Radio Shack TRS-80 Owner's Manual page 5

Model
III Users
XFERSYS UTILITY ON TRSDOS
1.3
The Model III diskette
in
this package contains
a
NEW
version of
TRSDOS which
is
not compatible with OLD versions
of
TRSDOS.
OLD TRSDOS diskettes
to be used under the NEW TRSDOS MUST
be
XFERSYSed before
use.
Once XFERSYSed,
an
OLD TRSDOS
diskette becomes
a
NEW TRSDOS diskette and should
not be
used with OLD TRSDOS again.
If
you started with
an
OLD
system or data diskette, the XFERSYSed diskette will
be
a
NEW system
or data
diskette respectively.
OLD diskettes used under NEW TRSDOS without XFERSYSing, may
cause extraneous information
to be read at the end
of
files,
giving
a
false End-of-File
(EOF) indication. Some
programs will not function properly under these conditions.
NEW diskettes used under OLD TRSDOS, may not access all
data and/or NEW programs may not run correctly.
If
you need
to
use the XFERSYS utility, see the TRSDOS
section
of your
TRS-80 Model
III Disk System Owner's
Manual.
Note: When changing from one TRSDOS to the other, you
MUST
press
the
RESET button each time
the diskette
in
Drive
is
changed. You may also XFERSYS onto
a
NEW
data disk.
If
this
is
done, all system files
of the
system diskette will
be
moved onto
the data diskette.
RADIO SHACK APPLICATION PROGRAMS WHICH WERE DELIVERED
ON AN
OLD TRSDOS DISKETTE SHOULD
NOT BE XFERSYSed.
OLD:
TRSDOS
1.1
and
1.2.
NEW:
TRSDOS
1.3
file:
A collection
of
information stored
as
one
named unit
in
the directory.
program: A file which causes the computer
to
perform
a
function.
data: Information contained
in
a
file
which
is
used
by
a
program.
system diskette: A diskette containing TRSDOS. When
this
diskette
is
placed
in
Drive and
the
RESET button
is
pressed, TRSDOS will begin
to run.
data diskette:
A diskette which does not contain TRSDOS.
If
this diskette
is
placed
in
Drive
and
RESET
is
pressed, the screen will clear
and "Not
a
SYSTEM Disk" will be displayed.
XFERSYS:
A
program contained
on the
TRSDOS
1.3
diskette.
8759117-681