Flexible Disc Controller Subsystem; Jumpers - HP Vectra Reference Manual

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