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2.
After
one
of
the error
messages
listed
in
Appendix
A
is
displayed,
insert into
Drive
a
TRSDQS
6,
LDOS
5.1
,
or
TRSDQS
1
.3
dick
ette that
contains the
file
MODELMII.
3.
Press
RESET;
than, within three
seconds,
press (0)
and
a
lower-case
(E
1
-
Pressing
Q3)
tells
the
hardware
to run the
Model
III
oper-
ating
system
Pressing
©
tells
TRSDOS
to
prompt you
wrien
it
is
ready
lor
the disk
you
want
to
use.
4.
When
the
prompt
to
swap
diskettes
is
dis-
played,
remove
the diskette
from
Drive
and
insert
the
Model
III
diskette
you want
to
use.
5.
Press
fEHTER
)
After
doing
this
procedure
once, you
need
not
do
it
again unless
you
turn
off
lie
Model
4P
or
you
run
a Model 4
operating system,
such as
TRSDOS
6.1.1
orCP/MMn
any
case,
your
Model
4P
will
Inform
you
if
you need
to
perform
the
above
procedure.
Running Model
III
Programs.
If
your
Model
III
application
program
diskette
contains
the
MODELA1II
file,
simply
insert
the diskette
and
press
RESET.
If
the
file
is
not
on
the
diskette*
either
M)
copy
the
file
to
the diskette
as
described
above
or
125
use
the
2-disk startup
procedure described
above.
To
run
the application
program,
follow the
instructions
in
your
application
program man-
ual.
The
few
differences
you
will
notice
are:
•
An
application
program
running
under
TRSOOS
tension
1.3
can
display
§4
charac-
ters
on
16
lines
A
program
running
under
THSDOS
Version
6.1.
1
can
display
60
char-
acters
on
24
lines.
*
TRSDOS
Version
1.3
and
LDOS
5
1
com-
mands
work
slightly differently
from
TRSDOS
Version
6.1.1
commands.
Follow the
instruc-
tions
in
your
application
program
manual,
and
you'll
have
nrj
problems.
Note:
Some
Model
III
packages
are
distributed
on
disks
that
are
in
a non-
CP'M*
is
a
registered
iradamafh
at Digital
Research
41
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