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ERROR MESSAGES
28.2 -- Standard Command
Er~ors
**
17 INVALID DATA TRANSFER TYPE
An attempt was
made
to read from an output device
0,..
f
i
1 e}
to Ulr
i
t e t
0
ani n put d e vic e
0
r
f
i
1 e, to
perform record
1/0
with the logical
sector
mode
set,
to
perform
logical
sector
lID
with the
record
mode
set,
to
open
a
non-input/output
device
in
the
update
mode,
or
to
open
a
non-diskette device in the update mode.
**
18 DEVICE ALREADY RESERVED
Bit "R" of the IOCLUN
b~te
in an IOCB was set
to
one when
the·. RESRV
system function was
called.
19 DEVICE NOT
Bit
"R" of the IOCLUN bqte in an IOCB
~as
set to
zero when the . OPEN or
.RELES
system
functions
were ca
11
ed.
**
20
INVALID
OPEN/CLOSED
FLAG
Bit
"0" of the IDCDTT byte in an lOeB was set to
one when
the
. CLOSEJ
.
GETRC,
.GETLS,
.
PUTRCJ
.PUTLS,
. REWND,
or
. RELES
system function was
called,
or bit
"0"
of the IOCDTT byte was set
to
zero when the. OPEN system function was called.
**
21 END OF FILE
An
end-or-file
record
was
read
from
a·
non-diskette device or an
attempt
was
made
to
read beyond the
logica~
end-of-file in a diskette
file.
Attempting to read from
a
diskette
file
after
the
end-or-file
error
has occurred will
result in the same
e~ror.
Reading from a
device
after
the
end-or-file error occurred mayor may
not result in the same error,
depending
on
what
caused
the
initial
end-of-file.
condition.
Reading a
record
from
a
diskette
rile
which
contains
no carriage returns will result in this
error.
**
22 BUFFER OVERFLOW
An
attempt was made to read a
record
which
was
larger
than
the
data
buPrer
provided
Por
the
record.
The overrlow or the
~ecord
is
truncated.
During the CHAIN
command's
execution
phaseJ
a
sup
P 1 i
e
d
. i
n put
res
p
0
n s e e
x
c e e
d
e d t
h
e
rna
x i
mum
number
Or
characters
acceptable
for
the
input
request.
Page
28-11
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