Specifications
1.~4
Reacl
OperaUoUl
Reading
data
&om
the
d1sk
Is
accompUshecl
by:
a. Deactivating"the
WRITE
GATE
line.
r
b.
Activating the appropriate
D~
SELECT
line.
c. Assuring that
the
drive
ts
READY.
d. Selecting the appropriate head.
1.5.5 Write Operation
Writing data onto the
disk
is accomplished by:
a. Activating the appropriate
DRIVE
SELECT
Une.
b. Assuring that
the
drive is
READY.
c.
Clearing
any
write
fault
conditions (if that exist).
by
reselceting the drive.
d.
Selecting the
proper
head.
e.
Activating
the
WRITE
GATE
and plactng data
on
the
WRITE
DATA
Un
••
1.5.6
Head
Selection
Any
of
the
two
to
four
possible
heads can
be
seleded
by
placing
the
binary
address of that head on the
two
HEAD
SELECT
Unes.
1·8
)
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~
t