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ERROR MESSAGES
28. 2 -- Standard Command Errors
**
28 DEVICE NAME NOT FOUND
A
device name was specified which is not defined
as an MDOS-supported device.
This usually occurs
if the device name is mistyped.
The valid device
names ror the I/O functions are CN, CR,
CP,
DK,
and
LP.
If
a logical unit number is
speci~ied
for a proper device
that
is
greater
than
the
number
OT
units
present
rOT'
that device,
then
th
i
s err
OT'
may
a
1 so
0<: <: UT'T'
(
e.
g. ,
sp ec
i
~y
i
ng
units
greater
than
3
~or
ror diSKette drives or
units greater than 0 for other devices).
The COpy command (Chapter 7) will also accept the
device
names
HR and UD.
**
29 INVALID LOGICAL UNIT NUMBER
A
logical
unit
number
was
specified
that is
invalid.
If
the device is a diskette,
the
valid
logical unit numbers are zero through three.
For
non-diskette supported. devices only logical. unit
numbers of zero are allowed.
**
30 INVALID EXECUTION ADDRESS
The
starting execution
address
or'a
program
in
a
memor~-image
file is less than the lowest address
or
greater
than the highest address loaded into
by
the program.
Th
is
ind
icates
a
RIB
er"ror.
The
REPAIR
command
(Chapter
22)
should be used to
correct the error.
The
EXBIN
command
(Ch~pter
14) uses this
message
to
rerer
to
an
illegal
specification
of
an
e~ecution
address in the options field
(i.
e.
I
a
non-hexadecimal
digit).
**
31 INVALID DEVICE
A
valid
device
name
was
used
in
an illegal
can t ext.
For e x amp 1 e ,
the d e vic e
LP
can not
b e
used in the context
o~
an input device.
The name
DK cannot be used
~
the command line of
any
of
the
MDOS
commands.
The
COpy
command does not
allow the
eN
device
to
be
used
as
an
input
specification.
This
message
can
also
perform logical
sector
.device,
or an attempt to
I/O
on
a
device
that
non-file rormat mode.
indicate
an attempt to
I/O
on
a
non-diskette
perform non-fi le 'format
does
not
support
the
Page
28-13
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