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cwalter |
/*
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* RISE microprocessor bin2vhd utility
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* Copyright (c) 2006 Christian Walter <wolti@sil.at>
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* All rights reserved.
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*
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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
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* are met:
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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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cwalter |
* File: $Id: bin2vhd.c,v 1.2 2007-01-25 21:08:25 cwalter Exp $
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cwalter |
*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <getopt.h>
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#include <errno.h>
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#include <assert.h>
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#define PROGNAME "bin2vhd"
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cwalter |
#define VHDL_ENTITY_NAME "pgrom"
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#define VHDL_ARCHITECTURE_NAME "pgrom_rtl"
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cwalter |
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cwalter |
#define ADDRESS_BITS 16
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#define DATA_BITS 16
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cwalter |
#define IS_SYNCHRONOUS 0
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#define PC_INCREMENT 2
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#define NELEMS( x ) ( sizeof( x )/ sizeof( x[0] ) )
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void vPrintUsage( void );
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void vWriteEntity( FILE * pxOutputFile );
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void vWriteArchitectureHeader( FILE * pxOutputFile );
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void vWriteArchitectureData( FILE * pxOutputFile, const unsigned char *pucData,
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int iNBytes );
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void vWriteArchitectureFooter( FILE * pxOutputFile );
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const char *pcData2Hex( unsigned int uiHexValue );
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const char *pcAddress2Hex( unsigned int uiHexValue );
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int
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main( int argc, char **argv )
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{
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int iExitStatus = EXIT_FAILURE;
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FILE *pxInputFile, *pxOutputFile;
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unsigned char arucBuffer[80];
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size_t xNBytesRead;
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size_t xNBytesOffset;
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if( argc != 3 )
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{
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vPrintUsage( );
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}
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else if( ( pxInputFile = fopen( argv[1], "r" ) ) == NULL )
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{
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fprintf( stderr, "%s: can't open input file %s: %s\n", PROGNAME, argv[1],
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strerror( errno ) );
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}
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else if( ( pxOutputFile = fopen( argv[2], "w" ) ) == NULL )
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{
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fprintf( stderr, "%s: can't open input file %s: %s\n", PROGNAME, argv[1],
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strerror( errno ) );
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}
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else
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{
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assert( ( DATA_BITS % 8 ) == 0 );
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assert( ( ADDRESS_BITS % 8 ) == 0 );
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vWriteEntity( pxOutputFile );
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vWriteArchitectureHeader( pxOutputFile );
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xNBytesOffset = 0;
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do
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{
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xNBytesRead = fread( &arucBuffer[xNBytesOffset], 1,
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NELEMS( arucBuffer ) - xNBytesOffset, pxInputFile );
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if( xNBytesRead > 0 )
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{
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xNBytesOffset = xNBytesRead % ( DATA_BITS / 8 );
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vWriteArchitectureData( pxOutputFile, arucBuffer, xNBytesRead - xNBytesOffset );
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}
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}
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while( xNBytesRead > 0 );
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vWriteArchitectureFooter( pxOutputFile );
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( void )fclose( pxOutputFile );
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( void )fclose( pxInputFile );
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}
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}
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void
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vPrintUsage( )
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{
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fprintf( stderr, "Usage:\n" );
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fprintf( stderr, " bin2vhd source dest\n" );
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}
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void
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vWriteEntity( FILE * pxOutputFile )
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{
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cwalter |
fprintf( pxOutputFile, "library IEEE;\n" );
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fprintf( pxOutputFile, "use IEEE.STD_LOGIC_1164.all;\n" );
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fprintf( pxOutputFile, "use IEEE.NUMERIC_STD.all;\n" );
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fprintf( pxOutputFile, "entity %s is\n", VHDL_ENTITY_NAME );
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fprintf( pxOutputFile, "port (\n" );
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fprintf( pxOutputFile, " clk : in std_logic;\n" );
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fprintf( pxOutputFile, " addr : in std_logic_vector(%d downto 0 );\n", ( ADDRESS_BITS - 1 ) );
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fprintf( pxOutputFile, " data : out std_logic_vector(%d downto 0 ) );\n", ( DATA_BITS - 1 ) );
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fprintf( pxOutputFile, "end %s;\n", VHDL_ENTITY_NAME );
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fprintf( pxOutputFile, "\n" );
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}
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void
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vWriteArchitectureHeader( FILE * pxOutputFile )
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{
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fprintf( pxOutputFile, "architecture %s of %s is\n", VHDL_ARCHITECTURE_NAME, VHDL_ENTITY_NAME );
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fprintf( pxOutputFile, " signal sig_data_next : std_logic_vector(%d downto 0 );\n",
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( DATA_BITS - 1 ) );
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if( IS_SYNCHRONOUS )
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{
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fprintf( pxOutputFile, " signal sig_data_int : std_logic_vector(%d downto 0 ) );\n",
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( DATA_BITS - 1 ) );
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fprintf( pxOutputFile, "begin\n" );
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fprintf( pxOutputFile, " data <= sig_data_int\n" );
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fprintf( pxOutputFile, "process (clk)\n" );
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fprintf( pxOutputFile, " if clk'event and clk = '1' then\n" );
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fprintf( pxOutputFile, " sig_data_int <= sig_data_next;\n" );
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fprintf( pxOutputFile, " end if;\n" );
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fprintf( pxOutputFile, "end process;\n" );
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}
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else
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{
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fprintf( pxOutputFile, "begin\n" );
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fprintf( pxOutputFile, " data <= sig_data_next;\n" );
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}
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fprintf( pxOutputFile, "\n" );
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fprintf( pxOutputFile, " process( addr )\n" );
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fprintf( pxOutputFile, " begin\n" );
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fprintf( pxOutputFile, " case addr is\n" );
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}
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void
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vWriteArchitectureData( FILE * pxOutputFile, const unsigned char *pucData, int iNBytes )
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{
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static char arucBuffer[( DATA_BITS / 4 ) + 1];
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static unsigned int uiProgrammCounter = 0;
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int iBytePos, i;
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for( iBytePos = 0; iBytePos < iNBytes; )
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{
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for( i = 0; i < ( DATA_BITS / 4 ); i += 2, iBytePos++ )
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{
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sprintf( &arucBuffer[i], "%02X", pucData[iBytePos] );
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}
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fprintf( pxOutputFile, " when x\"%s\" => sig_data_next <= x\"%*s\";\n",
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pcAddress2Hex( uiProgrammCounter ), DATA_BITS / 4, arucBuffer );
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uiProgrammCounter += PC_INCREMENT;
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}
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}
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void
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vWriteArchitectureFooter( FILE * pxOutputFile )
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{
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fprintf( pxOutputFile, " when others => sig_data_next <= ( others => '0' );\n" );
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fprintf( pxOutputFile, " end case;\n" );
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fprintf( pxOutputFile, " end process;\n" );
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fprintf( pxOutputFile, "\n" );
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fprintf( pxOutputFile, "end %s;", VHDL_ARCHITECTURE_NAME );
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}
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const char *
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pcAddress2Hex( unsigned int uiHexValue )
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{
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static char arucBuffer[ADDRESS_BITS / 4 + 1];
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snprintf( arucBuffer, NELEMS( arucBuffer ), "%0*x", DATA_BITS / 4, uiHexValue );
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return arucBuffer;
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}
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