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About mutterminder

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  1. I don't mix mine, I just run the original Atari sound to the left channel and the Atarivox to the right channel.
  2. I had missed that your were selling these, but I guess I picked the right time to check out the forum. I ordered up some, and I'll see if I can fix a couple of my older Atari Joysticks. I usually use the XJ500, but sometimes I want to rest the joystick on a flat surface and you can really do that with XJ500.
  3. Disassemble it and clean everything well. How to the controller ports look? If you are able to clean them up and there is no significant corrosion then you need test them. It would be better if we could see a picture. If the remaining piece of RF cable is mostly good, you could put an F-Connector on it and use just about any RF cable. If it were me though I would at least do a simple composite video mod, but you'll get better results if you put in something like a UAV.
  4. The 2600 Jr was in Toy R Us and Kay Bee toys in the late 80's and early 90's with the Red Box games, which were pretty good. Towards the end they were shipping re-releases of some of their more popular titles in black and white boxes. They also had the 7800 for a while but I seem to remember that the 2600 Jr, held out for the longest.
  5. When the SGM2/Omni is ready, I'd very much be interested. I'd also like a pair of those new controllers. Thanks for keeping up the good fight.
  6. I got mine first one in Price Club or Sam's Club in the early 90's. I had previously had an 800XL in the early 80's however, by the time I saw the XEGS, I was a firmly entrenched Atari ST user. However the XEGS package was attractively priced and made me nostalgic for my old Atari so I picked one up. However, since it didn't have a tape deck, or a floppy disk drive, and those were not commonly available at the time, it turned out to be more of a novelty, as all I could get were the re-release cartridges. Some of these were at Toys R Us, but it didn't seem a good investment for my gaming dollars, with my Atari ST and my Sega Genesis having much better games. I think I ended up scratching my 8-bit itch at the time by running an Atari 800 emulator on the ST.
  7. Okay, I loaded a saved program in to Audacity and found there were two tones peaking at approximately 792Hz and 1576Hz. It look like they are using pulses or squarewaves, as there are a lot of odd harmonics and IM. I was even able to find the SV-328 User Manual, however this proved to be unhelpful in regards to tape save data format. There is a Spectravideo website which has a wealth of useful information that is well organized: http://www.samdal.com/svsoftware.htm This, as well as several other websites, refer to another website: http://home.student.uu.se/jowi4905/svi/ which contains programs to convert Spectravideo .cas files to .wav and visa versa. Unfortunately, this website does not appear to exist anymore. However, using the Internet Archive Wayback Machine, I was able access the files that were once posted on the above website. But it couldn't be that easy as these files do not work from Windows 10, even on the command line. However, I found that they will work from DOSBox so long as you include cwsdpmi.exe in the mounted directory, which is a DOS protected mode interface. The three programs that you need are SVICAS2WAV, SVIWAV2CAS, and SVICASMAN. The last one is a CAS file manager which actually runs in Windows 10. This will tell you which cassette files are CLOAD (BASIC) or BLOAD (Binary). Once the wave files were created I recorded them on to cassette using a stereo cassette deck set to a recording level between -6 and 0dB. These were successfully loaded on the SVI-904 Data Cassette. To make easier for anyone else in the same boat, the files are attached below. sc2w1_0b.zipsw2c1_0.zipscm2_02b.zipcwsdpmi.exe
  8. Since I purchased the first TRS-80 from my local Radio Shack in 1977, and used that computer until 1983, I remember that time period rather well. The main reason that the TRS-80 dominated the early micro computer market in the US in the late 70s is their massive distribution network. There was almost no where in America that didn't have a Radio Shack near by. Even if I had wanted to buy an Apple II (much more expensive than the TRS-80 entry level) or Pet 2001, there were very few dealers around in the early days. At Radio Shack, for $599, I got the TRS-80 Level I, 4K, (It wasn't called the Model I in those days since it was the only one you could buy) a black and white monitor, and a cassette deck for saving and loading programs. There were very few program cassettes in Radio Shack in those days (I think the first one I bought was Black Jack), but they did have a book on programming and the book "101 BASIC Computer Games". With these two books, I soon had a whole library of computer games in BASIC saved to tape. At the same time I taught myself to program as those 101 BASIC Computer Games were written in a different dialect of BASIC, so they all had to modified to work correctly on the TRS-80. Radio Shack and the TRS-80 soon had a commanding market share. They could have stayed the market leader, but they tried to assert too much control over their technology. In the early days they only offered official Radio Shack software in their stores. They didn't even tell people about the abundant third part software (and hardware) that was available. Much of it was only available to most people by mail order. If you read the adds in Byte and Creative Computing (and later 80 Micro) and you didn't mind mail order, you could find it. Several years later, after it was too late, they did offer third party software for sale in their stores, but by then other computers could be found in major retailers along with a good selection of software. The TRS-80 was only sold in Radio Shack. The TRS-80 Color Computer, as nice as it is in many ways, was a major mistake in my opinion. The graphics paled in comparison to the Atari 400/800, and the TI-99, even the Apple II+, the Compucolor, the Ohio Scientific Challenger 4P. Of course they were trying to sell the computer at an entry level cost, so there had to be compromises. However Commodore introduced the VIC-20 at almost the same time with a real full-stroke keyboard and much better graphics. I think they would have been better off releasing a Z-80 based Color Computer that was compatible with the Model I and III. They could have leveraged their massive software base, while releasing new software to take advantage of the new color graphics and sound.
