IBM System/370 145 Operating Procedures Manual page 62

MANUAL STORE DISPLAY OPERATIONS
• The MAN indicator must be on for the STORE and
DISPLAY keys to be operative. If the CPU is running,
press the STOP key to turn on the MAN indicator. If
the CPU is stopped and the MAN indicator is not on, check
that the toggle and rotary switches are in the normal
positions, and press the START key to turn on the
MAN indicator.
STORAGE SELECT
MAIN STORAGE
r
MPX CHA@CONTROLSTORAGE
II
CHAN 1
0 ·
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OR
EXT
REG
CHAN 2 • EXP LOCAL
II
STOR REGS
CHAN 3.
•
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CHAN 4
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Main Storage
With the system in manual mode (MAN indicator on),
store/display of main storage is performed as follows:
1
Set the STORAGE SELECT switch to MAIN
STORAGE.
DPL Y ASMBLR OUT
1 M REGISTER
2 SOB 0
3 CONTROL REGISTER
4 MB2, MB3, N2, N3
5 B REGISTER
6 Z REGISTER
7 0 REGISTER
8 MC REGISTER
2
Set the DPL Y ASMBLR OUT roller switch to SDBO
(position 2).
Operating Procedures 61
I