<s>
The	O
SPARCclassic	B-Architecture
(	O
Sun	O
4/15	O
)	O
is	O
a	O
workstation	B-Device
introduced	O
by	O
Sun	O
Microsystems	O
in	O
November	O
1992	O
.	O
</s>
<s>
It	O
is	O
based	O
on	O
the	O
sun4m	B-Device
architecture	O
,	O
and	O
is	O
enclosed	O
in	O
a	O
lunchbox	O
chassis	O
.	O
</s>
<s>
It	O
shares	O
the	O
code	O
name	O
Sunergy	O
with	O
the	O
SPARCclassic	B-Architecture
X	O
,	O
SPARCstation	B-Architecture
LX	I-Architecture
,	O
and	O
SPARCstation	B-Device
ZX	O
.	O
</s>
<s>
It	O
was	O
replaced	O
by	O
the	O
SPARCstation	B-Architecture
4	I-Architecture
in	O
February	O
1994	O
.	O
</s>
<s>
The	O
SPARCclassic	B-Architecture
incorporates	O
a	O
single	O
50MHz	O
microSPARC	B-Device
processor	O
.	O
</s>
<s>
The	O
SPARCclassic	B-Architecture
has	O
three	O
banks	O
with	O
two	O
DSIMM	O
slots	O
each	O
.	O
</s>
<s>
The	O
SPARCclassic	B-Architecture
can	O
hold	O
one	O
internal	O
3.5-inch	O
50-pin	O
,	O
single	O
ended	O
,	O
fast-narrow	O
SCSI	B-Architecture
drive	O
and	O
a	O
floppy	O
.	O
</s>
<s>
It	O
also	O
supports	O
external	O
SCSI	B-Architecture
devices	O
.	O
</s>
<s>
There	O
is	O
no	O
IDE/ATAPI	O
support	O
.	O
</s>
<s>
The	O
SPARCclassic	B-Architecture
comes	O
with	O
an	O
on-board	O
AMD	O
Lance	O
Ethernet	O
chipset	O
providing	O
10BASE-T	B-Protocol
networking	O
as	O
standard	O
and	O
10Base2	O
and	O
10Base5	O
via	O
an	O
AUI	B-Protocol
transceiver	O
.	O
</s>
<s>
The	O
OpenBoot	B-Architecture
ROM	O
is	O
able	O
to	O
boot	O
from	O
network	O
,	O
using	O
RARP	O
and	O
TFTP	O
.	O
</s>
<s>
Like	O
all	O
other	O
SPARCstation	B-Device
systems	O
,	O
the	O
SPARCclassic	B-Architecture
holds	O
system	O
information	O
such	O
as	O
MAC	O
address	O
and	O
serial	O
number	O
in	O
NVRAM	O
.	O
</s>
<s>
The	O
following	O
operating	O
systems	O
run	O
on	O
a	O
SPARCclassic	B-Architecture
:	O
</s>
<s>
The	O
SPARCclassic	B-Architecture
was	O
designed	O
to	O
be	O
an	O
entry-level	O
workstation	B-Device
with	O
a	O
lower	O
price	O
point	O
than	O
the	O
SPARCstation	B-Architecture
LX	I-Architecture
;	O
it	O
has	O
a	O
lower-end	O
CG3	O
framebuffer	B-Algorithm
rather	O
than	O
the	O
LX	O
's	O
accelerated	O
CG6	O
.	O
</s>
<s>
The	O
SPARCclassic	B-Architecture
also	O
features	O
8-bit	O
audio	O
as	O
opposed	O
to	O
16-bit	O
audio	O
for	O
the	O
LX	O
.	O
</s>
<s>
In	O
July	O
1993	O
,	O
Sun	O
introduced	O
the	O
SPARCclassic	B-Architecture
X	O
,	O
a	O
stripped-down	O
SPARCclassic	B-Architecture
marketed	O
as	O
an	O
X	B-Protocol
terminal	I-Protocol
.	O
</s>
<s>
Rather	O
than	O
running	O
Solaris	B-Application
,	O
the	O
SPARCclassic	B-Architecture
X	O
loaded	O
and	O
ran	O
special	O
software	O
over	O
the	O
network	O
.	O
</s>
<s>
Sun	O
offered	O
an	O
upgrade	O
kit	O
to	O
a	O
full	O
workstation	B-Device
that	O
included	O
a	O
hard	O
drive	O
and	O
additional	O
memory	O
.	O
</s>
