CPUWIZ Posted January 6, 2005 Share Posted January 6, 2005 No way! That's wicked cool! SO once the data is pulled fdown from the cart, where does it go? Does it have a line that copies it to a PC or something? I hope that this isn't too remedial a question... I'm just insanely curious. Top link. http://home.arcor.de/estolberg/tools/index.html Quote Link to comment Share on other sites More sharing options...
gulag picture radio Posted January 6, 2005 Share Posted January 6, 2005 Wicked. I love this recent rennaisance of hemmoraging data out of an Atari through the joystick port. I'll just be happy to have a nice stable video out and separate audio outputs for each audio oscillator. Since I use Paul Slocum's Synthcart a lot, I want to be able to separately do stuff with the drum sounds and the lead sounds. I've tried building the "Stereo" mod in the past, but have had some problems with it. I'll just have to take another crack at it with the 7800. I'd sure feel dumb buying another CyberTech mod just to get the audio output right. Quote Link to comment Share on other sites More sharing options...
Gunstar Posted January 7, 2005 Share Posted January 7, 2005 Sorry I'm getting in on this thread kind of late guys, but I've done a 7800 S-video and audio modification to my 7800. First off, I just have to say, this is not something to be done by someone who is inexperienced, even with the various modification instructions available. These various modifications instructions are very clear in instruction and the steps to be taken. But, I attempted 3 different variations that are available online and I found every single one of them to be unsatisfactory witht he final results. Especially those that use pre-determined resisters in the circuits, maybe the choices made by the authors work fine with their set-ups and TV's or monitors, but they were all terrible with my monitors and TV. In the end, I COMBINED designs from all three "published" modification circuits and then used trial and error with some modifications of my own. In the end, I have a GREAT circuit that works great and gives an EXCELLENT picture for both my 7800 and 2600 games. The main suggestion I have to anyone attempting an A/V mod on a 7800 is to use adustable pots for the final chroma and lumina outputs, becuase it is a MUST to be able to adjust the chroma and luma to a good average for both 2600 and 7800 games and your TV or monitor. If you are not very experienced with electronics, get someone who is to do the modification for you, someone who ca, like me, be able to take "parts" of the different modification instructions and combine them into a quality modification. Some one with some experience and creativity, someone, who if they chose too, could make their own circuit from scratch. Otherwise, wait until an easy-to-install kit becomes available for the layman to install. In the end, I'm VERY happy with the circuit I made, out of the instructions given by several others and my own two-cents worth of knowledge thrown into the mix. Below is a picture of my mod. Quote Link to comment Share on other sites More sharing options...
Bruce Tomlin Posted January 7, 2005 Share Posted January 7, 2005 Out the joystick port. I used a MAX232 chip and piped it out the left joystick port at 2400 baud (I also recently wrote a debugger which was bi-directional 2400 baud through the right joystick port), and DevOS uses some kind of multi-bit protocol to a PC parallel port. Which is kinda useless for me since I almost exclusively use Macs. The hardware mod is also necessary if you want to bypass the encryption check. Quote Link to comment Share on other sites More sharing options...
S Posted January 11, 2005 Share Posted January 11, 2005 Gunstar, Could you post some details of your mod? What are your components? I'd like to give it a go with a PAL system. Thanks, Quote Link to comment Share on other sites More sharing options...
8bitdomain Posted January 12, 2005 Share Posted January 12, 2005 Here is a pic of the new 7800 mod board. It has been tested with NTSC. PAL testing will be completed when I receive my 7800 Pal motherboard. Cost will be approx $36. Production quantitys will be available the end of January through the web site www.8bitDomain.com Mike Quote Link to comment Share on other sites More sharing options...
Lost Monkey Posted January 12, 2005 Share Posted January 12, 2005 Congratulations! That looks fantastic! Quote Link to comment Share on other sites More sharing options...
S Posted January 12, 2005 Share Posted January 12, 2005 Way cool, that veeeeery niiiicccceeee!! How does it stay in place? Double sided tape? Once I had a working board going (based on the info around the 'net), I was going to drill holes on the RF shielding and put the board on the inside of the sheilding. I don't think that I'm going to get a decent result with those circuits (I've tried so many of them without success), so it looks like Mike's board from 8bitdomain could very well be a goer. (Mike, can holes be made on each of the corners of the board for this method of mounting?) Would it be a good/bad idea to mount the board on the inside of the RF shielding (nice and secure, won't come unstuck when 7800 heats up)? Quote Link to comment Share on other sites More sharing options...
8bitdomain Posted January 12, 2005 Share Posted January 12, 2005 Actually, it mounts via a 14 position machine pin header and socket, U3 on the motherboard needs to be removed and replaced with the socket. Here is a pic of the bottom of the mod board. Quote Link to comment Share on other sites More sharing options...
Rob Mitchell Posted January 12, 2005 Share Posted January 12, 2005 Looks great! I want one! Will you post the installation instructions? Rob Mitchell, Atlanta, GA Quote Link to comment Share on other sites More sharing options...
jerrykurtz Posted January 12, 2005 Share Posted January 12, 2005 The S-Video mod PCB looks very nice. Congrats on some nice work! I do have a question though. Can some POTS be added for fine tuning? Jerry Quote Link to comment Share on other sites More sharing options...
