ZXComputing_Dec-Jan_1985.pdf

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AN ARGUS SPECIALIST PUBLICATION
H 9
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W H S M I T H
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Rumbetows
and all good computer shops.
Editor: Ray Elder
Editorial Assistant:|Jamie Clary
Group Editor: Wendy J Palmer
Sales Executive: Jonathan McGary
Advertisement Manager: Barry Bingham
Divisional Advertising Manager: Chris Northern
Copy Controller: Sue Couchman
Chief Executive: T J Connell
Origination and design by M M Design & Print,
Circus House, 2 6 Little Portland Street, London W 1 N 5AF.
Published by Argus Specialist Publications Ltd,
1 Golden Square, London W1R 3AB.
welcome
3D Bowling
CONTENTS
8 B First steps in
Machine code
Christmas
12
David Nowotnik presents his first article
in our new series on machine code for
beginners.
Why is Ray Elder sending a
message to his M u m via the pages of
ZX
Computing?
Artificial intelligence
on the OL
44
Mini Bingo
,.47
49
Tim Hartnell discusses Al
and
implements an expert system on the QL.
A superb Z X 8 1 simulation of the 10-pin
game.
Bomber Raid.... .16
Stage an assault and maintain a clear
c o n s c i e n c e w i t h our
'bomb-the-
blighters' Spectrum game.
Eyes down, look in for our very o w n
version of Bingo.
Resistor
Decipher resistor colour-codes w i t h this
very useful utility.
Carol Quiz
19
Tortoise wise
How sne parent survives his computer
literate children.
The spectrum Plus 52
Ray Elder offers some first impressions
of the new, improved Spectrum.
So, you think you know your 'Oh Come
All Ye Faithful's from your 'Hark The
Herald Angels Sing'? Prove it, w i t h our
Spectrum offering for Yule Tide!
Shoptalk
Hardware News
Software News
BookNews . . . .
Crash
A game to drive you up the wall!
55
ASP FIGHTS S O F T W A R E PIRACY
Much has been M i d and written in condemnation of
software piracy but l e w have taken a positive stand
against it. ASP is among those f e w that have taken
action to help curb the grave problem of home
copying of commercial software.
ASP has already taken steps to eliminate
advertisements In our magazines which relate to
tape duplication for piracy purposes. While it is
appreciated that Individuals may take back-up'
copies of their o w n programs, N should be noted that
it is
ILLEGAL
to copy commercialy available
software for other than personal use
Software piracy Is costing the software Industry
huge sums of money which is detrimental to the
future development of the industry, h is in
everybody's interests to dramatically reduce the
level of software piracy primarily because firms need
funds raised from software sales to plough back Into
research and development of new products. This
means that the standard of software products can
only improve.
ASP hopes our action will help combat this
serious problem in order to maintain and improve the
high standards of the UK software industry W e are
asking
you
to do the same by refraining from
duplicating or copying commercially available
software for anything other than personal use.
I n d u s t r y i n f o r m a t i o n and corres-
pondence from those within it.
This Old House . . . 29
Dissatisfied w i t h your current dwelling?
Release those pent-up frustrations w i t h
this, very homely, game.
Floppy Discs and the
Spectrum
36
Can it be done? If so, how practical
to add a piece of hardware to
Spectrum that can cost almost
times as much as the micro itself?
Elder investigates.
is it
the
four
Ray
64
Spectrum Lessons 70
Mike Edmunds tries
designed to teach.
some
software
Spectrum Arcade. 40
Action games on test!
Mindplay
63
Greg Turnbull sizes-up the latest batch of
thought provoking programs.
ZX COMPUTING DECEMBER1984/JANUARY1 9 8 5
4
•KIT™®
ZX Computing is published bi-monthly on the fourth Friday of the month. Distributed by: Argus Press Sales £r Distribution Ltd, 1 2 - 1 8 Paul Street, London
E C 2 A 4 J S . 0 1 - 2 4 7 8 2 3 3 . Printed in the UK by: Garnett Print, Rotherham and London.
