IBM System/360 Operating Guide

The following items are standard on the
Model 8:
• A 13 1/8 inch pin feed platen,
• A 12 1/2 inch (maximum) printing line,
• Six lines per inch line feeding, and
• Character s pacing of ten per inch
No additional special features are available for
the Model 8.
Also, the following functions and manual
controls are removed or inoperative on the
Model 8:
• Left and right margin set (the left and right
margins are fixed),
• Single-double index lever,
• Paper release bar,
• Tab clear-set lever,
• Ribbon shift lever,
• End-of-line bell, and
• Pressure feed rolls.
The Systems Console Attachment Feature
is required (in the 1051 Model N1) to attach a
1052 Model 8.
CPU Connect Switch
CPU On. In the CPU-on position, this switch con-
nects the 1050 to the CPU. If all dc power is on in
the 1051 when this switch is thrown to the on position,
a 1050 operational signal results. A transition from
1050 not-operational to 1050 operational initiates a
1050 ready interrupt with the device-end bit on in
the CSW.
CPU Off. In the off position, this switch takes the
1050 system completely off-line. Any 1050 read
or write commands are then rejected with condition
code 3 (device not operational). When the CPU con-
nect switch is returned to the home or on position,
a ready condition interrupt with device-end status
is initiated.
Request Key
Pressing the request key causes an attention status
to be established in the 1051 attachment. The 1051
attachment holds this attention status until the 1051
attachment becomes available, at which time an
attention interrupt is initiated in the CPU.
Proceed Light
The proceed light indicates that the 1051 attachment
channel is available for operator-initiated keyboard
and/or Reader-2 input through the 1051 home loop.
When the proceed light is on, the keyboard is un-
locked and an interlock is removed from Reader 2.
System Program/Duplicate Switch
Program Position. Two-character program control
sequences from any source cause the proper compo-
nent control, and the two-character sequences are
not printed or punched. During a read command,
neither character of a two-character control sequence
is stored.
With the 1051 Home Component Recognition
feature, an output other than the first printer must
have its home-component-recognition latch turned
on by a two-character program control sequence
as well as having its assignment switch in the home
position to satisfy the output select and ready inter-
lock to the 1051 attachment during write commands.
Duplicate Position. With this switch in the duplicate
position:
1. Manual component assignment is required and
the 1051 Home Component Recognition special
feature is not effective.
2. The prefix code is not printed or stored, but
it is punched. The following numeric or alpha-
betic character is then stored, printed, and
punched.
3. The output select and ready interlock to the 1051
attachment is not dependent upon any of the
output home-component-recognition latches
being on.
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IBM System/360 Specifications

General

Brand	IBM
Model	System/360
Category	Desktop
Language	English