Ok, thanks for the answers! I finally did it: search and find my serial null-modem cable. Which was simply, after all, in one of the drawer of the desk where the computer was. ;-)
Good news 1) hello tutorial works fine
Good news 2) I understand much better why make run/demo do not work on this computer Short answer: [init -> pci_drv] PCI driver started I/O memory [0,1000) not available Local MMIO mapping failed! [init -> vesa_drv] C++ runtime: Genode::Parent::Service_denied [init -> vesa_drv] void* abort(): abort called
I guess vesa_drv refused the service to the client because it needed PCI to work.
As the long answer, I am attaching the log file to this message.