The following table identifies each HCD service routine and its function
used at initialization time.
Service Routine Name |
Function of the Routine |
CIT Build Routine |
Builds control unit information tables (CITs). There is one CIT for
each control unit type and model supported by a UIM. The CIT build routine
resides in the HCD load library. |
DFT Build Routine |
Builds the device features tables (DFTs). There is one DFT for each
device number in the I/O configuration. The DFT build routine resides in SYS1.NUCLEUS. |
GIT Build Routine |
Builds generic information tables (GITs). There is one GIT for each
generic device type supported by the UIMs. The GIT build routine resides in
SYS1.NUCLEUS. |
DCT Build Routine |
Builds device characteristics tables (DCTs). There is one DCT for each
DASD device type and model supported by the UIMs. The DCT build routine resides
in SYS1.NUCLEUS. |
SIT Build Routine |
Builds switch information tables (SITs). There is one SIT for each
ESCON director type and model supported by the UIMs. The SIT build routine
resides in the HCD load library. |
UIT Build Routine |
Builds unit information tables (UITs). There is one UIT for each device
type and model supported by the UIMs. The UIT build routine resides in SYS1.NUCLEUS. |
The following table identifies each HCD service routine and its function
used at validation time.
Service Routine Name |
Function of the Routine |
Device Lookup Routine |
Obtains information about other devices attached to one control unit.
The device lookup routine resides in the HCD load library. |
Generic Update Routine |
Updates the name of a generic device type as a result of features and
parameters specified for that device. The generic update routine resides in
the HCD load library. |
Descriptions of the service routines follow.
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