<s>
MIKBUG	B-Device
is	O
a	O
ROM	B-Device
monitor	B-Application
from	O
Motorola	O
for	O
the	O
Motorola	B-Device
6800	I-Device
8-bit	O
microprocessor	O
.	O
</s>
<s>
MIKBUG	B-Device
was	O
distributed	O
by	O
Motorola	O
in	O
1974	O
on	O
a	O
1K	O
ROM	B-Device
chip	I-Device
part	O
number	O
MCM6830L7	O
.	O
</s>
<s>
It	O
occupied	O
512bytes	O
on	O
the	O
chip	O
,	O
where	O
the	O
remainder	O
was	O
occupied	O
by	O
a	O
256byte	O
MINIBUG	B-Device
monitor	B-Application
—	O
a	O
stripped-down	O
version	O
of	O
MIKBUG	B-Device
—	O
and	O
a	O
256	O
byte	O
"	O
test	O
pattern	O
"	O
(	O
really	O
just	O
a	O
different	O
and	O
unused	O
revision	O
of	O
MINIBUG	B-Device
)	O
.	O
</s>
<s>
It	O
requires	O
128	O
bytes	O
of	O
random-access	B-Architecture
memory	I-Architecture
for	O
operation	O
.	O
</s>
<s>
Its	O
functionality	O
was	O
similar	O
to	O
other	O
monitors	O
of	O
the	O
early	O
microcomputer	O
era	O
,	O
such	O
as	O
the	O
Intel	O
MON-80	O
for	O
the	O
Intel	B-General_Concept
8080	I-General_Concept
.	O
</s>
<s>
MIKBUG	B-Device
is	O
initiated	O
when	O
power	O
is	O
first	O
applied	O
to	O
the	O
system	O
,	O
or	O
when	O
the	O
system	O
RESET	O
button	O
is	O
pressed	O
.	O
</s>
<s>
It	O
assumes	O
the	O
presence	O
of	O
a	O
terminal	B-General_Concept
that	O
the	O
user	O
will	O
use	O
to	O
issue	O
commands	O
.	O
</s>
<s>
Command	O
Function	O
L	O
Load	O
a	O
program	O
from	O
a	O
paper	O
tape	O
reader	O
on	O
the	O
attached	O
terminal	B-General_Concept
.	O
</s>
<s>
The	O
program	O
tapes	O
may	O
be	O
a	O
"	O
formatted	O
binary	O
object	O
tapes	O
or	O
MIKBUG	B-Device
punched	O
memory	O
dump	O
tapes	O
"	O
.	O
</s>
<s>
R	O
Display	O
the	O
contents	O
of	O
the	O
CPU	O
registers	B-General_Concept
.	O
</s>
<s>
Callable	O
functions	O
include	O
input	O
and	O
output	O
of	O
a	O
character	O
on	O
the	O
terminal	B-General_Concept
,	O
input	O
and	O
output	O
of	O
a	O
byte	O
in	O
hexadecimal	O
format	O
,	O
print	O
a	O
string	O
terminated	O
by	O
EOT	O
,	O
and	O
terminate	O
the	O
current	O
program	O
and	O
return	O
control	O
to	O
MIKBUG	B-Device
.	O
</s>
<s>
MIKBUG	B-Device
allows	O
the	O
user	O
to	O
install	O
an	O
interrupt	B-General_Concept
handler	I-General_Concept
using	O
the	O
M	O
command	O
to	O
specify	O
the	O
handler	O
address	O
.	O
</s>
<s>
Listings	O
of	O
MIKBUG	B-Device
and	O
MINIBUG	B-Device
monitors	O
are	O
available	O
online	O
.	O
</s>
