Main Storage - IBM 4331 Installation, Setup, Operations, And Problem Determination Manual

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Floating Point Registers
This display enables you to examine the contents of the
floating point registers.
'
0
'FLOAT I NG PO I NT REGISTERS;':
;''DI SPLAY /AL TER'
0
'
G GENERAL REGISTERS
C CONTROL REGISTERS
P CURRENT PSW
F FLOATING POINT REG.
D PAGE
DESCRIPTION
S CAPACITY COUNTS
V MAIN STORAGE
*MAIN STORAGE DISPLAY*
+
PAGE UP
- PAGE DOWN
SELECTION: F ADDRESS:
0
xx xx
2
xx xx
4
xx xx
6
xx xx
The picture above appears in VSE mode.
xx xx xx xx xx xx
xx xx xx xx xx xx
xx xx xx xx xx xx
xxxx xxxx xxxx
To select the 'floating point registers' display:
1.
Type in F after the word SELECTION.
2. Fress ENTER.
The four floating point registers appear in the display. In
the example given above, each X represents a hexadecimal
digit.
Beneath each display field is the corresponding
alter field, which is blank unless data is being altered.
To direct the cursor to the first half of a register, type
the register number (0, 2,
4, 6)
next to ADDRESS and press
ENTER. To select the second half of the register, specify
1,
3, 5
or 7. The cursor will appear below the first
(alter) character position in the specified fullword.
The procedure for altering is described under 'General
R
I
eg1sters .
Procedures
3 -
2 1

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