<s>
Minerva	B-Application
is	O
a	O
reimplementation	O
of	O
Sinclair	B-Operating_System
QDOS	I-Operating_System
,	O
the	O
built-in	O
operating	B-General_Concept
system	I-General_Concept
of	O
the	O
Sinclair	B-Device
QL	I-Device
line	O
of	O
personal	B-Device
computers	I-Device
.	O
</s>
<s>
Written	O
by	O
Laurence	O
Reeves	O
in	O
England	O
,	O
Minerva	B-Application
incorporates	O
many	O
bug	O
fixes	O
and	O
enhancements	O
to	O
both	O
QDOS	O
and	O
the	O
SuperBASIC	B-Language
programming	O
language	O
.	O
</s>
<s>
Later	O
versions	O
also	O
provide	O
the	O
ability	O
to	O
multi-task	B-Operating_System
several	O
instances	O
of	O
the	O
SuperBASIC	B-Language
interpreter	O
,	O
something	O
not	O
supported	O
by	O
QDOS	O
.	O
</s>
<s>
Minerva	B-Application
was	O
distributed	O
as	O
a	O
ROM	B-Device
chip	I-Device
on	O
a	O
daughterboard	O
which	O
replaces	O
the	O
QL	O
's	O
original	O
ROM	B-Device
chips	I-Device
.	O
</s>
<s>
A	O
Minerva	B-Application
Mk	O
.	O
</s>
<s>
As	O
of	O
version	O
1.89	O
,	O
the	O
Minerva	B-Application
source	O
code	O
is	O
licensed	O
under	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
.	O
</s>
<s>
Other	O
reimplementations	O
of	O
QDOS	O
include	O
SMS2	O
and	O
SMSQ/E	B-Operating_System
.	O
</s>
