NonStop Operating System Event Management Programming Manual

Low-Level I/O Event Messages (ZGIO)
HP NonStop Operating System Event Management Programming Manual—520372-020
3-59
Messages
146: ZGIO-EVT-SCHANLTBUSSEL
A device controller did not perform a handshake correctly during the select-for-data
transfer protocol.
Unconditional Tokens
Cause. The selection of a device controller for data transfer failed because it did not
respond to the select command.
Effect. If the reconnect-poll sequencer (RPS) failed, it might not be usable again until
the processor is reloaded or the channel is reset; however, the channel tries to restart
the RPS. If this error occurs regularly, the operating system disables the channel.
Recovery. If the error continues to occur, see Recovery Action Requiring Vendor
Support on page 3-13.
Subject: ZGIO-TKN-CHANNEL
Type of event: Channel-related
Potentially critical event: Yes
Action event: No
Message sender: Monitor process
TMDS collector: Yes
Unconditional Tokens
ZEMS-TKN-EVENTNUMBER token-type ZSPI-TYP-INT
ZEMS-MAP-EXIOADDR definition ZSPI-DDL-EXIOADDR
ZGIO-TKN-CHANNEL token-type ZSPI-TYP-UINT
ZGIO-TKN-POLLRESPONSE token-type ZSPI-TYP-UINT
Event-Message Text
DEVICE HANDSHAKE ERROR DURING TBUS SELECT
Token Description
ZEMS-TKN-EVENTNUMBER Event number for this message. Value is ZGIO-EVT-
SCHANLTBUSSEL (146).
ZEMS-MAP-EXIOADDR External (physical) I/O address.
ZGIO-TKN-CHANNEL Subject token that specifies the channel number for the
event.
ZGIO-TKN-POLLRESPONSE Contains no valid information.