1.0 INTRODUCTION
The SA400 minifloppy™drive offers the system
designer the random access storage capability
of
floppy disk drives in apackage the size
of
most
cassette tape units.
It
also provides superior data
integrity and faster throughput
of
data when com·
pared with cassette drives.
The SA400
is
based on the proven floppy disk
drive technology
of
the Shugart SA800 drive.
It
features aunique new direct drive stepping
motor
actuator, utilizing aspiral cam with av-groove
positive detent which assures precise location
of
the read/write head on atrack. The drive employs
the same proprietary
glass
bonded ferrite/ceramic
read/write head
as
the SA800 uses.
AC
power
requirements have been eliminated through the
use
of
a
DC
servo-controlled spindle drive motor.
The drive
is
also equipped with an interface which
allows upward expansion
of
the units within the
system and future system enhancements with the
large floppy drive.
Applications for the minifloppy drive include
word processing and text editing systems; mini
and micro computer program storage; power
typing systems; "intelligent" desktop calculators
and the microcomputer hobby market.
The
SAl04/l05
minidiskette™media used with
the SA400
is
similar
to
the standard flexible disk,
only smaller.
It
is available for soft (SAl04) or hard
(SAl05)
sectored formats. The minidiskette
diameter
is
5.125 inches (130.2 mm)
and
the jacket
is
asquare 5.25 inches (133.4 mm).
