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Mode Selection
The modes
described in this
section allow you
to display
and
change certain
control
information
and data.
These
modes
are
listed
below
and
the
relevant
operating
procedures are given
on the following pages.
Column 1 in
the list
gives the name
of the
mode; column 2
shows the
selector
character
used
to call
up
the
mode
display.
Columns 3 and
4
show the modes that apply to 370 and VSE.
Col
1
I
Col
2
Col 3 Col 41
-----------------------!-------------
-----1
Mode of Operation
I
Selector Char
370
VSE I
----------------------- -------------
-----1
Address Compare
A
x
x
I
Check Control
K
x
x
I
Display/Alter
D
x
x
I
Capacity Counts
s
x
Control Registers
c
x
x
Current PSW
p
x
x
Floating Point Regs
F
x
x
General Registers
G
x
x
Storage Key
K
x
Main Storage
v
I
x
Main Storage Real
M
I
x
Main Storage Virtual
v
I
x
Page Description
D
I
x
Page Down
+
I
x
x
Page Up
I
x
x
Main Storage Size
s
I
x
Communication Lines
E
I
x
x
Instruction Step
I
I
x
x
11nterva1 Timer
J
I
x
x
!Machine Save
s
I
x
!Native Displays and
I
I Printers
M
I
x
x
!Program Load
L
I
x
x
I Restart
R
I
x
x
I
Clear Reset
c
I
x
x
I
Reset Instruction Step
N
I
x
x
!Program Reset
p
I
x
x
!Store Status
s
I
x
ITOD Enable
y
I
x
x
!"User Diskette Control
G
I
x
x
!Diskette Device Address
H
I
x
x
3-6
4331 Processor Operators Guide
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