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The latest update from Britain's national electronic mail service.

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Sprite designing made easy

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Vol. 2 No. 2 June 1986 Derek Meakin Andre Willey Peter Glover Heather Sheldrick Christopher Payne Mike Cowley AdvertisementManager:John Riding Advertising Sales: John Snowden Editor in Chief: Peter Bremeld ManagingEditor: Technica/Editor: Production Editor: Art Editor: Reviews Editor: News Editor:

Editorial: 061-456 8835 Administration: 061-456 8383 Advertising: 061-456 8500

Subscriptions: 0614800173 Telecom Gold: 72:MAGOOi Telex: 265871 MONREF G Qummg Ref-721MAG001 Prestel Mailbox. 614568383 _

Pub?shed by: Database Publications Ltd, Europa House, 68 Chester Road, Hazel Grove, Stockport SK7 5NY.

Subscription rates for 12 issues, post free: £12 £15

530

~ —

‘

UK Europe Overseas

(A'fma'li .

"Atari User" welcomes program listings and articles for publication. Material should be typed or computer—printed, and preferably double-spaced. Program listings should be accompanied by cassette tape or disc. Please enclose a stamped, self-addressed envelope, otherwise the return of material cannot be guaranteed. Contributions accepted for publication by Database Publications Ltd will be on an all—rights basis. o 1986 Database Publications Ltd. No material may be reproduced in whole or in part without written permission. While every care is taken, the publishers cannot be held legally responsible for any errors in articles, listings or

advertisements. "Atari User" and '.‘Atari ST User" are independent pubiicalions andAtari Carp (UK) Ltd are not responsible for any of the articles they contain or for any of the opinions expressed. News trade distribution: Europress Sales and Distribution Limited, Unit 1, Burgess Road, Ivyhouse Lane, Hastings, East Sussex TN35 4NR.

Tel: 0424 430422. 4 ATARI USER June 7986

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to Boulderdash, The smash-hit sequel US Gold 5 Arcade 4-pack; Budget car racing fun from Mastertronic; Skramble with great graphics; look-alike a football team; Arcade Manage action in a helicopter Games to suit

1

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all tastes.

Game Have even more fun playing our Cavern Escape game from last month by designing your own mazes.

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Graphlcs Learn hOW to edit your own sprite data seCOnd part Of our great new Fhe series on Player Missile Graphics. ,

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Compiler

Five Liners

The final part

series by Frank our Start O_Dwyer. usmg your compiler With procedures and mtefrupt driven routines.

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From Interrupts and pound Signs to Fried Goldfish .We answer your questions and problems. -

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Two completely dlfferent approaches to the same how to give your SZOST a massive 1024k problem

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Take your chouce of two specual offers if you subscribe to Atari User this month There's the Last V8 from Mastertronic for the 8—bit range and a super deal 0” discs for the ST range.

§§§§f §§§> 5

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49

rolling.

3

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The start of a new series in which we invite readers to submit five line programs. Len Golding starts the ball

29

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Andrew Bennett gives you more hints and tips on the ST, and answers

‘ .

some of your queries.

June 7986 ATARI USER

5

8 +16 BIT HARDWARE & ACCESSORIES 5205TM(withModuIator) ..................,............£399.99 SOON SZOSTFMasabovewithBuilt—iniMeg.Drive

10408Twim1Me 9. BuiIHHD?VHMonoMoniwr .

8-BIT SOFTWARE Bomderoash"

£92000 -

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KlngoftheRing................................,C/D

104OSTasabovewnthColourMomtor....................£1,149.98

ZoneX

...._............................£149.99 PhilipsgCM8533ColourMomtor...........................P.O.A.

NatoCommander.:.:.“UH.““H“.HHHH'

£19999 3F3141M99-Di?k0'iye Meg.D|skDr|ve $53.54

MonnorCabIe...............................................£19.95

MPdemCab'e----~--~-~~---~~-----~~~~-----~----~-~-~--~---“9-95

anerCabIe.........................,......................£19.95

LX80EpsonNLOPrmter........................................P.O.A.

Eacmhun"-~~A-~~--~-~~----~----------~~------------523-00 C“Shee'Feederw~~~---~-~-~~-~--~----~--~--~~~-----£5300

13°XE‘28KCOmPUtef-~~----~---~~-~~~~~-~-----~--~----~~-5129~95 CX”DEMRgcofdefm-~--~--~--v-~~--~~-~-~~~-~------~-~~~--534-95 105005"Dr”?---.---~-~~--~-~--v--~-~-~--~~-~-~------~-----f129-95

1029DotMatnxPr|nter.....................................£119.99 T°_“°hTab'et---------~~-~-~-~-~----~-~--»-~----------529-95

102°Pf'meHP'Ot‘e'WO'J-~-~~---~-~~----~~-~-~~---~-~-----f79-95 WSZOOOMOdem----_--~--~--~--v----~-~~-~-~----~----~~------P~0~AWS300°Aut°Ans/D'a'---------~--~~---~-~~---~~-~-~~-~~-f299-99 M°USEMGIS--_--_----~-~-~-----~--~-~-------v-----~~-~~--------P~0~AZWOSheetSF'S'mPaDef--~-~~-~~~-------~~---~~~-~-~-~----1519-95 RX/FX/MXR'bb°“s~~-~-~---~-~~~--~~~~------~--~~------~-~--f5-95 P‘QOR'bb°“S-----~~-----~--~~-----~~-------~---~~-~-~--~~--~--f4-95 ST..5YS‘ems‘a"dS-~~-~-----~~A---v----~~-~--~-~-~---~~--~~529-99 3-‘5,,°!Ske"es~~~~~~~~~~~~~~-~-~~-~-------~~~~~---~--~ea°hf3-99 5/~,,D!S'“‘Mes eachf199

3-‘5,,D!“BOX~--------~~~-----------~-~~--~--~---«--------~-£2439 D'SKBOX--~------~-~---:~~---~--~~-~-»-~--~~~--~--~--524-99 “X/FX/MXB'Ue'RedlswwnR'be"--~--~-~~--~-~--~-~----~~~f7~95 VouceMaster..................................,.............£61.95 5/4

STSOFTWARE STACCOUNTS—CHIPSOFT'ST'.........,....................£149.99 Toolbox...................................,.................£29.95 Forth£4995 Basefgggs AIIInfocomAdventures.........................................P.O.A. KRam£2995 KSeka£4995 K-Spread....................................................£49.95 Laserbase........,...,,,...,.........,..,...,,,_,,,,,,,,,,_,£9935 Hex£3995 PCImercomm(VT100TerminalEmulator).....................£129.95 TheFinaIWord £15000

C.0.L.E.ObjectEditor.........................................£34.95 DiskDoCtor..................................................£29.95 Maps&Legends/TheCartographer............................£34.95 Degas£3995 HabaMerge....,,......,......,,...,.,,.,.,.,,,,.,,_,,,,,,,,[39,95 HabaDex....................................................£59.95 HabaHippo'C'...............................................£74.95

