<s>
The	O
Apple	B-Device
IIe	I-Device
Card	I-Device
is	O
a	O
hardware	B-Application
emulation	I-Application
board	I-Application
,	O
also	O
referred	O
to	O
as	O
compatibility	B-Device
card	I-Device
,	O
which	O
allows	O
compatible	O
Macintosh	B-Device
computers	O
to	O
run	O
software	O
designed	O
for	O
the	O
Apple	B-Device
II	I-Device
series	I-Device
of	O
computers	O
(	O
with	O
the	O
exception	O
of	O
the	O
IIGS	B-Device
)	O
.	O
</s>
<s>
Released	O
in	O
March	O
1991	O
for	O
use	O
with	O
the	O
LC	B-Device
family	O
,	O
Apple	O
targeted	O
the	O
card	O
at	O
its	O
widely	O
dominated	O
educational	O
market	O
to	O
ease	O
the	O
transition	O
from	O
Apple	O
II-based	O
classrooms	O
,	O
with	O
thousands	O
of	O
entrenched	O
educational	O
software	O
titles	O
,	O
to	O
Macintosh-based	O
classrooms	O
.	O
</s>
<s>
Well	O
into	O
the	O
1990s	O
,	O
most	O
schools	O
still	O
had	O
a	O
substantial	O
investment	O
in	O
Apple	B-Device
II	I-Device
computers	I-Device
and	O
software	O
in	O
their	O
classrooms	O
and	O
labs	O
.	O
</s>
<s>
However	O
,	O
by	O
that	O
period	O
Apple	O
was	O
looking	O
to	O
phase	O
out	O
the	O
Apple	O
II	O
line	O
,	O
and	O
so	O
introduced	O
the	O
Apple	B-Device
IIe	I-Device
Card	I-Device
as	O
a	O
means	O
to	O
transition	O
Apple	O
II	O
educators	O
(	O
and	O
to	O
a	O
smaller	O
degree	O
,	O
home	O
and	O
small	O
business	O
users	O
)	O
by	O
migrating	O
them	O
over	O
to	O
the	O
Macintosh	B-Device
.	O
</s>
<s>
By	O
adding	O
the	O
optional	O
PDS	B-Device
card	O
to	O
low	O
cost	O
Macintosh	B-Device
computers	O
,	O
it	O
provided	O
backwards	O
compatibility	O
with	O
the	O
vast	O
Apple	O
II	O
software	O
library	O
of	O
over	O
10,000	O
titles	O
.	O
</s>
<s>
Software	O
could	O
even	O
be	O
run	O
directly	O
from	O
an	O
Apple	O
II	O
floppy	B-Device
diskette	I-Device
,	O
the	O
same	O
way	O
as	O
with	O
an	O
Apple	B-Device
IIe	I-Device
(	O
made	O
possible	O
via	O
the	O
card	O
's	O
cable-adapter	O
that	O
connected	O
a	O
standard	O
Apple	O
5.25	O
drive	O
)	O
.	O
</s>
<s>
A	O
similar	O
"	O
Apple	B-Device
IIGS	I-Device
Card	O
"	O
was	O
planned	O
for	O
running	O
16-bit	O
Apple	B-Device
IIGS	I-Device
software	O
,	O
but	O
was	O
canceled	O
after	O
being	O
deemed	O
too	O
costly	O
,	O
therefore	O
leaving	O
no	O
migration	O
path	O
for	O
that	O
segment	O
of	O
the	O
Apple	O
II	O
line	O
.	O
</s>
<s>
Apple	O
asked	O
the	O
media	O
to	O
call	O
the	O
peripheral	O
the	O
"	O
Apple	B-Device
IIe	I-Device
option	O
board	O
"	O
,	O
as	O
earlier	O
"	O
emulator	B-Application
"	O
cards	O
were	O
not	O
successful	O
.	O
</s>
<s>
The	O
Apple	B-Device
IIe	I-Device
Card	I-Device
worked	O
in	O
the	O
Macintosh	B-Device
LC	I-Device
series	O
(	O
I	O
,	O
II	O
,	O
III	O
,	O
III+	O
,	O
475	O
,	O
520	O
,	O
550	O
,	O
575	O
)	O
,	O
as	O
well	O
as	O
the	O
LC-slot	O
compatible	O
Color	B-Device
Classic	I-Device
.	O
</s>
<s>
When	O
running	O
in	O
Apple	O
II	O
