<s>
The	O
Sun386i	B-Device
(	O
codenamed	O
Roadrunner	O
)	O
is	O
a	O
discontinued	O
hybrid	O
UNIX	O
workstation/PC	O
compatible	O
computer	O
system	O
produced	O
by	O
Sun	O
Microsystems	O
,	O
launched	O
in	O
1988	O
.	O
</s>
<s>
It	O
is	O
based	O
on	O
the	O
Intel	B-General_Concept
80386	I-General_Concept
microprocessor	B-Architecture
but	O
shares	O
many	O
features	O
with	O
the	O
contemporary	O
Sun-3	B-Device
series	O
systems	O
.	O
</s>
<s>
Unlike	O
the	O
Sun-3	B-Device
models	O
,	O
the	O
Sun386i	B-Device
has	O
a	O
PC-like	O
motherboard	O
and	O
"	O
mini-tower	O
"	O
-style	O
chassis	O
.	O
</s>
<s>
Two	O
variants	O
were	O
produced	O
,	O
the	O
Sun386i/150	O
and	O
the	O
Sun386i/250	O
with	O
a	O
20	O
or	O
25MHz	O
CPU	O
respectively	O
.	O
</s>
<s>
Floppy	B-Device
disk	I-Device
,	O
SCSI	B-Architecture
,	O
RS-232	O
and	O
Centronics	O
parallel	B-Device
interfaces	I-Device
are	O
also	O
provided	O
,	O
as	O
are	O
four	O
ISA	B-Architecture
slots	I-Architecture
(	O
one	O
8-bit	O
,	O
three	O
16-bit	O
)	O
and	O
four	O
proprietary	O
32-bit	O
"	O
local	O
"	O
bus	O
slots	O
.	O
</s>
<s>
The	O
latter	O
are	O
used	O
for	O
RAM	O
and	O
frame	B-Algorithm
buffer	I-Algorithm
cards	O
.	O
</s>
<s>
Mass	O
storage	O
options	O
are	O
either	O
91	O
or	O
327MB	O
internal	O
SCSI	B-Architecture
hard	B-Device
disks	I-Device
and	O
a	O
1.44MB	O
3.5-in	O
floppy	B-Device
drive	I-Device
.	O
</s>
<s>
Frame	B-Algorithm
buffer	I-Algorithm
options	O
include	O
the	O
1024×768	O
or	O
1152×	O
900-pixel	O
monochrome	O
BW2	O
card	O
,	O
the	O
8-bit	O
color	O
CG3	O
with	O
similar	O
resolutions	O
,	O
or	O
the	O
accelerated	O
8-bit	O
color	O
CG5	O
,	O
otherwise	O
known	O
as	O
the	O
Roadracer	O
or	O
GXi	O
framebuffer	B-Algorithm
.	O
</s>
<s>
This	O
uses	O
the	O
TI	O
TMS34010	B-General_Concept
graphics	O
processor	O
and	O
had	O
a	O
resolution	O
of	O
1152x900	O
.	O
</s>
<s>
In	O
addition	O
,	O
a	O
"	O
SunVGA	O
"	O
accelerator	O
card	O
can	O
be	O
installed	O
in	O
the	O
ISA	B-Architecture
expansion	O
slot	O
that	O
allows	O
a	O
DOS	O
session	O
to	O
display	O
a	O
full	O
VGA	O
window	O
on	O
the	O
desktop	O
.	O
</s>
<s>
The	O
Sun386i	B-Device
introduced	O
the	O
Sun	O
Type	O
4	O
keyboard	O
,	O
a	O
hybrid	O
of	O
the	O
earlier	O
Type	O
3	O
and	O
PC/AT	B-Device
layouts	O
.	O
</s>
<s>
This	O
was	O
later	O
used	O
for	O
the	O
SPARCstation	B-Device
line	O
of	O
workstations	B-Device
.	O
</s>
<s>
The	O
Sun386i	B-Device
's	O
firmware	O
is	O
similar	O
to	O
the	O
Sun-3	B-Device
'	O
s	O
"	O
PROM	O
Monitor	O
"	O
.	O
</s>
<s>
A	O
386	B-General_Concept
port	O
of	O
SunOS	B-Operating_System
is	O
the	O
native	O
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
<s>
SunOS	B-Operating_System
releases	O
4.0	O
,	O
4.0.1	O
and	O
4.0.2	O
support	O
the	O
architecture	O
.	O
</s>
<s>
A	O
beta	O
version	O
of	O
SunOS	B-Operating_System
4.0.3	O
for	O
the	O
Sun386i	B-Device
also	O
exists	O
but	O
was	O
not	O
generally	O
available	O
,	O
except	O
