<s>
The	O
A7000	O
and	O
A7000+	O
were	O
Acorn	O
Computers	O
 '	O
entry	O
level	O
computers	O
based	O
somewhat	O
on	O
the	O
Risc	B-Device
PC	I-Device
architecture	O
.	O
</s>
<s>
Launched	O
in	O
1995	O
,	O
the	O
A7000	O
was	O
considered	O
a	O
successor	O
to	O
the	O
A5000	O
,	O
fitting	O
into	O
Acorn	O
's	O
range	O
between	O
the	O
A4000	O
and	O
Risc	O
PC600	O
,	O
featuring	O
a	O
32MHz	O
ARM7500	O
system-on-a-chip	B-Architecture
(	O
SoC	O
)	O
and	O
either	O
2MB	O
,	O
4MB	O
or	O
8MB	O
of	O
RAM	O
soldered	O
to	O
the	O
motherboard	O
,	O
with	O
a	O
single	O
memory	O
slot	O
permitting	O
up	O
to	O
128MB	O
of	O
additional	O
RAM	O
.	O
</s>
<s>
In	O
performance	O
terms	O
,	O
the	O
A7000	O
was	O
described	O
as	O
being	O
three	O
to	O
four	O
times	O
faster	O
than	O
the	O
A4000	O
and	O
slightly	O
faster	O
than	O
a	O
Risc	B-Device
PC	I-Device
600	O
model	O
without	O
video	O
RAM	O
fitted	O
,	O
also	O
having	O
comparable	O
MIPS	O
and	O
Dhrystone	O
performance	O
ratings	O
to	O
66MHz	O
Intel	O
486DX2	B-Device
systems	O
.	O
</s>
<s>
Unlike	O
the	O
Risc	B-Device
PC	I-Device
,	O
the	O
A7000	O
had	O
been	O
"	O
designed	O
with	O
the	O
rigours	O
of	O
school	O
life	O
in	O
mind	O
"	O
,	O
aiming	O
for	O
"	O
a	O
7-year	O
classroom	O
lifespan	O
"	O
.	O
</s>
<s>
The	O
machine	O
's	O
case	O
was	O
similar	O
to	O
the	O
Acorn	B-Device
Online	I-Device
Media	I-Device
set-top	I-Device
box	I-Device
design	O
incorporating	O
the	O
same	O
SoC	O
,	O
and	O
the	O
product	O
was	O
considered	O
to	O
have	O
been	O
"	O
created	O
specifically	O
to	O
satisfy	O
the	O
education	O
market	O
"	O
.	O
</s>
<s>
The	O
ARM7500	O
system-on-a-chip	B-Architecture
combined	O
into	O
a	O
single	O
chip	O
an	O
ARM704	O
CPU	O
,	O
memory	O
management	O
unit	O
,	O
a	O
video	O
controller	O
"	O
similar	O
but	O
not	O
identical	O
to	O
the	O
VIDC20	B-Device
"	O
,	O
much	O
of	O
the	O
functionality	O
of	O
the	O
Risc	B-Device
PC	I-Device
's	O
I/O	O
controller	O
,	O
plus	O
support	O
for	O
PS/2	B-Protocol
keyboards	I-Protocol
and	O
joysticks	O
.	O
</s>
<s>
Acorn	B-Device
A7000	I-Device
Acorn	O
Risc	O
Technologies	O
-	O
A7000	O
Factsheet	O
Acorn	O
A7000+	O
Acorn	O
Clan	O
Newsletter	O
-	O
A7000+	O
Castle	O
A7000+	O
Notes	O
CPU	O
ARM7500	O
@	O
32	O
MHz	O
ARM7500FE	O
@	O
48	O
MHz	O
ARM7500FE	O
@	O
56	O
MHz	O
The	O
FE	O
in	O
the	O
ARM7500FE	O
identifier	O
indicates	O
integrated	O
floating	O
point	O
hardware	O
.	O
</s>
<s>
Additionally	O
1	O
SIMM	B-General_Concept
slot	O
,	O
supporting	O
an	O
additional	O
128	O
MB	O
.	O
</s>
<s>
Video	O
subsystem	O
VIDC20-like	O
video	O
controller	O
Video	O
controller	O
integrated	O
into	O
ARM7500	O
core	O
,	O
display	O
memory	O
is	O
shared	O
with	O
main	O
memory	O
.	O
</s>
<s>
Expansion	O
One	O
Eurocard-sized	O
podule	O
support	O
in	O
common	O
with	O
Archimedes-series	B-Device
machines	O
.	O
</s>
<s>
Case	O
One	O
3.5	O
inch	O
bay	O
,	O
with	O
floppy	O
drive	O
,	O
one	O
5.25	O
inch	O
bay	O
for	O
a	O
CD-ROM	B-Device
drive	O
.	O
</s>
<s>
Only	O
one	O
of	O
a	O
CD-ROM/DVD	O
-ROM	O
drive	O
or	O
a	O
Eurocard	O