HabaWriter.................................................£74.95

Devpac£4995

NEW TlTLES FROM SECS OperaHWSE/PaYO“~-~~~~~-----CA55---~-----~--AT/CG4

“39

QA'~----~--~-m---~---CASS---------~--~~---~--~AT/C64 f2-99 TheFamilvGame-~~-~n-----v-u-CASS-n-uu-un-WAT f2-99 OperaHOUSE/QA’~~--~~-~-----~-D'5K4~-~~--~--~--AT/CG4 f6-99 FontConstructor..................DISK..................AT £6.99 G°F°nh------~~~---~-~----D'SK-~----~-----~-~----AT {24-99 TheFami'YGame/

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ALUM ROCK ROAD ALUM ROCK BIRMINGHAM 33

PLEASENOTE: ALLORDERSTAKENWITHEITHERFULLPAYMENT ORDEPOSITWILLNOTBECLEAREDUNTILYOURORDERISREADY TOBEDESPATCHED-

6 ATARI USER

June 7986

'

mgAue'y'A'cgzzzz::::::"':::::::'"""""""C/D £9.95/f14'95 """"""'~'C/D [14-95/?7-95

KennedyAppmach

C/D £9.95/f12195

SoloFlight.................................,.,....,,,._C/D £14.95 £14.95/£17.95 F1581rikeEag|e.......,.......................C/D SpyHunter.....................................C/D £9.95/£14.95 Up'n'Down....................................C/D £9.95/£14.95 Tapper.........................................C/D £9.95/£14.95 Ballblazer......................................C/D £9.95/£14.95 DesignersPencil.......................................Can £14.95 Eidolon................................................Disk £14.95 FutureBaIl..,..................................C/D £9.95/£14.95 Hacker.........................................C/D £9.95/f1435 Ghostbusters..........................................Disk £14.95 RescueonFractalus.............................C/D £9.95/£14.95 Past?nder.............................................Cart £14.95 PitfallII................................................_Cass £9.99 SpaceShume...........................................Cass £9.99 AmericanCCRoadRace.........................C/D £9.95/£14.95 KoronisRift...............................,............Disk £14.95 Cutthroats?nvisiclue)..................,.,......D/B £29.95/£6.95 DeadlineUnvisicIue).............................D/B £22.95/£6.95 Enchanter?nvisiclue).......................,....D/B £39.95/£6.95

£27.95/£6.95 £39.95/£6.95 £22.95/£e.95 £22.95/£6.95 £39.95/£6.95 £39.95/Soon Spellbreaker?nvisiclue) D/B D/B £29.95/£6.95 gtarcrossUnvisiclue) £34.95/£G.95 uspect(|nvisiclue)..............................D/B £39.95/£6.95 Suspended?nvisiclue)...........................D/B £29.95/£6.95 Wishbringer_(lnvisiclue)---.--...-................D/B £39.95/£6.95 WitneSS(an|S|clue)..............................D/B zOkalnviSiC'ue)~-----------.----.-.-mm“...D/B £22.95/f6.95 Zorkll(|nvisiclue)...............................D/B £29.95/£6.95 Zork_|||(_|nvisiclue)..........,.....,.,._,_,_,,,,,.D/B £29.95/f6.95 AtarlwmerPlus........................................Disk £59.95 £19.95 FinalLegacym...m.----..-..........................Cart CombatChess.........................................Disk £29.95 £49.95 JupiterMission1999...................................Disk MarketForces.........................................Disk £21.95

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HitchhikersGuidetotheGalaxy(|nvisiclue)........D/B

InfideHlnvisiclue)...............................D/B Planetfall?nvisiclue)............................D/B Seastaler?nvisiclue).........,..............,...D/B Sorcerer?nvisiclue)....................,........D/B

ChampionshipLodeRunner................,............

DiSk 015k

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£29.95 L0_deRunner...........................................Dgsk £25.95 £39.95 Prgntshop..............................................Dgsk £21.95 PrintshopGraphlcsI....................................Dlsk £21.95 PrintshopGraphicsIl...................................Disk PrintshopGraphicsIII...................................Disk £21.95 anshopPaper.........-.-............................chs £19.95 MaskoftheSqn.......................................Dgsk£39.95 AIternateReahty...................,...................Dgsk £39.95 £39.95 TempleoprshaiTrilogy............,...................Dusk £29.95 TopDosVersion1.5....................................Disk £24.95 StarLeagueBaseball...................................C/D StarbowIFootbaII......................................C/D £24.95 Karateka

az?zf'tarrz?gtAuschmer

Goonies........................................C/D

ZorroC/D ZaxxonDlsk PolePosition....................................C/D BruceLee.............................................C/D ConanDlsk MrDoCass PacmanCass

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C/D £995/£1495 £9.95/£14.95 £9.95/£12.95 C/D £995/£1295

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TELEPHONE

8:2}:

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£9.95/f14.95 £9.95/f14.95 £14.95 £9.95/£14.95 £14.95 £14.95 £9.95 £9.95

H?lllllE (021) 328 3585 se n d me

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__-——_————_—-BEING developed by for Andromeda Software next release by Mirrorsoft month is ST Art. This paint program will handle both gra— phics and text, produce an A4 printout for instant leaflets, and offer a cyclical display facility With simple animation. it will be compatible with the ST version of Mirrorsoft's per— Street

Editor, due to be laun—

— THE 5205T-based computer package that spearheaded the rebirth of Atari under has been Jack Tramiel phased out. Having served its purpose of achieving a foothold in the UK serious user market, the original £749 configuration of micro, monitor, external disc drive and

— _

‘

o“Poo

—

professional program and a cut for the home, education and small business market. Also promised by Mirrorsoft for the ST are Strike -Force Harrier and Spitfire 40 for flight simulation fans.

down

-———-——

Accounts suite A SUITE of integrated

accoun—

ting software for the Atari ST range has been released by

International

Systematics

Microsystems. The range includes General Ledger and Financial Planning, Sales Ledger, Purchase Ledger, Invoicing, Stock Control, Payroll and Job Costing. Prices range from £250 to

£450.

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This includes the 5ZOSTM, 104OSTF and the soon—to—be— available 5203TFM. Since the basic 5208T would be of little use without its own includes monitor. the szosw

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modulator which allows connection to a domestic

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Although the operating TOS/GEM system provided in ROM,you buy an external disc drive to actually do anything with the machine unless you want to wait for the new cartridge— based software to be released. Atari's 500k drive, originally supplied with the SZOST, costs £149.99 and the 1mbyte ver— is now must now

—

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No price has been set for this latter package, but it is likely that two versions will be a full—blown published

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breed of Atari tech-

the new

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£199.99. Alternatively, AST has Southend-based produced an ST compatible 1mbyte driveforthe surprisingly low price of £99.

sion

—

There is still no information as to when the SZOSTFM with

built~in

disc drive

available,

although

a

will

be price of

£499.99

has been announced. For those who still want to buy a bundled machine at an all—in price, Atari’s 1mbyte monster with a built—in 1mbyte drive the 104OSTF is available with a monochrome monitor at £799, or with an RGB COlOUl’ monitor at £999—

—

—

THE proceeds ofa lost property sale by police has helped buy Atari machines for a youth club project. One of the computers, an Atari 130XE, was taken from the Honor Oak Youth Club, Lewisha m, a nd used for at a national demonstrations conference on computer workln the Youth Service aboard the Royal Princess on the Thames.

