Motorola EXORdisk II User Manual page 374

OTHER SYSTEM FUNCTIONS
27.4 -- Diskette File Functions
B
=
0 indicates that no
errors occurred
(norma 1 'return
>.
B
=
ISRIB
indicates that the file
had an
existing Retrieval Information Block
that ~as invalid (see section
24.2).
B
=
rSFSPC
indicates that insufficient
space is available to accommodate the
allocation requirements. If S1Z
contained
a
non-zero value at the
entry to .ALLOe, this
error
indicates
that the specific amount
of
space
requested could not be allocated.
This can occur for two reasons.
First, if the fi Ie is segmented ("C"
of FDF set to
zero),
the number
of
sectors specified in SIZ could not be
allocated in a single,. contiguous
block antJUlhere. Second, if the file
is contiguous
(lie"
of FDF set to
one),
the
number of sectors specified
in SIZ could not be allocated
contiguously Ulith the existing space.
If SIZ contained
a zero
value, this
error
indicates that no space is
available at all on the diskette, or
that no space is available that is
contiguous to the existing space,
depending on
"C"
being zero
or
one in
FDF.
If the default of
32
clusters
(SIZ
=
0)
cannot be allocated,
.ALLOe
will allocate whatever space it can
without generating an error. If SIZ
is non-z ero, an errol' UJi 11 be
generated if the exact number
of
sectors cannot be allocated.
B
=
ISSSPC indicates that the Tile's
Ret~ieval
Information Block could not
accommodate the required number of
SDWs Tor the requested allocation.
This ~rror occurs if
a
file is very
fragmented.
X is unchanged.
C
=
0 if no errors occurred (13
=
0), The
remainder
oT
CC is indeterminate.
C
=
1
if an error occurred
(B
not
zero).
The remainder of CC is indeterminate.
The
OFT
is unchanged
if an
error
Page 27-27