Ciprico Rimfire 3880 - Manual (Page 7)

User’s Guide 21020285 D
Conventions Page iii
Conventions This manual incorporates the following conventions:
Notational 1. An upper case letter H following a number indicates the number is a
hexadecimal value (e.g., 32 = 20H and 255 = FFH).
2. In this document, a byte is defined as an 8-bit quantity, a word as a 16-
bit quantity, and a double word as a 32-bit quantity.
3. This manual represents all memory ordering in the Motorola format.
This means that the least significant byte of a double word is placed in
the most significant memory location. For a further discussion of
memory ordering and information to use Intel ordering, see Chapter 8.
4. The title of this manual, and all references to the adapter throughout,
express the name of the product as Rimfire 3880. This name is a base
model number representing a series of product offerings with
differences that are noted in the text of this manual when pertinent.
Graphic To explain the RF3880 command structures and describe the breakdown of the
command structure into fields, (double-word, word, and byte wide) this manual
represents the command structures and fields graphically, as they would be
placed in memory.
Throughout this User’s Guide you will find the command structures graphically
represented as shown below.
The left hand column and top two rows of the above table provide a reference
for the position of the components of the structure in memory.
Address Offset - The grey-shaded area on the left is named Address Offset.
Since the structures are double-word wide, these hexadecimal values, added to
the Starting Memory Address, reference the beginning of each double word in
the structure.
Byte Memory Address - The area at the top of the graphic is the Byte Memory
Address. This displays the ordering of byte-wide fields of memory. Each of the
four “Offset + x” fields describes the relationship of byte fields to the Address
Offset.
Address
Offset
Byte Memory Address
Offset + 0 Offset + 1 Offset + 2 Offset + 3
00H Double-word
04H Byte Byte Word
08H
0CH
10H
14H
18H
Table 1: Graphic Representation of Parameter Block