-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Michael,
> Looking at the core/devices/atmega328p directory (for the Uno) I > see three 'device.*' files and the atmega328p.frt file, which all > have the notation "generated automatically, do not edit". In each > of those I note references to the TW* declarations desired for my > Uno. These are no references but the reference itself. e.g. in the file atmega328p.frt contains lines like \ TWI &189 constant TWAMR \ TWI (Slave) Address Mask Register $FE constant TWAMR_TWAM \ &184 constant TWBR \ TWI Bit Rate register &188 constant TWCR \ TWI Control Register $80 constant TWCR_TWINT \ TWI Interrupt Flag $40 constant TWCR_TWEA \ TWI Enable Acknowledge Bit These are the *definitions* of the constants for later use. The WANT_TWI option includes the file device.inc at compile time and does basically the same: provide the definitions for further reference. The amforth-shell reads the py file for exactly the same purpose, but a little bit smarter. The amforth-shell can replace the TWBR string with its numeric value at runtime... > If I shouldn't be editing these files, I'm unclear what actions I'm > to take to get them properly modified. There is no need to re-define the numbers. If you do so, you basically end up with a situation like : pi 4 ; or worse: : -1 0 ; Never do so. > My understanding is that the only place I should be modifying > anything is in the master project asm file. If this is the case, > then it appears to be significant as to specifically where an > addition (a WANT option, for instance) is to be inserted. WANT options are part of the template.asm or however you name your master project assembler file... If you decide to use the amforth-shell, you dont need the WANT-Options any longer. Matthias -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iEYEARECAAYFAlJpYygACgkQ9bEHdGEMFjNNBgCg5QU+5N408cM/I6yF/Tu5Jv3J yegAn1+CCXz3MeHKJguTgTYWYyKwIycY =fTK+ -----END PGP SIGNATURE----- ------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60135991&iu=/4140/ostg.clktrk _______________________________________________ Amforth-devel mailing list for http://amforth.sf.net/ Amforth-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/amforth-devel
