Flexible
Disc
Controller
Subsystem
The flexible disc controller subsystem
is
responsible
for
converting
high level software commands into
the
control and data signals
used by a flexible disc drive. The flexible disc controller subsystem
can support up
to
two
flexible disc drives. The flexible drives
supported are
the
HP45812A 1.2 MB Internal Flexible
Disc
Drive
and
the
HP45811A 360
KB
Internal Flexible
Disc
Drive. The
subsystem controller
is
located on
the
processor board. It
interfaces
to
the
various drive configurations
via
a 34-pin
connector.
Jumpers
There are three jumpers on
the
processor board
used
to
configure
the
flexible disc controller subsystem. The jumpers are:
EE,
Ee,
ED;
E3
,
E2
,
E1;
and
E7
,
E8.
The following figure shows
the
configurations
for
these jumpers.
44
Processor
Boa
rd