<s>
The	O
Macintosh	B-Device
Quadra	I-Device
605	O
(	O
also	O
sold	O
as	O
the	O
Macintosh	O
LC	B-Device
475	O
and	O
Macintosh	B-Device
Performa	I-Device
475	I-Device
)	O
is	O
a	O
personal	B-Device
computer	I-Device
designed	O
,	O
manufactured	O
,	O
and	O
sold	O
by	O
Apple	O
Computer	O
from	O
October	O
1993	O
to	O
July	O
1996	O
.	O
</s>
<s>
The	O
model	O
names	O
reflect	O
a	O
decision	O
made	O
at	O
Apple	O
in	O
1993	O
to	O
follow	O
an	O
emerging	O
industry	O
trend	O
of	O
naming	O
product	O
families	O
for	O
their	O
target	O
customers	O
Quadra	B-Device
for	O
business	O
,	O
LC	B-Device
for	O
education	O
,	O
and	O
Performa	B-Device
for	O
home	O
.	O
</s>
<s>
Accordingly	O
,	O
the	O
Performa	B-Device
475	O
and	O
476	O
was	O
sold	O
in	O
department	O
stores	O
and	O
electronics	O
stores	O
such	O
as	O
Circuit	O
City	O
,	O
whereas	O
the	O
Quadra	B-Device
was	O
purchased	O
through	O
an	O
authorized	O
Apple	O
reseller	O
.	O
</s>
<s>
When	O
introduced	O
,	O
the	O
Quadra	B-Device
605	O
was	O
the	O
least	O
expensive	O
new	O
computer	O
in	O
Apple	O
's	O
lineup	O
.	O
</s>
<s>
(	O
The	O
Performa	B-Device
410	I-Device
,	O
introduced	O
at	O
the	O
same	O
time	O
,	O
at	O
the	O
same	O
price	O
of	O
about	O
$	O
1,000	O
USD	O
,	O
which	O
included	O
a	O
monitor	O
,	O
was	O
based	O
on	O
the	O
much	O
older	O
Macintosh	B-Device
LC	I-Device
II	I-Device
with	O
a	O
16MHz	O
68030	O
processor	O
.	O
)	O
</s>
<s>
The	O
Quadra	B-Device
605	O
reuses	O
the	O
Macintosh	B-Device
LC	I-Device
III	I-Device
's	O
pizza	B-General_Concept
box	I-General_Concept
form	I-General_Concept
factor	I-General_Concept
with	O
minor	O
modifications	O
.	O
</s>
<s>
The	O
Quadra	B-Device
605	O
was	O
discontinued	O
in	O
October	O
1994	O
,	O
and	O
the	O
LC	B-Device
475	O
variant	O
continued	O
to	O
be	O
sold	O
to	O
schools	O
until	O
July	O
1996	O
.	O
</s>
<s>
Apple	O
offered	O
no	O
direct	O
replacement	O
for	O
these	O
machines	O
,	O
making	O
it	O
the	O
final	O
Macintosh	O
to	O
use	O
the	O
LC	B-Device
's	O
lightweight	O
slim-line	O
form	O
factor	O
.	O
</s>
<s>
Apple	O
would	O
not	O
release	O
another	O
desktop	O
computer	O
under	O
until	O
the	O
Mac	B-Device
Mini	I-Device
,	O
nearly	O
ten	O
years	O
later	O
.	O
</s>
<s>
All	O
models	O
come	O
standard	O
with	O
a	O
Motorola	O
68LC040	O
CPU	O
running	O
at	O
25MHz	O
,	O
4MB	O
RAM	B-Architecture
on	O
board	O
,	O
512KB	O
of	O
VRAM	O
(	O
expandable	O
to	O
1MB	O
)	O
,	O
1	O
