C=128 80Col NTSC Color.
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From: Joseph Fenn on 18 Mar 2007 17:01 On Sun, 18 Mar 2007, Rick Balkins wrote: Well when Rick and Bryan and the others working on this project finally reach a compromised decision that really works why dont you guys market the necessary box and shame the Creators of the original C=VGA group from England who never did reach fruition with the NTSC version. They suceeded with PAL for the Europeans but never quite made it with the C128 and NTSC. So will cross my fingers and see if your efforst reach fruition. Joe (aka kilroy)
From: Mangelore on 18 Mar 2007 23:24 Not sure if it's worth marketing at the moment due to the high cost of the board. At this stage I was thinking of just documenting my experiences so that others could go ahead purchase the parts and build it themselves. Plus, I don't have access to an NTSC C128 for testing. If you guys know where I can get my hands on a cheap working NTSC C128 (without power supply) from someone in the U.S. willing to ship to Australia please let me know. I don't care about the cosmetic condition (yellowed plastic etc), as long as the C128 works. Now, it's time to see how this board handles the video output from an Amiga... Joseph Fenn wrote: > > On Sun, 18 Mar 2007, Rick Balkins wrote: > Well when Rick and Bryan and the others working on this project finally > reach a compromised decision that really works why dont you guys > market the necessary box and shame the Creators of the original > C=VGA group from England who never did reach fruition with the > NTSC version. They suceeded with PAL for the Europeans but never > quite made it with the C128 and NTSC. So will cross my fingers > and see if your efforst reach fruition. > Joe (aka kilroy) >
From: Mangelore on 19 Mar 2007 05:45 Thanks bud, That's what I thought but the title of the thread made me think otherwise. Anyway, I managed to also hook up an Amiga 500. Initial results look great. I'll be updating the following thread with more test results, screen shot links, etc.... http://landover.no-ip.com/128/viewtopic.php?id=453 Cheers Fotios bud wrote: > > AFAIK, CGA/RGBI is universal, neither PAL nor NTSC. >
From: Rick Balkins on 19 Mar 2007 09:33 Well, if you had a second one of those converters and wire it up. Then send it to someone in the US to test it. Then perhaps that'll work! As for the Amiga, it has both digital and analog RGB lines. So, if you want the analog RGB, you plug the Amiga's analog RGB lines directly to pin 43,48,53 of the AD9985. Maybe inline a resistor or diode. But basically direct. You basically want to plug directly as possible. This device was actually designed more suited for an Amiga or VGA/SVGA PC then a Commodore 128 or CGA PC. That is the difference. The device is primarily designed to convert Analog RGB to digital signal. Whereas, when plugging a C128 to it, you had to first convert the RGBI to analog RGB just to go back to digital again but not in standard RGBI configuration but for flat-panel monitors or projectors. In modern term, the C128/CGA is already a 'digitized' video. "Mangelore" <fotios(a)commodore128.org> wrote in message news:aonLh.13140$8U4.2845(a)news-server.bigpond.net.au... > Not sure if it's worth marketing at the moment due to the high cost of the > board. At this stage I was thinking of just documenting my experiences so > that others could go ahead purchase the parts and build it themselves. > Plus, I don't have access to an NTSC C128 for testing. If you guys know > where I can get my hands on a cheap working NTSC C128 (without power > supply) from someone in the U.S. willing to ship to Australia please let > me know. I don't care about the cosmetic condition (yellowed plastic etc), > as long as the C128 works. Now, it's time to see how this board handles > the video output from an Amiga... > > > > Joseph Fenn wrote: >> >> On Sun, 18 Mar 2007, Rick Balkins wrote: >> Well when Rick and Bryan and the others working on this project finally >> reach a compromised decision that really works why dont you guys >> market the necessary box and shame the Creators of the original >> C=VGA group from England who never did reach fruition with the >> NTSC version. They suceeded with PAL for the Europeans but never >> quite made it with the C128 and NTSC. So will cross my fingers >> and see if your efforst reach fruition. >> Joe (aka kilroy) >>
From: Mangelore on 19 Mar 2007 15:54
Rick Balkins wrote: > Well, if you had a second one of those converters and wire it up. Then send > it to someone in the US to test it. Then perhaps that'll work! > That's not a bad idea. I'll need someone who has a C128 and Amiga. > As for the Amiga, it has both digital and analog RGB lines. So, if you want > the analog RGB, you plug the Amiga's analog RGB lines directly to pin > 43,48,53 of the AD9985. Maybe inline a resistor or diode. But basically > direct. You basically want to plug directly as possible. This device was > actually designed more suited for an Amiga or VGA/SVGA PC then a Commodore > 128 or CGA PC. > I got the Amiga working with it yesterday. I connected the analog (not digital) outputs to the board. The range of colours were limited when using the digital ones. Anyway, as per the AD chip datasheet, the board includes a small analog input circuit that terminates and couples the inputs. I hooked the Amiga video output to the input of that circuit. It only includes a small inductor, capacitor and resistor. It's all good! |