Special Techniques; Data Packing-Home Loop (Using The Card Reader Program Special Feature) - IBM 1050 Reference Manual

Special Techniques
Data Packing - Home Loop (Using the
Card Reader Program Special Feature)
General Outline
The high degree of flexibility possible with the
IBM
1050 System is demonstrated by the wide range of ap-
plications it can process. One of these applications is
the packing of several card records into one printed
and punched record, with one EOB per packed line.
The 1050 components required are: 1051-1052 (or 1053)
1054-1055-1056.
Suppose the first twenty columns of each card are
punched with data to be printed and punched. Card
columns other than the first twenty can be used; how-
ever, the program tape must contain the proper skip
start and skip stop codes to permit this. Any number
of card columns can be packed, but the number of
columns used per card must remain constant. The
punching for the input cards and program tape is as
follows:
PROGRAM TAPE
Column 80-Homing Position
(12-track)
Column 21-Prefix
(8-track punch)
Column 22-Eject
INPUT CARDS
Columns 1-20-Data
Column 21-Component-recog-
nition code -9 (Reader 1 on,
Reader 2 off)
Columns 22-80-data not to be
used for this application
The program tape and the card are read alternately
column for column, starting with column one of the
tape. The component-recognition code (9) could have
been punched in column 21 in PTT code/6 form along
with the 8-track punch (prefix) presently there. How-
ever, this requires additional planning to prevent any
data punched in card column 21 from punching.
The master paper-tape in the tape reader is punched
as follows:
CODE
r~
One
START Prefix
PORTION Three
CR/LF
FIRST { Prefix
CARD Zero
SECOND f
Prefix
CARD Zero
62 1050 Detailed Information
DESCRIPTION
Printer 1 On
Punch 1 On
Restores Print element to left
margin.
Reader 2 On, Reader 1 Off
(transfer reading to the card
reader from the tape reader)
THIRD
CARD
FOURTH
CARD
Co DE
(Prefix
l
Zero
(Prefix
l
Zero
EOB
CR/LF
(Prefix
~
Zero
(Prefix
~
Zero
(Prefix
~
Zero
(Prefix
l
Zero
EOB
CR/LF
etc.
DESCRIPTION
End-of-Block
Carrier-Return and Line Feed
The number of cards to be packed per line deter-
mines the number of prefix zero codes per EOB. If this
tape is spliced into a continuous tape-loop, the splice
should occur after the last EOB code. The starting po-
sition of the tape is that section containing:
CODE
Prefix
One
Prefix
Three
CR/LF
Detailed Description
DESCRIPTION
Printer 1 on
Punch 1 on
The necessary setup procedures are:
1. Place all required components in a ready status and
assign to
HOME.
2. Place program tape in the card reader with column
one of the tape under the brushes and turn on the
program tape switch. (See Installing A Program
Tape in the 1056 Card Reader section.)
3. Place cards in card reader and master tape in tape
reader (and align).
Now the operator should:
1. Press the reset button to restore the terminal and
place reader 1 in a selected status.
2. Press the home-reader start button:
a. Tape reader reads from the master tape:
Prefix, one-Printer 1 On,
Prefix, three-Punch 1 On (tape punch),