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cd ~/dimmpci

mkdir source

cd source

Create a simple ‘hello world’ C program called ‘hello.c’ such as this:

#include <stdio.h>

void main() {

printf(“Hello World\n”);

}

Now run the GCC compiler to create the binary file. Links should be set up so the compiler is in

the path. If not add ‘/opt/uClinux/bin’ to the path and everything should work fine.

m68k-pic-coff-gcc hello.c -o hello

Once the hello world program has been successfully compiled, copy the resulting binary file to

the romdisk directory and create a new image file.

cp ~/dimmpci/source/hello /opt/fs/romdisk/usr

cd /opt/fs

make imagez.bin

Now program the image file to the dimmPCI

CPU module and connect to it using the serial port.

Run the hello program in the root directory and, sure enough, it will print out ‘Hello World’.

You can use a ‘Makefile’ as well to automate the compiling process if you have multiple files or

special options, etc.

Using NFS to streamline the development cycle

If reprogramming of the dimmPCI

CPU module were necessary every time changes were made,

more time would be spent reprogramming than writing source code. Assuming that both the

linux PC and the dimmPCI

development board are connected via ethernet the solution is to

make part of the computer’s hard drive available on the dimmPCI filesystem using NFS. First an

entry will need to be added to the ‘/etc/exports’ file of the host computer similar to the following:

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 114 115

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AMC dimPCI 68VZ328 Manual de usuario Pagina 39