Hi,

I am looking for a code snippet to relocate the start vectors in CCS =
compiled code.

I have a device that works as follows...

The Bootloader is programmed into the device using say MPLAB and =
PICSTART
PLUS programmer.
The bootloader uses the jump vector at location 0x000 to 0x003. It also =
puts
the actual bootloading code into the last 256 bytes of memory.

Upon power up, the code is directed to the bootloader code automatically =
and
waits for a few hundred ms. If no upload request is received, the =
bootloader
passes control back to the user code which will reside at address above
0x003.

The hardware is provided by bit-bashed serial port using a bit in port =
RB
and one in RC. (Just 2 IO lines used).

In Hi-Tech C, the compiler sets code to start at location labelled =
"START",
we add the following code snippet to relocate this vector.

#asm
 psect powerup, class=3DCODE, delta=3D2
 global powerup, start
 powerup:
 org 0x3
 goto start
#endasm


Best Regards

David Huisman
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