<s>
The	O
P112	B-Device
is	O
a	O
stand-alone	O
8-bit	O
CPU	O
board	O
.	O
</s>
<s>
Typically	O
running	O
CP/M	B-Application
or	O
a	O
similar	O
operating	O
system	O
,	O
it	O
provides	O
a	O
Z80182	B-Device
(	O
Z80	B-General_Concept
upgrade	O
)	O
CPU	O
with	O
up	O
to	O
1MB	O
of	O
SRAM	O
memory	O
,	O
32KB	O
of	O
in-system	O
programmable	O
flash	O
ROM	O
,	O
serial	O
,	O
parallel	O
and	O
diskette	O
IO	O
,	O
and	O
a	O
realtime	O
clock	O
,	O
in	O
a	O
3.5-inch	O
drive	O
form	O
factor	O
.	O
</s>
<s>
The	O
P112	B-Device
is	O
notable	O
because	O
it	O
was	O
the	O
first	O
of	O
the	O
hobbyist	O
single	O
board	O
computers	O
to	O
reach	O
the	O
production	O
stage	O
.	O
</s>
<s>
The	O
P112	B-Device
hobbyist	O
computers	O
were	O
relatively	O
widespread	O
and	O
inspired	O
other	O
hobbyist	O
centered	O
home	O
brew	O
computing	O
projects	O
such	O
as	O
N8VEM	B-Device
home	O
brew	O
computing	O
project	O
.	O
</s>
<s>
The	O
P112	B-Device
project	O
still	O
maintains	O
many	O
devoted	O
enthusiasts	O
and	O
has	O
an	O
online	O
repository	O
of	O
software	O
and	O
other	O
information	O
.	O
</s>
<s>
The	O
P112	B-Device
computer	O
originated	O
as	O
a	O
commercial	O
product	O
of	O
"	O
D-X	O
Designs	O
Pty	O
Ltd	O
"	O
of	O
Australia	O
in	O
1996	O
.	O
</s>
<s>
As	O
of	O
August	O
2016	O
,	O
Dave	O
Brooks	O
has	O
released	O
the	O
hardware	O
and	O
software	O
components	O
of	O
P112	B-Device
into	O
the	O
public	O
domain	O
,	O
under	O
the	O
GPL	B-License
.	O
</s>
<s>
The	O
P112	B-Device
board	O
was	O
last	O
available	O
new	O
in	O
1996	O
by	O
Dave	O
Brooks	O
.	O
</s>
<s>
In	O
late	O
2004	O
on	O
the	O
Usenet	O
Newsgroup	O
comp.os.cpm	O
,	O
talk	O
about	O
making	O
another	O
run	O
of	O
P112	B-Device
boards	O
was	O
discussed	O
.	O
</s>
<s>
David	O
Griffith	O
decided	O
to	O
produce	O
additional	O
P112	B-Device
kits	O
with	O
Dave	O
Brooks	O
 '	O
blessing	O
and	O
the	O
assistance	O
of	O
others	O
.	O
</s>
<s>
In	O
addition	O
Terry	O
Gulczynski	O
makes	O
additional	O
P112	B-Device
derivative	O
hobbyist	O
home	O
brew	O
computers	O
.	O
</s>
<s>
Hal	O
Bower	O
was	O
very	O
active	O
in	O
the	O
mid	O
1990s	O
on	O
the	O
P112	B-Device
project	O
and	O
the	O
commercial	O
"	O
Banked/Portable	O
BIOS	O
"	O
CP/M	B-Application
-compatible	O
operating	O
system	O
was	O
sold	O
for	O
the	O
P112	B-Device
between	O
1992	O
and	O
1999	O
.	O
</s>
<s>
It	O
has	O
now	O
been	O
released	O
as	O
open	O
source	O
under	O
the	O
GPL	B-License
license	I-License
.	O
</s>