The club’s senior youth worker, Mike Fordham, said: “We have four Ataris two 800XLs, a 130XE and a 5208T with disc drive all bought by —

—

donations from friends of the an educlub, Inter—Action and local cational charity —

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no one

will even be able to get a job stacking shelves unless they can use a

computer”. Atari has already funded the buying of machines for youth clubs andin the past also loaned

use

at

com—

The company also donated two 800 XLs to Inter—Action and Community Computers UK, who help link organisations to potential backers. The Ataris are helping trans— form Britain’s YOUth C|Ub5 into job springboards, according to Ed Berman, founder oflnter-Action, an educational, non—profit making charity,which aidsclubs and organisations. OThe Department of Education and Science hasjust announced a £75,000 grant over the next three years to Inter—Action for

their

youth club computer

projects.

— June 7986 ATARI USER

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Postage. Add £1.00 per item for overseas orders.

BITS & BYTES COMPUTERS (Ltd). Mail Order Dept. 40-42 Balmoral Road, Fairfield, Liverpool L6 N F. Tel: 051-264 7362

FOR THE

ATARI 1040 STF Mono Colour

799.00 999.00

+ +

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FOLLOWING major deals with two top independent software houses a new series of Atari ST adventure from Rainbird games Software is in the pipeline.

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Adventure Quest — as a disc at £19.95 for the Atari ST and a triple cassette at£15.95 forthe 8 bit machines. A second multi—Ioad

advent-

ure, provisionally called Knight Orc, is due out in September, with a third, probably a three—

cassette package,following two months later. 0 Picture shows Rainbird's adventure teams (left to right) the Level 9 brothers—and—sister team of Mike, Peter, Nick and Margaret Austin, Mike Clark, Tony Rainbird and Paula Byrne of Rainbird Software and Ken Gordon and Anita Sinclair of Magnetic Scrolls.

ii. it:

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§

Dungeon Adventure

Rainbird enables us to continue our research into natural language and other artificial intel— Iigence-related projects". Level 9's deal was signed by Peter Austin,one ofthe partners in the brothers-and-sister com— pany. He said: ’We expect a substantial increase in advent— ure playing and Rainbird is prepared to support our products in a unique way". Rainbird will initially market Level 9’s re-written Colossal triology — Colossal Adventure,

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authors GAMES publisher Superior Software is looking for people with new ideas for programs for the Atari range. The firm is offering a free guidebook, Top Tips for Games Authors, which containsgeneral advice about selecting suitable software publishers and writing games software.

Sales Campbell

manager

Ken

"The

rewards can be

says:

for games authors enormous.

"Tim Tyler, one of our authors, who is only 17, has amassed more than £35,000 in royalties over the past year and that figure is still increasing week by week"-

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Anita Sinclair, managing director of Magnetic Scrolls, said: “This agreement with

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The recently—released The Pawn is one of seven disc-based adventures to be written for Rainbird over the next two years by Magnetic Scrolls. Level 9 Computing has also signed an agreement to provide three Rainbird products for the Atari ST over the coming year. After meeting program auth— ors from the two companies publisher Tony Rainbird said: "Part of the Rainbird expansion will involve reversing the cur— rent trend ofimportedAmerican software, to which end we have already made a considerable on the American impression market with British games and

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new joysticks

for the Atari

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games machines have been launched by Palan Electronics. The Fantastic lll has rapid— action dual electronic fire buttons suitable for both left and right handed players. It also has eight directional movement with auto—centering and auto-fire control and comes with a two metre cord. Price:

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ATARI 3 ST

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£6.95. The Quickshot

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microswitches with auto-fire capability and two fire buttons so users can shoot with thumb and triggerfinger.Themechanism can be locked to allow a continuous burst of bullets. Single—handed video game play is possible with the Quickshot Il Plus as a result of the built-in suction cups. It costs

£12.95.

NEW version of CashLink has been produced bY CashLink for the Atari szoST. The program, designed for

A

Accounts small

to

medium-sized

businesses, takes advantage of

windows

and pull—down

menus.

Itoffersacomplete accounts department, handling all credit accounts and cash sales, with full accounting Iedgers and

AGBHUNTS

n” MEN” records of stock.

CashLink Accounts costs £295. A full accounting package with Atari 5208T, disc

drive, monitor, printer and accounts program is offered at £1150.

first of printers for its

has launched the

,

Of

-

The SMM804 d°t matrix 80 column printerintroducesanew line Of high speed printers that Wi" be Of integrated design to complement the 16 bit ST range. ROb Harding, Atari UK'S marketing manager, said: M" is our intention to become the major supplier Of all kinds Of

printers

including the daisywheel,dot matrix and laser models during the next 12 to 18 months. 'They will all be priced at affordable levels in order to sell in substantial volumes”. The SMM804 costs £199. June 1986 ATARI USER

9

'

GAME that cost almost £30 when it was first imported from the USA is now on sale for just £2.99 for the Atari 8 bit A

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"S’de the ST THREE new books for the Atari

from

come

First

Publishing. The Anatomy of the Atari ST includes detailed descriptions of the sound and graphic chips, internal hardware and a fully documented BOS assembly “S_ ting. Gem the Ata” ST gives _on the Gem operatinformation o.“ ing system m easy—to—follow .

.

.

language.

.

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“3275'sizslnggrsnggdl'i’:

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£12.95

ATARI will be competing when tenders are invited by the Royal Navy to supply standard micros for floating for its junior classrooms officers and young sailors.

Theideaisthatbyprovidinga

have a Some warships of computers bought

understand.

Ship

Spokesman-toldAtar/User:"lt the intention to purchase a for standard computer all.our

recreation, offiCially installed. computers

of perforanalySis of missnes, guns and mince er weapons. ot But the Royal Navy wants 3 standard machine capable of helping sailors' basic education in mathematics, English and

subjects,

well

as

70 ATARI USER

machines. Rob

Harding, _marketing of Atari, said: "We are director very interested.to hear about this opportunity to prowde for the Royal Navy. computers The STrange offers‘unbeat— _

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MORE than £400,000 has been invested by distributor Twillstar Computers to improve its ser— vices for Atari users. Over the last three years at its busmess boomed so rnuch West London shop—just 750 sq forced to ft the company was move to larger premises:

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June 7986

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requiring many additional

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GERM warfare is the theme of Firebird's Atari 48k release, the Comet Game. It comprises three phases in which there is just one chance to save the world from germ bags that infect a look—alike Halley's Comet. The aim is to hit enough of the germ bags to stop a colony reproducing and infesting the earth's surface. Price £7.95

an ice—patrol vessel, eight survey ships, and a number of frigates, which would all need the larger vessels computers

able value both and in price and is also very ofsailors performance ships-forthe education junior e 5T w anhd at type 0officers er WI e is provmg compu atfloat._”Bt;itfleXiblre. very installed will of course depend popular at all levels ofeducation on the competitive price of the and should suit them perfectly. tenders". “A number of educational. The Royal Navy at present packages will be ready for the has 25 submarines, three air— ST in the near future”.

needed for

other

Ministry of_Defenc'e is

A

funds for StUdY and as well as the

5

craft carriers, 14 destroyers, four Fleet tender training ships,

previously

standard computer a step—by— step teaching system can be worked out so sailors can learn either computerised operational work or CSE and GCE subjects at their own pace and be able to go back over parts they do not

variety from

courses

professional

taught ashore.

