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Copyright (c) 2004, Theodore A. Roth
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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* Neither the name of the copyright holders nor the names of
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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<!-- $Id: Device.dtd,v 1.12 2005/10/21 20:55:19 joerg_wunsch Exp $ -->
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This file provides a Document Type Definition (DTD) for XML data files which
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describe everything thing we need to generate the <avr/io*.h> header files.
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Although ATMEL supplies XML device files already with AvrStudio >= 4.x, they
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contain far more data than we need. In addition, there is information that we
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need which they do not provide. Also, it may not be legal for us to include
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those files with avr-libc.
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I have written a python program (Atmel2libc.py) which will read ATMEL's XML
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files and spit out a file which will validate against this DTD so that we can
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leverage the data in those files. We will still have to manually add some data
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to our generated xml files before we can use them to generate our headers.
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<!ELEMENT version (#PCDATA)>
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<!ELEMENT description (#PCDATA)>
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<!ELEMENT memory_sizes (
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<!ELEMENT flash_size (#PCDATA)>
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<!ELEMENT eeprom_size (#PCDATA)>
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<!ELEMENT int_sram_size (#PCDATA)>
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<!ATTLIST int_sram_size start_addr CDATA #REQUIRED>
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<!ELEMENT ext_sram_size (#PCDATA)>
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<!ATTLIST ext_sram_size start_addr CDATA #REQUIRED>
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<!ELEMENT interrupts (vector+)>
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<!-- insn_size in bytes -->
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insn_size (2 | 4) #REQUIRED
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num_vects CDATA #REQUIRED
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<!ELEMENT sig_name (#PCDATA)>
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<!ELEMENT ioregisters (ioreg+)>
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<!ELEMENT alt_name (#PCDATA)>
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<!ELEMENT bit_field (
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access CDATA #REQUIRED
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<!-- If the is no bootloader element in the XML file, the device does not
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have bootloader support. -->
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<!-- The pagesize value is in bytes. Atmel's datasheets give it in
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<!-- Some recent ATtiny devices have boot loader support, but only
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have non-read while write (NRWW) behaviour throughout the
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entire flash, and no separate bootloader area. So do not
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insist on getting mode elements. -->
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<!ELEMENT bootloader (mode*)>
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pagesize CDATA #REQUIRED
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rww_start CDATA #IMPLIED
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rww_end CDATA #IMPLIED
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nrww_start CDATA #IMPLIED
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nrww_end CDATA #IMPLIED
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<!-- The boot mode size is (pagesize * pages). -->
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<!ELEMENT mode EMPTY>
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pages CDATA #REQUIRED
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start CDATA #REQUIRED
added
removed
xml/Device.dtd
