<s>
51-FORTH	B-Language
is	O
an	O
implementation	O
of	O
the	O
Forth	B-Application
programming	I-Application
language	I-Application
for	O
the	O
Intel	B-Architecture
8051	I-Architecture
microcontroller	B-Architecture
.	O
</s>
<s>
The	O
original	O
51forth.zip	O
package	O
is	O
available	O
from	O
many	O
archive	O
sites	O
,	O
along	O
with	O
several	O
other	O
implementations	O
of	O
Forth	O
.	O
</s>
<s>
This	O
implementation	O
is	O
subroutine-threaded	O
,	O
with	O
about	O
20	O
words	O
written	O
in	O
assembly	B-Language
language	I-Language
,	O
and	O
the	O
complete	O
system	O
occupying	O
a	O
total	O
of	O
about	O
8K	O
of	O
RAM	O
.	O
</s>
<s>
It	O
was	O
cross-developed	O
from	O
a	O
VAX	B-Device
to	O
an	O
RTX2000	B-Application
Forth	O
system	O
connected	O
to	O
dual-ported	B-General_Concept
RAM	I-General_Concept
accessible	O
to	O
the	O
microcontroller	B-Architecture
.	O
</s>
