NEC FDl165 Product Description page 23

Flexible disk drive
Table of Contents

Advertisement

DL Plug
For a door lock hold condition to occur, Drive Select
and In Use signals must be present ini tially.
The
DL plug determines which signal the door lock hold
status depends on.
The door lock hold status will
exist as long as the signal that is selected by the
DL plug is present.
When you select plug position
1, door lock hold depends on the Drive Select signal.
When you select plug position 2, door lock hold de-
pends on the In Use signal.
The uni t
is· suppli ed
with DL 1 selected.
DH Plug
This plug controls the door lock hold status.
When
you select plug position 1,
you disable
the hold
status.
When you select plug position 2, you enable
the hold status.
The uni t
is supplied wi th DH 1
selected.
Table 2-1
Door Lock Plug Combinations
PLUG
PLUG,
IN USE PLUG
NO.
ID
POSITION
POSITION
EXPLANATION
1
DR
1
1
Door lock
=
Ready and
DL
1
Drive Select and Head
DH
1
(hold
Load or
disable)
Door lock
=
Drive Select
and In Use
2
DR
1
1
Door lock
=
Ready and
DL
1
Drive Select and Head
DH
1
(hold
Load
enable)
Door lock
=
Drive Select
and In Use
3
DR
1
2
(disable)
Door lock
=
Ready and
DL
1
Drive Select and Head
DH
1
Load
4
DR
2
2
Door lock
=
Drive Select
DL
2
and Head Load
DH
2
2-9

Advertisement

Table of Contents
loading

Table of Contents