Britain has had to double the number of sailors in sea—going jobs, cutting the-time spent in ashore. educational training

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adventure, is one of four bargain priced arcade games from America now being sold under licence by US Gold in Britain. The Americana series also includes New York City, where dangers lurk at famous landmarks, Scooter, a multi— level three dimensional game, and Ollies Follies with 16 screens of action—packed challenges. All cost £2.29, and are available on cassette only.

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Upgrade the 520 ST to one megabyte and add the professlonal look from under £100. 0 °

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The AST-520 MEMORY CARD upgrades the standard 520 ST to ONE MEGABYTE of RAM, and costs under £100 inclusive of VAT!

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The AST-2080, goves even further, brings the RAM to TWO AND A HALF MEGABYTES for less than £400 inclusive!

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You can give your ST a really profeSSIOnal look With the AST SYSTEM CASE It can hold two 3.5 inch, and one 525 inch ?oppy drives, or a Winchester drive together with the ST power supply units. The Monitor can stand on top. The System case will improve your viewing angle and leave your desk uncluttered. PLINTH now available in two styles:

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COMPLETE ATARI 520 ST SYSTEMS ’

i

We can advise, install and support complete ST systems. Please call for a quote Below are some examples: Hires Monitor, SF354 360K 1) 520 STM, SM124 disc drive, TOS in ROM, standard software on disc —

—

5T, one Megabyte RAM installed, 160 CPS matrix printer With NLQ mOdei SM124 Hires Monitor, twin AST drives (2 X 720K), AST Plinth, TOS in ROM and bundled software

AST Disc Drives are all 80-track double-sided, offering 720K (one TWICE the storage capacity of the megabyte unformatted) standard ST drive. They are available in 3.5 and 5.25 inch formats. The drives are daisy chained to the standard ST drive, using the power and data cables supplied.

2) 520

dOY

~

—

on disc

£1050

----------------

PRICES AST5520 MEMORY CARD, free

fitting* £9999

AST-2080 MEMORY CARD (Available Soon) free

fitting" £39999

3.5ins DRIVE, cased, with leads £9900 5.25ins DRIVE, cased, with leads £10900

DIRECT FROM AST and SELECTED ATARI SPECIALISTS Advanced Solutions Technology Ring SOUTHEND (0702) 618 201 (5 Lines)

AST (Advanced Systems and Techniques) Limited

87 Bournemouth Park Road

Southend-on-Sea Essex 552 SJJ VISA and ACCESS accepted

, .. _

NEW.' Battery-Backed Clock Cartridge Ringfor a lea?et!

---------------,. ‘

‘lnslolling the RAM upgrades will af/ecl your guarantee, which will be replacedby own guarantee. AST will install the upgradefor you, free o/ChOVQEi 01 our For [he AST-520RAM upgrade,you can send in your ST keyboard with £103 to include board and return postage (£110 i/Interlink next-day service 15 require payments;

AST’S

premises.

.

———_—_—_—__

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Airlines guide goes

Ml?B?LlNK TRANSFERS SPA BE P

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kin progress. the wor n ideal solfhe only one, uwean/(33331255 a lthe problem °f ?nding “may i/Cehiclewith a high said after his drag ratio", he

ersonic Sneads 0“ M CR 0 U N K 3215 waves produced hi? bveitaanl3.128 t° “We" Prom emuni— by its leading edges“ transatlantic The project has attracted will _C°tn1?hat

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the cati?2zg?;a?jgi\ecback even (fag/3mm“

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Ofto mafia:

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on- Ine AIRLINE travellers with . . .

a .

Zlazicnepnntzriezlo angles-fig]; 5r:?vjesl'lgirlcyl-ag?rei3aiifornia ins?gzrliink's role in the A more which is to project lslygggkl:?n?gi:>rlilgs?v zrcng/e—f/regl ZFtrisfaofrasti'::Sdlg andarrange— or? sun. of the '

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Association S_°°t_ effichem rm: i'tarfwo n-iiles m ll:nation from see mining |and To Research int_° Americans Wlt-rre otiand to the Jet in is Astra lSco Astronautics FXper" as the most eridef Laboratory in menting With the desngn Ofeal ghous contender for the role moguls?“ spacecraft of Starprobe transporter Cal‘xinnd' tunnel test data that'lcouittjoggi‘ll’lg into far millions constantly it because still cantravel and other data are Oftémlzrietand bY assimilated space encounter being frmnisltaanzftclOZe ‘eaamghgronrgsghz er, antjpitaz‘:

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fhe gravitational foreifog in the manner

on a concept is it ihebszztl aas Waverider, at krioir?lrt‘ed20 years ago

each

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on to

as a cost—effective

member of the

9 "ans afng'rasglid '

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assed

Lion arepossible. Therefore; we have turnedto MICFOL‘Qd

Sta?dfggeizamJames meani a spo g:[32:18 to Scotland

meessor dolph, Tel-erllceveh¢i)cle t 8 weiier, where

n ALL the world’s a stage, and nowhere more so than

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London where theatregoers have a choice of over 40 glittering, shows. Now, in association with renowned booking agency Edwa rds & Edwards,

MicroLink

can

reserve

your

seat in the stalls at any of them. TheatreLink is a new ser— vice from MicroLink incorporating every play, musical, thriller, comedy and opera —

plus major reviews

and

cabarets being presented in the capital. This cornucopia of enter— tainment ranges from the evergreen The Mousetrap, through old and new favour—

“I

r

ites like Blithe Spirit, Cats and Run For Your Wife, to the new musical Time. To help you make your choice, the menu not only

givesafullalphabeticallistof every show currently running in London but also breaks it down into categories such as musicals, plays, comedies, thrillers and so on.

And

as

well

as

perfor—

times and seat prices, each individual show listing contains the names of the stars appearing andahelpful description of its theme. Bookings on TheatreLink can be made 24 hours a day, seven days a week up to the day before the performance you wish to attend. Seats for mance

YOUR chance

is that MicroLink now rovides in— stant round-the-Z'lock information from the bible of

globetrotters,

the Interna—

tional Officia/Air/ines Guide. Known as OAG, it offers the very latest data from more than 750 airlines details of wor/djwide, .with

7Tll£17i'2.‘/Z;7LninfllrliZifscriberscan

has been

l

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ment‘f’smlca The reason

be connected within seconds via sate/lite to the OAG computer in Oak Brook, Illinois, which monitors the 38,000 changes in fares which take place daily, and the 30,000 weekly schedule revisions.

