RE: [cc65] ca65 .charmap directive

Thanks for the quick reply.  Your example, plus removing the "-t vic20" option on the ca65 command-line, allowed this to work.  From reading this directive's documentation, I would have thought that not to be the case, but it is ...

________________________________________
From: owner-cc65@musoftware.de [owner-cc65@musoftware.de] On Behalf Of Ullrich von Bassewitz [uz@musoftware.de]
Sent: Saturday, March 20, 2010 3:52 PM
To: cc65@musoftware.de
Subject: Re: [cc65] ca65 .charmap directive

On Sat, Mar 20, 2010 at 03:27:41PM -0400, rhurst@bidmc.harvard.edu wrote:
> I am having difficulty with this ... if I want to map the letters A-Z to screen values, i.e.,
[...]
> Am I misinterpreting its usage?

.charmap (and it's #pragma counterpart) maps source character codes into
target character codes. The assembler/compiler has a predefined mapping table
that tells how to map ISO-8859-15 (which is expected on source level) into
PETSCII/ATASCI or whatever. .charmap replaces entries in this translation
table. It does not do translation from one target character into another.

So what you want is probably:

        .charmap 'A', $01
        .charmap 'B', $02
        .charmap 'C', $03

Which works nicely:

-------------------------------------------------------------------------
ca65 V2.13.9 - (C) Copyright 1998-2005 Ullrich von Bassewitz
Main file   : t.s
Current file: t.s

000000r 1                       .charmap 'A', $01
000000r 1                       .charmap 'B', $02
000000r 1                       .charmap 'C', $03
000000r 1  01 02 03 00          .asciiz  "ABC"
000003r 1
-------------------------------------------------------------------------

Regards


        Uz


--
Ullrich von Bassewitz                                  uz@musoftware.de
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