Error when tried to build manually Hello Demo

Hi all,

I would like build manually the 'Hello Tutorial' demo. But I have an error to execute ./core.

I follow the tutorial :

1. Build the server side by make hello/server

2. Build the client side by

make drivers/timer make hello/client

Then, the tutoriel told me to execute a binary ./core. But I couldn't find core file in my bin/ directory so I build it by

make core hello/client

Then I execute ./core, my program is stopping at

int main(): --- create local services --- int main(): --- start init --- Could not open file "init" ROM module "init" not present int main(): transferred 79 MB to init

Would you like give me some advice ?

Thanks,

Le Bao