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OTHER
SYSTEM
FUNCTIONS
EXIT CONDITIONS:
A
=
B
B
=
27. 5 --
Othe~
Functions
This packet has the
follo~ing
format:
o
2
Address o-f
input buffer
Address of
standard
file name area
I"
I
Since .PFNAM is designed to be called
more
than
once
to extract multiple
file name
or
device
specifications
~rom
a single input
buffeT'1
the
~irst
pointer of the file name
packetl
or
scan
pointer,
must be
pointing to a
character
~hich
previously terminated
the
s c
an.
Wh
en.
P FNAM
i s calI edt h
e
first
time,
special
care
must
be
taken
to
ensure that the first bqte
of
the
input
buffer
is
a
valid
te~minator
(this
is
automatically
handled
by
the
MDOS
command
interpreter
in
using the MDOS command
line
bUTTer).
This
character
is
normally a space or a commai
however,
anq
other
valid
terminator
will
suffice.
The
second
pointer of the file name
packet
defines
where
the
standard
file name is to be placed.
This
area
must
be
eleven
bytes
long.
The
fil'st
b~te
~ill
contain
the logical unit
number.
The next
eight
bytes
lJJill
contain
the
device name
o~
the file
name, and the
last
two
bytes
will
contain the
SUTTix.
The
chal'acter
that
terminated
the
scan.
contains
the
return
status.
The
following
-return
statuses
are
defined:
0
indicates
that
a standard MDOS file
name . s p'e c
i
f
i
cat ian was found .
Bit
0
=
1
indicates
that
a
family
indicator
was found in the rile name.
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