Bruce Tomlin Posted January 12, 2005 Share Posted January 12, 2005 Wow, that's sweet. Tapping through a socketed U3 was pretty smart. As for the question about installation, I suspect that it's something like: 1) desolder and socketize U3 (a significant task in itself), then put the chip in the socket (if you messed it up, you better have a spare chip handy) and make sure your 7800 still works. I sometimes mess up a trace when socketizing and have to add a jumper wire to fix things. 2) solder the 7-wire harness to various resistors on the motherboard, see diagram (not pictured). It may be a good idea to again make sure your 7800 still works at this point. 3) plug in the 7-wire and 4-wire harnesses 4) remove U3, plug the board into the U3 socket and put the U3 chip into the board 5) plug your S-video and audio connections into the plugs on the other end of the 4-wire harness (not pictured) 6) PROFIT! Quote Link to comment Share on other sites More sharing options...
Bruce Tomlin Posted January 12, 2005 Share Posted January 12, 2005 Oh, spiffy! I just noticed that U3 has been duplicated as one of the chips on the mod board itself. That's one less step to worry about. Quote Link to comment Share on other sites More sharing options...
Mot Posted January 12, 2005 Share Posted January 12, 2005 I hate to say this now, but I have a mini-van with a TV and the only inputs in there are the three RCA jacks. This leads me to say: I would like both s-view and a regular RCA jack for video. Will there be a way to hook this up to a auto RCA jack and a video RCA jack TV? Quote Link to comment Share on other sites More sharing options...
GrizzLee Posted January 12, 2005 Share Posted January 12, 2005 I must say that this looks fantastic. If it works as good as it looks, I will be "retro-fitting" all my 7800's. I will be buying at least 3 of these boards. If he can get a PAL version working. Even better!!! Regards, -Lee Quote Link to comment Share on other sites More sharing options...
128bytes Posted January 13, 2005 Share Posted January 13, 2005 I hate to say this now, but I have a mini-van with a TV and the only inputs in there are the three RCA jacks. This leads me to say: I would like both s-view and a regular RCA jack for video. Will there be a way to hook this up to a auto RCA jack and a video RCA jack TV? a ~$6 s-video to composite video adapter will do the trick quite nicely! Quote Link to comment Share on other sites More sharing options...
Mot Posted January 13, 2005 Share Posted January 13, 2005 Will there be a way to hook this up to a auto RCA jack and a video RCA jack TV? a ~$6 s-video to composite video adapter will do the trick quite nicely! Very NICE this + CC2 = | heven? Quote Link to comment Share on other sites More sharing options...
PacManPlus Posted January 13, 2005 Share Posted January 13, 2005 Hi! Bruce - I'm wondering if the 7 wire harness is for the output? I see Red, White, Yellow, and Black (I'm thinking Audio Right, Audio Left, Composite Out, and Ground) - and then Green, Purple, and Blue for component out as well (kind of like the 5200 version). I think the 4 wires are the ones that get soldered to the board... If that's the case then Mot's fine Bob Quote Link to comment Share on other sites More sharing options...
8bitdomain Posted January 13, 2005 Share Posted January 13, 2005 There are many ways to mount the output jacks, all have advantages and dis-advantages here is some pics of 1 way to do it. I hope this answers some of your questions. Mike Quote Link to comment Share on other sites More sharing options...
Rob Mitchell Posted January 13, 2005 Share Posted January 13, 2005 Looks fantastic in situ! I look forward to getting my hands on this one. Rob Mitchell, Atlanta, GA Quote Link to comment Share on other sites More sharing options...
Richard H. Posted January 13, 2005 Share Posted January 13, 2005 If he can get a PAL version working. Even better!!! I want a PAL version so bad, I've sacrificed my spare 7800 for Mike to do some testing on. I know it'll be worth it - the TV picture / sound I get at the moment is KILLING me Quote Link to comment Share on other sites More sharing options...
Justin42 Posted January 14, 2005 Share Posted January 14, 2005 Wow, that looks great! Anyone willing to do conversions for those of us 7800 owners who may not have the necessary skills/equipment to do it ourselves? (see, I'm blind from so many years of 7800 RF Video! ) (is it tacky to ask before the conversion's even out? ) Quote Link to comment Share on other sites More sharing options...
tiw Posted January 20, 2005 Share Posted January 20, 2005 I would be willing to do it for a reasonable fee. Have 30+ years in electronics and my own professional soldering/desoldering equipment. I would certainly be interested in a couple of these video mod boards for myself. Where is the signup list? Quote Link to comment Share on other sites More sharing options...
tiw Posted January 20, 2005 Share Posted January 20, 2005 Just signed up/prepaid for 2. I was wondering, the connectors are nice, but why not just hardwire the cables to the PCB? It would save the cost of the Molex connector sets. Looks like you could hand assemble the board in about 45 minutes? Of course for quantity pick and place and re-flow oven would work nicely for quantities. There is a place in Washington that will do small runs reasonably with very high quality workmanship. 8bit domain, email me if you are interested . (tiw02t @netscape.net) Quote Link to comment Share on other sites More sharing options...
PacManPlus Posted January 20, 2005 Share Posted January 20, 2005 How do you sign up or prepay for them? Quote Link to comment Share on other sites More sharing options...
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