IBM 2025 Maintenance Manual page 58

Serial izer/Deserializer In (SDI) - Diag ..
MDM
4-46
1011 0
Read l:uffer position 128
1 Read buffer position 64
2
Read tuffer position 32
3
Read buffer position 16
4
Read l:uffer position
8
5 Read buffer position 4
6
Read tuffer FOSition
2
7 Read buffer position 1
File Gated Attention (FGA)
MDM
4-46
1100
*
0
1
2
3
4
5
6
7
Module 0 ***
Module 1 ***
Module 2 ***
Module 3 ***
Wrong length record
Unit Exception **
Flag Bit 6
Selected index hold
File Flags In (FFI)
MDM 4-
46
1101* 0
1
2
3
4
5
6
7
Cha in data (CD)
Command chain (CC)
cc or CD and not unusual condition
Status modifier
Program-controlled interruption
(PCI)
Interruption latch
Interrupt condition
Suppress length indicator (SLI)
Disk Status CDS) -- This register is
multiplexed f cr diagnostic uses (~DM
4-345) ..
1110* 0
1
2
3
4
5
6
7
Nondiagnostic
Ready **
on line **
Unsafe **
0
Trap gate latch **
End of cylinder **
low compare
Seek incomplete **
Diag Addr 0
0 Write l:uf fer 128
1 Write tufter 64
2 Write buffer 32
3 ~ite buffer 16
4 Write l:uf fer 8
5 Write buffer 4
6 Write tuf fer 2
7 Write buffer 1
1-48 (7/69)
Diag Addr
1
0 Test unit exceFtion
1
Read Op
2
Erase Op
3
Scan Op
4
Space count Op
5 Home address
Op
6 Home address or RO Op
7 Count Op
Diaq Addr
2
0
Key Op
1
Data Op
2
RO Op
3 Count, key, or data Op
4 count or key Op
5 Write check Op
6 Standard index
7 Bit ring inhibit
Diag Addr 3
0 CYC code position 1
1 CYC code position 16
2 CYC code position 17
3 CYC code error latch
4 Unequal compare
5 Bit ring 7
6 Write clock bit
7 Write data bit
Diag Addr 4
0 Zone A
1 Zone B
2 Zone 1
3 Zone 2
4 Zcne 3
5 Zcne 4
6 HA field
7 Count field
Diaq Addr 5
0 Key field
1 Data field
2 Flag bit 0
3 Flag bit 6
4 Flag bit 7
5 counter decode O
6 counter decode 1
7 Counter decode 2
Diag Addr 6
0 counter decode 3
1 Counter decode 4
2 Counter decode 5
3 counter decode 6
4 Counter decode 7
5 Counter decode 8
6 Counter decode 9
7 Count
=
000