HP Advanced Communications Controllers (ACC) Guida Utente Pagina 95

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ZCOM Tables and Data Structures
Interface Table
Chapter 3 95
Mux card firmware. The Status buffer contains the data returned from a
$STDT transaction. This data is updated into the physical terminal
tables by the DAM. The actual area being used is offset by the number of
bytes specified in IFBOFF. This area is accessed by the pointer set up in
the corresponding pointer fields IFIRQBP, IRESPBP, ISTDTBP. These
fields are not used for ACC E1/T1 cards.
ISCRATCH - Scratch area for buffer alignment
This area is needed to insure that DMA buffers can be aligned on a
64-byte boundary. This is a requirement of the hardware.
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