<s>
MERA	B-Device
300	I-Device
was	O
a	O
Polish-built	O
8-bit	O
minicomputer	B-Architecture
family	O
.	O
</s>
<s>
The	O
MOMIK	O
8-B	O
(	O
MERA	O
)	O
minicomputer	B-Architecture
had	O
been	O
designed	O
in	O
Poland	O
in	O
1973	O
.	O
</s>
<s>
In	O
1974	O
the	O
MERA	B-Device
300	I-Device
(	O
MERA	O
ZSM	O
)	O
,	O
based	O
on	O
the	O
previous	O
model	O
,	O
was	O
introduced	O
.	O
</s>
<s>
MERA	B-Device
300	I-Device
was	O
designed	O
by	O
dr.	O
Waldemar	O
Romaniuk	O
and	O
Janusz	O
Popko	O
.	O
</s>
<s>
Family	O
of	O
the	O
MERA	B-Device
300	I-Device
systems	O
included	O
:	O
</s>
<s>
MERA	B-Device
300	I-Device
included	O
the	O
next	O
units	O
:	O
</s>
<s>
Sets	O
of	O
MERA	B-Device
300	I-Device
(	O
MERA	O
302	O
,	O
MERA	O
303	O
)	O
included	O
:	O
</s>
<s>
Instruction	O
memory	O
could	O
be	O
accessed	O
using	O
an	O
instruction	B-General_Concept
pointer	I-General_Concept
.	O
</s>
<s>
The	O
MERA	O
305	O
was	O
an	O
extended	O
version	O
with	O
DMA	B-General_Concept
and	O
a	O
four-level	O
interrupt	O
system	O
,	O
with	O
a	O
total	O
of	O
128	O
interrupts	O
(	O
4x32	O
)	O
.	O
</s>
<s>
The	O
computer	O
's	O
machine	B-Language
language	I-Language
consisted	O
of	O
34	O
instructions	O
,	O
including	O
arithmetical	O
,	O
logical	O
and	O
control	O
instructions	O
.	O
</s>
<s>
Data	O
input	O
devices	O
for	O
the	O
MERA	B-Device
300	I-Device
series	O
were	O
:	O
</s>
<s>
ALFA	O
311/M	O
monitor	B-Device
:	O
</s>
<s>
It	O
should	O
be	O
mentioned	O
that	O
the	O
MERA	B-Device
300	I-Device
RTX	O
was	O
not	O
necessary	O
while	O
the	O
MOTIS	O
assembler	O
ran	O
,	O
as	O
it	O
was	O
able	O
to	O
work	O
without	O
an	O
operating	O
system	O
.	O
</s>
