<s>
Dogfight	B-Device
is	O
an	O
aerial	O
combat	O
video	O
game	O
written	O
by	O
Bill	O
Basham	O
for	O
the	O
Apple	B-Device
II	I-Device
and	O
published	O
by	O
Micro	O
Lab	O
in	O
1980	O
.	O
</s>
<s>
The	O
game	O
is	O
a	O
clone	O
of	O
Atari	O
,	O
Inc.	O
'	O
s	O
1975	O
arcade	O
game	O
Jet	B-Application
Fighter	I-Application
.	O
</s>
<s>
Since	O
all	O
input	O
is	O
via	O
the	O
single	O
built-in	O
keyboard	O
of	O
the	O
Apple	B-Device
II	I-Device
,	O
this	O
involves	O
the	O
players	O
crowding	O
up	O
against	O
each	O
other	O
to	O
reach	O
their	O
3	O
keys	O
.	O
</s>
<s>
He	O
began	O
programming	O
the	O
Apple	B-Device
II	I-Device
in	O
machine	B-Language
language	I-Language
and	O
wanted	O
to	O
explore	O
animation	O
.	O
</s>
<s>
He	O
was	O
able	O
to	O
smoothly	O
animate	O
up	O
to	O
56	O
items	O
on	O
the	O
screen	O
at	O
the	O
same	O
time	O
,	O
optimized	O
with	O
a	O
lookup	B-Data_Structure
table	I-Data_Structure
.	O
</s>
<s>
Dogfight	B-Device
was	O
number	O
6	O
on	O
Softalk'''s	O
"	O
The	O
Top	O
Thirty	O
"	O
list	O
in	O
the	O
February	O
1981	O
issue	O
.	O
</s>
<s>
Programmer	O
Bill	O
Basham	O
:	O
"	O
After	O
writing	O
Dogfight	B-Device
and	O
publishing	O
it	O
through	O
Microlab	O
,	O
I	O
went	O
on	O
to	O
write	O
Diversi-DOS	O
.	O
</s>
<s>
Microlab	O
was	O
n't	O
selling	O
Dogfight	B-Device
by	O
then	O
,	O
so	O
I	O
decided	O
to	O
include	O
it	O
as	O
a	O
freebee	O
with	O
Diversi-DOS	O
"	O
.Dogfight	O
II''	O
is	O
a	O
1981	O
update	O
with	O
support	O
for	O
the	O
Joyport	O
device	O
and	O
two	O
new	O
game	O
modes	O
:	O
multiplayer	O
and	O
anti-aircraft	O
gunner	O
.	O
</s>
