<s>
The	O
Amiga	B-Device
A570	I-Device
is	O
a	O
single-speed	O
external	O
CD-ROM	B-Device
drive	O
for	O
the	O
Amiga	B-Device
500	I-Device
computer	O
launched	O
by	O
Commodore	O
in	O
1992	O
.	O
</s>
<s>
It	O
was	O
designed	O
to	O
be	O
compatible	O
with	O
Commodore	B-Device
CDTV	I-Device
software	O
as	O
well	O
as	O
being	O
able	O
to	O
read	O
ordinary	O
ISO	B-Application
9660	I-Application
CD-ROM	B-Device
discs	O
.	O
</s>
<s>
The	O
A690/A570	O
used	O
a	O
proprietary	O
Mitsumi	O
CD-ROM	B-Device
interface	O
.	O
</s>
<s>
It	O
contained	O
a	O
header	O
for	O
an	O
internal	O
fast	B-Device
memory	I-Device
expansion	O
,	O
but	O
this	O
proprietary	O
memory	O
module	O
was	O
never	O
put	O
into	O
production	O
and	O
only	O
a	O
few	O
rare	O
developer	O
examples	O
of	O
this	O
exist	O
today	O
.	O
</s>
<s>
The	O
Amiga	B-Device
600	I-Device
(	O
ostensibly	O
the	O
A500	O
's	O
direct	O
replacement	O
)	O
was	O
,	O
like	O
the	O
later	O
A1200	B-Application
,	O
incompatible	O
with	O
this	O
external	O
drive	O
.	O
</s>
<s>
Thus	O
,	O
Commodore	O
were	O
in	O
the	O
position	O
of	O
having	O
launched	O
a	O
CD-ROM	B-Device
drive	O
for	O
a	O
discontinued	O
machine	O
,	O
while	O
a	O
similar	O
device	O
was	O
unavailable	O
for	O
their	O
current	O
low-end	O
Amiga	O
.	O
</s>
<s>
The	O
device	O
(	O
like	O
the	O
Amiga	O
A590	O
hard	B-Device
disk	I-Device
drive	I-Device
that	O
was	O
sold	O
by	O
Commodore	O
for	O
the	O
A500	O
)	O
had	O
no	O
through	O
connector	O
,	O
so	O
it	O
was	O
not	O
possible	O
to	O
connect	O
both	O
an	O
A590	O
and	O
an	O
A570	O
to	O
the	O
computer	O
at	O
the	O
same	O
time	O
.	O
</s>
<s>
The	O
A590	O
,	O
despite	O
having	O
an	O
XT	O
IDE	O
hard	B-Device
disk	I-Device
,	O
also	O
carried	O
a	O
SCSI	B-Architecture
interface	O
that	O
allowed	O
third-party	O
hard	B-Device
disks	I-Device
and	O
CD-ROM	B-Device
drives	O
to	O
be	O
fitted	O
.	O
</s>
<s>
While	O
these	O
drives	O
did	O
not	O
carry	O
CDTV	B-Device
emulation	O
,	O
the	O
lack	O
of	O
success	O
of	O
the	O
CDTV	B-Device
format	O
made	O
this	O
a	O
null	O
disadvantage	O
for	O
most	O
users	O
.	O
</s>
<s>
CDs	O
could	O
not	O
be	O
inserted	O
directly	O
into	O
the	O
A570	O
and	O
needed	O
to	O
be	O
put	O
in	O
a	O
caddy	B-Device
before	O
being	O
inserted	O
into	O
the	O
reader	O
slot	O
.	O
</s>
<s>
It	O
was	O
automatically	O
recognized	O
as	O
a	O
standard	O
Amiga	O
expansion	O
card	O
by	O
the	O
Amiga	B-Device
Zorro	I-Device
bus	I-Device
Autoconfig	B-Device
feature	O
.	O
</s>
<s>
Programs	O
for	O
playing	O
Audio	O
CDs	O
were	O
available	O
on	O
a	O
bundled	O
'	O
A570	O
Tools	O
 '	O
floppy	O
disk	O
,	O
public	O
domain	O
software	O
disk	O
collections	O
,	O
and	O
then	O
on	O
Aminet	B-Device
.	O
</s>
