HP Advanced Communications Controllers (ACC) manual System flags length & status Uns.int

			ZCOM Tables and Data Structures
				Data Buffer Pool
	Free Buffer Header Structure (zfbh_type)
	The buffer header contains information about the buffer as well as a
	linkage to the next buffer. (zbhd_type). See Table 3-30 and Table 3-31.
Table 3-30	Free Buffer Header Structure (zfbh_type)
Field Name	Field Description		Field Type		Size
					(Bytes)
BFFLAG	System flags (length & status)	uns.int			4
SPARE1	Reserved, not used	int			4
QHEAD	Pointer to next buffer on queue	pointer			8
BFPREV	Pointer to previous buffer on queue	pointer			8
Table 3-31	Buffer Structure (zbhd_type)
Field Name	Field Description		Field Type		Size
					(Bytes)
BFFLAG	System flags (length & status)		uns.int		4
BFLEN	Buffer length in bytes (data portion)		int		4
BFLINK	Pointer to next buffer on queue		pointer		8
BFDATA	Pointer to 1st byte of data in buffer		pointer		8
BFRESP	Pointer to response record		pointer		8

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