HP UX 11i v1 I/O Cards manual Ifirqbp

ZCOM Tables and Data Structures

Interface Table

CARD.BSP has the following fields shown in Table 3-17.

Table 3-17	CARD.BSP Structure
Field Name	Field Description	Field Type	Size
			(Bytes)
itxlstx	Express terminal list headers	struct[8]	8*40
itxlsta	High priority terminal list headers	struct[8]	8*40
itxlstb	Low priority terminal list headers	struct[8]	8*40
iplimit	Port unack TX limit (in bytes)	uns.int [8]	8*4
ipbytes	Port unack TX size (in bytes)	int [8]	8*4
ipstat	Port status/Subchannel status	uns.short [8]	8*2
ipcntr	Terminal count per port	uns.short [8]	8*2
iportn	Port configuration bytes	struct[8]	8*4
ifirqbp	$FIRQ reply buffer pointer	pointer	8
irespbp	Backplane response buffer pointer	pointer	8
istdtbp	$STDT reply buffer pointer	pointer	8
ifpntr	Pointer to current PTT	pointer	8
ifcmdbuf	Current backplane command buffer	uns.char [256]	256
ifirqbuf	FIRQ response buffer	uns.char [64]	64
irespbuf	Backplane response buffer	uns.char [64]	64
istdtbuf	STDT status buffer	uns.char [2048]	2048
iscratch	Scratch area for buffer alignment	uns.char [64]	64

The fields for both the card.mmp and card.bsp structures are described below. In many cases, the field names in the two structures are the same and in such cases, their function is identical. Only the number of elements in the array is different. The itxlstx through iportn fields are arrays indexed by the communication channel. For the 2/8-port ACC cards (e.g. card.bsp), each element in the array represents a physical port. For the 4-port E1/T1 ACC cards, these arrays are indexed by a combination of port and subchannel. Specifically elements 0-31 represent port 0 and subchannels 0 to 31; elements 32-63 represent port 1 and subchannels 0 to 31, etc.

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