emulation	B-Application
mode	O
,	O
certain	O
Macintosh	B-Device
peripherals	O
and	O
hardware	O
could	O
be	O
"	O
borrowed	O
"	O
and	O
used	O
as	O
Apple	O
II	O
devices	O
.	O
</s>
<s>
For	O
example	O
,	O
the	O
mouse	B-Device
,	O
keyboard	O
,	O
internal	O
speaker	O
,	O
clock	O
,	O
serial	B-Protocol
ports	I-Protocol
(	O
printer	O
,	O
modem	O
,	O
networking	O
)	O
,	O
extra	O
RAM	B-Architecture
(	O
up	O
to	O
1024	O
KB	O
)	O
,	O
internal	O
3.5	O
floppy	B-Device
drive	I-Device
and	O
hard	B-Device
disk	I-Device
all	O
functioned	O
as	O
Apple	O
II	O
devices	O
.	O
</s>
<s>
Furthermore	O
,	O
with	O
the	O
included	O
Y-cable	O
,	O
Apple	O
II	O
specific	O
peripherals	O
could	O
be	O
used	O
as	O
well	O
:	O
The	O
Apple	O
5.25	O
,	O
Apple	O
UniDisk	O
3.5	O
,	O
and	O
an	O
Apple	O
II	O
joystick	B-Device
or	O
paddles	B-Device
.	O
</s>
<s>
The	O
host	O
Macintosh	B-Device
required	O
special	O
emulation	B-Application
software	I-Application
(	O
a	O
boot	O
disk	O
)	O
launched	O
from	O
System	O
6.0.8	O
to	O
7.5.5	O
in	O
order	O
to	O
activate	O
the	O
IIe	B-Device
Card	O
.	O
</s>
<s>
Like	O
the	O
Apple	B-Device
IIe	I-Device
itself	O
,	O
the	O
Apple	B-Device
IIe	I-Device
Card	I-Device
uses	O
an	O
onboard	O
65C02	B-General_Concept
CPU	B-General_Concept
.	O
</s>
<s>
The	O
CPU	B-General_Concept
is	O
software-configurable	O
to	O
run	O
at	O
the	O
Apple	B-Device
IIe	I-Device
's	O
native	O
1.0	O
MHz	O
speed	O
or	O
at	O
an	O
accelerated	O
1.9MHz	O
.	O
</s>
<s>
Video	O
emulation	B-Application
(	O
text	O
and	O
graphics	O
)	O
is	O
handled	O
through	O
software	O
using	O
native	O
Macintosh	B-Device
QuickDraw	B-Operating_System
routines	O
,	O
which	O
often	O
results	O
in	O
operations	O
being	O
slower	O
than	O
a	O
real	O
Apple	B-Device
IIe	I-Device
except	O
on	O
higher-end	O
machines	O
.	O
</s>
<s>
Any	O
Macintosh	B-Device
that	O
supports	O
the	O
card	O
can	O
be	O
switched	O
into	O
560×384	O
resolution	O
for	O
better	O
compatibility	O
with	O
the	O
IIe	B-Device
's	O
280×192	O
color	O
High-Resolution	O
graphics	O
(	O
essentially	O
doubled	O
in	O
both	O
directions	O
on	O
the	O
Macintosh	B-Device
)	O
and	O
560x192	O
monochrome	O
double-high-rez/80	O
column	O
text	O
mode	O
(	O
doubled	O
vertically	O
)	O
,	O
using	O
the	O
card	O
's	O
onboard	O
17.234mhz	O
oscillator	O
in	O
place	O
of	O
the	O
usual	O
video	O
clock	O
thanks	O
to	O
the	O
local	O
bus	O
nature	O
of	O
the	O
PDS	B-Device
slot	I-Device
.	O
</s>
<s>
This	O
was	O
particularly	O
applicable	O
to	O
the	O
Color	B-Device
Classic	I-Device
which	O
is	O
otherwise	O
fixed	O
at	O
512×384	O
resolution	O
;	O
the	O
monitor	O
scan	O
rate	O
remains	O
the	O
same	O
,	O
but	O
horizontal	O
pixel	O
density	O
(	O
and	O
total	O
pixel	O
clocks	O
per	O
scanline	O
)	O
is	O
increased	O
by	O
10%	O
to	O
fit	O
the	O
greater	O
resolution	O
in	O
the	O
same	O
width	O
.	O
</s>
<s>
The	O
IIe	B-Device
card	O
has	O
256K	O
RAM	B-Architecture
