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Machine-Cheek-Interruption Code
11-7
Subclass
11-8
System Damage
11-8
Instruction-Processing Damage
11-8
System Recovery
11-9
Interval-Timer Damage
11-9
Timing-Facility Damage
11-9
External Damage
11-9
Degradation
Warning
Auxiliary Bits
Delayed
11-9
11-10
11-10
11-10
Storage Error Uncorrected
11-10
Storage-Key Error Uncorrected
11-10
Machine-Check Interruption-Code Validity
Bits
11-10
PSW-EMWP Validity
11-10
PSW Mask and Key Validity
11-10
PSW Program-Mask and Condition-Code
Validity
11-10
PSW-Instruction-Address Validity
Failing-Storage-Address Validity
Floating-Point-Register Validity
11-11
11-11
11-11
General-Register Validity
11-11
Control-Register Validity
11-11
Storage Logical Validity
11-11
CPU-Timer Validity
11-11
Clock-Comparator Validity
11-11
Machine-Check Extended Interruption
Information
11-11
Register-Save Areas
Failing-Storage Address
Machine-Check Masking
11-11
11-12
11-12
Recovery-Report Mask
11-12
Degradation-Report Mask
11-12
External-Damage-Report Mask
11-12
Warning Mask
11-12
Chapter
12~
Input/Output Operations
Attachment of Input/Output Devices
Input/Output Devices
12-2
Control Units
12-2
Channels
12-3
12-3
12-4
12-5
12-1
12-2
Modes of Operation
Types of Channels
I/O-System Operation
Compatibility of Operation
12-6
12-7
12-7
Control of Input/Output Devices
Input/Output Device Addressing
States of the Input/Output System
Resetting of the Input/Output System
12-8
12-10
I/O-System Reset
12-10
1/
0 Selective Reset
12-10
Effect of Reset on a Working Device
12-10
Reset Upon Malfunction
12-10
Condition Code
12-11
Instruction Formats
12-13
viii
Instructions
CLEAR I/O
12-14
12-14
HALT DEVICE
12-16
HALT I/O
12-19
START I/O
12-21
START I/O FAST RELEASE
12-21
STORE CHANNEL ID
12-23
TEST CHANNEL
12-24
TEST I/O
12-25
Input/ Output-Instruction-Exception Handling
Execution of Input/Output Operations
12-27
Blocking of Data
12-28
Channel-Address Word
12-28
Channel-Command Word
12-28
Command Code
12-29
Designation of Storage Area
12-30
Chaining
12-31
Data Chaining
12-32
Command Chaining
12-33
Skipping
12-34
Program-Controlled Interruption
12-34
Commands
12-35
Write
12-36
Read
12-36
Read Backward
12-36
Control
12-37
Sense
12-37
Transfer in Channel
12-39
Command Retry
12-39
Conclusion of Input/Output Operations
12-40
Types of Conclusion
12-40
Conclusion at Operation Initiation
12-40
Immediate Operations
12-41
Conclusion of Data Transfer
12-41
Termination by HALT I/O or HALT
DEVICE
12-42
Termination by CLEAR I/O
12-44
Termination Due to Equipment
Malfunction
12-44
Input/Output Interruptions
12-44
Interruption Conditions
12-44
Channel-Available Interruption
12-45
Priority of Interruptions
12-46
Interruption Action
Channel-Status Word
Unit Status
12-48
Attention
12-48
12-46
12-47
Status Modifier
Control-Unit End
12-48
12-48
Busy
12-49
Channel End
Device End
Unit Check
12-50
12-51
12-51
Unit Exception
12-52
Channel Status
12-52
Program-Controlled Interruption
Incorrect Length
12-53
Program Check
12-53
12-52
12-27
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