Hi all, I am back to school. I am installing a logical analyzer for the keyboard. Since then, I have a lot of work but I think that I will make better progress knowing what is going on from the point of view of the wires. Anyway, I thought that on every hppa boxes you need to have a PS2 kbd attached for the firmware test at the boot. But, I have chanced this to handle this situation. Sorry for the delay, Thomas ESIEE Team