IBM System/370 145 Operating Procedures Manual page 63

3
Dial the desired word address into rotary switches, C, D,
E, F, G, and H.
4
For a store operation, set rotary switches A and B
to the hexadecimal byte value to be stored.
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,
5
Press the STORE or DISPLAY key .
62
• The addressed main storage word is displayed in the DPL Y
ASMBLR OUT roller switch indicators at the end of the
store or display operation. Any byte stored is displayed
in its stored condition.
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