Friday and Saturday perfor— mances must be booked at least two days in advance. Reservations will be con-

And GAG is a real money-saver because all the fares for each airline 0’7 any

firmed within

given route are “0933/17/59 from the lowest to the

on your mailbox an hour if you book

between 10am and 4.30pm, Monday to Friday. Tickets will be charged to your credit card and either posted to you on the same day or held at the box office of the appropriate theatre. Theatre Link is menu driven for maximum user— friendliness and also incor— porates a section giving all the latest show news and a breakdown of which theatres still have seats available for the curperformancesduring rent week.

to 10m MICI‘OLInk

—

h/ghest. The service also boasts an elapsed time feature WhiCh takes into account any stopover time during f/fghtS, thus enabling the passenger to 89/6“ the/ourney With the ShO?GSt possible duration. The OAGserviceiseasyto use.

/t

Wi// accept

fU/l

spellings Of airline 001193 Of and the user destinations, can 59/90? information either by single line entries 0’ by using prompts 0'7 the

system.

Page 39

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NEW York, New York, so good they named it twice! This is a debatable fact for those who have spent any time there, but one good thing to come from the Big Apple is Philon.|t's one of the most professional of the software houses currently writing for the ST.

.

I

| "

You can create floor plans, landscape design, architectural de— signs, or simply draw pretty pictures. The printed results are very good, with the, ability to print either a landscape picture or a portrait. Apart from owning a 13OXE and a SZOST, also admit to an IBM XT. Until recently the IBM was very useful because, in the course of my working week, need a very powerful relational database. DBase II did the until received a job excellently package from a company called Holmes and Duckworth. I

Two products have emerged from this company Henry's Fundamental Basic and Fast/Basic M.The former is an introductory language which can be used by first time users through to advanced Basic programmers. The package contains a whole host of built—in features but, more importantly, it is upwardly compatible with —

the second package. /

.

-'

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Fast/Basic M is Microsoft MBasic

compatible, which means that pro— grams can be transported from other micros. The two packages representa strong opposition to the current Atari ST Basic and the price will not break the bank. Henry's Basic will retail for £49 and Fast/Basic M for £99, Philon also plan three more titles to add to the ST library Fast/C, priced at £125 and Fast/Fortran and FastCobol at £249. The graphics aspect of the ST is an exciting area for many people. The sheer resolution of the ST graphics handling makes the machine a must for creative people, Degas was the ?rst to illustrate the power of the machine’s graphic capabilities, and we are now starting to see more graphic packages arrive on the scene. Xlent Software has produced three, one of which, Typesetter, claims to be the perfect tool for layout and design. found it interesting in as much as you can load Degas pictures into the program and reduce or enlarge them and add text, At £39.95 it represents a good utility to use alongside Degas. Moving on to the real professional programs we find Easy-Draw from MiGraph which is truly excellent. if you have ever had the good fortune to see Gem Draw this package will

I

—

H

&

amaze you.

I

basically DBase ll,

but for the 520/104OST. You can even run DBase II files created on another machine without any alterations. lt retails for £99.99, and should turn out to be the software package of the year for the serious business user. For the 8‘blt Ata", Origin Systems has at |33t the long released awaited t° "" N°t sequel Ultima surprlsmglylt _

'5

to

_

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called

predeceSSOf S'des-

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retails for £39.95. If you read last month's column you might remember a company I told you about called Hippopotamus. Well, I have received another Hippo package for the ST called HippoCon— cept which is an outline and idea processor. Imagine you are preparing notes on a subject but do not havethe time to elaborate on those notes at the time you record them. When you come back to them, the program will allow you to elaborate and format them into an orderly manner, adding, deleting and editing as necessary. / <

‘

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It is difficult to explain the full working details Of the program in 3 few words but, for the person who likes to put his or her ideas down on the spur Of the moment, and make sense Of them at a later date, this package Wt” certainly help. When it comes to arcade games and the like my interest begins to fail. On the other hand, do enjoy a game where you are not tied down to speed andjoystick ability. Word for Word is for me. Copyright and trademarks prevent the authors, Bay View Software, from calling it by the name do, and that is Scrabble. This is possibly the best version of the famous board game produced for any computer. don't need to say much more, apart from the fact that when used on the ST the mouse is invaluable. The price of the game in the UK will be £39.95. have just finished reading the American magazines Antic and Analog, and am pleased to say that the products reviewed in their latest issues are ones that Atari User covered some time ago! It is nice to find that a British magazine is more up-to-date on American products than the Americans themselves, and you can read Atari User for a third of the cost of our American cousins. Until the next time. I

\ _,

the packaging you will find the discs, a book on the history of the kingdom of Britannia, another on the Mystic Wisdom of the game and a very informative players reference guide. The nicest touch to the whole package is the map, which is printed in full colour on cloth and looks rather nice on my wall. It will doubtless be available within the next few months from US Gold, but do not expect all the refinements that come with the US version. The American Civil Waris the topic of SSI's latest contribution to the world of the strategist. Battle of Antietam for the 8—bit Atari is set in Maryland on the day the battle took place between Robert E. Lee and his army of North Virginia and the army of the Potomac lead by General George McClellan. The simulation is up to the usual SSI standards and Inside

a

EDWARD

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June 7986 ATARI USER

13

-

Class clasnc .

”affix.”

The

Pris; £395

Ta” 0, Beta

“assert“

£74.95(disc} Suppl/er: Databyte, Suite 37A Grove Terrace, Highgate Road, London NW5 IPL. Te/: 07 -482 7755

being further divided into subsectors. Your progress is marked byindicatorsatthetop of the screen. If you lose one of your lives by crashing into something solid or getting shotdown,you

A seat

g??ag'ggorba?n/Ianage' Supp/ianAddictive Games, 10 Albert Road, Bournemouth RH] 732, Tel: 0202 296404 As you have guessed,your role here is to manage a club of your choice. The job ahead is

to take your club from the Fourth Division to the First, and possibly win the FA Cup on the way. This is by no means easy because players get injured, you lose a few too many

and your gate receipts go down forcing you to takeoutaloan—with allthe 74 ATARI USER

June 7986

with

each passing

sector. The defence systems consist of two main elements. Firstly, there are obstacles

things as generators, scan— ners, antennae and mid—air barricades. Secondly there are the actively aggressive components such as alien vessels,

asteroidsanddifferenttypesof ground to air missiles —

rockets, lasers and plasma cannonballs.

Particularly nasty are the Backbiter missiles which, as their name suggests, fly up at an the angle towards unprotected rear of your ship. Yo u r sol e m ea n s of defence, apartfromagility, isa forward—firing, repeater

the

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cannon which is used to blast any obstacles and attackers that are destructible and not all are. If you are skilled enough to reach them, there are city settlements and the aliens' power generators within the complex. Your mission is to destroy these generators. The game allows up to four players and has six skill levels, Level being tough and 6 plain suicidal, so fast and numerous are the attackers and hazards. You may choose to have five or seven spaceships at your disposal. One unusual feature is that the caves and their contents appear to be randomly gen-

eventual victory that much more difficult. Not an original game by any means, and I missed the ability to bomb as well as shoot that other versions have included. Even so, this is the best Skramble clone I've seen on any micro.