LC	O
III-style	O
Processor	B-Device
Direct	I-Device
Slot	I-Device
,	O
1ADB	O
and	O
2	O
serial	O
ports	O
,	O
external	O
SCSI	B-Architecture
port	O
,	O
and	O
a	O
manual-inject	O
floppy	O
drive	O
.	O
</s>
<s>
Macintosh	B-Device
Performa	I-Device
475	I-Device
:	O
4MB	O
RAM	B-Architecture
,	O
160MB	O
HDD	O
.	O
</s>
<s>
Bundled	O
with	O
a	O
keyboard	B-Device
and	O
Apple	B-Device
Color	I-Device
Plus	I-Device
14	I-Device
"	I-Device
Display	I-Device
.	O
</s>
<s>
Macintosh	B-Device
Performa	I-Device
476	O
:	O
4MB	O
RAM	B-Architecture
,	O
230MB	O
HDD	O
.	O
</s>
<s>
Bundled	O
with	O
a	O
keyboard	B-Device
and	O
Apple	B-Device
Color	I-Device
Plus	I-Device
14	I-Device
"	I-Device
Display	I-Device
.	O
</s>
<s>
Macintosh	B-Device
Quadra	I-Device
605	O
:	O
4MB	O
RAM	B-Architecture
,	O
80MB	O
HDD	O
.	O
</s>
<s>
Macintosh	O
LC	B-Device
475	O
:	O
4MB	O
RAM	B-Architecture
,	O
80MB	O
HDD	O
.	O
</s>
<s>
Bundled	O
with	O
a	O
keyboard	B-Device
and	O
optionally	O
with	O
an	O
Apple	B-Device
Macintosh	I-Device
Color	I-Device
Display	I-Device
;	O
Education	O
market	O
only	O
.	O
</s>
<s>
Central	B-General_Concept
processing	I-General_Concept
unit	I-General_Concept
:	O
25	O
MHz	O
MC68LC040	O
,	O
32-bit	O
bus	O
.	O
</s>
<s>
8KB	O
of	O
on-chip	O
L1	O
cache	B-General_Concept
is	O
divided	O
into	O
4KB	O
of	O
data	O
and	O
4KB	O
of	O
instruction	O
cache	B-General_Concept
.	O
</s>
<s>
There	O
are	O
no	O
other	O
caches	O
,	O
although	O
an	O
L2	O
cache	B-General_Concept
is	O
possible	O
via	O
an	O
LC	B-Device
PDS	O
card	O
.	O
</s>
<s>
The	O
68LC040	O
can	O
be	O
replaced	O
with	O
a	O
68040	O
which	O
includes	O
onboard	O
Floating	B-General_Concept
Point	I-General_Concept
Unit	I-General_Concept
.	O
</s>
<s>
Random	B-Architecture
access	I-Architecture
memory	I-Architecture
:	O
4	O
MB	O
on	O
the	O
motherboard	O
,	O
one	O
72-pin	O
SIMM	O
socket	O
for	O
80ns	O
or	O
faster	O
SIMMs	O
.	O
</s>
<s>
The	O
official	O
supported	O
maximum	O
RAM	B-Architecture
is	O
36MB	O
in	O
one	O
32MB	O
72-pin	O
SIMM	O
plus	O
4MB	O
on	O
the	O
motherboard	O
,	O
but	O
larger	O
SIMMs	O
do	O
work	O
—	O
up	O
to	O
128MB	O
may	O
be	O
used	O
,	O
with	O
some	O
limits	O
on	O
RAM	B-Architecture
type	O
.	O
</s>
<s>
The	O
DJMEMC	O
memory	O
controller	O
used	O
in	O
the	O
Quadra	B-Device
605	O
's	O
predecessors	O
(	O
Quadra/Centris	O
610	O
,	O
Quadra/Centris	O
650	O
and	O
Quadra	B-Device
800	O
)	O
will	O
only	O
recognize	O
SIMMs	O
up	O
