NonStop Operating System Event Management Programming Manual

Low-Level I/O Event Messages (ZGIO)
HP NonStop Operating System Event Management Programming Manual—520372-020
3-3
Low-Level I/O Events
Topics:

Low-Level I/O Events on page 3-3

Common Definitions on page 3-5

Description of ZGIO Event Messages on page 3-12
Low-Level I/O Events
There are two types of low-level I/O events:

Channel-Related Events on page 3-4 (including special channel interrupt events)

Device-Related or Controller-Related Events on page 3-4
143: ZGIO-EVT-SCHANLRPSFREEZE The channel microcode detected an
unknown error.
144: ZGIO-EVT-SCHANLRPSUNKNOWN
The channel microcode detected an
undecodable bus protocol error.
145: ZGIO-EVT-SCHANLTBUSRAC
A device-handshake error or a parity error
occurred during initial access of a
controller.
146: ZGIO-EVT-SCHANLTBUSSEL
A device-handshake error occurred during
initial selection of a controller.
147: ZGIO-EVT-MULTICCLMESS
Multiple IIO or HIIO instructions failed with
CCL errors.
148: ZGIO-EVT-INTERRUPTPENDING
A controller posted an interrupt during EIO
processing.
149: ZGIO-EVT-IIOPADINNOPADO
A controller returned an illegal handshake
on an even-byte write data transfer.
150: ZGIO-EVT-SCHANLBADRETURN
A channel detected an undecodable data
transfer request.
151: ZGIO-EVT-SUCC-CNTRL-RELOCATE
A controller was relocated successfully.
158: ZGIO-EVT-CONTROLLERIOPONFLOOD
A controller experienced 3 or more IOPON
(I/O power on) events within a time period
of 10.2 minutes.
Table 3-1. Low-Level I/O Event Messages (page 3 of 3)
Event Number and Symbolic Name Description