Display Assembler Out Roller Switch - IBM System/370 145 Operating Procedures Manual

•
DISPLAY ASSEMBLER OUT ROLLER SWITCH
/
.
The DISPLAY ASSEMBLER OUT roller switch provides
a full-time display of the following.
INFORMATION DISPLAYED
ROLLER POSITION
I
I
Byte 0 Byte 1 Byte 2 Byte 3
1 Note 1 Note 2
I
M-Register Bytes 1,2, and 3
2
Storage Data Bus-Out
3*
C-Register
4*
MB-2 MB-3
I
N2
I
N3
5*
B-Register
6* Z-Register
7*
D-Register
B*
MCKA
Note 1: Protect stack key associated with the
Note 2: Displays the selected channel.
address in bytes 1,2, and 3.
*Positions 3 through 8 are for service usc.
12
DPlV ASSEMBLER OUT
1 MREGISTEA
2 SO&O
3 CO~TAOL REGISTER
.. MB2,M83,N2.N3
S B REGISTER
6 Z REGISTER
70 REGISTER
8 Me REGISTER