| Description | This object gives the state of a jumper (if present and can be
determined) that controls the programming voltage called Vpp
to the Flash device. Vpp is required for programming (erasing
and writing) Flash. For certain older technology chips it is
also required for identifying the chips (which in turn is
required to identify which programming algorithms to use;
different chips require different algorithms and commands).
The purpose of the jumper, on systems where it is available,
is to write protect a Flash device.
On most of the newer remote access routers, this jumper is
unavailable since users are not expected to visit remote sites
just to install and remove the jumpers when upgrading software
in the Flash device. The unknown(3) value will be returned for
such systems and can be interpreted to mean that a programming
jumper is not present or not required on those systems.
On systems where the programming jumper state can be read back
via a hardware register, the installed(1) or notInstalled(2)
value will be returned.
This object is expected to be used in conjunction with the
ciscoFlashPartitionStatus object whenever that object has
the readOnly(1) value. In such a case, this object will
indicate whether the programming jumper is a possible reason
for the readOnly state. |