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Alphabetic
Shift (Code:
1)
The
1
-punch
is
the
alpha-shift
code.
When
the
machine
is
operating
in
program
levels 1-6,
the
combination keyboard
is
normally
in
numeric
shift.
Therefore,
to
punch any
alphabetic characters or
special
characters that
are part
of
the alphabetic
shift,
the
keyboard
functions
must be
shifted
to
the
correct
mode. The
shifting
is
accomplished
by
punching
the
alpha-shift
code,
for
the
program
level
being
used,
into
each
column
of
the
program
card
that
corresponds
to the
column
of
the card being
punched
with
the alphabetic information.
Every
column
to
be
punched
as
alphabetic
must
contain an
alpha-shift
code
in
the
program
card,
or
ALPHA
must
be manually held
pressed
for that
column.
Field definition
does not extend
alphabetic
shift.
Left-zero Insertion
(Code:
3)
Punch
Mode:No
program code
is
needed, except
normal
field
definition.
Verify
Mode:
To
program
a
field
for left-zero insertion,
punch
a
3 into the
first
(high-order)
column and
in
the
last
(low-order)
column of
the
left-zero
field.
Punch
the
remaining
columns
of
the
field
with
field
definition
punches (numeric
12),
including the units
position.
For
a
detailed description
of
program
codes
2
and 4
through
8, see
Section
7,
"Special Features."
Program code
9
is
not
used.
Program Card
Preparation
Program
cards
are
initially
prepared
by
punching
them
as
data
cards,
using
program
level
(80
single-position
fields,
alphabetic
shift)
or
program
levels
1-6
(80
single-position
fields,
numeric
shift).
See
"Punch
a
Record/Card"
in
Section
3.
Note
that
an
11
-punch
(dash)
is
an
alphabetic
character
on
the
IBM
129.
(The numeric
position of the
key
is
—
LZ.) After punching,
the
card
is
stored
in
the
appropriate
program
storage
level
via
a store
program
operation.
After being
stored, the
program
can be
re-
peatedly
punched
out
into additional
cards
by
a
program
punchout
operation.
See
"Punchout
(Stored
Program)"
in
Section
3-
Inserting
Cards Manually
In
certain
circumstances,
it
is
desirable
to
insert
cards
manually,
one
at
a
time, to
make
over a
damaged
card, or
to
correct
an
error.
Also,
when
an
individual
card
accompanies each
original
document, manual
insertion
may
be
necessary.
A
single
card
may
be
inserted
in
the
hopper,
or
may
be manually
inserted directly in the
card
bed
(through
the
upper and lower
card guides)
at
the
punch
station
or the read
station as follows:
Read
Station (Print-Punch
Model):
Insert
the card
under
the appropriate guides
until
the
left
card edge
is
halfway
between
the
card
roller
and
the
case,
as
shown
in
Figure
7
This
is
the
pre-register
position for that
station.
Left
Edge
of
Card
Figure
7.
Manual
Insertion
of
Card
at
Read
Station
(Model
2,
Print-Punch)
Punch
Station
(Combined Punch/Read
Station,
for
Verify
Models
1-3):
Insert
the card
under
the appropriate guides
until
the entire
card
is
flat
within the card
bed
opening;
slide
the
card
under
the pusher guide to the
right
as
far as
it
will
go.
This
is
the
pre-register
position for that
station.
Note: Data
or
program
cards
to
be
read
in
may
be
manually
inserted
at
the
master
station,
as
shown
in
Figure
7,
or
they
may
be
inserted
at
the
punch
station.
Pressing
READ
causes correct read-in
from
either location.
Program
cards
and
data
cards
may
also
be
placed
in
the
hopper,
in
punch mode, and
fed
one
cycle
to
the
pre-register
position,
at
which
time the
desired read-in or
store
program
procedure
may
be
done.
PUNCHING
The
IBM
129
was
designed
to
provide the
ease
and
feel
of
the
IBM
29
,
but with
the
marked improvement
of
storing
data
for
possible
correction
before
punching.
Normal
keying
provides
the
data
for
punching.
The
standard
features
of
left
zero
and
left
blanks
are
additionally
described
in
this
section, as
is
the
standard
feature
of
program
level
changing.
Left-zero Insertion
Digital fields are
frequently
right-justified
(rightmost
digit
in
the
rightmost column).
When
the
system
right-justifies
a
field
it
must be
instructed
what
to enter
in
the
remaining
columns.
The
fill
field
is
always
zeros or blanks.
If
the
significant
data
is
888,
and
is
to
be
entered
in
a
field
of 10
columns,
the
IBM
129
would
left-zero insert
seven
zeros;
final
data
punched
is
then:
0000000888. The
zero/blank
insertion varies
depending
on
the
mode:
Left-zero
Punching:
Any
field
with
field
definition
(12-
punch) punches
in
every
column,
except
the
first,
is
correctly
programmed
for
left
-zero
punching. Thus,
assume
Supplementary
Operations
25
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