;	O
half	O
is	O
used	O
to	O
emulate	O
the	O
Apple	B-Device
IIe	I-Device
's	O
standard	O
128K	O
memory	O
(	O
reproducing	O
its	O
64K	O
main	O
RAM	B-Architecture
plus	O
the	O
64K	O
bank-switched	O
Extended	B-Device
80-Column	I-Device
Text	I-Device
Card	I-Device
)	O
,	O
and	O
half	O
stores	O
the	O
IIe	B-Device
's	O
ROM	O
.	O
</s>
<s>
Macworld	O
reported	O
that	O
because	O
Apple	B-Device
IIGS	I-Device
engineers	O
helped	O
design	O
the	O
IIe	B-Device
Card	O
,	O
all	O
copy-protected	B-Application
and	O
other	O
software	O
except	O
for	O
"	O
a	O
few	O
very	O
esoteric	O
games	O
"	O
are	O
compatible	O
.	O
</s>
<s>
The	O
host	O
Macintosh	B-Device
emulates	B-Application
or	O
provides	O
native	O
access	O
to	O
many	O
of	O
the	O
expansion	B-Device
cards	I-Device
and	O
peripherals	O
one	O
might	O
install	O
in	O
a	O
bare	O
Apple	B-Device
IIe	I-Device
.	O
</s>
<s>
These	O
services	O
provided	O
to	O
the	O
IIe	B-Device
card	O
makes	O
the	O
simultaneous	O
running	O
of	O
the	O
host	O
's	O
System	B-Operating_System
7	I-Operating_System
impossible	O
.	O
</s>
<s>
Hardware	O
services	O
include	O
a	O
1.44	O
MB	O
3.5	B-Device
"	I-Device
SuperDrive	B-Device
,	O
mouse	B-Device
,	O
1	O
MB	O
RAM	B-Architecture
,	O
80-column	O
text	O
and	O
graphical	O
monochrome	O
or	O
color	O
display	B-Device
,	O
clock	O
,	O
numeric	B-Device
keypad	I-Device
,	O
two	O
hardware	O
serial	B-Protocol
ports	I-Protocol
(	O
in	O
addition	O
to	O
the	O
emulated	B-Application
serial	O
necessary	O
for	O
the	O
IIe	B-Device
mouse	B-Device
)	O
,	O
SCSI	B-Architecture
hard	B-Device
drive	I-Device
,	O
and	O
AppleShare	B-General_Concept
file	B-Application
server	I-Application
.	O
</s>
<s>
An	O
included	O
"	O
Y-cable	O
"	O
enables	O
the	O
attachment	O
of	O
up	O
to	O
two	O
external	O
140	O
KB	O
floppy	B-Device
disk	I-Device
5.25	B-Device
"	I-Device
Drives	I-Device
,	O
an	O
800	O
KB	O
"	O
intelligent	O
"	O
3.5	B-Device
"	I-Device
UniDisk	O
drive	O
,	O
and	O
a	O
joystick	B-Device
or	O
paddle	B-Device
control	I-Device
for	O
use	O
with	O
the	O
Apple	B-Device
IIe	I-Device
emulator	B-Application
.	O
</s>
<s>
800	O
KB	O
3.5	B-Device
"	I-Device
Drive	O
and	O
1.44	O
MB	O
SuperDrives	B-Device
are	O
not	O
recognized	O
when	O
attached	O
via	O
the	O
Y-cable	O
due	O
to	O
the	O
Disk	B-Device
Controller	I-Device
on	O
the	O
IIe	B-Device
card	O
lacking	O
support	O
.	O
</s>
<s>
The	O
product	O
included	O
the	O
PDS	B-Device
card	O
,	O
Y-cable	O
,	O
owner	O
's	O
manual	O
and	O
two	O
3.5	B-Device
"	I-Device
floppy	I-Device
disks	I-Device
:	O
the	O
'	O
Apple	B-Device
IIe	I-Device
installer	O
disk	O
 '	O
and	O
the	O
'	O
Apple	B-Device
IIe	I-Device
card	I-Device
startup	O
disk	O
 '	O
.	O
</s>
<s>
Apple	O
claimed	O
that	O
the	O
LC	B-Device
helped	O
the	O
company	O
regain	O
educational	O
market	O
share	O
lost	O
to	O
inexpensive	O
PC	O
clones	O
.	O
</s>
<s>
,	O
about	O
half	O
of	O
