<s>
Macintosh	B-Device
XL	I-Device
is	O
a	O
modified	O
version	O
of	O
the	O
Apple	B-Device
Lisa	I-Device
personal	O
computer	O
made	O
by	O
Apple	O
Computer	O
.	O
</s>
<s>
In	O
the	O
Macintosh	B-Device
XL	I-Device
configuration	O
,	O
the	O
computer	O
shipped	O
with	O
MacWorks	B-Application
XL	I-Application
,	O
a	O
Lisa	B-Device
program	O
that	O
allowed	O
64K	O
Macintosh	B-Device
ROM	O
emulation	O
.	O
</s>
<s>
An	O
identical	O
machine	O
was	O
previously	O
sold	O
as	O
Lisa	B-Device
2/10	O
with	O
the	O
Lisa	B-Device
OS	O
only	O
.	O
</s>
<s>
Macintosh	B-Device
XL	I-Device
has	O
a	O
400K	O
3.5	O
"	O
floppy	O
drive	O
and	O
an	O
internal	O
10MB	O
proprietary	O
"	O
Widget	O
"	O
hard	B-Device
drive	I-Device
with	O
provision	O
for	O
an	O
optional	O
5	O
or	O
10MB	O
external	O
ProFile	O
hard	B-Device
drive	I-Device
with	O
the	O
addition	O
of	O
a	O
parallel	O
interface	O
card	O
.	O
</s>
<s>
The	O
machine	O
uses	O
a	O
Motorola	B-Device
68000	I-Device
CPU	O
,	O
clocked	O
at	O
5MHz	O
together	O
with	O
512	O
KB	O
RAM	O
.	O
</s>
<s>
Macintosh	B-Device
XL	I-Device
was	O
discontinued	O
in	O
April	O
1985	O
.	O
</s>
<s>
Because	O
of	O
its	O
roots	O
as	O
a	O
Lisa	B-Device
—	O
unlike	O
all	O
other	O
Macintosh	B-Device
computers	O
—	O
the	O
stock	O
Macintosh	B-Device
XL	I-Device
used	O
rectangular	B-Algorithm
pixels	I-Algorithm
.	O
</s>
<s>
The	O
resolution	O
of	O
Macintosh	B-Device
XL	I-Device
's	O
12-inch	O
(	O
30.5cm	O
)	O
display	O
was	O
720×364	O
pixels	B-Algorithm
.	O
</s>
<s>
Square	O
pixels	B-Algorithm
were	O
available	O
through	O
the	O
Macintosh	B-Device
XL	I-Device
Screen	O
Kit	O
upgrade	O
that	O
changed	O
the	O
resolution	O
to	O
608×432	O
pixels	B-Algorithm
.	O
</s>
<s>
The	O
maximum	O
upgraded	O
RAM	O
with	O
conventional	O
add-in	O
RAM	O
cards	O
was	O
up	O
to	O
2	O
MB	O
–	O
quadruple	O
the	O
maximum	O
capacity	O
of	O
earlier	O
Macintosh	B-Device
computers	O
.	O
</s>
<s>
MacWorks	B-Device
Plus	I-Device
was	O
developed	O
by	O
Sun	O
Remarketing	O
as	O
a	O
successor	O
to	O
MacWorks	B-Application
XL	I-Application
in	O
order	O
to	O
provide	O
application	O
compatibility	O
with	O
the	O
Macintosh	B-Device
Plus	I-Device
computer	O
.	O
</s>
<s>
MacWorks	B-Device
Plus	I-Device
added	O
support	O
for	O
an	O
800KB	O
3.5	O
"	O
floppy	O
disk	O
and	O
System	B-Application
software	I-Application
up	O
through	O
version	O
6.0.3	B-Protocol
.	O
</s>
<s>
MacWorks	B-Device
Plus	I-Device
II	I-Device
extended	O
that	O
to	O
the	O
same	O
System	O
7.5.5	O
limit	O
imposed	O
on	O
all	O
68000	B-Device
processors	O
.	O
</s>
<s>
After	O
two	O
years	O
of	O
lackluster	O
sales	O
,	O
Apple	O
attempted	O
to	O
salvage	O