Podule	O
could	O
be	O
fitted	O
.	O
</s>
<s>
Ports	O
RS-232	O
Serial	O
,	O
DB25	B-Protocol
Parallel	O
,	O
PS/2	B-Protocol
keyboard	I-Protocol
,	O
PS/2	B-Protocol
mouse	I-Protocol
,	O
3.5mm	O
headphone	O
audio	O
out	O
,	O
DE15	O
VGA	B-Protocol
8P8C	O
10Base-T	B-Protocol
network	O
(	O
optional	O
)	O
.	O
</s>
<s>
Dimensions	O
HWD	O
:	O
102	O
×	O
357	O
×	O
283	O
mm	O
Operating	O
system	O
RISC	B-Operating_System
OS	I-Operating_System
3.60	O
RISC	B-Operating_System
OS	I-Operating_System
3.71	O
.	O
</s>
<s>
RISC	B-Operating_System
OS	I-Operating_System
4	O
is	O
available	O
as	O
a	O
replacement	O
.	O
</s>
<s>
In	O
1998	O
,	O
MicroDigital	O
announced	O
a	O
variant	O
of	O
the	O
A7000+	O
called	O
the	O
Medi	O
,	O
repackaging	O
the	O
Acorn	O
system	O
in	O
a	O
new	O
case	O
and	O
providing	O
a	O
CD-ROM	B-Device
drive	O
and	O
two	O
free	O
expansion	O
slots	O
as	O
standard	O
,	O
as	O
opposed	O
to	O
offering	O
the	O
choice	O
of	O
a	O
CD-ROM	B-Device
drive	O
or	O
an	O
expansion	O
slot	O
,	O
along	O
with	O
a	O
built-in	O
sound	O
digitiser	O
.	O
</s>
<s>
Consequently	O
,	O
MicroDigital	O
pursued	O
the	O
development	O
of	O
another	O
ARM7500FE-based	O
computer	O
,	O
the	O
Mico	O
,	O
running	O
RISC	B-Operating_System
OS	I-Operating_System
4	O
and	O
adopting	O
the	O
ISA	B-Architecture
and	O
USB	B-Protocol
standards	O
,	O
relatively	O
novel	O
for	O
RISC	B-Operating_System
OS	I-Operating_System
machines	O
at	O
the	O
time	O
of	O
the	O
machine	O
's	O
introduction	O
.	O
</s>
<s>
Employing	O
an	O
existing	O
Twinhead	O
PC	O
laptop	O
design	O
with	O
a	O
"	O
standard	O
Windows	O
95	O
"	O
keyboard	O
and	O
"	O
two	O
button	O
glidepoint	O
"	O
touchpad	O
,	O
the	O
machine	O
's	O
footprint	O
was	O
stated	O
as	O
,	O
being	O
slightly	O
larger	O
but	O
thinner	O
(	O
at	O
47mm	O
)	O
than	O
Acorn	O
's	O
A4	O
laptop	O
,	O
offering	O
a	O
12.1-inch	O
colour	O
TFT	B-Device
screen	I-Device
with	O
a	O
resolution	O
displaying	O
up	O
to	O
256	O
colours	O
.	O
</s>
<s>
Alongside	O
the	O
48MHz	O
ARM7500FE	O
processor	O
,	O
the	O
machine	O
had	O
16MB	O
of	O
RAM	O
fitted	O
,	O
expandable	O
to	O
32MB	O
,	O
and	O
the	O
demonstrated	O
model	O
provided	O
a	O
2GB	O
hard	O
disk	O
,	O
high-density	O
floppy	O
drive	O
,	O
and	O
"	O
20-speed	O
CD-ROM	B-Device
"	O
drive	O
.	O
</s>
<s>
RISC	B-Operating_System
OS	I-Operating_System
3.71	O
was	O
demonstrated	O
running	O
on	O
the	O
machine	O
,	O
but	O
despite	O
operating	O
system	O
support	O
for	O
PCMCIA	O
devices	O
being	O
present	O
,	O
the	O
PCMCIA	O
slots	O
were	O
disabled	O
for	O
apparent	O
reliability	O
reasons	O
.	O
</s>
<s>
With	O
a	O
nickel	B-Device
metal	I-Device
hydride	I-Device
(	O
NiMH	B-Device
)	O
battery	O
,	O
four	O
hours	O
of	O
use	O
was	O
estimated	O
on	O
a	O
single	O
charge	O
.	O
</s>
<s>
A	O
subsequent	O
laptop	O
or	O
portable	O
initiative	O
involved	O
a	O
product	O
design	O
from	O
RiscStation	O
,	O
a	O
producer	O
of	O
ARM7500FE-based	O
RISC	B-Operating_System
OS	I-Operating_System
machines	O
,	O
based	O
on	O
hardware	O
by	O
Simtec	O
Electronics	O
.	O
</s>
