> I have a customer who will be using Hitech C on a project, and I will
> be writing a bootloader so they can load the compiled .hex files into
> the product in production.

> Any pointers on how to go about doing this (if possible) would be
> appreciated

Maybe I'm missing something here or you haven't seen the bootloader
from HiTech. They provide source for both the PIC part and the PC
end. The bootloader puts its own vector (?) in the first 3 locations
and relocates what you send down as being at address 0,1 & 2. When
the bootloader wants to run the application it jumps to the relocated
instructions which ljmp to the rest of your code.

You compile your application with a -ICD option and the top 256 bytes
are protected.

Take what they have provided and hack it around to suit your needs.

Steve.
======================================================
Steve Baldwin                Electronic Product Design
TLA Microsystems Ltd         Microcontroller Specialists
PO Box 15-680, New Lynn      http://www.tla.co.nz
Auckland, New Zealand        ph  +64 9 820-2221
email: steveb@tla.co.nz      fax +64 9 820-1929
======================================================

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