Lisa	B-Device
by	O
redesigning	O
some	O
hardware	O
components	O
and	O
renaming	O
it	O
as	O
Macintosh	B-Device
XL	I-Device
.	O
</s>
<s>
Basing	O
on	O
the	O
previous	O
sale	O
figures	O
of	O
Lisa	B-Device
,	O
Apple	O
ordered	O
the	O
limited	O
number	O
of	O
parts	O
as	O
to	O
last	O
through	O
1985	O
before	O
ending	O
the	O
production	O
.	O
</s>
<s>
The	O
redesign	O
spurred	O
a	O
record	O
number	O
of	O
orders	O
for	O
this	O
addition	O
to	O
the	O
Macintosh	B-Device
line	O
,	O
which	O
caught	O
Apple	O
off-guard	O
.	O
</s>
<s>
Due	O
to	O
the	O
limited	O
number	O
of	O
parts	O
ordered	O
,	O
Apple	O
had	O
sold	O
its	O
entire	O
allocations	O
of	O
Macintosh	B-Device
XL	I-Device
for	O
1985	O
much	O
earlier	O
than	O
anticipated	O
.	O
</s>
<s>
Had	O
Apple	O
continued	O
to	O
manufacture	O
Macintosh	B-Device
XL	I-Device
as	O
to	O
meet	O
the	O
demand	O
at	O
lower	O
price	O
,	O
the	O
company	O
would	O
have	O
lost	O
even	O
more	O
money	O
on	O
each	O
unit	O
.	O
</s>
<s>
In	O
1986	O
,	O
Apple	O
offered	O
the	O
exchange	O
program	O
for	O
the	O
owners	O
of	O
Lisa	B-Device
and	O
Macintosh	B-Device
XL	I-Device
.	O
</s>
<s>
The	O
owners	O
could	O
exchange	O
their	O
Lisa	B-Device
and	O
Macintosh	B-Device
XL	I-Device
along	O
with	O
$	O
1,495	O
US	O
for	O
the	O
new	O
Macintosh	B-Device
Plus	I-Device
and	O
Hard	B-Device
Disk	I-Device
20	I-Device
(	O
list	O
price	O
of	O
$	O
4,098	O
US	O
)	O
.	O
</s>
<s>
After	O
Apple	O
dropped	O
the	O
XL	O
from	O
their	O
price	O
list	O
in	O
September	O
1985	O
,	O
Sun	O
Remarketing	O
of	O
Logan	O
,	O
Utah	O
,	O
bought	O
a	O
number	O
of	O
Apple	O
's	O
remaining	O
inventory	O
and	O
continued	O
to	O
sell	O
them	O
under	O
license	O
with	O
their	O
updated	O
version	O
of	O
MacWorks	B-Device
Plus	I-Device
,	O
re-branding	O
it	O
as	O
Macintosh	B-Device
Professional	O
.	O
</s>
<s>
Although	O
no	O
new	O
Lisas	B-Device
were	O
available	O
for	O
sale	O
,	O
development	O
continued	O
on	O
MacWorks	B-Device
Plus	I-Device
to	O
support	O
the	O
installed	O
base	O
of	O
Lisas	B-Device
,	O
making	O
them	O
as	O
relevant	O
as	O
their	O
closely-related	O
cousin	O
Macintosh	B-Device
Plus	I-Device
.	O
</s>
<s>
Macintosh	B-Device
XL	I-Device
shares	O
the	O
same	O
legacy	O
as	O
Lisa	B-Device
before	O
it	O
.	O
</s>
<s>
However	O
,	O
the	O
increased	O
sales	O
from	O
the	O
emulation	O
of	O
the	O
Macintosh	B-Device
operating	O
system	O
proved	O
that	O
the	O
Macintosh	B-Device
family	O
badly	O
needed	O
a	O
more	O
professional	O
environment	O
which	O
could	O
support	O
larger	O
monitors	O
,	O
greater	O
memory	O
,	O
and	O
more	O
expandability	O
than	O
Macintosh	B-Device
512K	I-Device
offered	O
.	O
</s>
