IBM 1620 User Manual

put, resulting from PUNCH, PUNCH TAPE, PRINT, and TYPE statements is not in-
hibited.
The output format of the trace data is E14.8 for floating point results
and 15 for fixed point results.
With the modifications shown below, the trace output can be obtained in
cards, except in
the printer-oriented system.
Su broutine Set 1
Card number
Columns
Standard
Change to
30126
54-55
95
47
30127
6- 7
96
48
Subroutine
Set 2
Card number
Columns
Standard
Change to
30124
54-55
95
47
30125
6- 7
96
48
Subroutine
Set 3
Card number
Columns Standard
Change to
30130
30-31
95
47
42-43 96
48
Subroutine
Set 4
Card number
Columns Standard
Change to
30135
30-31
95 47
42-43
96
48
Note
that program switch 4 serves a dual function during execution of the
object program: i.e., provision of trace data and correction of input data incor-
rectly entered at the console keyboard. Thus, when running in the trace mode,
you
must turn off program switch 4 before typing output data. Following the
entry of the last item on the input list (after pressing the release key), press 8IE
two or three times, turn the switch on, and press the start key. (If a trace routine
is desired, switch 4 cannot otherwise be used in the program.)
Operating Principles 57

IBM 1620 Specifications

General

Brand	IBM
Model	1620
Category	Desktop
Language	English