to	O
32MB	O
,	O
while	O
the	O
newer	O
MEMCjr	O
used	O
in	O
the	O
Quadra	B-Device
605	O
recognizes	O
the	O
larger	O
sizes	O
.	O
</s>
<s>
Video	O
:	O
Video	O
out	O
is	O
provided	O
by	O
one	O
DA15F	B-Protocol
connector	O
,	O
and	O
is	O
compatible	O
with	O
VGA	O
monitors	O
through	O
the	O
use	O
of	O
an	O
adaptor	O
.	O
</s>
<s>
Two	O
internal	O
Video	O
RAM	B-Architecture
slots	O
can	O
take	O
either	O
two	O
256KB	O
80	O
ns	O
68-pin	O
VRAM	O
SIMMs	O
,	O
or	O
two	O
512KB	O
SIMMs	O
.	O
</s>
<s>
Other	O
microphones	O
only	O
give	O
a	O
mic-level	O
input	O
,	O
and	O
do	O
not	O
work	O
with	O
the	O
Quadra	B-Device
605	O
.	O
</s>
<s>
Hard	O
Drive	O
:	O
80MB	O
,	O
160MB	O
or	O
230MB	O
SCSI	B-Architecture
hard	O
drive	O
,	O
depending	O
on	O
model	O
.	O
</s>
<s>
Battery	O
:	O
Quadra	B-Device
605s	O
take	O
a	O
lithium	O
half-AA	O
cell	O
3.6	O
V	O
battery	O
.	O
</s>
<s>
To	O
start	O
up	O
a	O
Quadra	B-Device
605	O
with	O
a	O
flat	O
or	O
missing	O
battery	O
,	O
it	O
can	O
be	O
turned	O
on	O
for	O
a	O
few	O
seconds	O
,	O
then	O
turned	O
off	O
for	O
a	O
second	O
then	O
on	O
again	O
.	O
</s>
<s>
Power	O
supply	O
:	O
30	O
watts	O
standard	O
,	O
but	O
many	O
second-hand	O
machines	O
come	O
with	O
replacement	O
PSUs	O
,	O
either	O
third-party	O
,	O
Apple	O
replacement	O
,	O
or	O
stripped	O
from	O
earlier	O
LC	B-Device
models	O
.	O
</s>
<s>
The	O
Quadra	B-Device
605	O
is	O
a	O
registered	O
Energy	O
Star-Compliant	O
product	O
.	O
</s>
<s>
A	O
Quadra	B-Device
605	O
can	O
support	O
a	O
monitor	O
up	O
to	O
35lb	O
/	O
15.9kg	O
.	O
</s>
<s>
The	O
Quadra	B-Device
605	O
contains	O
one	O
LC	B-Device
III-style	O
68030-compatible	O
LC	B-Device
Processor	B-Device
Direct	I-Device
Slot	I-Device
.	O
</s>
<s>
While	O
this	O
is	O
mechanically	O
compatible	O
with	O
previous	O
models	O
 '	O
LC	B-Device
PDS	O
(	O
it	O
will	O
take	O
96-pin	O
or	O
114-pin	O
LC	B-Device
PDS	B-Device
slot	I-Device
cards	O
)	O
it	O
is	O
not	O
a	O
true	O
LC	B-Device
PDS	O
,	O
but	O
emulates	O
the	O
previous	O
machine	O
's	O
68030	O
slot	O
.	O
</s>
<s>
Due	O
to	O
the	O
success	O
of	O
the	O
LC	B-Device
PDS	O
in	O
earlier	O
Macs	O
and	O
with	O
many	O
expansion	O
options	O
already	O
manufactured	O
,	O
Apple	O
kept	O
the	O
same	O
slot	O
type	O
in	O
these	O
68040	O
machines	O
.	O
</s>
<s>
While	O
the	O
Quadra	B-Device
605	O
's	O
LC	B-Device
PDS	O
is	O
mostly	O
68030-compatible	O
,	O
expansion	O
cards	O
made	O
specifically	O
