Artesyn MOTLoad Firmware Package User's Manual (Febru User Manual download pdf (Page 247)

Appendix B

MOTLoad Firmware Package User’s Manual (6806800C24D)

247

B Remote Start

B.1 Introduction

This appendix describes the remote interface provided by MOTLoad to the host CPU via the

backplane bus. This interface allows the host to obtain information about the target board,

download code and/or data, modify memory on the target, and execute a downloaded

program.

Note:

 This feature is not present in all products that may be using MOTLoad.

 Code may also be downloaded to the target via other methods, and then executed using

Remote Start. Other download methods may be faster than using the Remote Start

interface and may be preferable to use for large downloads.

B.2 Overview

MOTLoad uses one 32-bit location as the Inter-Board Communication Address (IBCA in this

document) between the Host and the Target. This location is typically a register in the

backplane bridge device. The address of the IBCA is defined in the board product's Installation

and Use Manual, along with other board-specific Remote Start information. The IBCA is divided

into the following five sections:

 An ownership flag when set, indicates that the host "owns" the ICBA and is free to write a

new command into it. It also indicates that the previous command, if any, has been

completed and the results, if any, have been provided. When the host writes a new

command to the ICBA, it must clear the ownership flag to indicate to the target that the

ICBA contains a command to be processed.

 A ’command opcode’. This is a numeric field that specifies the command the host wants to

be performed.

 An error flag, which is used to provide command completion status from the Target to the

Host.

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Artesyn MOTLoad Firmware Package User's Manual (Febru User Manual Page 247