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rdhays82604

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Posts posted by rdhays82604

  4. Posted · Edited by rdhays82604

    when i run it i got the following error message

     

    'Directdraw does not support the graphics display mode. Try running with ".blt" or "width640" on the command line'

     

    What i want to know is how do i get it to work

     

    I assume you are using the emulator from sourceforge.net - atari800.exe?

    You need to create a batch file to include the command line options.

     

    drive:/path to emulator/atari800 -blt

    or

    drive:/path to emulator/atari800 -width 640

     

    if the batch file is in the same folder as the emulator then you can eliminate the drive and path names and just use:

     

    atari800 -blt or -width 640

     

    to start the emulator using a specified disk like an atr file use-

     

    drive:/path to emulator/atari800 -blt "drive:/path to file/filename.ext"

    or

    drive:/path to emulator/atari800 -width 640 "drive:/path to file/filename.ext"

     

    Again eliminating the drive and path names to the emulator if the batch file is in the same folder as the emulator.

    hope this helps!

  6. Posted · Edited by rdhays82604

    Before I proceed any further, some questions:

     

    1. I'm using 74HC series IC's (that's all they had). Are they OK?

     

    2. Is the output from D7XX (pin 9 of U2) active low?

     

    3. For the audio output itself: I assume the output from each resistor array then just goes through individual 100nF capacitors? And, the ground for the audio can just be common to that which the ICs use?

     

     

    1. The HC stands for High Speed CMOS. Function for function and pin for pin they are the same.

    2. Yes, all DXXX lines are active low.

    3. Yes, I assume the same.

  9. Posted

    In reguard to the rights, being that Atari was absorbed buy JTS in 1996 and later sold to Hasbro in 1998, maby we need to contact Hasbro too.

     

    Hasbro has nothing to do with it any more. See my previous post.

     

    They did release all rights to the public domain for the Jaguar in 1999.

     

    They also released all the schematics to ANTIC, GTIA, and POKEY in to the public domain.

     

     

     

    I have been looking all over the 'net for those. Do you know where they can be found?

    I have read that they were on atarimuseum but there are no active links under the 8-bit computer on the archives page. Only links to the game consoles.

  12. Posted · Edited by rdhays82604

    OK, I know there are people who have played around with a 65816 cpu (latest being 65c816s), but one issue is the Ataris' slow video IC chip speed that always needs to be addressed. One solution was run the cpu at a perfect multiple of 1.79 mhz. The other was to create a new IC on a FPGA chip to duplicate the Atari IC functions and may even add more to the original IC function. We can probably build a chip or board that would be independent from the rest of the computer.

     

    I know the subject of customizing or duplicating the original Atari 8-bit IC chips was bought up a few times, (Turbo 816 thread, custom IC thread, Videoboard XE thread). However, has anyone ever got their hands on the original IC schematics? I will do some checking around with a few American companies that may have a connection with the Atari technology, like AtariMax or Best Electronics.

     

    If you wanted to reverse engineer the Antic/GTIA video chipset, and then add more functions, this would be a good start. I do think the Videoboard XE builders also might have such knowledge. Some people are working ideals of making a more powerful and faster computer or CPU upgrade that is directly backward compatible with the Atari XL/XE computer system. One thing people are looking for is information and why I am posting something here.

     

    I don't know the details, but someone was supposedly working on putting "the Atari on an FPGA." He had supposedly made some progress. Perhaps someone is aware of some more details?

    -Larry

     

    I found this page...

    http://www.x-game.se/projects/fpga.htm

    Is this the one you were referring to?

  13. Posted

    Just visited the Wester Design Center page and they now list 200MHz rather than 400MHz and it's for 65c02S parts... the 65c816S is listed at 100MHz.

     

    I was sure they had 400MHz listed just a few weeks back but I could be wrong. Then again at one time they mentioned another upgrade to that CPU line and all mention of it disappeared one day right before it was supposed to become available. I don't know if it was canceled, someone bought an exclusive license, it wasn't ready or what happened.

     

     

    Those speeds are in the ASIC and FPGA forms only. The chip forms are at still at 14 MHZ.

  17. Posted

    I'm in the process of writing a music application for the 800 and I want to know if anyone know of any kind of guide or reference on how to prepare and put files on the eprom so they will boot properly on the system. I've got a couple of socketed 16k eprom carts and a willem clone burner. I've searched the archives but mostly have only found stuff regarding burning existing roms or dumping roms. Also looking for a good basic compiler if anyone has recommendations. Thanks for your help!

     

    Bob

    Try turbo basic or advan basic.

    Not sure of any others.

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