'off the mobo' is pin 40 off the Conexant chip, which is the 1.5V source needed for the 74HC14 chip. As far as I know, there's no convenient place to tap from to get 1.5V.

My reason for both systems on the same perfboard is nothing more than comparative analysis. This would allow me to see the difference of stripping off the sync signals from green versus tapping into pure H/V signals off the mobo and feeding it to a VGA connector. "Shits and giggles" really. Besides, not all monitors are the same...some might be more flexible (therefore no real need for a 74HC14 setup), while some might be anal retentive (which would probably call for the 74HC14 setup), and I'd like to offer this type of mod to my friends...this will let me see which would be better.

spillage · « **Reply #55 on:** February 03, 2004, 12:37:00 PM »

No I think you're right EW. People need good first hand comparisons and in doing what you are planning you help everyone. So hats of to you dude.

Just renewed my subscription to Widescreen Review so the hunt for a kick ass, 1080i or p native direct view, maybe RPTV CRT display starts.
With respect to a 1.5v supply, I would advise the use of an LM317.LM317 data sheetIt will supply 1.5v with good stability. Check out the data sheet.

spillage · « **Reply #56 on:** February 04, 2004, 01:27:00 PM »

An X2VGA is currently the most respected YUV to VGA convertor. You could steal one but you would need to travel to another country, find the X2VGA factory, break in and return unharmed. $77.00 inc shipping worldwide approx.

YUV to VGA adaptor

With no plug inserted into to the AVIP the video encoder is helpless.

To save me uploading the chart of pins out checkout L33 tut here.

L33 tut

EvilWays · « **Reply #57 on:** February 04, 2004, 01:30:00 PM »

Bad news is that it costs £30,000 according to the only site I found with a price on it.

I'd like to find a via that's tied to pin 40 of the Conexant chip...or see if there's already a regulator "upstream" that's supplying it the 1.5V.

spillage · « **Reply #58 on:** February 04, 2004, 01:34:00 PM »

EvilWays · « **Reply #59 on:** February 05, 2004, 10:15:00 AM »

Author Topic: All Output Types Configurable (Read 727 times)