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ATI R200 Documentation Coming Too

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  • phoronix
    started a topic ATI R200 Documentation Coming Too

    ATI R200 Documentation Coming Too

    Phoronix: ATI R200 Documentation Coming Too

    In the Phoronix Forums following Friday's release of the (NDA-free) ATI R300 3D register information, AMD's John Bridgman has confirmed that he is looking to release documentation going back to the ATI Radeon 8500 era graphics processors. Years ago ATI had released this R200 documentation to the open-source driver developers at the time, but it was encumbered by legal restrictions. John doesn't believe these R200 documents will be of any use to the xf86-video-ati developers for improving the Radeon 8500 to 9250 open-source support, but that it will help assist new open-source developers in beginning to understand graphics programming...

    http://www.phoronix.com/vr.php?view=NjM5NA

  • bridgman
    replied
    Yeah... sorry.

    Leave a comment:


  • kurukafa
    replied
    Originally posted by bridgman View Post
    Nope, not much change here. I guess you can call that a denial.
    Rumors... :-(

    Leave a comment:


  • bridgman
    replied
    Nope, not much change here. I guess you can call that a denial.

    Leave a comment:


  • kurukafa
    replied
    Originally posted by bridgman View Post
    Hi kurukafa; no update yet, probably next week before we get a chance to spend any time on this.

    I just want to stress that all the programming info in the doc is already included in the current open source drivers, so this will not allow any more development or bug fixing. The R200 driver was written using this documentation, and the Xorg developers probably know the R200 better than we do these days. The sole purpose for releasing the doc is as an "interesting read" for someone who is just learning about GPUs.

    The upside is that it might give a better understanding of how R200-class GPUs work, but the downside is that the understanding will be for a GPU which is now 5 generations old and which doesn't have much in common with currently shipping parts.
    Rumors are wide-spread that the documents will be released REAL soon (in the orders of days). Any denials or otherwise supportive information regarding the issue will highly be appreciated.

    Thanks.
    Last edited by kurukafa; 03-16-2009, 09:34 AM.

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  • leef
    replied
    Newegg still sells six 9250 cards. Only a year and a half ago, the r200 was the fastest 3D available for opensource linux. The r200s are generally silent (no fan) and low power.

    Leave a comment:


  • tuxdriver
    replied
    Originally Posted by bridgman

    ...assuming they can *find* an R2xx these days
    There are a lot of PCs still running (Linux) with old 9250,9200SE,9100 and 8500 cards.
    You can even buy brand new 9200SE and 9250 cards in stores in some countries (shocking!)

    They are still good enough to run Ubuntu with wobbly windows and other compositing effects
    Last edited by tuxdriver; 02-13-2009, 02:17 PM.

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  • kurukafa
    replied
    Originally posted by bridgman View Post
    Hi kurukafa; no update yet, probably next week before we get a chance to spend any time on this.

    I just want to stress that all the programming info in the doc is already included in the current open source drivers, so this will not allow any more development or bug fixing. The R200 driver was written using this documentation, and the Xorg developers probably know the R200 better than we do these days. The sole purpose for releasing the doc is as an "interesting read" for someone who is just learning about GPUs.

    The upside is that it might give a better understanding of how R200-class GPUs work, but the downside is that the understanding will be for a GPU which is now 5 generations old and which doesn't have much in common with currently shipping parts.
    Thanks for the update. I will still be waiting for the document, as it is not always fun to reverse engineer the open source driver. :-)

    Leave a comment:


  • bridgman
    replied
    Hi kurukafa; no update yet, probably next week before we get a chance to spend any time on this.

    I just want to stress that all the programming info in the doc is already included in the current open source drivers, so this will not allow any more development or bug fixing. The R200 driver was written using this documentation, and the Xorg developers probably know the R200 better than we do these days. The sole purpose for releasing the doc is as an "interesting read" for someone who is just learning about GPUs.

    The upside is that it might give a better understanding of how R200-class GPUs work, but the downside is that the understanding will be for a GPU which is now 5 generations old and which doesn't have much in common with currently shipping parts.

    Leave a comment:


  • kurukafa
    replied
    Originally posted by bridgman View Post
    When we either find an editable copy (no luck yet) or have time to scan and OCR what we have back into something we can edit and release. Rough guess is a month before we have time to start work on it, maybe another month after that. Just guessing though... I was hoping an editable file would have turned up by now.

    AFAIK everything covered by the document is already working in the R200 drivers, so there doesn't seem to be much to debug other than the usual AGP problems which we can't help with in our documents anyways -- most of the fixes really need to be in chipset drivers. Do you have an R200-based system that isn't working ?
    Hi bridgman, any updates on this issue? Are we going to be able to develop for 9200 chipset without any obligations. ;-)

    Leave a comment:

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