System information

8 Special Implementations
Figure 8.2: GUI of the CHARM PCI bus analyzer.
trace program and provides a bridge for the socket connection of the Yapt software with
the standard input/output stream of the PCI trace program. The commands are sent to
the input stream of the trace program. The results are received with the aid of the output
stream of the trace program.
Following, the content of the configuration file /etc/services for the CHARM PCI bus
analyzer is shown:
# /etc/services:
#
pci_trace 45000/tcp pci_trace
...
The file /etc/services binds the network ports to the network services: port 45000 is bound
to the pci_trace service. The configuration file /etc/inetd.conf tells the Inet daemon which
program is related to the system services. The following content shows the entry of the Inet
configuration file /etc/inetd.conf of the CHARM card:
# /etc/inetd.conf
#
pci_trace stream tcp nowait root /ext/bin/pci_trace pci_trace
...
Yapt also provides additional features like the PCI trace console program. The following
list summarizes the features of the Yapt software.
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