<s>
The	O
Enhanced	B-Device
Chip	I-Device
Set	I-Device
(	O
ECS	O
)	O
is	O
the	O
second	O
generation	O
of	O
the	O
Amiga	B-Device
computer	I-Device
's	O
chipset	O
,	O
offering	O
minor	O
improvements	O
over	O
the	O
original	B-Device
chipset	I-Device
(	O
OCS	B-Device
)	O
design	O
.	O
</s>
<s>
ECS	O
was	O
introduced	O
in	O
1990	O
with	O
the	O
launch	O
of	O
the	O
Amiga	B-Device
3000	I-Device
.	O
</s>
<s>
Amigas	B-Device
produced	O
from	O
1990	O
onwards	O
featured	O
a	O
mix	O
of	O
OCS	B-Device
and	O
ECS	O
chips	O
,	O
such	O
as	O
later	O
versions	O
of	O
the	O
Amiga	B-Device
500	I-Device
and	O
the	O
Commodore	B-Device
CDTV	I-Device
.	O
</s>
<s>
Other	O
ECS	O
models	O
were	O
the	O
Amiga	O
500+	O
in	O
1991	O
and	O
lastly	O
the	O
Amiga	B-Device
600	I-Device
in	O
1992	O
.	O
</s>
<s>
Notable	O
improvements	O
were	O
the	O
Super	B-Device
Agnus	I-Device
and	O
the	O
HiRes	O
Denise	O
chips	O
.	O
</s>
<s>
The	O
sound	O
and	O
floppy	O
controller	O
chip	O
,	O
Paula	O
,	O
remained	O
unchanged	O
from	O
the	O
OCS	B-Device
design	O
.	O
</s>
<s>
Super	B-Device
Agnus	I-Device
supports	O
2	O
MB	O
of	O
Chip	B-Device
RAM	I-Device
,	O
whereas	O
the	O
original	O
Agnus/Fat	O
Agnus	B-Device
and	O
subsequent	O
Fatter	B-Device
Agnus	I-Device
can	O
address	O
512	O
KB	O
and	O
1	O
MB	O
,	O
respectively	O
.	O
</s>
<s>
For	O
example	O
,	O
the	O
Linux	O
Amiga	B-Device
framebuffer	O
device	O
driver	O
allows	O
the	O
use	O
of	O
several	O
other	O
display	O
modes	O
.	O
</s>
<s>
As	O
an	O
incremental	O
update	O
,	O
ECS	O
was	O
intended	O
to	O
be	O
backward	O
compatible	O
with	O
software	O
designed	O
for	O
OCS	B-Device
machines	O
,	O
though	O
some	O
pre-ECS	O
games	O
were	O
found	O
to	O
be	O
incompatible	O
.	O
</s>
<s>
Additionally	O
,	O
features	O
from	O
the	O
improved	O
Kickstart	B-Device
2	O
operating	O
system	O
were	O
used	O
in	O
subsequent	O
software	O
,	O
and	O
since	O
these	O
two	O
technologies	O
largely	O
overlap	O
,	O
some	O
users	O
misjudged	O
the	O
significance	O
of	O
ECS	O
.	O
</s>
<s>
It	O
is	O
possible	O
to	O
upgrade	O
some	O
OCS	B-Device
machines	O
,	O
such	O
as	O
the	O
Amiga	B-Device
500	I-Device
,	O
to	O
obtain	O
partial	O
or	O
full	O
ECS	O
functionality	O
by	O
replacing	O
OCS	B-Device
chips	O
with	O
ECS	O
versions	O
.	O
</s>
<s>
ECS	O
was	O
followed	O
by	O
the	O
third	O
generation	O
AGA	B-Device
chipset	O
with	O
the	O
launch	O
of	O
the	O
Amiga	B-Device
4000	I-Device
and	O
Amiga	B-Application
1200	I-Application
in	O
1992	O
.	O
</s>
