relocating code from 0x00 to 0x100 for PIC18F877A bootloader

[Dave MacCallum]

Hi,
I am using PCM compiler version 3.145 , with PIC16F877A and bootloader AN851b from the microchip website.

I need to relocate my application code to outwith the boot region ( 0x00 – 0xff ) which I wish to protect.

I am having problems using
#org 0x0000,0x0ff
void bootloader() {
#asm
nop
#endasm
} // Reserve space for the bootloader
The compiler will not let me do this, giving error 126 : Invalid ORG range.

I found the following code on the web for a PIC18F bootloader
#build(reset=0x100)
#build(interrupt=0x104)
#org 0x0000,0x0ff
void bootloader() {
#asm
nop
#endasm
} // Reserve space for the bootloader
This code allows me to reserve 0x00 to 0xff but gives me:
0x100: nop
0x101: MOVLW 00 --------- if this was MOVLW 08 it would work,
0x102: MOWVF 0A
0x103: GOTO MAIN ( or equivalent address )
Questions:
1) any ideas for relocating code, any workarounds that I can use to relocate my code , which will give me the long jump as required
2) any info on this #build directive
Best Regards,
David
___________________________
This message was ported from CCS's old forum
Original Post ID: 12574

[PCM programmer]

:=Hi,
:= I am using PCM compiler version 3.145 , with PIC16F877A and bootloader AN851b from the microchip website.
:=
:= I need to relocate my application code to outwith the boot region ( 0x00 – 0xff ) which I wish to protect.
:=
:= I am having problems using
:=#org 0x0000,0x0ff
:=void bootloader() {
:=#asm
:=nop
:=#endasm
:=} // Reserve space for the bootloader
------------------------------------------------------------
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___________________________
This message was ported from CCS's old forum
Original Post ID: 12578