ACC Programmer's Reference Guide

76 Chapter3
ZCOM Tables and Data Structures
Interface Table
In the following definitions of the different fields, there are references to
$PORT, $FIRQ and $STDT, transactions. For more information on these
transactions, refer to the backplane protocol descriptions.
ifwinfo Firmware run-time information word uns.short 2
ifboff Buffer pointer adjusted offset uns.short 2
spare1 Reserved, not used int 4
intfcq Interface control queue struct 56
ifdmaq DMA receive buffer queue struct 56
txcx_head Express queue terminal lists Pointer 8
txca_head High-priority queue terminal lists Pointer 8
txcb_head Low-priority queue terminal lists Pointer 8
itxlstx Express terminal list headers Pointer 8
itxlsta High priority terminal list headers Pointer 8
itxlstb Low priority terminal list headers Pointer 8
iplimit Port unack TX limit (in bytes) Pointer 8
ipbytes Port unack TX size (in bytes) Pointer 8
ipstat Port status/Subchannel status Pointer 8
ipcntr Pointer to terminal count per port Pointer 8
iportn Pointer to port configuration bytes Pointer 8
ifplook PTT lookup table pointer Pointer 8
ifcmdbp Current backplane command buffer pointer Pointer 8
ilock Pointer to IFT lock Pointer 8
ihpap Pointer to HPA entry Pointer 8
card Card type specific information Union of:
bsp
mmp
3616
18592
Table 3-13 Interface Table
Field Name Field Description Field Type Size (Bytes)