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  1.    #1  
    A few months ago I posted a question to those who write software to see if they could come up with a hack or something to enable 16-bit greyscale on the Visor.

    It's been said the Visor hardware has the capability but software has to be written to take advantage of it like AlbumToGo does.

    Has anyone been able to do this? Is anyone attempting or interested in doing this? Can it be done?
  2. #2  
    It is possible, but more work than most people are interested in. It would just be easier to wait for the new visors to come out with Palm OS 3.5 in them.
    No handheld computers were harmed in the creation of this message.
  3. MPM
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    #3  
    I'm convinced that Handspring could easily release a patch to upgrade the OS to at least 3.3. That's all you would need to get 16 grays.

    Anyone at Handspring listening to the large number of people that want this?
  4.    #4  
    Doesn't OS 3.1 support 16-bit? Please correct me if I am wrong. I thought the Palm III, IIIx, IIIxe, etc did 16-bit greyscale.

    originally posted by CompuPika:
    It would just be easier to wait for the new visors to come out with Palm OS 3.5 in them.
    And pay $300 to get 16-bit greyscale?! I don't think so. I don't have the kind of money that allows me to buy a new piece of hardware when it has the functionality I want.
  5. #5  
    First off, I think you guys mean 4-bit/ 16 shades.
    4-Bit native support was added to PalmOS v3.3
  6. #6  
    Swendor,

    The Visor can do 16 shade greyscale. The best viewer I've come across is: "fireviewer".

    It works quite well, and it's freeware.

    The associated converter is called "fireConverter". It's available as shareware, and worth the $19.95 registration fee.

    You can find them here: http://www.firepad.com/

    Dave
  7.    #7  
    sdavida:

    I appreciate the info but what I'm asking is if it can be done independent of a program like a hack or something running in the background.
  8. #8  
    Not sure what you mean by a hack running in the background. Having never programmed for PalmOS, here is my understanding.

    The Visor hardward is capable of displaying 16 shades. However, the operating system (PalmOS 3.1) does not have native support for this mode (it was added in 3.3). Therefore, applications that write directly to the hardware are capable of displaying 16 shades.
    Applications that use the API routines for display output can not.

    [Edited by bregent on 10-19-2000 at 12:38 AM]
  9. #9  
    I think i know what he's getting at - palmOS 3.3 does have API routines to support 16 shades right?

    could there be some kind of hack to allow applications using those routines to work on our visors?

    btw, are there many applications that really use 16 shades?
    Mongooses rock
  10. #10  
    I'm not a Palm OS expert by any means, but I once saw a program called Argon V. (By the way, 4 shade drains the battery a bit quicker than usual, but with 16 shade, mine went from 80% to the warning voltage on ni-cds in less than 15 minutes on-time.) Argon V, if you don't mind changing batteries often, uses 16-shade code (and is GPL'd).

    You can get it here: http://www.ibr.cs.tu-bs.de/~harbaum/pilot/argonv.html

    The Palm Emulator complains that the program is accessing a non-locked memory area or something like that, but will still work (it thinks it's a bug--not a workaround ).



    Hope this helps with whatever you're writing (mind telling us?).


    _______________
    Tim
    http://vbq1.tripod.com/myvisor.jpg

    [Edited by thatch on 10-19-2000 at 06:25 PM]
  11.    #11  
    Yes, chow chow, that's exactly what I'm getting at. A hack or something that will allow one to turn 16 level greyscale at will just the same way one can turn on and off NoStreakHack.

    and, thatcher, sorry, I'm not working on anything. I haven't the slightest idea about how to program for PalmOS. Perhaps in the future I will try. Now how do I get my hands on that development kit and emulator?
  12. #12  
    swendor,

    The Handspring Developers' Kit (which contains the Palm OS Emulator (POSE) and the Palm Debugger (PDB)) can be obtained at http://www.handspring.com/developers/, then click in Getting Started to begin.

    The Palm DevKit(if you want it -- I think it has a newer version of the Emulator) is available at http://www.palmos.com/dev/. The CygWin shell is nice, but not required if you're only using the debugger/emulator. It is only required for the command-line tools like the compiler (if you're on Windows).


    _______________
    Tim
    http://vbq1.tripod.com/myvisor.jpg
  13. #13  
    OK, while it's probably technically possible, I doubt a hack like this will be released for a dwindling PalmOS 3.1 market.

    First of all, it could only work for applications that were written to display in 4-bit. There is no reasonble way for a hack to turn a 2-bit application into a 4-bit with good results.

    For 4-bit applications, the hack would first have to fool the application into thinking the OS was a version with native 4-bit support.

    Then the hack would have to be a device driver; intercept OS calls from the application and translate them into direct hardware routines.

    It sounds like a lot of work and would currently only benefit a few applications that really shine in 4-bit mode, like graphical applications and some games that don't already write directly to the hardware.

    Originally posted by swendor
    Yes, chow chow, that's exactly what I'm getting at. A hack or something that will allow one to turn 16 level greyscale at will just the same way one can turn on and off NoStreakHack.

    and, thatcher, sorry, I'm not working on anything. I haven't the slightest idea about how to program for PalmOS. Perhaps in the future I will try. Now how do I get my hands on that development kit and emulator?
  14. #14  
    16 color grayscale isn't much to get excited about, at least not on these low quality screens. Download the game and you'll see what I mean.
    Rev. Peter da Silva, ULC<br>
    <a href=http://www.taronga.com/~peter/>Ar rug tú barróg ar do mhactíre inniu?</a>

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