User's Manual

1. Introduction
This manual is intended to provide the information required to
diagnose and repair faults on the Z80 second processor (a part of the
BBC Microcomputer system) which was designed by Acorn Computers Ltd.
of Cambridge, England.
The information contained in this manual is aimed at Acorn dealers and
service engineers who will be servicing the Z80 second processor on
behalf of Acorn Computers Ltd.
Z80 is a trademark of Zilog Inc.
CP/M® is a registered trademark of Digital Research Inc.
The Tube is a trademark of Acorn Computers Limited.