Figure 19 intel ordering, Figure 20 motorola ordering, Table 111: motorola ordered parameter block – Ciprico Rimfire 3880 User Manual

Page 179

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User’s Guide

21020285 D

Chapter 8 Details of Usage

Byte and Word Swapping

Page 8 - 5

If written to VME memory in the order given above, these command parameters
would be written differently (as shown below) for both types of processors:

Figure 19 Intel Ordering

Figure 20 Motorola Ordering

It becomes apparent when examining the memory displays, that the Command
Structures of the RF3880 though divided into a variety of byte, word, and
double-word fields, must be considered as a grouping of double-words.

In a Motorola environment, the Parameter Block would remain as graphically
represented throughout this manual, and as shown below:

Address

Offset

Byte Memory Address

Offset + 0

Offset + 1

Offset + 2

Offset + 3

00H

Command Identifier - 04030201H

04H

Flags-2 = 01H

Flags-1 = 86H

Addr. Mod = 3EH

Target ID = 02H

08H

VME Memory Address - 005A9320H

0CH

Transfer Count = 00010280H

10H

0 = 2AH

1 = 40H

2 = 0

3 = 08H

14H

4 = F4H

5 = E9H

6 = 0

7 = 02H

18H

8 = 05H

9 = 0

10 = 0

11 = 0

Table 111: Motorola Ordered Parameter Block

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