IBM 2025 Maintenance Manual page 27

Auxiliary Storage Module 1
0
7
8
E
F
0 8
F
Punch Row Image
( 1 X00-1 X77)
1
PFR Row Image
(1X78-1XE7)
0 1 2 3 4 5 6 7 8 9 A B C D E F
CJDIBJ JEJAI
Reader Error Logout
"C" - Reader*lndicator Byte (10FO) "D" - Sense* Indicator Byte (10F1)
Chain Stkr Stkr
Count
Cmd Not Equip Val
Data Sel Sel Read Star
Feed WLR Rej Rdy Check Check
1,2,3 1,2,3
0
2
3 4 5 6 7 0 2 3 4
"B" - Punch Old Stacker (10F2)
I
I I I I
0 1 2 3 4 5 6 7
"E" - Punch Indicator Byte (10F4) "A" - Punch Sense Byte (10F5)
Chai~
Stkr Stkr PFR Count PFR Cmd Not Equip Val
Data Sel Sel Read Stor Count WLR Rej Rdy Check Check
1,2,3 1,2,3
0 2 3 4 5 6 7 0 2 3 4
* Reader and sense indicators reset on SIO decode (error).
Figure 1-21. 2540 Sense Indicator Bytes
Unusl
Cmd
5 6
7
Unusl
Cmd
5 6 7
2025 FEMM (7/69) 1-17