IBM 2025 Maintenance Manual page 119

Sense Byte 0 Sense Byte 1
Bit 0 Command Reject Data Check in Count
Field
Bit 1 Intervention Required Track Overrun
Bit 2 End-of-Cylinder
Bit 3 Equipment Check Invalid Sequence
Bit 4 Data Check
No Record Found
Bit 5 Overrun File Protected
Bit 6 Track-Condition Check Missing Address Marker
Bit 7
Seek Check
Figure 1-112. 2311/DAC Sense Byte surrmary
r----------------------------1
!Search Home Address
I
!Equal Command Code
I
~-------T-----------T---------~
IDecimallHexadecimallBinary
I
r----------+-------+-----------+---------~
IMT Bit Off
I
57
I
39 10011 10011
~----------+-------+-----------+---------~
IMT Bit On
I
185
I
B9 11011 10011
L _________
J. ______ J. ___________ J. _________ J
Figure 1-113. 2311/DAC Operation Cedes for
Search Home Aaaress Equal
Comrrand
Search ID Command Code
Command
Decimal
Hexadecimal Binary
Search ID Equal 49 31
00110001
Search ID High 81 51 01010001
Search ID Equal
or High 113
71
01110001
Search ID Multipule Track Command Code
Command
Decimal
Hexadecimal
Binary
Search ID Equal 177 B1 10110001
Search ID High 209
01
11010001
Search ID Equal
or High 241 F1 11110001
Figure 1-114. 2311/DAC Search ID Corr.rr:and
co
a
es
Sense Byte 2
Sense Byte 3
Unsafe Ready
On Line
Unsafe
Selected Status
Cyclic-Code Check
On Line
Unselected File Status
End of Cylinder
Seek Incomplete
Record Identifier
Flag
Cylinder
Head
Rec. Key Cyclic
No.
No.
Data Len.
Check
No. Len.
Count Area
Figure 1-115. 2311/DAC Identifier CID)
2025 FEMM (7/69) 1-109