<s>
The	O
Super	B-Language
Expander	I-Language
64	I-Language
was	O
a	O
cartridge-based	O
extension	O
to	O
the	O
built	O
in	O
BASIC	O
V2	O
interpreter	O
of	O
the	O
then	O
immensely	O
popular	O
Commodore	O
64	O
home	O
computer	O
:	O
Since	O
the	O
64	O
was	O
developed	O
in	O
a	O
hurry	O
,	O
Commodore	O
simply	O
adapted	O
the	O
BASIC	O
V2	O
from	O
the	O
PET	B-Device
line	O
of	O
computers	O
and	O
the	O
VIC	B-Device
20	I-Device
for	O
their	O
new	O
machine	O
,	O
with	O
no	O
support	O
for	O
the	O
advanced	O
sound	O
and	O
graphics	O
capabilities	O
of	O
the	O
64	O
.	O
</s>
<s>
To	O
make	O
use	O
of	O
the	O
advanced	O
hardware	O
,	O
BASIC	O
programmers	O
needed	O
to	O
memorize	O
hardware	O
addresses	O
and	O
"	O
POKE	B-Language
"	O
commands	O
directly	O
to	O
the	O
memory-mapped	O
devices	O
.	O
</s>
<s>
Later	O
8-bit	O
systems	O
from	O
Commodore	O
had	O
BASIC	O
interpreters	O
enhanced	O
to	O
support	O
the	O
special	O
hardware	O
,	O
and	O
with	O
the	O
Super	B-Language
Expander	I-Language
64	I-Language
cartridge	O
,	O
Commodore	O
64	O
users	O
could	O
"	O
retrofit	O
"	O
their	O
machine	O
with	O
a	O
BASIC	O
to	O
match	O
the	O
hardware	O
capabilities	O
.	O
</s>
