On December 22, 2003 10:19 pm, Greg Franks wrote:

With all due respect, are you really sure that you know what you are doing and or what you want?

Well, most of the time I don't know what I am doing. However, for guys that are even more challenged I have converted your program to c++ and made a few changes to the effect that I can specify on the command line the memory location I want to look at. For instance to look at memory location 68 you have to type: ./mem 68 The result is: 2 bytes at offset 68 are: f84d Here is my modified version: /* mem.cpp * Original program 'mem.c' by Greg Franks Dec 22 2003 * modified, converted to C++ and commented by J.Wildberger * execute with: ./mem + arg (memloc in decimal number) * compile with: c++ -o mem mem.cpp */ #include <iostream> #include <fcntl.h> //required for O_RDONLY #include <unistd.h> //required for lseek #include <iomanip> //required for setbase using namespace std; int main(int argc, char *argv[]) { if (argc != 2) { cout <<argc<<endl; cout <<"Specify memory offset from zero"<<endl; exit (1); } int n=atoi(argv[1]); int fd = open( "/dev/mem", O_RDONLY ); //open for read only if ( fd < 0 ) { perror( "Cannot open /dev/mem: " ); exit( 1 ); } else { off_t offset = lseek( fd, n, SEEK_SET ); if ( offset == (off_t)-1 ) { perror( "Seek: " ); exit( 1 ); } else { short x; ssize_t size = read( fd, &x, 4 ); if ( size == -1 ) { perror( "Read: " ); exit( 1 ); } cout << "2 bytes at offset " << n << " are: "<< setbase(16)<< x << endl; } } exit ( 0 ); } -- The Toronto Linux Users Group. Meetings: http://tlug.ss.org TLUG requests: Linux topics, No HTML, wrap text below 80 columns How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml