Need help with lookup table or direct calculation

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  1. - 5th October 2006, 20:49 #1
    Darrel Taylor's Avatar
    Darrel Taylor
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    Uhhh, "Much Cleaner"??

    You're kidding right??

    I have to wonder if you've actually read my previous posts.
    DT
  2. - 6th October 2006, 03:05 #2
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    Hey Darrel,

    Well I have a huge table with all my values. Great!....but i'm noticing that for some values I store in my table, the program deosn't work. Its really weird....do you think that there might be some memory addressing problems/overwriting program code with the Datatable approach?
  3. - 6th October 2006, 03:13 #3
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    Well, I wouldn't think so, but can't really say for sure.

    Can you post it, or send it to darrel at pbpgroup.com. I'm sure I can get to the bottom of it.
    <br>
    DT
  4. - 6th October 2006, 17:36 #4
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    Darrel,

    I have sent you 2 versions of the code. The e-mail explains the prob.

    Nikhil
  5. - 6th October 2006, 18:01 #5
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    Wink other solution ...

    Big Tables ???

    No pwôblem, missiou !!! Use an excel sheet creating a text file ( Retlw xx ...) and some asm ( RETLW ...) lines.

    Here are ( simple !!! ) examples

    Alain
    Attached Files Attached Files
    ************************************************** ***********************
    Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
    ************************************************** ***********************
    IF there is the word "Problem" in your question ...
    certainly the answer is " RTFM " or " RTFDataSheet " !!!
    *****************************************
  6. - 6th October 2006, 19:09 #6
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    Since the RETLW method stores 1 byte per instruction which takes 2 bytes.
    A table of 1024 words would use 4096 bytes, instead of the 2048 bytes used by the method shown here ...

    Using EXT with Labels
    http://www.picbasic.co.uk/forum/show...php?t=3891#LAB

    If you are using a 16F as the .zip example shows, then RETLW would be better because it can only store 14-bit words, but not for an 18F.
    <br>
    DT
  7. - 7th October 2006, 10:18 #7
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    Talking a thought for the programmer

    Hi,Darrel

    I think we also must consider the table loading work ... ( humour !!! )


    Alain
    ************************************************** ***********************
    Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
    ************************************************** ***********************
    IF there is the word "Problem" in your question ...
    certainly the answer is " RTFM " or " RTFDataSheet " !!!
    *****************************************
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