z/VM: CP Commands and Utilities Reference - z/VM - IBM

PARM
identifies the interrupt parameter to be returned with any interrupt for the
specified channel command words.
KEY
identifies the storage protection key to be used.
FPI
identifies the format, prefetch, initial status control byte.
LPM
identifies the logical path mask.
aaaaaaaa TSCH xxxxxxxx address2 CC 0 SCH vsch DEV vvvv
CCWA xxxxxxxx DEV STS xx SCH STS xx CNT xxxx
KEY x FPI xx CC x CTLS xxxx
aaaaaaaa TSCH xxxxxxxx address2 CC 1 SCH vsch DEV vvvv
KEY x FPI xx CC x CTLS xxxx
CCWA
identifies the ending channel command word address when I/O is completed.
DEV STS
identifies the unit status for the device.
SCH STS
identifies the channel status for the subchannel.
CNT
identifies the residual CCW count upon I/O completion.
KEY
identifies the key used for storage protection.
FPI
identifies the format, prefetch, initial status control byte used. It also indicates a
no path available condition and a confirmed I/O condition code 0.
CC x
identifies the condition code for the requested I/O operation. Unlike 370 I/O, this
is always returned separately from the SSCH instruction.
CTLS
identifies the function and activity control bytes.
aaaaaaaa TPI xxxxxxxx address2 CC 1
SCH xxxx DEV xxxx PARM xxxxxxxx
SCH
identifies the subchannel requesting the interruption.
DEV
identifies the subchannel device.
PARM
identifies the interrupt parameter supplied by the virtual machine; it is zero if the
interrupt is unsolicited.
Instructions/Condition Codes
aaaaaaaa mnem xxxxxxxx address2
CC n SCH vsch DEV vvvv
Executed I/O Instructions
TRACE: Command Responses
Chapter 2. CP Commands 1615