NonStop Operating System Event Management Programming Manual

Tape Process Event Messages (ZTAP)
HP NonStop Operating System Event Management Programming Manual—520372-020
10-133
Messages
Unconditional Tokens
Cause. The RIC word from an I/O operation on a 3202 controller has the CRC/multi-
track error flag set. A read, write, or write-file-mark operation that receives this error is
retried up to 40 times. The controller sets this flag when any of the following occur:

For nonreturn to zero inverted (NRZI) tape

The CRC character read from a tape does not match the CRC character
generated from the data read.

A bad spot on the tape is sufficient to cause a signal dropout, which is detected
during a write operation.

For PE tape

The CRC character generated internally by the controller from the data being
written does not match the CRC character generated from the readback data.

Errors were detected in two or more tracks during a read operation.

An end-of-record was detected before an end-of-data during a read or write
operation.

The preamble is shorter than 32 bytes or longer than 48 bytes.

During a write operation, data was detected earlier than expected by the read
head.
ZTAP-TKN-UNIT-ADR token-type ZSPI-TYP-UINT
ZEMS-MAP-EXIOADDR token-type ZSPI-DDL-EXIOADDR
ZTAP-TKN-EIO-LAC token-type ZSPI-TYP-UINT
ZTAP-TKN-EIO-LPRM token-type ZSPI-TYP-UINT
ZTAP-TKN-EIO-RDST token-type ZSPI-TYP-UINT
ZTAP-TKN-EIO-CHANSTAT token-type ZSPI-TYP-UINT
ZTAP-TKN-IIO-RIC token-type ZSPI-TYP-UINT
ZTAP-TKN-IIO-RIST token-type ZSPI-TYP-UINT
ZTAP-TKN-IIO-CHANSTAT token-type ZSPI-TYP-UINT
ZTAP-TKN-IOC-COUNT token-type ZSPI-TYP-UINT
ZTAP-TKN-IOC-RESIDUE token-type ZSPI-TYP-UINT
ZTAP-TKN-TAPE-VOLUME token-type ZTAP-TYP-TAPE-VOLUME
Event-Message Text
dev-name CRC ERROR, LDEV $ldev, SUBCHANNEL ADDRESS %unit-addr
Token Description
ZEMS-TKN-EVENTNUMBER Event number for this message. Value is ZTAP-EVT-3202-
CRCERROR (326).
ZTAP-TKN-DEV-NAME Subject token that specifies the name of the tape device in
the form $nnnn.