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sjt

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About sjt

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  1. Thanks for the converter.dsk I will check it soon! I saw mention of it in an old post, but was not able to find it in the archive
  2. Looking for the disks sent to TI user groups after they pulled the plug. It came with a letter. I found the letter in the archive, just haven't been able to find the software. Anyone out there have it?
  3. Over the years there have been different versions of dumped Cartridge files out there. There are Bin files, Gram Kracker type files, Cartridge software converted to run out of win994a TICART files. Is there a utility out there to convert from one type to another? For example, a ROM dump in Bin format can not be loaded by a Pgram card. But a Pgram card can dump a rom based cartridge and reload it. You can't take a Gram Kracker rom cartridge file and copy it to >6000 in a supercart and expect it to work. Obviously some files can not be crossed to another format, like a grom cartridge gram kracker file to an 8k bin rom file
  4. Looking for a arcade Marble Madness board for a system 1 Non working is ok
  5. sjt

    Mikel Labs

    I still haven't found out much about Mikel Labs. I did find that the owners name is Tom Mikel. But I can't find any further info on him or the company he started. I now have a rs232 stand alone unit he made.
  6. http://www.99er.net/99erbbs/showthread.php?tid=88
  7. Sarcasm, Tursi I've been out of this for a while, (a few years) sorry I'm not familiar with AVR cartridge cards created to simulate groms. I'm only familiar with eprom, supercarts and multicarts along with Gazoo created adaptations to run on them Obviously you Do know better than I, since my assumption is you wrote the software that allows this grom emulation board to function.... Please explain further for those of us not around while this development was made. Would a single Ubergrom cartridge work with others in a widget? or not.
  8. Anyone familiar with the products produced by Mikel Labs for the 99/4a. There was a RS232 stand alone and maybe a expansion system?
  9. Tursi would be the authority on a UberGrom card and how it might react in a cartridge expander. Maybe he can explain why it wouldn't work.
  10. As Ksarul says ...just use 47K or resistors in series or parallel to get close.....
  11. Enjoy!, have fun. To help you, here are the details on how Navarone made the widget. They used a 3 position double contact switch. They switched the following lines: One side of the switch, connected Rom Low to each of the different sockets 1-3 The other side of the switch, connected -5v to sockets 1-3 at the same time. All pin 19 (Vdd +5) were connected to each socket through a 50K resistor. All remaining pins are daisy chained to each socket. The reset button connects GND to Vdd -5 The board I'm attaching a photo of was made sometime around 1984 or later in Hong Kong. Parts list. 3- Leader EG-2540-36 Sockets 3- 50K resistors 1- Plastic button with carbonized insert (reset button) 1- Plastic slide sw with 2 seperate contacts Misc: top and bottom covers, pcb, screws That's all there is to it.
  12. You want to use a temperature controlled soldering station. There are many out there. Some digital some not. The tips are important too. Some irons like weller wtcp irons, the temperature is controlled by the tip you install. Tips are sold in different end styles and sizes depending on what you are working on. Normally 700 deg is a good general one for soldering. Conical shape is common. Obviously a tip to work on a smd device would be different as compared to a tip to work on a tube radio. Using anything less than the above is best left for wood burning projects. And yes enough heat for the solder to flow smoothly to both metals, and that's all. With experimenter boards it's easy to lift pads. The biggest mistake people make is trying to "paint" solder. The iron tip is at the connection point, then the solder is applied. One more thing, the best way to remove parts and preserve boards is to use a vacuum desoldering station. A solder "sucker" will work for a lot of things but try removing parts from a board with plated through holes, double sided . Old parts and old boards may benefit from flux as well Hope this helps Steve
  13. If I'm understanding what you are doing.....you want to make a push button widget? The push button part of your project is a bit of an over kill. With support circuitry it would be possible to use a single push sw to select different cartridges. Why not just make a board with daisy chained connectors and use a conventional slide switch along with a reset button. You then switch cartridges and do a reset.... this works, Naverone sold a lot of them. I think there is enough room for 4 cartridges. Not with advanced switching (4 position slide sw?)
  14. Have been away from the TI for a while but read the thread here about ti speech. It was something I always wanted to try my hand at and finally did, time consuming but fun. Attached is a 8k cartridge file. The cartridge speech data was created with Qbox. It will run on win994a once it's turned into a cartridge file. It can be burned to a eprom or loaded into a supercart. Steve spchdemo.bin
  15. As you've found, no it does not alter the produced data. Unfortunately it doesn't work, I have only used it to get an idea of how i might alter the original sound file to produce a more pleasing result by pre-processing the audio file . I take the produced data and drop it into either an assy program or convert it to a merge format for xbasic to test what it will sound like on the actual hardware. But it is time consuming. Win99 will produce speech, most of the time...there is some sort of timing issue, but can produce a good representation. On the hardware it will be slightly different in volume and speed (faster)
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