bits are set in the channel check record's
fields.
The channel logout is then checked and sequence codes are set based
on the presence of a channel control check, or an interface control
check. If a channel control check is present, the codes set are
determined through parity. The count determines if parity is good and
sets a resultant condition code.
The logout area is
parity and is the
unit-address-valid bit in the
valid, the unit-address-valid bit is reset to indicate the invalid
condition.
The
After
logout area to ones, and returns to the channel control subroutine.
If the channel failed to log out
area is all ones. If a fullword of ones is found, a CP
set in the channel check record's
The termination and sequence codes are set depending on the presence
of an interface control check or channel control check. If a channel
control check is present, the codes set are determined through parity,
count, and/or data transfer checks. For the
determined directly
The logout area is also examined to ensure valid parity in the unit
address and to ensure that the address is the
The third word of the logout area is also analyzed for type II
errors. If a type II error is found, a CP termination condition exists.
The
Before returning to the channel control subroutine, the
.oves the
sets the
This routine analyzes 9 words of the 28-word logout.