Presentation, graphics, sound effects and music are all good quality, and with its random generator and range of options, the game should prove to be durable. The Tail Of Beta Lyrae is an

1

exciting and challenging

shoot—em-up that any fan of the genre would enjoy playing. A first-rate implementation of a classic arcade game.

Bob Chappell

erated during play, so the game is different each time you start up your spaceship. The drawback is that there is no way you can map the cave layouts, thus making

Sound8

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nagers' bench

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hazards of borrowing from the bank. The first thing you do IS select one of the current British Football Association league sides. Next you select a skill level, ranging from beginner to genius. All choices are made via the keyboard, so be prepared for lots of typing. Then on to the main screen where you sell or list your players, arrange a loan, or perhaps pay one back. Loans can range from £250,000 for a Fourth Division team to {21,000,000 if YOU make It to the top. Before every match you select your team. A careful .

voooochkf‘

—

which block your way but don't go out of their way to attack your ship. These consist of such

on

_

matches

grow

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continue from the particular sector and sub-sector where the disaster occurred. Lose all of your lives, “1°“th and YOU are right baCk at the beginning of the complex again. Each sector gets progressively harder, with the caves ever more claustrophobic and twisty. Likewise the quantity, variety and perniciousness of the cave's defence systems

_

DESPITE its novel title, The Tail of Beta Lyrae turns out to be none other than a cloned version of Skramble, a game that first saw the dim light of an arcade about three or four years ago. Basically the game consists of flying a fighter Spacecraft through a series of caverns. The happenings on screen are displayed in standard two— cross-sectional dimensional, mode. Your view is from the side. The spaceship flys from left to right through the caves but can accelerate or decelerate, and can move up and down. The cave scenery scrolls smoothly to the left as you progress. The cave system is divided into a number of sectors, each

.

a-

evaluation

of

a

player's

skillwill be morale,'energyand

needed

ifyou want

to succeed.

After every match you are given your share of the gate receipts and shown the results other games played in your division, thus allowing a league table to be calculated. Fourteen matches later you are marked for your end of season league placement. If you are promoted you canlook forward to the start of a new of the

available on cassette. This is a shame as Atari so many owners have disc drlves now. Software houses should take note. On the positive side, there is a save game feature which means that you don't have to start from scratch every time you load. Football Manager isa good game in which you can really get involved.

Paul Irvine

season.

Football Manager is a fun game W'th only three faults. It is written in BasiC, so play is rather slow, there are no graphics, and it is only .

go'mdN/A raphrcs

Playability.. Valueformoney5 Overalls

Ill/A 7

Cavern capers joystick-breaking twists and

Program: Sidewinder

turns. Reaching the other and Of the cavern after what seemed a nerve shattering eternity I landed 0" the Dad- SUddenly this raised to an upper take—off point and had to fly back to the starting pad while avoiding new hazards. Eventually I completed the first level, and progressed to a more difficult cavern with stronger defences. You can replenish your ever—diminishing fuel supply by bombing fuel pods. There are five caverns, and the fuel pods become harder and harder to hit. If you manage to complete the fifth cave there is quiteasurprisein store, but I will leave that for

(cassette),

Price:4 59.9.5 .‘ _5 M's” Sufi pp/ler. Futureware, 743 Grays Inn Road, London wcrx sue. Tel: 07-359

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a well written arcade game where you have to pilot a helicopter through underground enemy installa— tions in search of kidnapped colleagues. As my helicopter appeared on the take—off pad the screen filled with laser beams, gravity

bombs and various

large

buildings and caverns. I took off and the screen scrolled from right to left, revealing even more traps and

Dan

.

Price: £9.95 f]4_94(disc)

Wike

m the

Suppl/enDatabyte, Suite37A, Grove Terrace, Highgate Road, London NW5 7PL. Tel: 07-482 7755iF YOU’Ve a taste for games that leave you red-eyed and that have you stiff—?ngered, saying for the 99th consecu— tive time, “|'|| just have one more go", that exert such an inexorable grip that you lose

track of time, then Boulderdash II is just your cup of insomnia.

Its predecessor, Boulderdash, was one of the most enjoyable, addictive games ever released, a computer classic no less. This follow—up, although it is pretty much the same mixture as before, is

every bit as riveting. You control a cute little figure called Rockford who blinks and taps his foot impatiently if you leave him idle. Rockford's task is to tunnel his way throughaseries of two—dimensional caves and collect as many jewels as he can.

Now while the plot may

you.

515

The program

,

tably. They will either fall straight down if unsupported or topple off underlying objects if there's nothing else to hold them in place. You'll soon master the laws of physics in Boulderdash but there still remains the need to

adopt

a

careful strategy if

you're to succeed. As well as the boulders,

roving butterflies fireflies

L5

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amoeba, and other obstacles

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while pleasant, are nothing to gasp about, the game has one ingredient that sets the whole thing alight and starts the old adrenalin coursing. In a word, boulders. Large boulders, embedded in various parts of the strata, are scatteredliberally through— out the cave system. What makes the game so much fun is that the boulders are prone to come crashing down with a noise like thunder. If Rockford's in the path ofa falling boulder, and doesn’t Shift smartly OUt ofthe way, he gets squished and loses one of his three lives. The boulders drop predic—

Sound

cavern.

orlglnallty department and although the graphics,

(cassette),

Paul Irvine

I

addictive

Program'Bou/derdash/l

screen editor which allows you to design your own caverns, saving them to disc or tape-

nowadays. found it very addictive, playing game after game to get on to the next

.

.

er

you to discover for yourselves. Sidewinder is great fun to play because it holds your attention, something that is missing from a lot of software

10

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and oddities see to it that you're kept on your toes. You control Rockford's movements with normal

joystick manipulation.

He leaves a tunnel behind him as he goes, and automatically collects any jewels he passes over.

When a certain number of jewels have been gathered, a secret exit appears, giving Rockford the chance to move on to the next cave. There are 16 new caves to traverse, each of which consists of several scrolling screens and has its OWN unique layout and set of problems. To increase the playing life of the game, each cave has five selectable difficulty levels; the greater the difficulty level, the more jewels you have to

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collect and the

less time you have to do it in. In addition, there are four non-obligatory intermissions to solve, giving you the chance to earn valuable bonus points. The program also thoughtfully provides the option of starting at caves A, E, I or M so you can get to see a lot of the game from the word go. The Rockford exploits are

classic numbingly

enslaved derdash

great fun and

—

addictive. Become — go buy Boul—

II.

Bob Chappell Sound

,

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Overall

10

Valueformoney9

June 1986 ATAR/ USER

75

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W earmg we I I... Program-ArcadeClassics

Price: £9.95

(cassette),

£14.95 (disc) Supplier: us Gold, Parkway Industrial Estate, Heneage Street, Birmingham B7 4LY Tel: 021-359 3020.

