C=128 80Col NTSC Color.
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From: Payton Byrd on 19 Mar 2007 16:21 "Mangelore" <fotios(a)commodore128.org> wrote in message news:mUBLh.13423$8U4.3673(a)news-server.bigpond.net.au... > Rick Balkins wrote: >> Well, if you had a second one of those converters and wire it up. Then send >> it to someone in the US to test it. Then perhaps that'll work! >> > > That's not a bad idea. I'll need someone who has a C128 and Amiga. I'm you're man! I got several NTSC 128's and a PAL Amiga that runs here in the states on a NTSC power supply. I can test both PAL and NTSC analog modes for you as I use both. > >> As for the Amiga, it has both digital and analog RGB lines. So, if you want >> the analog RGB, you plug the Amiga's analog RGB lines directly to pin >> 43,48,53 of the AD9985. Maybe inline a resistor or diode. But basically >> direct. You basically want to plug directly as possible. This device was >> actually designed more suited for an Amiga or VGA/SVGA PC then a Commodore >> 128 or CGA PC. >> > > I got the Amiga working with it yesterday. I connected the analog (not > digital) outputs to the board. The range of colours were limited when > using the digital ones. > > Anyway, as per the AD chip datasheet, the board includes a small analog > input circuit that terminates and couples the inputs. I hooked the Amiga > video output to the input of that circuit. It only includes a small > inductor, capacitor and resistor. > > It's all good!
From: Rick Balkins on 21 Mar 2007 02:10 I too have a C128DCR (metal case C-128D) and several C128 flats and a few Amiga comps (A1200 specifically) but money is limited at the moment but Payton is good. "Payton Byrd" <plbyrd(a)bellsouth.no.spam.net> wrote in message news:lhCLh.19279$Wc.1486(a)bignews3.bellsouth.net... "Mangelore" <fotios(a)commodore128.org> wrote in message news:mUBLh.13423$8U4.3673(a)news-server.bigpond.net.au... > 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. I'm you're man! I got several NTSC 128's and a PAL Amiga that runs here in the states on a NTSC power supply. I can test both PAL and NTSC analog modes for you as I use both. > >> 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!
From: Brian Ketterling on 21 Mar 2007 02:27 "Joseph Fenn" <jfenn(a)lava.net> wrote in message news:Pine.BSI.4.64.0703200844590.9569(a)malasada.lava.net > On Tue, 20 Mar 2007, Brian Ketterling wrote: > >> Joe's Great White Whale was supposed to accept both >> 40 column (NTSC or PAL) and 80 column Commodore video and convert either >> to VGA. I think they also wanted to accomodate the video of other >> "classic" computers. > > Yep your Exactly right Brian! Except you forgot about the part > about "they suceeded in makeing the device for PAL useage, but never > could conquer the problem with NTSC displays (for the C128 mode) > that is. Well, I didn't forget the NTSC problem, but I was referring to their intent. I guess you could substitute "intended" for "supposed" in my sentence above. I wasn't following Commodore news for a while, and I guess I missed the point when the C=VGA project spun to a stop. Are you saying that 40 column NTSC worked when it was coming from 64's and 128's in 64 mode, but not when it was coming from 128's in 128 mode? That seems implausible (I hope VIC-II-generated video doesn't have a secret embedded signal to tell the monitor what mode the computer is in ;-)! ). Brian --
From: Brian Ketterling on 21 Mar 2007 02:33 "Rick Balkins" <nospam.rickbalkins(a)nospam.wavestarinteractive.com> wrote in message news:B84Mh.370$vV3.154(a)newsfe02.lga > ...I am addressing Mangelore's part and appeared to > have provided an interesting input that seems to actually help. That is > suprising in itself. Buck up, Rick -- your technical inputs are sure to find their mark now and then :) . Personally, though, I wouldn't mind a "for-dummies" synopsis of Mangelore's project. Brian --
From: Mangelore on 21 Mar 2007 05:14
Payton Byrd wrote: > "Mangelore" <fotios(a)commodore128.org> wrote in message news:mUBLh.13423$8U4.3673(a)news-server.bigpond.net.au... >> 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. > > I'm you're man! I got several NTSC 128's and a PAL Amiga that runs here in the states on a NTSC power supply. I can test both PAL and NTSC analog modes for you as I use both. > Thanks Payton, I've sent you an e-mail with further details. Cheers Fotios |