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FUNCl'IOO
StM1ARy
FUNCl'ICN
'IEMPIA'IE
Operator
ID: ID
Contents
Function
Request
Facility
1------------------------1
results
0
through
9 1
reserved
1
1------------------------1
operand
6 1
reserved
1------------------------1
oper
and 5 1
reserved
. 1
1------------------------1
operand
4 1
reserved
1------------------------1
oper
and 3 1
reserved
1------------------------1
oper
and 2 1
reserved
1
1------------------------1
operarrl
I 1
reserved
1------------------------1
oper
and 0 1
reserved
1------------------------1
Hex
Byte
Offset
20H-33H
lEH
ICH
lAH
ISH
16H
14H
12H
IP
function
code 1
OXXH
(FUNCl'ICN
NAME)
lOH
1----
__
------------------1
. .
function
state
1
reserved
1
OEH
1------------------------1
process
selection
index
1
PRO:ESS
INDEX
OCH
1------------------------1
Note:
Required
operands
and
available
results
are
indicated
by
capital
letters.
Other
areas
are
marked
reserved.
The
IP
function
cxx1e
must
be
written
into
the
function
request
facility
last,
i.e.
only
after
all
operands
are
provided.
The
function
code
occupies
only
location
IOH. Byte
location
IIH
is
reserved.
The
process
selection
index
field
is
required
on
all
IP
function
requests.
This
value
(an
access
.
descriptor
displacement)
is
used
as
an
byte
offset
into
the
process
selection
list
of
the
IP
processor
access
segment. For example,
the
process
selection
index
for
process
number 5
is
OOOOOOOOOOOIOIOOB.
Since
it
is
not
modified
by
function
execution,
it
need
not
be
rewritten
if
a
new
function
is
to
be
executed
in
the
same
process
environment
as
the
previous
function.
The
function
state
field,
shown
as
reserved
in
all
function
surrmaries,
may
be
examined
after
the
IP
receives
an
interrupt
or
it
may
be
polled.
The
function
state
field
should
be
set
to
zero
before
a
function
code
is
deposited.
Interrupts
for
successful
function
completion
may
be
selectively
disabled.