<s>
Ralf	B-Device
Brown	I-Device
's	I-Device
Interrupt	I-Device
List	I-Device
(	O
aka	O
RBIL	B-Device
,	O
x86	B-Device
Interrupt	I-Device
List	I-Device
,	O
MS-DOS	B-Device
Interrupt	I-Device
List	I-Device
or	O
INTER	O
)	O
is	O
a	O
comprehensive	O
list	O
of	O
interrupts	B-Application
,	O
calls	O
,	O
hooks	O
,	O
interfaces	B-Application
,	O
data	B-General_Concept
structures	I-General_Concept
,	O
CMOS	B-Device
settings	I-Device
,	O
memory	B-Architecture
and	O
port	B-Protocol
addresses	O
,	O
as	O
well	O
as	O
processor	B-Language
opcodes	I-Language
and	O
special	B-Device
function	I-Device
registers	I-Device
for	O
x86	B-Operating_System
machines	O
from	O
the	O
1981	O
IBM	B-Device
PC	I-Device
up	O
to	O
2000	O
,	O
most	O
of	O
it	O
still	O
applying	O
to	O
IBM	B-Device
PC	I-Device
compatibles	O
today	O
.	O
</s>
<s>
The	O
list	O
covers	O
operating	B-General_Concept
systems	I-General_Concept
,	O
device	B-Application
drivers	I-Application
,	O
and	O
application	O
software	O
;	O
both	O
documented	O
and	O
undocumented	B-General_Concept
information	O
including	O
bugs	B-Error_Name
,	O
incompatibilities	O
,	O
shortcomings	O
,	O
and	O
workarounds	O
,	O
with	O
version	O
,	O
locale	O
,	O
and	O
date	O
information	O
,	O
often	O
at	O
a	O
detail	O
level	O
far	O
beyond	O
that	O
found	O
in	O
the	O
contemporary	O
literature	O
.	O
</s>
<s>
A	O
large	O
part	O
of	O
it	O
covers	O
system	O
BIOSes	O
and	O
internals	O
of	O
operating	B-General_Concept
systems	I-General_Concept
such	O
as	O
DOS	B-Device
,	O
OS/2	B-Application
,	O
and	O
Windows	B-Application
,	O
as	O
well	O
as	O
their	O
interactions	O
.	O
</s>
<s>
It	O
has	O
been	O
a	O
widely	O
used	O
resource	O
by	O
IBM	B-Device
PC	I-Device
system	O
developers	O
,	O
analysts	O
,	O
as	O
well	O
as	O
application	O
programmers	O
in	O
the	O
pre-Windows	O
era	O
.	O
</s>
<s>
As	O
such	O
the	O
compilation	O
has	O
proven	O
to	O
be	O
an	O
important	O
resource	O
in	O
developing	O
various	O
closed	O
and	O
open	O
source	O
operating	B-General_Concept
systems	I-General_Concept
,	O
including	O
Linux	B-Application
and	O
FreeDOS	B-Application
.	O
</s>
<s>
Today	O
it	O
is	O
still	O
used	O
as	O
a	O
reference	O
to	O
BIOS	B-Device
calls	I-Device
and	O
to	O
develop	O
programs	O
for	O
DOS	B-Device
as	O
well	O
as	O
other	O
system-level	O
software	O
.	O
</s>
<s>
The	O
original	O
list	O
was	O
created	O
in	O
January	O
1985	O
by	O
Janet	O
Jack	O
and	O
others	O
,	O
and	O
,	O
named	O
"	O
Interrupt	B-Device
List	I-Device
for	I-Device
MS-DOS	I-Device
"	O
,	O
it	O
was	O
subsequently	O
maintained	O
and	O
mailed	O
to	O
requestors	O
on	O
Usenet	B-Application
by	O
Ross	O
M	O
.	O
Greenberg	O
until	O
1986	O
.	O
</s>
<s>
Since	O
October	O
1987	O
it	O
is	O
maintained	O
by	O
Ralf	B-Device
D	I-Device
.	I-Device
Brown	I-Device
,	O
a	O
researcher	O
at	O
Carnegie	O
Mellon	O
University	O
's	O
Language	B-General_Concept
Technologies	I-General_Concept
Institute	I-General_Concept
.	O
</s>
<s>
Information	O
from	O
several	O
other	O
interrupt	B-Application
listings	O
was	O
merged	O
into	O
the	O
list	O
in	O
order	O
to	O
establish	O
one	O
comprehensive	O
reference	O
