Acorn ARM Evaluation System User manual

user guide
ARM Evaluation System
Acorn OEM Products

ARM system
Part No 0448,001
Issue No 1.0
22 July 1986

All maintenance and service on the product must be carried out by Acorn Computers.
Acorn Computers can accept no liability whatsoever for any loss, indirect or
consequential damages, even if Acorn has been advised of the possibility of such
damage or even if caused by service or maintenance by unauthorised personnel. This
manual is intended only to assist the reader in the use of the product, and therefore
Acorn Computers shall not be liable for any loss or damage whatsoever arising from
the use of any information or particulars in, or any error or omission in, this manual,
or any incorrect use of the product.
Econet® and The Tube® are registered trademarks of Acorn Computers Limited.
ISBN 1 85250 011
Published by:
Acorn Computers Limited, Fulbourn Road, Cherry Hinton, Cambridge CB1 4JN, UK
ARM system 
iii

ID Copyright Acorn Computers Limited 1986
Neither the whole nor any part of the information contained in, or the product
described in, this manual may be adapted or reproduced in any material form except
with the prior written permission of the copyright holder. The only exceptions are as
provided for by the Copyright (photocopying) Act, or for the purpose of review, or
in order for the software herein to be entered into a computer for the sole use of the
owner of this book.
Within this publication the term 'BBC' is used as an abbreviation for 'British
Broadcasting Corporation'.
•
The manual is provided on an 'as is' basis except for warranties described in
the software licence agreement if provided.
•
The software and this manual are protected by Trade secret and Copyright
laws.
The product described in this manual is subject to continuous developments and
improvements. All particulars of the product and its use (including the information in
this manual) are given by Acorn Computers in good faith.
There are no warranties implied or expressed including but not limited to implied
warranties or merchantability or fitness for purpose and all such warranties are
expressly and specifically disclaimed.
In case of difficulty please contact your supplier. Every step is taken to ensure that
the quality of software and documentation is as high as possible. However, it should
be noted that software cannot be written to be completely free of errors. To help
Acorn rectify future versions, suspected deficiencies in software and documentation,
unless notified otherwise, should be notified in writing to the following address:
Customer Services Department,
Acorn Computers Limited,
645 Newmarket Road,
Cambridge
CB5 8PD
ii 
ARM
system

Important Information
Wiring the Mains Plug
WARNING: The ARM Evaluation System must be earthed.
The wires in the mains lead are coloured in accordance with the following code:
Green and yellow

Earth
Blue 
Neutral
Brown 
Live
As the colours of the wires may not correspond with the coloured markings
identifying the terminals in your plug, proceed as follows:
• The wire which is coloured
green and yellow must be connected to the
terminal in your plug which is marked by the letter E, or by the safety earth
symbol or which is identified by being coloured green, or green and yellow.
• The wire which is coloured blue
must be connected to the terminal which is
marked with the letter N, or coloured black.
• The wire which is coloured brown
must be connected to the terminal which is
marked with the letter L, or coloured red.
If the socket outlet available is not suitable for the plug supplied, the plug should be
cut off and the appropriate one fitted and wired as previously noted. The moulded
plug which was cut off should be disposed of as it would be a potential shock hazard
if it were to be plugged in with the cut off end of the mains cord exposed. The
moulded plug must be used with the fuse and fuse carrier firmly in place. The fuse
carrier is of the same basic colour (though not necessarily the same shade of that
colour) as the coloured insert in the base of the plug. Different manufacturers' plugs
and fuse carriers are not interchangeable. In the event of loss of the fuse carrier, the
moulded plug MUST NOT be used. Either replace the moulded plug with another
conventional plug (wired as previously described) or obtain a replacement fuse
carrier from an authorised Acorn dealer. In the event of the fuse blowing, it should
be replaced, after clearing any faults, with a 5 amp fuse that is ASIA approved to
BSI 1362.
Exposure
Like all electronic equipment, the ARM Evaluation System should not be exposed to
direct sunlight or moisture for long periods.
iv
 ARM system

Contents
1. Introduction 
1
2. System components 
2
3.
Installation 
4
4. Operation 
6
5. Appendix A

7
5.1 ROM software 
7
5.1.1 BBC Microcomputer Model B and B+

7
5.1.2 Inserting ROMs

7
5.1.3 Sideways ROMs' operating priorities

9
5.1.4 Inserting the chip

11
ARM
system

v

1. Introduction
The ARM microprocessor is mounted on an evaluation board which runs as
a co-processor to a BBC Model B or BBC Master Series microcomputer and
supporting peripherals.
This document defines the complete evaluation system, comprising either of
the computers mentioned above, the ARM co-processor, supporting disc
drives, monitor, interconnecting cables, ROMs and documentation.
It describes how to install and operate the system and provides a check-list
of the required component parts, discs and documentation.
An operational description of the co-processor is also given.
The discs included in the Evaluation system are Acorn ADFS format discs.
If your equipment is unable to read these discs you should purchase the
following two items from an authorised Acorn dealer.
Product Code Product name
ANB29  ADFS ROM kit
ANB28  1770 Upgrade kit
Clearly if your system already has a 1770 disc controller then only ANB29
will be required.
ARM system  1

2. System components
An evaluation system should be made up of the ARM Evaluation system
itself plus a number of other components. A complete system should be
made up of the following elements:
(1) A BBC Model B or BBC Master microcomputer computer
(2) ARM co-processor
(3) A monitor
(4) A twin, double density, double sided, 5.25 inch disc drive
(5)
A Winchester disc unit with a suggested minimum of 10 Mbytes
capacity
(6) Interconnecting cables:
The cable for the connection between the ARM co-processor and the
ACORN computer is supplied with the ARM co-processor. It is
captive at the ARM end with a connector at the other end for
attachment to the TUBE I/O socket on the ACORN computer
Otherwise, all the connections are made in the usual manner using the
standard cables supplied with each unit.
(7)
The software, all of which is supplied on 5.25 inch floppy discs, is as
follows:
•
ASSEMBLER
•
UTILITIES
•
TWIN
•
BBC BASIC
• LISP
• PROLOG
• FORTRAN
• C
2 
ARM system