<s>
The	O
Rotronics	B-Device
Wafadrive	I-Device
is	O
a	O
magnetic	O
tape	O
storage	O
peripheral	O
launched	O
in	O
late	O
1984	O
for	O
the	O
ZX	B-Operating_System
Spectrum	I-Operating_System
home	O
computer	O
.	O
</s>
<s>
Each	O
tape	O
is	O
a	O
continuous	O
loop	O
,	O
unlike	O
cassette	B-Device
tape	I-Device
.	O
</s>
<s>
It	O
was	O
intended	O
to	O
compete	O
with	O
Sinclair	O
's	O
ZX	B-Device
Interface	I-Device
1	I-Device
and	O
ZX	B-Device
Microdrive	I-Device
.	O
</s>
<s>
The	O
Wafadrive	B-Device
comprises	O
two	O
continuous	O
loop	O
stringy	B-Device
floppy	I-Device
tape	O
drives	O
,	O
an	O
RS-232	O
interface	O
and	O
Centronics	O
parallel	O
port	O
.	O
</s>
<s>
The	O
cartridges	O
(	O
or	O
"	O
wafers	O
"	O
)	O
,	O
the	O
same	O
as	O
those	O
used	O
in	O
Entrepo	O
stringy	B-Device
floppy	I-Device
devices	O
for	O
other	O
microcomputers	O
,	O
are	O
physically	O
larger	O
than	O
Microdrive	O
cartridges	O
.	O
</s>
<s>
Quick	B-Device
Data	I-Device
Drive	I-Device
(	O
QDD	O
)	O
,	O
designed	O
to	O
connect	O
to	O
the	O
cassette	O
port	O
of	O
Commodore	O
64	O
and	O
VIC-20	B-Device
home	O
computers	O
.	O
</s>
