Hi, I am having trouble getting variables I assert with a given value inside a structure to be assigned this value. I noticed this when running the MPLAB SIM. Below is a lot of detail describing my exact code and all relevant [or not] environment setup. I included a copy of my linker script which I had to edit to allow for such a large data structure. If there is any other more relevant info needed just ask Sincerely, Rock Macros: #define GENRE_TABLE_SIZE_X 8 #define GENRE_TABLE_SIZE_Y 3 #define MAX_NUMBER_OF_USERS 10 #define MAX_NUMBER_OF_SONGS_PER_GENRE_AND_INTENSITY 3 Declarations: struct songStruct { unsigned char flashCardLocation, hasPlayed; int songLength; char *title, *album, *genre; }; struct genreStruct { unsigned char totalPreferred; struct songStruct genreSongList[MAX_NUMBER_OF_SONGS_PER_GENRE_AND_INTENSITY]; }; //Large memory addressing------------------------------------------------------ #pragma udata myGenreSection=0x129 struct genreStruct genreTable[GENRE_TABLE_SIZE_X][GENRE_TABLE_SIZE_Y]; #pragma code #pragma udata myUserSection=0x60 struct user usersTable[MAX_NUMBER_OF_USERS]; #pragma code //----------------------------------------------------------------------------- Code: genreTable[0][0].totalPreferred = 2; genreTable[1][0].totalPreferred = 17; genreTable[2][0].totalPreferred = 1; genreTable[3][0].totalPreferred = 11; genreTable[4][0].totalPreferred = 34; genreTable[5][0].totalPreferred = 18; genreTable[6][0].totalPreferred = 0; genreTable[7][0].totalPreferred = 2; Linker Script: // $Id: 18f8720.lkr,v 1.1 2003/12/16 14:53:08 GrosbaJ Exp $ // File: 18f8720.lkr // Sample linker script for the PIC18F8720 processor LIBPATH . FILES c018i.o FILES clib.lib FILES p18f8720.lib CODEPAGE NAME=vectors START=0x0 END=0x29 PROTECTED CODEPAGE NAME=page START=0x2A END=0x1FFFF CODEPAGE NAME=idlocs START=0x200000 END=0x200007 PROTECTED CODEPAGE NAME=config START=0x300000 END=0x30000D PROTECTED CODEPAGE NAME=devid START=0x3FFFFE END=0x3FFFFF PROTECTED CODEPAGE NAME=eedata START=0xF00000 END=0xF003FF PROTECTED ACCESSBANK NAME=accessram START=0x0 END=0x5F //DATABANK NAME=gpr0 START=0x60 END=0xFF DATABANK NAME=myUserSection START=0x60 END=0x128 PROTECTED DATABANK NAME=myGenreSection START=0x129 END=0xCFF PROTECTED //DATABANK NAME=gpr1 START=0x100 END=0x1FF //DATABANK NAME=gpr2 START=0x200 END=0x2FF //DATABANK NAME=gpr3 START=0x300 END=0x3FF //DATABANK NAME=gpr4 START=0x400 END=0x4FF //DATABANK NAME=gpr5 START=0x500 END=0x5FF //DATABANK NAME=gpr6 START=0x600 END=0x6FF //DATABANK NAME=gpr7 START=0x700 END=0x7FF //DATABANK NAME=gpr8 START=0x800 END=0x8FF //DATABANK NAME=gpr9 START=0x900 END=0x9FF //DATABANK NAME=gpr10 START=0xA00 END=0xAFF //DATABANK NAME=gpr11 START=0xB00 END=0xBFF //DATABANK NAME=gpr12 START=0xC00 END=0xCFF //DATABANK NAME=gpr13 START=0xD00 END=0xDFF DATABANK NAME=gpr14 START=0xD00 END=0xEFF ACCESSBANK NAME=accesssfr START=0xF60 END=0xFFF PROTECTED SECTION NAME=CONFIG ROM=config STACK SIZE=0x100 RAM=gpr14 -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist