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THE BOOK of DT's INTERRUPTS is an organization of interrupt service routines and other works written by Darrel Taylor, RIP.

Interrupt routines are arranged per Darrel's original list. Darrel Taylor's Instant Interrupts are an extension of the work of Tim Box whom in October of 2002 wrote INT_CTRL.pbp

Many of the forum members felt this is a long overdue project.

THE BOOK of DT's INTERRUPTS
will be a valuable resource and a tribute to Darrel Taylor the "Fanatical Contributor".

THE BOOK of DT's INTERRUPTS is located at http://dt.picbasic.co.uk/

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  1. Re: My "Library" for ST7920 Graphical displays, works fine, but...

    Yes, the MSSP does both.
  2. Re: My "Library" for ST7920 Graphical displays, works fine, but...

    Well, that's going to make I2C operations about ten times slower than what it could be running at.

    A while back you mentioned using software SPI and complained about it being slow too.
    You'd...
  3. Re: My "Library" for ST7920 Graphical displays, works fine, but...

    If you're running at 8MHz then no wonder everything is slow.

    32MHz (or 64MHz for something like an 18F26K22) would definitely be faster, way faster.
    The I2C won't necessarily be a lot faster on...
  4. Re: My "Library" for ST7920 Graphical displays, works fine, but...

    If you're trying to write something totally generic that can be used with all the 8-bit PIC's then the most generic solution is to use the bit-banged I2C routines.

    If you want a faster method then...
  5. Re: My "Library" for ST7920 Graphical displays, works fine, but...

    In that case, if you're looking for speed then an I2C EEPROM isn't the best of choices.

    I have no idea how slow the bit-banged I2CREAD is (probably pretty slow).
    A 24C256 isn't all that slow, but...
  6. Re: My "Library" for ST7920 Graphical displays, works fine, but...

    Would 1K of EEPROM be enough for what you're doing?

    If so, switch to a pic18, like an 18F26K22. It'll be MUCH faster than trying to read from an I2C EEPROM.
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