<s>
The	O
Q40	B-Device
and	O
Q60	B-Device
(	O
sometimes	O
known	O
generically	O
as	O
the	O
Qx0	B-Device
series	O
)	O
are	O
computer	B-Device
motherboards	I-Device
designed	O
in	O
the	O
late	O
1990s	O
,	O
based	O
on	O
the	O
Motorola	B-Device
68040	I-Device
and	O
68060	B-General_Concept
microprocessors	B-Architecture
respectively	O
and	O
intended	O
to	O
be	O
partially	O
compatible	O
with	O
the	O
Sinclair	B-Device
QL	I-Device
microcomputer	B-Architecture
.	O
</s>
<s>
Later	O
these	O
were	O
sold	O
as	O
a	O
fully	O
assembled	O
computer	O
in	O
an	O
AT	O
desktop	B-General_Concept
case	I-General_Concept
.	O
</s>
<s>
The	O
Q40	B-Device
and	O
Q60	B-Device
motherboards	B-Device
were	O
designed	O
by	O
Peter	O
Graf	O
of	O
Germany	O
and	O
manufactured	O
by	O
D&D	O
Systems	O
of	O
the	O
United	O
Kingdom	O
.	O
</s>
<s>
Peter	O
Graf	O
designed	O
it	O
to	O
fit	O
any	O
standard	O
AT	B-Device
form	I-Device
factor	I-Device
computer	B-General_Concept
case	I-General_Concept
,	O
although	O
D&D	O
later	O
sold	O
it	O
as	O
complete	O
,	O
fully	O
assembled	O
computer	O
.	O
</s>
<s>
The	O
Q40	B-Device
consists	O
of	O
a	O
sub-AT	O
form	O
factor	O
board	O
comprising	O
a	O
40MHz	O
68040	B-Device
processor	O
,	O
1	O
MiB	O
of	O
video	O
RAM	B-Architecture
,	O
and	O
several	O
PLDs	O
implementing	O
a	O
QL-compatible	O
video	O
display	O
generator	O
,	O
an	O
ISA	B-Architecture
bus	I-Architecture
,	O
stereo	O
20kHz	O
audio	O
DACs	O
and	O
an	O
AT	B-Device
keyboard	I-Device
interface	O
.	O
</s>
<s>
Floppy	B-Device
disk	I-Device
,	O
ATA	B-Protocol
hard	B-Device
disk	I-Device
,	O
RS-232	O
and	O
Centronics	B-Device
printer	I-Device
port	I-Device
interfaces	O
are	O
provided	O
by	O
an	O
ISA	B-Architecture
"	O
multi-I/O	O
"	O
card	O
in	O
one	O
of	O
the	O
two	O
ISA	B-Architecture
slots	I-Architecture
provided	O
.	O
</s>
<s>
Up	O
to	O
32	O
MiB	O
of	O
FPM	O
or	O
EDO	O
RAM	B-Architecture
can	O
be	O
installed	O
in	O
two	O
72-pin	O
SIMM	B-General_Concept
slots	O
.	O
</s>
<s>
Also	O
included	O
are	O
sockets	O
for	O
two	O
ROM	B-Device
devices	O
,	O
2	O
kiB	O
of	O
non-volatile	O
RAM	B-Architecture
and	O
a	O
real-time	O
clock	O
.	O
</s>
<s>
The	O
Q40	B-Device
board	O
was	O
produced	O
in	O
limited	O
quantities	O
before	O
being	O
superseded	O
by	O
the	O
Q40i	O
;	O
essentially	O
a	O
Q60	B-Device
board	O
with	O
a	O
40MHz	O
68040	B-Device
.	O
</s>
<s>
The	O
Q60	B-Device
became	O
available	O
in	O
1999	O
.	O
</s>
<s>
It	O
is	O
a	O
revised	O
board	O
with	O
a	O
66MHz	O
68060	B-General_Concept
(	O
Q60/66	O
)	O
or	O
80MHz	O
68LC060	B-Device
(	O
Q60/80	O
)	O
processor	O
and	O
support	O
for	O
up	O
to	O
128	O
MiB	O
of	O
RAM	B-Architecture
.	O
</s>
<s>
Three	O
operating	B-General_Concept
systems	I-General_Concept
are	O
available	O
for	O
the	O
Q40/Q60	O
;	O
these	O
comprise	O
QDOS	O
Classic	O
(	O
an	O
enhanced	O
version	O
of	O
Qdos	B-Operating_System
1.10	I-Operating_System
)	O
,	O
SMSQ/E	B-Operating_System
and	O
a	O
custom	O
Linux	B-Application
distribution	I-Application
.	O
</s>