The contents of this publication including ail articles, designs, plans, drawings and programs and all copyright and other intellectual property rights therein
belong to Argus Specialist Publications Ltd. All rights conferred by the Law of Copyright and other intellectual property rights and by virtue of international
copyright conventions are specifically reserved to Argus Specialist Publications Ltd. Any reproduction requires the pnor written consent of Argus Specialist
Publications Ltd.
©
Argus Specialist Publications Ltd 1 9 8 4
Club Corner . . . . .72
. . .73
Maze
We wouldn't normally advise readers to
get lost, but we'll make an exception in
this case
. . .
GET LOST in the Maze!
Blackboard... . .1521
Clive Smith provides reviews of selected
Spectrum programs.
W h y not try your hand at our Z X 8 1
Sketchpad program?
Meteor Madness .75
A fast-moving machine
game for the Spectrum,
code
space
6 0 packs of Temptation software to be
won!
Great Games
of 84
Debugger
. .153
156
The Next Step.. .128
Ray Elder demonstrates ways to improve
the performance of your programs.
Jim Watson looks back and provides us
w i t h a pick of the finest arcade games of
1984.
Problem Page
David Nowotnik answers a selection of
readers' problems.
Gobang
The ZX81 soft
Selection
132
Our regular check-sheet to help you get
that program working.
Shop Window
Sixteen pages of ideas for things to add
to your computing set-up.
Pass some time w i t h this version of
Chinese Checkers for the Z X 8 1 .
Conversion Tips .158
Due to popular demand, our special
s u p p l e m e n t t o help y o u c o n v e r t
programs to/from the ZX81/Spectrum,
now includes a conversion table for
ZX8 1/Spectrum
system-variable
addresses.
Amazing Games .100
Three games, each based around a maze
of sorts, but different in many other
ways.
139
our
Z X 8 1 s o f t w a r e r e v i e w e d by
specialist in this field, Nick Pearce.
Readers' Reviews 107
The public's chance to say what
think about commercial software.
Please note that Sinclair, Z X . Z X 8 0 . Z X 8 1 . ZX
Spectrum. ZX Microdrive. ZX Interface, ZX Net.
Microdrive. Microdrive Cartridge. ZX Printer, and
ZX Power Supply are all registered trademarks of
Sinclair Research Ltd.
Subscription rates: UK £ 1 2 . 7 0 including postage.
Airmail and other rates upon application to ZX
Computing, Subscriptions, Infonet Ltd, Times
House. 1 7 9 The Marlowes. Hemel Hempstead.
Herts HP1 1BB (Tel: 0 4 4 2 4 8 4 3 2 )
Light screen
Designer Part 4 . i r i l
Toni Baker continues the construction of
the designer, and enables some of the
keys for use w i t h the program.
Beware! This is not a game for the faint-
hearted, so Spectrum owners w i t h
strong tickers, turn to page 1 4 2 .
snap
Designs for
Living
.116
145
Peter Moore provides us w i t h another
DIY piece of hardware. This time, an
RS232
interface
for
the
Spectrum/ZX81.
An exciting ZX81 version of the fast-
and-furious card game.
.120
Partrick Cain r e v i e w s
computer books.
the
150
latest
Colin Christmas on Spectrum graphics
applications
this issue: LOGO.
5 ZX COMPUTING DECEMBER1984/JANUARY1 9 8 5
ZX Computing is constantly on the look-out for
well-written articles and programs. If you think
that your efforts meet our standards. pleBse feel
free to submit your work to us for consideration for
publication
All submitted material should be typed If possi-
ble; handwritten work will be considered, but
please use your neatest handwriting Any pro-
grams submitted should be listed, a cassette of
your program alone will not be considered. All pro
grams must come complete w i l h a full explanation
of the operation and, where relevant, the struc-
ture: Spectrum programs should be accompanied
with a cassette of the program as well as the
listing
All submissions will be acknowledged and the
copyright in such works which will pass to Argus
Specialist Publications Ltd will be paid for at com-
petitive rates. All work for consideration should be
sent to the Editor at our Golden Square address.
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