Table of Contents
Advertisement
2.7
DRIVE IDENTIFICATION (DX) SELECTION
The controller identifies each disk drive in a system by the
position of the drive identification (DX) jumper on the disk
drive.
When only one disk drive is used in a system, insert
the DX jumper (see Figure 2-11) to identify that disk drive
as DX1. When two to four disk drives are used in a system,
assign each one a different DX number and insert the jumper
for that unit accordingly (see Figure 2-11).
four disk drives can be used in a system.
is supplied with the DX jumper in the DX1 position.
2.8
OPTION SELECTION
The Model FD1165 can be tailored to fulfill specific system
requirements by changing the positions of the option selec
tion jumpers on the PCB.
that are available by using the jumpers.
for the location of the jumpers.
signals that are affected by changing the option selection
jumpers, see Chapter 3.
2.8.1
Head Load Jumper (HL)
A Head Load signal from the controller initiates head load
action when the HL jumper is in the HLl position.
jumper is in the HL2 position, a Drive Select signal from
the controller initiates head load action.
supplied with HLl selected.
2.8.2
Radial Ready Jumper (RX)
In the RX1 position,
is gated by the Drive Select signal.
the Ready signal is independent of the Drive Select signal.
The FD1165 is supplied with the RX1 selected.
2.8.3
Side Select Jumper (SS)
The Side Select signal from the controller determines the
disk side when the SS jumper is in the SSI position.
the jumper is in the SS2 position, the Direction Signal from
the controller determines the disk side.
Signal level is High, side 0 is selected.
Signal level
is Low,
supplied with SSI selected.
This section describes the options
For an explanation of the
the Ready signal from the disk drive
side 1 is selected.
2-12
A maximum of
The Model FD1165
See Figure 2-11
When the
The FD1165 is
In the RX2 position,
If the Direction
If the Direction
The FD1165
When
is
Advertisement
Table of Contents