for	O
'	O
030	O
processors	O
,	O
such	O
as	O
68881	O
or	O
68882	O
FPUs	O
,	O
will	O
not	O
work	O
.	O
</s>
<s>
In	O
addition	O
it	O
can	O
utilize	O
the	O
Apple	B-Device
IIe	I-Device
Card	I-Device
,	O
which	O
allows	O
the	O
605	O
to	O
emulate	O
an	O
Apple	B-Device
IIe	I-Device
.	O
</s>
<s>
The	O
Quadra	B-Device
605	O
has	O
one	O
SCSI	B-Architecture
bus	O
,	O
with	O
a	O
50-pin	O
internal	O
connector	O
(	O
with	O
space	O
for	O
one	O
low-profile	O
3.5	O
"	O
SCSI	B-Architecture
device	O
)	O
and	O
one	O
25-pin	O
DB25F	B-Protocol
external	O
connector	O
.	O
</s>
<s>
SCSI	B-Architecture
is	O
provided	O
by	O
an	O
NCR	O
53C96	O
controller	O
,	O
which	O
can	O
achieve	O
6MB/s	O
internally	O
with	O
a	O
fast	O
enough	O
drive	O
,	O
or	O
4MB/s	O
externally	O
.	O
</s>
<s>
Two	O
serial	O
ports	O
are	O
provided	O
on	O
a	O
Quadra	B-Device
605	O
;	O
one	O
8-pin	O
Mini-DIN	B-Protocol
printer	O
port	O
and	O
one	O
9-pin	O
Mini-DIN	B-Protocol
modem	O
port	O
similar	O
to	O
the	O
printer	O
port	O
,	O
but	O
with	O
an	O
extra	O
pin	O
to	O
supply	O
+5	O
V	O
power	O
from	O
the	O
ADB	O
power	O
supply	O
.	O
</s>
<s>
The	O
Quadra	B-Device
605	O
,	O
like	O
most	O
other	O
Macintoshes	O
manufactured	O
before	O
1999	O
,	O
includes	O
an	O
Apple	B-Device
Desktop	I-Device
Bus	I-Device
port	O
for	O
use	O
with	O
a	O
keyboard	B-Device
and	O
mouse	B-Device
or	O
other	O
low-speed	O
,	O
low-power	O
peripherals	O
.	O
</s>
<s>
Quadra	B-Device
605s	O
use	O
a	O
1024KB	O
ROM	O
,	O
version	O
7C	O
.	O
</s>
<s>
The	O
Quadra	B-Device
605	O
was	O
compatible	O
with	O
Apple	O
's	O
Macintosh	B-Device
Processor	I-Device
Upgrade	I-Device
Card	I-Device
which	O
provided	O
a	O
50MHz	O
PowerPC	O
601	O
CPU	O
.	O
</s>
<s>
DayStar	O
Digital	O
and	O
Sonnet	O
manufactured	O
100MHz	O
versions	O
of	O
this	O
card	O
which	O
could	O
also	O
be	O
used	O
in	O
the	O
Quadra	B-Device
605	O
.	O
</s>
<s>
These	O
upgrade	O
cards	O
plug	O
directly	O
into	O
the	O
68040	O
socket	O
,	O
but	O
when	O
fitted	O
cover	O
the	O
LC	B-Device
PDS	O
expansion	O
slot	O
,	O
making	O
this	O
slot	O
unavailable	O
for	O
other	O
expansion	O
cards	O
.	O
</s>
<s>
Some	O
Quadra	B-Device
605s	O
have	O
a	O
Cuda	O
reset	B-General_Concept
switch	I-General_Concept
which	O
is	O
used	O
to	O
manually	O
reset	B-General_Concept
the	O
PRAM	O
,	O
located	O
towards	O
the	O
rear	O
of	O
the	O
motherboard	O
just	O
to	O
the	O
front	O
of	O
the	O
audio	O
out	O
port	O
