<s>
The	O
HP	B-Device
300	I-Device
"	O
Amigo	O
"	O
was	O
a	O
computer	O
produced	O
by	O
Hewlett-Packard	O
(	O
HP	O
)	O
in	O
the	O
late	O
1970s	O
based	O
loosely	O
on	O
the	O
stack-based	O
HP	B-Device
3000	I-Device
,	O
but	O
with	O
virtual	B-Architecture
memory	I-Architecture
for	O
both	O
code	O
and	O
data	O
.	O
</s>
<s>
The	O
HP300	B-Device
was	O
cut-short	O
from	O
being	O
a	O
commercial	O
success	O
despite	O
the	O
huge	O
engineering	O
effort	O
,	O
which	O
included	O
HP-developed	O
and	O
-manufactured	O
silicon	B-Algorithm
on	I-Algorithm
sapphire	I-Algorithm
(	O
SOS	O
)	O
processor	O
and	O
I/O	O
chips	O
.	O
</s>
<s>
The	O
HP300	B-Device
was	O
initially	O
designed	O
as	O
a	O
single-user	O
workstation	O
by	O
a	O
totally	O
separate	O
program	O
within	O
the	O
General	O
Systems	O
Division	O
(	O
GSD	O
)	O
,	O
the	O
Cupertino	O
,	O
California	O
home	O
of	O
the	O
HP	B-Device
3000	I-Device
business	O
computers	O
(	O
the	O
division	O
was	O
later	O
renamed	O
Computer	O
Systems	O
Division	O
CSY	O
)	O
.	O
</s>
<s>
Later	O
,	O
the	O
HP300	B-Device
design	O
team	O
developed	O
multi-user	O
abilities	O
,	O
and	O
an	O
ahead	O
of	O
its	O
time	O
inter-unit	O
processor	O
interconnect	O
that	O
let	O
one	O
HP300	B-Device
change	O
registers	O
in	O
other	O
inter-connected	O
HP300	B-Device
's	O
system	O
.	O
</s>
<s>
The	O
HP300	B-Device
featured	O
HP-IB	O
(	O
later	O
IEEE-488	O
)	O
interface	O
(	O
IF	O
)	O
as	O
the	O
I/O	O
bus	O
,	O
an	O
8	B-Device
"	I-Device
floppy	B-Device
disk	I-Device
,	O
and	O
a	O
built-in	O
fixed	O
12M	O
hard	B-Device
drive	I-Device
.	O
</s>
<s>
Later	O
drivers	O
for	O
HP7970E	O
tape	O
drive	O
allowed	O
for	O
easier	O
HP300	B-Device
system	O
back	O
ups	O
.	O
</s>
<s>
It	O
also	O
had	O
a	O
native	O
system	O
programming	O
language	O
,	O
a	O
database	O
,	O
BASIC	O
,	O
and	O
featured	O
screen	O
editing	O
for	O
RPG	B-Language
.	O
</s>
<s>
HP	O
Computer	O
Systems	O
Division	O
General	O
Manager	O
(	O
GM	O
)	O
,	O
Doug	O
Spreng	O
,	O
decided	O
the	O
file	O
system	O
differences	O
between	O
the	O
division	O
's	O
money	O
making	O
HP3000	B-Device
line	O
and	O
the	O
burgeoning	O
HP300	B-Device
would	O
keep	O
the	O
HP300	B-Device
from	O
being	O
successful	O
and	O
killed	O
the	O
product	O
.	O
</s>
<s>
HP	O
built	O
two	O
semi-truck	O
loads	O
of	O
units	O
before	O
shutting	O
down	O
the	O
HP300	B-Device
production	O
line	O
to	O
meet	O
customer	O
contractual	O
agreements	O
(	O
i.e.	O
</s>
<s>
The	O
processor	O
board	O
and	O
I/O	O
boards	O
were	O
used	O
in	O
later	O
HP	B-Device
3000	I-Device
systems	O
that	O
used	O
the	O
HP300	B-Device
's	O
advanced	O
designs	O
:	O
HP3000	B-Device
model	O
30	O
(	O
project	O
name	O
:	O
Koala	O
-	O
a	O
single	O
card	O
bay	O
stand-alone	O
box	O
)	O
and	O
model	O
33	O
(	O
project	O
name	O
:	O
Toothpick	O
-	O
a	O
double	O
card	O
bay	O
table	O
design	O
)	O
reused	O
many	O
of	O
HP300	B-Device
's	O
designs	O
.	O
</s>
<s>
The	O
HP300	B-Device
diagnostics	O
(	O
DUS	O
)	O
were	O
ported	O
over	O
and	O
used	O
in	O
these	O
and	O
future	O
HP3000	B-Device
models	O
.	O
</s>
<s>
Later	O
,	O
the	O
HP300	B-Device
design	O
team	O
over	O
came	O
the	O
first	O
generation	O
HP300	B-Device
slower	O
TTL	O
circuitry	O
with	O
a	O
SOS	O
design	O
(	O
project	O
name	O
:	O
Sizzler	O
)	O
.	O
</s>
<s>
Again	O
the	O
GM	O
killed	O
its	O
release	O
and	O
reused	O
its	O
designs	O
in	O
a	O
new	O
HP3000	B-Device
model	O
40	O
(	O
project	O
name	O
:	O
Cub	O
-	O
single	O
card	O
bay	O
stand-alone	O
box	O
)	O
and	O
the	O
model	O
44	O
(	O
project	O
name	O
:	O
Grizzly	O
-	O
double	O
card	O
bay	O
table	O
design	O
)	O
.	O
</s>
<s>
The	O
HP3000	B-Device
models	O
30	O
,	O
33	O
,	O
40	O
,	O
44	O
,	O
42	O
,	O
&	O
48	O
went	O
on	O
to	O
great	O
success	O
using	O
what	O
was	O
developed	O
in	O
the	O
HP300	B-Device
.	O
</s>
<s>
The	O
HP300	B-Device
's	O
change	O
to	O
one	O
(	O
at	O
the	O
time	O
)	O
high	O
speed	O
interface	O
HP-IB	O
channel	O
from	O
HP3000	B-Device
's	O
previous	O
use	O
of	O
many	O
different	O
type	O
internal	O
IF	O
cards	O
radically	O
changed	O
and	O
improved	O
future	O
HP	O
system	O
designs	O
.	O
</s>
<s>
Developed	O
about	O
the	O
same	O
time	O
in	O
Loveland	O
CO	O
,	O
then	O
later	O
in	O
the	O
same	O
GSD	O
Cupertino	O
site	O
,	O
the	O
HP	B-Device
250	I-Device
small	O
business	O
system	O
running	O
an	O
easy	O
to	O
use	O
HP250	O
Business	O
Basic	O
language	O
to	O
access	O
HP	O
's	O
Image	O
Database	O
,	O
was	O
based	O
on	O
the	O
workstation	O
using	O
a	O
HP	O
Loveland	O
calculator	O
processor	O
.	O
</s>
<s>
The	O
built-in	O
CRT	O
head	O
with	O
softkeys	O
and	O
the	O
embedded	O
keyboard	O
design	O
removed	O
from	O
the	O
HP300	B-Device
was	O
reused	O
in	O
the	O
HP250	O
table-top	O
designs	O
.	O
</s>