compilation	O
.	O
</s>
<s>
The	O
project	O
was	O
also	O
expanded	O
to	O
include	O
other	O
PC	O
development-related	O
information	O
and	O
therefore	O
absorbed	O
a	O
number	O
of	O
independently	O
maintained	O
lists	O
on	O
PC	O
I/O	O
ports	O
(	O
by	O
Wim	O
Osterholt	O
and	O
Matthias	O
R	O
.	O
Paul	O
)	O
,	O
BIOS	B-Operating_System
CMOS	B-Device
memory	I-Device
contents	O
(	O
by	O
Atley	O
Padgett	O
Peterson	O
)	O
,	O
processor	B-Language
opcodes	I-Language
(	O
by	O
Alex	O
V	O
.	O
Potemkin	O
)	O
and	O
bugs	B-Error_Name
(	O
by	O
Harald	O
Feldmann	O
)	O
.	O
</s>
<s>
Originally	O
,	O
the	O
list	O
was	O
distributed	O
in	O
an	O
archive	O
named	O
INTERRUP	B-Device
in	O
various	O
compression	O
formats	O
as	O
well	O
as	O
in	O
the	O
form	O
of	O
diffs	B-Application
.	O
</s>
<s>
In	O
mid	O
1989	O
the	O
distribution	O
settled	O
to	O
only	O
use	O
ZIP	B-Application
compression	O
.	O
</s>
<s>
When	O
the	O
archive	O
reached	O
the	O
size	O
of	O
a	O
360KB	O
floppy	B-Device
in	O
June	O
1991	O
,	O
the	O
distribution	O
split	O
into	O
several	O
files	O
following	O
an	O
INTERrrp.ZIP	O
naming	O
scheme	O
(	O
with	O
rr	O
=	O
revision	O
starting	O
with	O
26	O
for	O
version	O
91.3	O
,	O
and	O
p	O
=	O
part	O
indicator	O
of	O
the	O
package	O
starting	O
with	O
letter	O
A	O
)	O
.	O
</s>
<s>
Officially	O
named	O
"	O
MS-DOS	B-Device
Interrupt	I-Device
List	I-Device
"	O
and	O
"	O
x86	B-Device
Interrupt	I-Device
List	I-Device
"	O
(	O
abbreviated	O
as	O
"	O
INTER	O
"	O
)	O
by	O
its	O
maintainer	O
,	O
the	O
community	O
coined	O
the	O
unofficial	O
name	O
"	O
Ralf	B-Device
Brown	I-Device
's	I-Device
Interrupt	I-Device
List	I-Device
"	O
(	O
abbreviated	O
as	O
"	O
RBIL	B-Device
"	O
)	O
in	O
the	O
1990s	O
.	O
</s>
<s>
The	O
publication	O
is	O
currently	O
at	O
revision	O
61	O
as	O
of	O
17	O
July	O
2000	O
with	O
almost	O
8MB	O
of	O
ASCII	B-Protocol
text	I-Protocol
including	O
close	O
to	O
entries	O
plus	O
about	O
tables	O
,	O
fully	O
cross	O
linked	O
,	O
which	O
would	O
result	O
in	O
more	O
than	O
3700	O
pages	O
(	O
at	O
60	O
lines	O
per	O
page	O
)	O
of	O
condensed	O
information	O
when	O
printed	O
.	O
</s>
<s>
Of	O
this	O
,	O
the	O
interrupt	B-Device
list	I-Device
itself	O
makes	O
up	O
some	O
5.5MB	O
for	O
more	O
than	O
2500	O
pages	O
printed	O
.	O
</s>
<s>
While	O
the	O
project	O
is	O
not	O
officially	O
abandoned	O
and	O
the	O
website	O
is	O
still	O
maintained	O
(	O
as	O
of	O
2022	O
)	O
,	O
new	O
releases	O
have	O
not	O
been	O
forthcoming	O
for	O
a	O
very	O
long	O
time	O
,	O
despite	O
the	O
fact	O
that	O
information	O
was	O
still	O
pending	O
for	O
release	O
even	O
before	O
the	O
INTER61	B-Device
release	O
in	O
2000	O
.	O
</s>
<s>
New	O
releases	O
were	O
planned	O
for	O
at	O
several	O
times	O
in	O
2001	O
and	O
2002	O
,	O
but	O
when	O
they	O
did	O
not	O
materialize	O
,	O
portions	O
of	O
the	O
new	O
information	O
on	O
DOS	B-Device
and	O
PC	O
internals	O
provided	O
by	O
Paul	O
were	O
circulated	O
in	O
preliminary	O
form	O
in	O
the	O
development	O
community	O
for	O
peer-review	O
and	O
to	O
assist	O
in	O
operating	B-General_Concept
system	I-General_Concept
development	O
.	O
</s>
