HP Advanced Communications Controllers (ACC) manual Physical Terminal Tables

ZCOM Tables and Data Structures

Physical Terminal Tables

Physical Terminal Tables

The physical terminal table (zptt_type) contains information used by the LDM and DAM to initialize and control a physical terminal (or other device). The PTT consists of a system area, which is reserved for use by the ZCOM subsystem, and a user area which may be manipulated by application programs. The user modifiable portion of the PTT immediately follows the reserved area. The layout of the PTT is shown in Table 3-11 and Table 3-12.

Table 3-11	Physical Terminal Tables (System Area)
Field Name		Field Description	Field Type	Size
				(Bytes)
PTZLU		Owning terminal ZLU number	uns.short	2
PTZCS		Owning terminal ZLU checksum	uns.short	2
PTMUX		MUX number for this terminal	uns.short	2
PTPORT		Port number within interface	uns.char	1
PTTERM		Terminal number within port	uns.char	1
PTMX_TERM		Terminal number in card	uns.short	2
SUBCH		Subchannel number on port	uns.short	2
PTZPRCVR		ZCOM address of primary receiver	struct	6
PTZPCTL_RCVR		ZCOM address of primary control	struct	6
		receiver
PTZSHRCVRS		Pointer to list of shared receivers	pointer	8
PTZSHCTLRCVR		Pointer to list of shared control	pointer	8
S		receivers
PTLIST		Pointer to next PTT of same port	pointer	8
PTTXLX		Pointer to next PTT on express list	pointer	8
PTTXQX		Express transmit buffer queue	struct	56

68 Chapter 3