<s>
The	O
Distributed	O
Network	O
Operating	B-General_Concept
System	I-General_Concept
(	O
DNOS	O
)	O
is	O
a	O
general	O
purpose	O
,	O
</s>
<s>
990/10	B-Device
,	I-Device
990/10A	I-Device
and	I-Device
990/12	I-Device
minicomputers	O
.	O
</s>
<s>
operating	B-General_Concept
system	I-General_Concept
to	O
initiate	O
the	O
action	O
specified	O
by	O
a	O
command	O
.	O
</s>
<s>
A	O
Macro	B-Language
Assembler	I-Language
is	O
provided	O
for	O
assembly	B-Language
language	I-Language
programs	O
.	O
</s>
<s>
Pascal	B-Application
,	O
are	O
supported	O
.	O
</s>
<s>
Standard	O
protocols	O
for	O
IBM	B-Device
2780/3780	I-Device
and	O
for	O
IBM	B-Operating_System
3270	I-Operating_System
communications	O
are	O
supported	O
.	O
</s>
<s>
Compatibility	O
-	O
DNOS	O
design	O
enables	O
compatibility	O
with	O
the	O
DX10	O
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
<s>
Many	O
of	O
the	O
familiar	O
operating	O
concepts	O
of	O
the	O
DX10	O
operating	B-General_Concept
system	I-General_Concept
are	O
integrated	O
within	O
the	O
design	O
of	O
DNOS	O
.	O
</s>
<s>
System	O
Generation	O
-	O
The	O
system	O
generation	O
utility	O
allows	O
a	O
user	O
to	O
interactively	O
specify	O
all	O
necessary	O
features	O
,	O
available	O
devices	O
,	O
and	O
optional	O
functions	O
when	O
creating	O
an	O
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
<s>
This	O
data	O
is	O
used	O
to	O
construct	O
a	O
file	O
that	O
defines	O
the	O
configuration	O
of	O
the	O
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
<s>
Message	O
Facilities	O
-	O
The	O
system	O
provides	O
a	O
comprehensive	O
set	O
of	O
codes	O
and	O
messages	O
describing	O
errors	O
and	O
special	O
conditions	O
that	O
occur	O
when	O
using	O
the	O
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
