IBM System/360 Operating Guide

Halt I/O
Keyboard Entry
If a halt I/O command is executed during a keyboard
entry, the operation is terminated immediately.
The keyboard is locked and the proceed light is
turned off. Channel-end status and device-end
status are established, and an automatic carrier
return and the line feed is initiated. Any chaining
flags are turned off.
Write
If a halt I/O command is executed during a write
command, the current write command is terminated
immediately. Channel-end status and device-end
status and an interrupt condition are established.
An automatic carrier return and line feed is initi-
ated. Any chaining flags are turned off.
Read from Reader 2
If a halt I/O command is executed during a read
command, the data transfer is terminated and
channel-end status and an interrupt condition are
established. The attachment and 1050 remain busy
until the normal end of media is reached, at which
time device-end and an interrupt condition are
established. Any chaining flags are turned off.
An automatic carrier return and line feed is ini-
tiated to any monitoring printers.
Codes
The following automatic translation is performed
between the 1050 PrTC/EBCD and the System/360
EBCDI code. For the PrTC/EBCD code refer to
Figure 13; for the EBCDI code, Figure 14.
Input
The following codes are translated on input:
26
Lower-case alphabetic (a through z)
26
Upper-case alphabetic (A through Z)
10 Numeric (0 through 9)
26 Special graphics #@/,-$&. =(;:%' > *)"(¢?
_L -, +!
4 Printer control codes (line feed, new line, tab)
backspace)
.1 Space /blank
93 Total
All other 1050 control codes are deleted and not
entered into storage.
Output
The follOWing codes are translated on output:
26
Lower-case alphabetic (a through z)
26 Upper-case alphabetic (A through Z)
10 Numeric (0 through 9)
26 Special graphics #@/,-$&.=<;:%'>*)"(¢?
- ~ 1-,+
1 Space /blank
16 1050 control codes
105 Total
39

IBM System/360 Specifications

General

Brand	IBM
Model	System/360
Category	Desktop
Language	English