Thanks! That's useful info. I've never dug into the lkr scripts. Here's
what Microchip put in there for config, and it seems like it's ok.

CODEPAGE   NAME=config   START=0x300000   END=0x30000D   PROTECTED


        Here's what I see during the attempted build:

Linking:
Command line: "C:\mcc18\bin\mplink.exe /o VXC-50.HEX /l C:\MCC18\LIB  /k
C:\MCC18\LKR VXC-50.O CONFIG.O U3.O U4.O U5.O U7.O U8.O U13.O PRNTBOOL.O
U14U15.O EXTSPI.O C:\MCC18\LKR\18F452.LKR "
MPLINK 2.90.05, Linker
Copyright (c) 2001 Microchip Technology Inc.
Error - Absolute code section '.config' must start at a word-aligned
address.
Errors    : 1


        If I compile for the 18c452, it seems to work ok, and the config line of
the lkr script is pretty much the same.
        Any more ideas? Meanwhile, I continue to set config by hand before
programming chips!

Thanks!

Harold


On Sat, 25 May 2002 08:22:21 -0400 Olin Lathrop
<olin_piclist@EMBEDINC.COM> writes:
> >         I've copied the config bit setting stuff right out of
> p18f452.inc
> and
> > put it in config.asm as below. During linking, I get the following
> error:
> >
> > Error - Absolute code section '.config' must start at a
> word-aligned
> > address.
>
> The __CONFIG directive produces code in a special section named
> .CONFIG.
> The Microchip docs are very sketchy about all this, but the
> assembler does
> not set an absolute address for this section.  This must be done in
> the
> linker control file.  You have to look in the data sheet for
> whatever PIC
> you are using and find where the config word is, then set up a
> .config
> linker section fixed at that address.  I haven't done a project yet
> with an
> 18 family PIC, so here is my linker control file for the 16F876 as
> an
> example:
>
> //   Linker control file for the PIC 16F876 processor.
> //
> CODEPAGE NAME=config START=0x2007  END=0x2007 //special processor
> config
> word
>
> CODEPAGE NAME=code0      START=0  END=0x7FF //code page 0
> CODEPAGE NAME=code1  START=0x800  END=0xFFF //code page 1
> CODEPAGE NAME=code2 START=0x1000 END=0x17FF //code page 2
> CODEPAGE NAME=code3 START=0x1800 END=0x1FFF //code page 3
>
> DATABANK NAME=bank0  START=0x20  END=0x6F //register bank 0
> DATABANK NAME=bank1  START=0xA0  END=0xEF //register bank 1
> DATABANK NAME=bank2 START=0x110 END=0x16F //register bank 2
> DATABANK NAME=bank3 START=0x190 END=0x1EF //register bank 3
>
> SHAREBANK NAME=globalram  START=0x70  END=0x7F PROTECTED //global
> regs, bank
> 0
> SHAREBANK NAME=globalram  START=0xF0  END=0xFF PROTECTED //global
> regs, bank
> 1
> SHAREBANK NAME=globalram START=0x170 END=0x17F PROTECTED //global
> regs, bank
> 2
> SHAREBANK NAME=globalram START=0x1F0 END=0x1FF PROTECTED //global
> regs, bank
> 3
>
> SECTION NAME=.udata_shr RAM=globalram //global memory mapped to all
> register
> banks
> SECTION NAME=.BANK0 RAM=bank0 //for registers explicitly in bank 0
> SECTION NAME=.BANK1 RAM=bank1 //for registers explicitly in bank 1
> SECTION NAME=.BANK2 RAM=bank2 //for registers explicitly in bank 2
> SECTION NAME=.BANK3 RAM=bank3 //for registers explicitly in bank 3
>
>
> There are a lot of double-slash comment delimeters above.  I'm using
> MS
> Outlook Express, and sometimes it decides on its own that a double
> slash
> could only be the start of a URL and "helfully" inserts the proper
> URL
> syntax.  Does anyone know how to shut off this obnoxious behaviour?
>
>
> *****************************************************************
> Embed Inc, embedded system specialists in Littleton Massachusetts
> (978) 742-9014, http://www.embedinc.com
>
> --
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> email listserv@mitvma.mit.edu with SET PICList DIGEST in the body
>
>

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