the	O
LCs	O
sold	O
to	O
schools	O
used	O
the	O
IIe	B-Device
Card	O
.	O
</s>
<s>
Notes	O
:	O
When	O
emulating	B-Application
the	O
Apple	B-Device
IIe	I-Device
,	O
only	O
a	O
full-screen	O
mode	O
is	O
available	O
and	O
all	O
native	O
Macintosh	B-Device
functions	O
are	O
suspended	O
while	O
running	O
(	O
a	O
proprietary	O
graphical	O
control	O
panel	O
,	O
running	O
outside	O
MacOS	O
,	O
is	O
available	O
for	O
configuring	O
the	O
virtual	O
Apple	O
II	O
slots	O
and	O
peripherals	O
;	O
however	O
,	O
both	O
native	O
and	O
emulated	B-Application
computer	O
function	O
are	O
suspended	O
during	O
this	O
activity	O
)	O
.	O
</s>
<s>
Macintosh	B-Device
functions	O
and	O
control	O
resume	O
only	O
once	O
emulation	B-Application
is	O
completely	O
shut	O
down	O
and	O
exited	O
.	O
</s>
<s>
The	O
card	O
plugs	O
into	O
the	O
PDS	B-Device
slot	I-Device
in	O
many	O
of	O
the	O
LC-series	O
Macintoshes	B-Device
,	O
but	O
not	O
all	O
models	O
and	O
system	O
software	O
combinations	O
are	O
supported	O
.	O
</s>
<s>
Apple	O
's	O
lists	O
the	O
following	O
models	O
as	O
Apple	O
IIe	O
Card-compatible	O
:	O
Color	B-Device
Classic	I-Device
,	O
Colour	O
Classic	O
II	O
,	O
LC	B-Device
,	O
LC	B-Device
II	O
,	O
III	O
&	O
III+	O
;	O
LC	B-Device
475	O
,	O
520	O
,	O
550	O
,	O
575	O
;	O
Quadra	O
605	O
and	O
Performa	O
4XX	O
,	O
52X	O
,	O
55X	O
,	O
56X	O
,	O
and	O
57X	O
.	O
</s>
<s>
However	O
,	O
other	O
68K	B-Device
models	O
that	O
have	O
an	O
LC-compatible	O
PDS	B-Device
slot	I-Device
and	O
support	O
24-bit	O
memory	O
addressing	O
are	O
generally	O
compatible	O
with	O
the	O
Apple	B-Device
IIe	I-Device
Card	I-Device
but	O
are	O
not	O
officially	O
supported	O
.	O
</s>
<s>
The	O
host	O
Macintosh	B-Device
requires	O
Apple	O
's	O
emulation	B-Application
software	I-Application
(	O
a	O
boot	O
disk	O
)	O
launched	O
from	O
System	O
6.0.8	O
to	O
7.5.5	O
in	O
order	O
to	O
activate	O
the	O
IIe	B-Device
Card	O
.	O
</s>
<s>
Systems	B-Operating_System
7.0	I-Operating_System
through	I-Operating_System
7.5.5	I-Operating_System
support	O
both	O
24	O
-	O
and	O
32-bit	O
addressing	O
on	O
suitable	O
Macintosh	B-Device
models	O
(	O
from	O
System	O
7.6	O
onwards	O
,	O
Macintosh	B-Device
system	O
software	O
does	O
not	O
support	O
the	O
required	O
24-bit	O
addressing	O
)	O
.	O
</s>
<s>
24-bit	O
addressing	O
can	O
be	O
enabled	O
on	O
supported	O
systems	O
with	O
the	O
Macintosh	B-Device
Memory	O
control	O
panel	O
.	O
</s>
<s>
The	O
Apple	B-Device
IIe	I-Device
Card	I-Device
will	O
not	O
work	O
with	O
32-bit	O
addressing	O
enabled	O
or	O
Macintosh	B-Device
System	O
Software	O
or	O
machines	O
locked	O
to	O
this	O
mode	O
.	O
</s>
<s>
Contrary	O
to	O
some	O
sources	O
,	O
the	O
LC	B-Device
630	O
and	O
Quadra	O
630	O
are	O
not	O
compatible	O
with	O
the	O
Apple	B-Device
IIe	I-Device
card	I-Device
because	O
those	O
computers	O
do	O
not	O
support	O
24-bit	O
mode	O
.	O
</s>
