<s>
Galaksija	B-Device
Plus	I-Device
was	O
an	O
improved	O
version	O
of	O
Galaksija	B-Device
,	O
with	O
256x208	O
monochrome	O
graphics	O
mode	O
,	O
3-voice	O
sound	O
based	O
on	O
AY-3-8910	B-Device
and	O
48	O
KiB	O
RAM	B-Architecture
.	O
</s>
<s>
The	O
hardware	O
of	O
Galaksija	B-Device
Plus	I-Device
was	O
created	O
by	O
Nenad	O
Dunjić	O
and	O
software	O
by	O
Milan	O
Tadić	O
in	O
1985	O
.	O
</s>
<s>
The	O
goal	O
was	O
to	O
enhance	O
original	O
Galaksija	B-Device
while	O
keeping	O
the	O
original	O
goal	O
of	O
keeping	O
things	O
inexpensive	O
and	O
simple	O
for	O
the	O
constructor	O
.	O
</s>
<s>
Continuing	O
to	O
use	O
Static	B-Architecture
RAM	I-Architecture
in	O
Galaksija	B-Device
Plus	I-Device
would	O
have	O
significantly	O
increased	O
the	O
cost	O
,	O
so	O
designers	O
decided	O
to	O
switch	O
to	O
dynamic	O
,	O
built	O
out	O
of	O
4416	O
chips	O
.	O
</s>
<s>
Larger	O
memory	O
prompted	O
the	O
need	O
for	O
faster	O
cassette	B-Device
tape	I-Device
data	B-General_Concept
recording	I-General_Concept
rate	O
,	O
which	O
was	O
increased	O
to	O
1200	O
bit/s	O
by	O
modifying	O
another	O
piece	O
of	O
firmware	B-Application
.	O
</s>
<s>
Having	O
enough	O
memory	O
to	O
store	O
the	O
bit	O
map	O
and	O
since	O
Galaksija	B-Device
's	O
own	O
CPU	B-General_Concept
directly	O
drove	O
the	O
video	B-Application
signal	I-Application
,	O
video	O
generation	O
hardware	O
did	O
not	O
have	O
to	O
change	O
significantly	O
.	O
</s>
<s>
Video	O
generation	O
routine	O
was	O
modified	O
to	O
take	O
the	O
raw	O
video	O
data	O
from	O
the	O
new	O
video	O
memory	O
instead	O
of	O
relying	O
on	O
character	O
set	O
ROMs	B-Device
.	O
</s>
<s>
Some	O
games	O
for	O
original	O
Galaksija	B-Device
used	O
to	O
do	O
a	O
similar	O
trick	O
,	O
albeit	O
in	O
a	O
limited	O
fashion	O
due	O
to	O
restrictive	O
memory	O
capacity	O
.	O
</s>
<s>
The	O
final	O
hardware	O
upgrade	O
was	O
addition	O
of	O
AY-3-8910	B-Device
sound-generation	O
chip	O
,	O
providing	O
contemporary-standard	O
sound	O
to	O
Galaksija	B-Device
without	O
the	O
need	O
to	O
use	O
tricks	O
such	O
as	O
with	O
the	O
cassette	B-Device
tape	I-Device
port	O
(	O
see	O
original	O
Galaksija	B-Device
)	O
.	O
</s>
<s>
Galaksija	B-Device
Plus	I-Device
featured	O
new	O
software	O
additions	O
:	O
Graphic	O
primitives	O
in	O
BASIC	O
language	O
-	O
commands	O
to	O
draw	O
lines	O
,	O
boxes	O
,	O
circles	O
,	O
other	O
graphic	O
primitives	O
as	O
well	O
as	O
drawing	O
text	O
on	O
graphical	O
screen	O
with	O
different	O
font	O
.	O
</s>
<s>
Additional	O
firmware	B-Application
(	O
ROM	B-Device
C	O
)	O
also	O
featured	O
Full	O
Screen	O
Source	O
Editor	O
and	O
soft	O
scrolling	O
.	O
</s>
<s>
Galaksija	B-Device
Plus	I-Device
was	O
manufactured	O
by	O
Institute	O
for	O
School	O
Books	O
and	O
Teaching	O
Aids	O
for	O
an	O
announced	O
price	O
of	O
140,000	O
dinars	O
.	O
</s>
<s>
ROMs	B-Device
:	O
</s>
<s>
Original	O
ROM	B-Device
"	O
B	O
"	O
or	O
"	O
2	O
"	O
-	O
4	O
KB	O
(	O
in	O
2764	B-General_Concept
EPROM	I-General_Concept
together	O
with	O
ROM	B-Device
"	O
A	O
"	O
)	O
-	O
additional	O
Galaksija	B-Language
BASIC	I-Language
commands	O
,	O
assembler	O
,	O
Machine	B-General_Concept
code	I-General_Concept
monitor	I-General_Concept
,	O
etc	O
.	O
</s>
<s>
Additional	O
ROM	B-Device
"	O
C	O
"	O
or	O
"	O
3	O
"	O
-	O
2	O
KB	O
(	O
in	O
2716	B-General_Concept
EPROM	I-General_Concept
)	O
-	O
additional	O
firmware	B-Application
specific	O
to	O
Galaksija	B-Device
Plus	I-Device
(	O
e.g.	O
</s>
<s>
Sound	O
:	O
3-channels	O
+	O
white	O
noise	O
provided	O
by	O
AY-3-8912	B-Device
.	O
</s>
<s>
I/O	B-Architecture
ports	I-Architecture
:	O
44-pin	O
Edge	O
connector	O
with	O
Z80	B-General_Concept
Bus	O
,	O
tape	O
(	O
DIN	B-Architecture
connector	I-Architecture
)	O
,	O
monochrome	O
video	O
out	O
(	O
PAL	B-Language
timings	O
,	O
DIN	B-Architecture
connector	I-Architecture
)	O
,	O
UHF	O
TV	B-Operating_System
out	O
(	O
RCA	B-Protocol
connector	I-Protocol
)	O
and	O
two	O
8-bit	O
parallel	B-Device
ports	I-Device
(	O
e.g.	O
</s>
