Reference Guide

ZCOM Tables and Data Structures
Interface Table
Chapter 3 81
IFSTAT - interface card status
This word indicates the current status of the Mux card. It is updated by
the driver. Bit 15 indicates whether the card is usable (when set) or not
(when cleared).
When the card status is down (i.e., ZCOM_IFSTAT_DWN), it can only be
resumed through a control request to the driver which will reset the
driver and the interface card (via “zmon restart”).
ISCHDL - Scheduler event flags
The scheduler uses this word to store the event flags that control the
state of the backplane.
Table 3-15 Interface Card Status IFSTAT
Symbol Value (hex) Meaning
ZCOM_IFSTAT_BOOT 0x0000 Driver and interface not initialized
ZCOM_IFSTAT_RST 0x8001 Being reset
ZCOM_IFSTAT_TMO 0x8002 Timed out
ZCOM_IFSTAT_PWF 0x8003 Power failed
ZCOM_IFSTAT_DWN 0x0004 Card down (due to serious error)
ZCOM_IFSTAT_ACT 0x8005 Up and active
ZCOM_IFSTAT_FWF 0x8006 Firmware failure
ZCOM_IFSTAT_OPR 0x8007 Operator reset
ZCOM_IFSTAT_DMI 0x8008 DMA interrupt error
ZCOM_IFSTAT_CDD 0x8009 Card dead, no activity
ZCOM_IFSTAT_NOC 0x000A Card absent
ZCOM_IFSTAT_FER 0x800B Hardware fatal error
ZCOM_IFSTAT_DSB 0x000C Card disabled
ZCOM_IFSTAT_INC 0x000D Card startup incomplete
ZCOM_IFSTAT_SUSP 0x000E Card being suspended (OLAR)