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  1. - 31st December 2010, 21:01 #1
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    comwarrior
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    ok, that worked first time...

    So, the question is why?
    LVP is low voltage programming, allows the chip to re-program itself without being supplied with 13.6V... i believe?
    Xinst is the extended instruction set... don't know much about this other than what it's name implies...

    I've had LVP turned off befor as i was trying to find out if it was something in the config... never turned off xinst... come to think about it, their is no 'enable' option for it in PBP so, how do you use it... ??? ... ??? lol
  2. - 31st December 2010, 21:11 #2
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    Quote Originally Posted by comwarrior View Post
    ok, that worked first time...

    So, the question is why?
    LVP is low voltage programming, allows the chip to re-program itself without being supplied with 13.6V... i believe?
    Xinst is the extended instruction set... don't know much about this other than what it's name implies...

    I've had LVP turned off befor as i was trying to find out if it was something in the config... never turned off xinst... come to think about it, their is no 'enable' option for it in PBP so, how do you use it... ??? ... ??? lol
    That's great!

    LVP is something I have never used, and always seems to be a problem, so I turn it off. Of course others have better explanations. See http://www.picbasic.co.uk/forum/show...9423#post79423

    XINST is for the extended instruction list. The assembly commands above the normal 49 (or so). PBP is not capable of using the extended set (maybe some day), so we have to turn it off for PBP.

    Walter
    http://www.scalerobotics.com
  3. - 31st December 2010, 23:44 #3
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    Quote from DT
    But when LVP is enabled ... anytime RB5/PGM goes HIGH ... it's just like taking MCLR/VPP to 13V.
    If it's left floating, the PIC could be constantly entering Program Mode from input noise.
    i have a habit of letting unused pins float...
    Perhaps i should tie all pins to ground with a 100K resistor... thats a lot of resisters though...
    having said that... i have some hardware on order so that i can use ICSP and ICD so perhaps i will do it when i solder up the new sockets...
  4. - 1st January 2011, 00:15 #4
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    Perhaps i should tie all pins to ground with a 100K resistor... thats a lot of resisters though...
    No need to do that. Just make them all outputs, and you're good to go...
    Regards,

    -Bruce
    tech at rentron.com
    http://www.rentron.com
  5. - 1st January 2011, 01:07 #5
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    lol, ok, that works too...
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