GAMES comloendiums seem to be all the rage at the moment. Arcade Classics is a collection of four fairly ancient Atari games bundled together on a single cassette or disc — Pole Position, Pac-Man, Mr 00! and Dig—Dug. At le a st t h re e w e re originally released on ROM

cartridges (whatever happened to cartridges?) so this cobwebbed collection exudes a strong whiff of nostalgia.

Nothing wrong with that, especially if the games are still fun to play. Pole Position is still one of the best motor racing games around and is a must for any Atari owner. The game gives you the chance to drive a racing carathair—raisingspeed around any of three different race tracks, competing against

other computer-controlled cars.

To enter

a race

proper, you

?rst have to complete a qualifylng race “mm" a time ”mit- HOW faSt YO“ qualify governs your position on the starting grid in the subsequent

Supplier: Mastertronic MAD Range, 540 Paul Street, London ECZA 4JH. Tel: 01-377 6880 THE Last V8 is one of the ?rst budget games to appear for the Atari computers and is a very interesting release too. During the Nuclear War you have stayed hidden in your base developing a super car — the V8. Now, in a desperate attempt to reach the remaintier of mankind, you come out into the open only to discover that there is an unexploded

nuclear

bomb with only left before it deto-

minutes nates. So you must drive to your base in the short time remainbut will you make it? ing —

16 ATARI USER

June 1986

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Options include selecting the course and number of laps, and having a practice race without other cars getting in

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your notice that when it comes to computer game plots, reality and logic invariably take back seat.

a

Dig—Dug was fairly popular in its time but this conversion

of

golden oldie fails to

a

sparkle. It is similar to, but nowhere near as good as, Mr

Do! It

graphically crude,

is

lacks variety of challenge and, worst of all, plays slowly. Dig-Dug compares badly

with

the game

memory,

l

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itself could almost be de-

today's standard of

releases.

The rest pretty well, though.

scribed asaloose combination of Pac—Man and Boulderdash.

hold

7

up

Bob Choppell '

You tunnel around a field digging for cherries, cakes, burgers and so on

while avoiding giant falling apples and fending off monsters with your Powerball. It will not have escaped

Sound

6

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Overall

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Elektraglide is Will find this game even more so. it isn't 5° much that you have a very short time in which toreturnto base, but more a matter of controlling the V8. Instead of a straightfonrvard up, down, left and right to control the car you have left, .

ccelerate

.

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load time from cassette, consistently refused to boot up successfully. Let’s hope that it was just my review copy at fault otherwise there could be a lot of frustrated buyers.

if you think difficult, you

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the fun. A simple game by current standards, yet still powerfully addictive. One of the few arcade conversions worthy of the title classic. Mr Dol, with a 15 minute

right.

_

,

.

which tell inlay instructions you how to control the car — it's wrong. For the record, the car accelerates automatically. Joystick forward switches you into high gear, backward into low while left and right move the car in that direction. To brake, press the fire button. An exhilarating game—fast movement, good use of sound and graphics and still one of my personal favourites. Pac—Man must surely be

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jaw—snapping head and zoom around a simple maze, gobbling up dots while dodging pursuing ghosts. Special energy dots which allow you to turn the tables on the ghosts and the inclusion of several dif?culty levels add to

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it is very easy t° Skid Off the road at any speed, let alone the speeds that you have to travel at in order to reach the base in time. To add to your troubles YOU have a limited amount Of fuel and your radiation Shield gets

two:

the top half shows a bird's-eye view of your car as it travels along the road, and the bottom half shows your dashboard.

which lets itself down because it is extremely dif?cultto play. But at the asking price it is certainly a worthwhile chal— Ben Halligan lenge.

progressively weaker.

An ever-present onboard computertells you howfar it is

Saunda

On the positive side, the graphics are excellent and the scrolling is very smooth. The screen is divided into

to the base and how much time remains before the bomb goes off. The Last V8 is a good game

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M|KE ROWE tens hOW to Enhance cavern Escape then askifyou arehappywiththelock and key rooms as they are. Enter Y if you are or N if you want different rooms. If

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All the connections between the rooms are shown. The program will

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with varigble connectioill'lsbeteveen them. They are numbered from O to 99 startin in the to left c orn er running in ‘(lilorizontalroe/vs. The start is alwa s o and the end is always at 99.Theseycannotbe altered easily. The data for the exits of the rooms,thetype ofroom,itsnameand the difficulty factor are all stored in data statements in lines 2000 to 2099. The key and lock rooms are defined in lines 180 to 189. The Smaze creator program will allow ehsy design ofa new maze and automatically create a file which will merge and replace these lines in Cavern Escape. The program is easily used and largely self-explanatory. After it is run the screen will blank for a few seconds to read in a new character set. It will then create the current maze on the screen. The key rooms are in blue and the lock rooms are in

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THIS program was written for those of you who liked my Cavern Escape in last month'sAtari User. The problem with that game is that as soon as you have explored the maze of rooms, drawn a map and completed the game much of the enjoymenthas been removed. With Maze Creator you can now make a new maze using the same elements as in the original game. Conversely if the game is too difficult you can make the game easier to complete. Firstly will explain how the maze is made up. There are four basic room layouts built into the program. These

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screen. You can cycle

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4 are a ff ec ted numberthe higherthe greater the difficulty. After this the room being edited is placed to the right Of the map with the exits displayed Cycle thFOUQh the various combl— nations Of exits Uhtii one is the-deSlred found using the iOYStiCk and then press the bUttOhAfter this YOU are asked to type in the room title. if YOU iUSt press return the standard name for that type Of f°°m Wi" be used- This Wi" the" bring back the flashing cursor and YOU are ready to edit the next square. it YOU have finished editing iUSt Start. press This brings upa Prompt forefiiehame to send the data toif you are usinga cassette enter Ci, it disc type D:filename, for example and the

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MAZE-LST- This Wiii DFOdUCe a i'Sted

file of the necessary lines of data to alter the original program. When this is completed load in the _

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impossible maze or even a version which will not run at all. Afew golden rules will help prevent this:

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and key rooms should not be placed on the same square under any circumstances. 0 Lock rooms always need an East exit and therefore cannot be placed on the right column of rooms on the

the room to the right of it must have a West exit. If not you willend up witha one-way door allowing movement in one direction only. This is used in the original maze to create five dead—end

map. Q The

0 A subway room needs exits in all four directions and this is auto— matically done. However this means you cannot have one of these at the edge of the map. hope this utility helps you get

program will usually stop you from making an exit which leads off the map as this is obviously impossible. 0 Remember to place corresponding exits and entrances in neighbouring rooms

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22 ATARI USER June 7986

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of STEPHEN WILLIAMSON's player missile graphics

WE already knowthataplayerisa shape formed by pixels plotted within a player stripe. The normal method of designing a player is to draw the shape on graph paper and work out the data that is used by the player missile system to define that shape. To do this requires a little knowledge of binary maths. Stripped down to its bare essentials, a computer is not very intelligent. Its heart is an area which recognises whether a switch is turned off or on. In the case of the Atari there are eight switches or gates through which a small electrical current can pass. In the binary system, if a current is present this is represented by the number 1, and if there is no currentO is used. Because the Atari works on an eight gate system it is called an 8 bit machine. lts big brother the Atari ST uses a 16 bit system which is more powerful. When we design a player we have to work in a similar way. The width of the player stripe is eight pixels and within any row pixels can either be turned on (1) or turned off (0). is a diagram of the bug Figure encountered in last month's program. The shape occupies 11 rows within the player stripe. Each empty square in the diagram represents a section of the stripe where no pixel has been plotted, with the filled squares

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representing the plotted pixels that make up the bug shape. In each row of eight pixels there are various combinations of pixels that are either switched on or switched off. Figure also shows the binary representation I

of the shape. Although the Atari works at the binary level it will not directly accept binary input. In the early days of the first mainframe computers programmers wrote their programs in the binary system. But it was soon evident that the human mind, unlike computers, finds writing programs as a series of Os and is very tedious and the chances of making errors are high. Hence the need for computer languages machine code, Pascal, Cobol, good —

old Basic and so on.

