[Principle references]
----------------------

Title:		The New Advanced User Guide
Subtitle:	for the BBC Master, Compact, B, B+ & Electron
Author:		Mark Holmes & Adrian Dickens
Publisher:	Adder Publishing Limited, Cambridge
Date:		1987
ISBN:		0 947929 05 3


[other references]
------------------

Title:		The BBC Microcomputer User Guide
Author:		John Coll (edited by David Allen)
Publisher:	British Broadcasting Corporation.
Date:		1982
ISBN:		0 563 16558 8

Ideas from:
BBC Emulator, Ian Stephenson. Based upon Apple ][ Emulator by Ben Koning

Stephen Youell has provided much discussion and input. In particular a
fruitful discussion on the memory system and speeding up zero page access.