  9. This is quite a nice collection. I've recently been looking through some of the old Pong consoles that I collected years ago that are in my garage. I've found at least 3 Odyssey 4000s. There are several assorted Atari Pongs too. I tested them all years ago, when I obtained them, but who knows how many work now. I do have an old TV that I can't test them on via RF output but I'm almost more inclined to mod them all to composite video. They've been out of circulation so long, that I'm thinking I should restore them and put them up for sale. It would be nice if the could find a home where they would be loved. What do you guys think? What should be their fate?
  10. The Spectravideo seems to have a stereo tape head. I haven't been able to find out anything about the tape format other than it's 1800baud. I would look in the SV-328 user manual, but I haven't found one of them either. I guess I'll have to load a saved program into Audacity.
  11. I just got my SVI-328 running by converting an Billion power supply. I also found my SVI-904 data cassette, and verified that it works. However I don't have any original Spectravideo software. I've found some software that will convert TSX to WAV files, but so far the SVI hasn't recognized any of them. I'm thinking that perhaps it's not recording the correct frequency, however I can't seem to find documentation on what the correct frequency is. Alternately, I found an old program called cas2wav.exe that is supposed to create Spectravideo compatible files, however it won't work in Windows 10. If anybody has any good ideas, I would appreciate it.
  12. Okay guys, I got one of these cables. I must say they are very high quality, however $25 is a bit pricey. Anyway I have a couple of Billion power supplies, which are third party after market power supplies for the Commodore 64. These are much easier to open than genuine Commodore supplies as there are just four screws holding it together. I've attached a few pictures showing the internals of this supply which just has a single sided PCB with a 5V regulator. I measured the 9VAC output at about 10.4VAC. For the 5 Volts there are a couple of rectifier diodes, and a filter cap feeding the regulator. With the rectifier diodes lifted, I read about 15.1VAC coming out of that transformer winding. The yellow and white wires are the "9VAC". The black and red wires are 5VDC. Here the red and yellow wires are on the 10.4VAC, I had to drill these holes just a bit bigger to fit the heavier gauge wires. I've lifted the rectifier diodes, unsoldered the regulator leads and bent them up, and connected the white and blue wires to the 15.1VAC here. The black shield wire is connected to ground. Notice in the last two pictures that the strain relief fits almost perfectly in this case thought I had to cut away just a little bit of plastic in the top lid to get it to fit. Here we see that it seems to work perfectly. This is the first time I've ever powered up my SVI-328. The power plug is a very tight fit in the SVI-328, and I had to use more than the normal amount of force to get it in, but it did seat all the way. We'll have to see if this is a good permanent solution. Neither the power supply or the SVI-328 seem to be overheating. I'll post here, if I run into any issues.
  13. Shouldn't it be like a Sierra On-Line shell? I don't recall any actual Sierra On-Line carts for the 2600, but it could be patterned after the Colecovision carts.
  14. I don't think it is a cassette-only game, but some cassette games play music from the audio track while the game is loading. Zeppelin is a good example. Of course there were all of the educational cassettes that depended on the audio track. However I don't believe the the .cas format supports the audio track at this time.
  15. I'm a little late to the party on this, but if it ever does get made, I would like one.
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