and	O
labeled	O
"	O
S1	O
"	O
.	O
</s>
<s>
The	O
keyboard	B-Device
power-on	O
key	O
will	O
not	O
start	O
up	O
a	O
Quadra	B-Device
605	O
as	O
there	O
is	O
no	O
soft	O
power-on	O
.	O
</s>
<s>
Only	O
the	O
rocker	O
switch	O
at	O
the	O
back	O
will	O
turn	O
a	O
Quadra	B-Device
605	O
on	O
or	O
off	O
.	O
</s>
<s>
Pressing	O
the	O
power-on	O
key	O
while	O
booted	O
is	O
the	O
same	O
as	O
selecting	O
the	O
Shut	O
Down	O
command	O
in	O
the	O
Finder	B-Application
,	O
and	O
once	O
a	O
Quadra	B-Device
605	O
has	O
completed	O
its	O
shutdown	O
process	O
it	O
will	O
prompt	O
the	O
operator	O
to	O
manually	O
turn	O
it	O
off	O
.	O
</s>
<s>
Quadra	B-Device
605s	O
have	O
no	O
reset	B-General_Concept
button	O
or	O
programmer	O
's	O
button	O
,	O
but	O
key	O
combinations	O
can	O
perform	O
the	O
same	O
functions	O
.	O
</s>
<s>
To	O
reset	B-General_Concept
,	O
users	O
can	O
hold	O
down	O
the	O
Command	O
,	O
Control	O
and	O
Power	O
keys	O
.	O
</s>
<s>
A	O
modified	O
Quadra	B-Device
605	O
motherboard	O
was	O
used	O
as	O
the	O
basis	O
of	O
early	O
Apple	B-Device
Interactive	I-Device
Television	I-Device
Box	I-Device
prototypes	O
.	O
</s>
<s>
The	O
standard	O
Gestalt	O
ID	O
for	O
a	O
25MHz	O
Quadra	B-Device
605	O
is	O
94	O
.	O
</s>
<s>
The	O
ID	O
of	O
the	O
logic	O
board	O
that	O
the	O
Quadra	B-Device
605	O
shares	O
with	O
other	O
LC/Performa	O
models	O
depends	O
on	O
two	O
things	O
.	O
</s>
<s>
Jumper	O
J18	O
(	O
located	O
just	O
behind	O
the	O
hard	O
drive	O
)	O
will	O
identify	O
the	O
computer	O
as	O
a	O
Quadra	B-Device
605	O
(	O
ID	O
94	O
@	O
25MHz	O
)	O
if	O
it	O
is	O
ON	O
,	O
and	O
as	O
an	O
LC475/Performa	O
47x	O
(	O
ID	O
89	O
@	O
25MHz	O
)	O
if	O
it	O
is	O
OFF	O
.	O
</s>
<s>
A	O
standard	O
Quadra	B-Device
605	O
is	O
capable	O
of	O
running	O
classic	B-Application
Mac	I-Application
OS	I-Application
versions	O
7.1	O
,	O
7.1.1	O
(	O
Pro	O
)	O
,	O
7.5	O
,	O
7.5.1	O
,	O
7.5.3	O
,	O
7.5.5	O
,	O
7.6	O
,	O
7.6.1	O
,	O
8.0	O
,	O
and	O
8.1	O
.	O
</s>
<s>
Versions	O
of	O
the	O
System	B-Application
Software	I-Application
below	O
7.5	O
require	O
the	O
use	O
of	O
System	O
Enabler	O
065	O
.	O
</s>
<s>
If	O
a	O
Quadra	B-Device
605	O
is	O
running	O
a	O
version	O
of	O
System	B-Operating_System
7.1	I-Operating_System
,	O
over-clocking	O
it	O
from	O
the	O
standard	O
25MHz	O
to	O
33MHz	O
will	O
change	O
the	O
Gestalt	O
ID	O
,	O
but	O
the	O
enabler	O
will	O
recognize	O
the	O
new	O
ID	O
.	O
</s>
