Table of Contents
Advertisement
Current PSW
•
This display allows you to change the contents of the
current PSW.
* DISPLAY/ALTER*
G GENERAL REGISTERS
C CONTROL REGISTERS
P CURRENT PSW
F FLOATING POINT REG.
K STORAGE KEY
S MAIN STORAGE SIZE
V MAIN STORAGE VIRTUAL
M MAIN STORAGE REAL
*MAIN STORAGE DISPLAY*
+
PAGE UP
- PAGE DOWN
SELECTION: P ADDRESS:
*CURRENT PSW*
SYST.MASK PROT.KEY
EMWP
ILC
CC
PROG.MASK
BBBB BBBB BBBB
BBBB BB
BB BBBB
INSTRUCTION ADDRESS:XXXXXX
ADDRESS IN HEX, OTHER DATA IN BINARY
Note: Above is a 'Current PSW' display as it appears when the
system is in 370/BC mode. The ILC (instruction length code)
appears only for a system in BC mode. In EC mode the ILC is in
a fixed storage location.
To select the current PSW display:
1. Type P after the word SELECTION in the display.
2. Press ENTER.
When you press ENTER, the machine stops and the PSW is
displayed in binary notation, except for the instruction
address, which appears in hexadecimal notation.
The logical meaning of the data that appears in the
'current PSW' display depends on whether your machine is in
VSE or 370 mode, and also on whether it is in Basic Control
(BC) or Extended Control (EC) mode.
The control mode
currently in effect for your machine, 370 or VSE, is shown
in line 21 of the machine status area, and the EC or BC
mode is distinguished by the E-bit in the PSW being one for
EC mode, 0 for BC mode.
Procedures
3 -
1
9
Advertisement
Table of Contents
