<s>
The	O
Scorpion	B-Operating_System
ZS-256	O
(	O
ru	O
:	O
Скорпион	O
ЗС-256	O
)	O
was	O
a	O
very	O
widespread	O
ZX	B-Architecture
Spectrum	I-Architecture
clone	I-Architecture
produced	O
in	O
St.	O
Petersburg	O
by	O
Sergey	O
Zonov	O
(	O
same	O
person	O
behind	O
the	O
"	O
Leningrad	O
"	O
clone	O
)	O
.	O
</s>
<s>
Introduced	O
in	O
1992	O
,	O
it	O
was	O
fitted	O
with	O
a	O
Zilog	B-General_Concept
Z80B	I-General_Concept
processor	O
,	O
a	O
AY-3-8910	B-Device
sound	O
chip	O
,	O
whilst	O
RAM	B-Architecture
memory	I-Architecture
options	O
ranged	O
from	O
256	O
to	O
1024KB	O
.	O
</s>
<s>
The	O
computer	O
was	O
usually	O
assembled	O
in	O
a	O
mini	B-General_Concept
tower	I-General_Concept
configuration	O
with	O
a	O
standard	O
IBM	O
power	O
supply	O
,	O
allowing	O
the	O
connection	O
of	O
peripherals	O
,	O
drives	O
,	O
etc	O
.	O
</s>
<s>
Various	O
expansions	O
were	O
produced	O
,	O
including	O
SMUC	O
–	O
an	O
adapter	O
for	O
IDE	B-Protocol
and	O
ISA	B-Architecture
slots	I-Architecture
,	O
which	O
allowed	O
the	O
use	O
of	O
IBM	O
PC	O
compatible	O
hard	B-Device
drives	I-Device
and	O
expansion	O
cards	O
.	O
</s>
<s>
The	O
Shadow	O
Service	O
Monitor	O
(	O
debugger	B-Application
)	O
in	O
the	O
BASIC	O
ROM	O
was	O
activated	O
by	O
pressing	O
the	O
Magic	O
Button	O
(	O
NMI	O
)	O
.	O
</s>
<s>
There	O
was	O
also	O
the	O
option	O
of	O
fitting	O
the	O
machine	O
with	O
a	O
ProfROM	O
which	O
included	O
such	O
software	O
as	O
a	O
clock	O
,	O
hard	B-Device
disk	I-Device
utilities	O
,	O
and	O
the	O
ZX-Word	O
text	O
editor	O
.	O
</s>
<s>
The	O
computer	O
can	O
work	O
with	O
TR-DOS	B-Operating_System
,	O
CP/M	B-Application
and	O
IS-DOS	B-Operating_System
systems	O
.	O
</s>
<s>
In	O
1996	O
,	O
the	O
Scorpion	B-Operating_System
ZS-256	O
Turbo+	O
version	O
was	O
introduced	O
,	O
featuring	O
a	O
"	O
turbo	O
"	O
mode	O
(	O
7	O
MHz	O
instead	O
of	O
the	O
original	O
's	O
3.50MHz	O
)	O
,	O
IDE	B-Protocol
hard	I-Protocol
drive	I-Protocol
,	O
101-key	O
PC	O
type	O
keyboard	O
,	O
3.5	O
floppy	O
disc	O
drive	O
and	O
a	O
XTR	O
modem	B-Application
(	O
allowing	O
access	O
to	O
ZX	O
Net	O
and	O
FidoNet	O
)	O
.	O
</s>
<s>
A	O
version	O
of	O
the	O
mainboard	O
called	O
GMX	O
(	O
Graphic	O
Memory	O
eXpander	O
)	O
comes	O
with	O
2MB	O
of	O
RAM	B-Architecture
and	O
can	O
emulate	O
other	O
clones	O
like	O
the	O
Pentagon	B-Device
128	I-Device
.	O
</s>
<s>
It	O
has	O
new	O
graphics	O
modes	O
:	O
640	O
x	O
200	O
with	O
16	O
colors	O
;	O
80x25	B-Application
character	O
text	B-Application
mode	I-Application
.	O
</s>
<s>
Production	O
of	O
Spectrum-compatible	O
computers	O
ceased	O
in	O
1998	O
,	O
with	O
the	O
Scorpion	B-Operating_System
company	O
focusing	O
on	O
the	O
sale	O
of	O
IBM	O
PC-compatibles	O
and	O
office	O
equipment	O
.	O
</s>
<s>
Additional	O
GMX	O
video	O
modes	O
:	O
640	O
x	O
200	O
with	O
16	O
colors	O
;	O
80	O
x	O
25	O
character	O
text	B-Application
mode	I-Application
.	O
</s>