possibly	O
to	O
the	O
U.S.	O
government	O
.	O
</s>
<s>
Included	O
with	O
SunOS	B-Operating_System
are	O
the	O
SunView	B-Library
GUI	B-Application
and	O
VP/ix	O
MS-DOS	B-Application
emulator	O
.	O
</s>
<s>
This	O
runs	O
as	O
a	O
SunOS	B-Operating_System
process	O
and	O
thus	O
allows	O
multiple	O
MS-DOS	B-Application
session	O
to	O
be	O
run	O
simultaneously	O
,	O
a	O
major	O
selling	O
point	O
of	O
the	O
Sun386i	B-Device
.	O
</s>
<s>
Unix	B-Application
long	O
file	O
names	O
are	O
accessed	O
using	O
a	O
mapping	O
to	O
DOS	O
8.3	O
filenames	O
,	O
the	O
file	O
names	O
being	O
modified	O
to	O
include	O
a	O
tilde	O
and	O
to	O
be	O
unique	O
as	O
far	O
as	O
possible	O
.	O
</s>
<s>
This	O
system	O
is	O
similar	O
to	O
,	O
but	O
predates	O
,	O
that	O
used	O
for	O
long	O
file	O
names	O
in	O
Microsoft	O
's	O
VFAT	B-Application
.	O
</s>
<s>
The	O
C	O
:	O
drive	O
corresponds	O
to	O
a	O
file	O
in	O
the	O
Unix	B-Application
file	O
system	O
which	O
appears	O
to	O
DOS	O
as	O
a	O
20MB	O
hard	B-Device
disk	I-Device
.	O
</s>
<s>
This	O
is	O
used	O
especially	O
for	O
the	O
installation	O
of	O
copy-protected	O
software	O
;	O
files	O
in	O
this	O
virtual	O
drive	O
are	O
inaccessible	O
to	O
Unix	B-Application
programs	O
.	O
</s>
<s>
The	O
Sun386i	B-Device
version	O
of	O
SunOS	B-Operating_System
includes	O
many	O
features	O
not	O
found	O
in	O
the	O
versions	O
then	O
shipped	O
with	O
Sun-3	B-Device
workstations	I-Device
(	O
and	O
later	O
with	O
then-new	O
SPARC	O
workstations	B-Device
)	O
,	O
in	O
addition	O
to	O
VP/ix	O
.	O
</s>
<s>
These	O
additions	O
focus	O
on	O
ease	O
of	O
use	O
for	O
end	O
users	O
who	O
are	O
likely	O
not	O
to	O
be	O
UNIX	B-Application
experts	O
,	O
and	O
includes	O
enhanced	O
desktop	O
tools	O
(	O
which	O
,	O
for	O
the	O
first	O
time	O
at	O
Sun	O
,	O
used	O
color	O
by	O
default	O
)	O
and	O
an	O
"	O
out	O
of	O
box	O
experience	O
"	O
that	O
was	O
painless	O
and	O
administrator-free	O
,	O
targeted	O
to	O
bring	O
a	O
system	O
onto	O
the	O
network	O
(	O
"	O
box	O
to	O
mail	O
"	O
)	O
in	O
fifteen	O
minutes	O
.	O
</s>
<s>
It	O
uses	O
the	O
pioneering	O
Dynamic	O
RARP	B-Protocol
network	O
protocol	O
.	O
</s>
<s>
At	O
the	O
time	O
,	O
and	O
for	O
a	O
few	O
years	O
afterwards	O
until	O
DHCP	O
later	O
became	O
standard	O
,	O
no	O
other	O
vendors	O
 '	O
workstations	B-Device
(	O
or	O
PCs	O
)	O
were	O
as	O
easy	O
to	O
install	O
on	O
TCP/IP	B-Protocol
networks	I-Protocol
.	O
</s>
<s>
An	O
upgraded	O
model	O
,	O
the	O
Sun486i	O
(	O
codename	O
Apache	O
)	O
was	O
designed	O
,	O
incorporating	O
a	O
25	O
MHz	O
80486	B-General_Concept
CPU	O
and	O
improved	O
SCSI	B-Architecture
interface	O
.	O
</s>
<s>
BYTE	B-Application
in	O
1989	O
listed	O
the	O
Sun386i	B-Device
as	O
among	O
the	O
"	O
Excellence	O
"	O
winners	O
of	O
the	O
BYTE	B-Application
Awards	O
,	O
praising	O
its	O
ability	O
to	O
run	O
multiple	O
MS-DOS	B-Application
applications	O
under	O
SunOS	B-Operating_System
.	O
</s>
