Denny,
The readme file lists two ways to handle the bootloader with CCS as
seen below. Did you try both?

Also, I know you probably know this but there is a 16F87XA and a 16F87X
version. That has messed some people up.

In the past I had a little trouble that bootloader in an earlier
version. I went back and downloaded the version one level prior and
that fixed it for me. Then when a new version came out I downloaded
that and the problem was fixed. I basically leap-frogged the troubled
version. Here is the link to the old versions:
http://www.microchipc.com/PIC16bootload/PIC_bootloader_old_versions.htm

CCS C:
  add *only one* of the next two statements, depending on the micro:

  #ORG 0x0700,0x07FF {} //for the 2k 16F870/1/2
  #ORG 0x0F00,0x0FFF {} //for the 4k 16F873/4
  #ORG 0x1F00,0x1FFF {} //for the 8k 16F876/7

  For some versions of CCS C, use the following:

  #org 0x0700, 0x07FF void loader16F872(void) {} //for the 2k
16F870/1/2
  #org 0x0F00, 0x0FFF void loader16F874(void) {} //for the 4k 16F873/4
  #org 0x1F00, 0x1FFF void loader16F877(void) {} //for the 8k 16F876/7


--- Denny Esterline <firmware@TDS.NET> wrote:
> For the benifit of those whom don't have the original posts....
>
> Here are the details:
> CCS version 3.073
>
> The complete C source code:
> #if defined(__PCM__)
> #include <16f876.h>
> #fuses XT,NOWDT,NOPROTECT
> #use delay(clock=4000000)
> #use standard_io(B)
> #endif
>
> #org 0x1F00, 0x1FFF void loader16F876(void) {} file://as specified on
> MicrochipC - reserves the top memory for the boot loader
>
> void main()
> {
> while(1)
> {
> output_bit(PIN_B0,1);
> delay_ms(400);
> output_bit(PIN_B0,0);
> delay_ms(400);
> }
> }
> ------------------------End of source code
>
>
> The complete hex file as produced by the compiler:
> :1000000000308A00192800002230840000080319FB
> :1000100018280130F800F701F70B0C28F80B0B2813
> :100020004A30F700F70B122800000000800B092867
> :10003000003484011F30830583169F018312061448
> :100040008316061002308312A100C830A2000420DB
> :10005000A10B252806108316061002308312A1007A
> :0E006000C830A2000420A10B30281F28630026
> :083E000000108A110A120028CB
> :02400E00F93F78
> :00000001FF
> ;PIC16F876
>
> --------------- End of hex file
>
>
> ----- Original Message -----
> From: David Huisman <David@BRAMCO.COM.AU>
> To: <PICLIST@MITVMA.MIT.EDU>
> Sent: Monday, August 04, 2003 10:18 PM
> Subject: Re: [PIC]: Bootloader confusion
>
>
> Denny,
>
> I do not have copies of your original posting. What Compiler are you
> using ?
>
> You mention the issue may be relocation of your code start.
>
> I use Hi-Tech C and either add psect statement with appropriate
> relocation
> code at start of the source file to relocate the start or I use the
> compiler
> relocation switch MPLAB. Project Build Options -> Compiler set -Axxxx
> for the code start.
>
> If you READ the code from the micro when the bootloader is programmed
> into
> it,
> you should see the jump at reset vector to the bootloader and the
> bootloader
> code residing in the high memory locations.
>
> You then compile your user code with the -Axxxx and upload it to the
> micro.
> Now if you read the micro contents back, you should see the reset
> vector
> jump
> to bootloader code still there and also your user code starting at
> location
> xxx
> (as defined in the -Axxx compiler line option).
>
> Kind Regards
>
> David Huisman
>
> --
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>
> --
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=====
Chuck Hellebuyck
Electronic Products
chuck@elproducts.com
**** Home of the BasicBoard Development Platform*********
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