Having designed the player using a binary—type system we have to convert all those Os and is into something that the Atari can under— stand. This is done by a process known as bit-mapping. In each row of the design, the combination of pixels that are off or on can be represented by a single number. To do this each pixel space within a row is assigned a numerical value. Starting from the last column on the right the first position is assigned a value of 1, the next column to the left 2 (double 1), the next column 4 (double 2) and so on until the left

hand column becomes 128 Figure I should make this clear. By adding up the values of all the plotted pixels in a row we arrive at a —

number that represents the pattern of pixels, or the bit pattern. If you look at the top row of the diagram, a pixel has been plotted in the 8 column and a pixel plotted in the 32 column. Adding these two together gives a value of 40 which is the numerical code that represents the pattern of pixels in this row. Using the bit—map system any combination of eight pixels that are on or off can be given a single number value from O—which equals no pixels plotted —to 255 when all the pixels in a row have been plotted (255: 128 + 64 + 32 + 16 + 8 + 4 + 2 + 1). 255, which in binary maths is equivalent to current being present in all eight gates, is the maximum value that can be understood by the 8 bit system which is Why if you poke a value above 255 into any address you will get an error message. Of course in Basic we can use numbers larger than 255, but this is only because the Basic Interpreter breaks larger numbers up into two or more 8 bit numbers before passing them on to the processor. The diagram shows how the bug shape is coded into a series of bit-mapped numbers which can then be incorporated into data statements single

1

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in a Basic

missile

the asterisk to be erased and the equivalent pixel in the player stripe

will

128

32

16

8

4

2

a

list

of the various options that are available to the operator. Key C changes the colour and brightness of the player. The system used is the same as that found in the Atari Reference Guide with a 16 colour and brightness palette 0 to 15 range from 0 to 14. Only even brightness numbers alter the brightness. lfan odd number is entered than the brightness value one below this number will be used by the system. After entering a brightness or colour value, press —

—

Return.

When satisfied with your design D gives a list of the bit—mapped numbers that represent the shape,and these can then be used in programs to create the same player shape again. If you are not satisfied with the design then E erases the

pressing

programs.

64

switched off.

be

At the bottom of the screen is

The designer plots a grid of dots eight wide by 20 high which represents an enlarged section of a player stripe. A cursor can be moved around this grid using a joystick. By pressing the fire button an asterisk will appear beneath the cursor and the equivalent pixel willbe plotted on the player stripe which has been set up to the right of the grid. Placing the cursor over an asterisk and pressing the fire button will cause

,

1

program to be read and

poked into the area of memory where the appropriate player stripe data is held. We will look at how this area is allocated next month. This bit—mapping process may seem a bit cumbersome. It is also difficult to visualise what the graph paper plotted shape will actually look like on the screen. Graph paper consists of squares whereas player missile pixelsare actuallyrectangular, so there is a problem in working out the correct ratio of height to width. But take heart, the computer is designed to take the strain out ofsuch tasks. This month's program is a player designer that works out the correct bit-mapped numbers. The designer will allow you to design and edit player shapes in such a way that you will see exactly how the shape will look when used in your player

shape and you can start again. Key M moves the player around the screen using the joystick. The player missile system supports up to

four players. The designer allows you to design more than one player. By placing a player next to another player a wider or taller shape can be designed. Although the designer only allows

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11

player up to

a

nations.

Another restriction of the overlap facility is that it only works with Player 0 overlapping with Player and Player 2 with Player 3. You cannot get a third colour by overlapping Player 0 with Player 2, or Player with Player 3 and so on. So remember to stick to theO and or2 1

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maximum of 20 pixels high this restriction can be overcome by placing one player directly above‘ another. The program will work out the number codes for each shape separately but these can be easily combined in your own programs for taller shapes. A two colour player can be designed by placing players over or near each other. In this way you could,for example,design a man with. a pink head using one player and the rest of him a different colour using another. Multicoloured designs are possible by using all four players. To further increase the option of multicoloured players pressing key 0 gives a third colour when two players overlap. This third colour is decided by the Atari. If, for example, you overlap a green player with a blue player the resultant third colour will be orange. Experiment with this option to see other colour combi-

Binary

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Figure I: Bit map of a player June 7986 ATARI USER

23

combination. Pressing Key 0 off the overlap mode. switches again A player can be a single or double resolution player. All players must be in the same resolution, as due to a limitation within the player missile graphic system it is not possible to mix players of different resolutions. It and 3

may be possible

to overcome

this

limitation with the clever use of but this could only be interrupts done in machine code and is beyond —

the scope Of this series. Key S changes the size of the player on the horizontal plane. The player missile system has three size

options

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June 7986 ATARI USER

25

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,

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Joystick trigger

of current is required to milliamp it make operate. ,, 7 is to the pOSIconnected Pin tive Side the internal power 'of 's held supply, and constantly at +5Y' It W'" 500 lf or deliver milliamps ”1°” let It' bUt a speCify you. Atari maXImum current drain of 50mA, shared between the ports. If youtry to draw (“me you could end upwith anexpenswesmell,301ts a good to mid of idea semeform protection current—limiting into any Circuit that draws powerfrom this pin. A 50mA fuse is in quick—blow Peed the gadgets we W'” be describing. Pin 8 is the common Ov line. It connects to all the rest of the

—

.

'

.

1

state, Wh‘Ch.'s

enough to control'tranSIStors,thyristors, LEDs and integrated Circmt

g

devices. Some form

Of current and voltage amplification will normally be needed before these outputs can do useful work in the outside world, but with appropriate hardware you could control appliances the size of Tower Bridge. More about this next month.

at";misfits“;teatime: remains effective

the computer Cichitry prowcles CV pomt for Signal and trigger inputs. Pins 5 and 9 are analog inputs A ff.” variable can resistance belconnected

of how the four signal regardless

iig‘??;$2222?1f5328remp4223

.

.

.

.

as

+5v

ov

Paddle o (Ground) "1pm

and

.

an

ihput lines

resistance, converts it into

Ov by some external means, like a joystick. You can plug a switching device of your own to port 1,and read its output by PEEK STICK(O),orPEEK

(632). The pattern of highs and lows on the four signal lines is interpreted asa 4 bit binary number with Ov meaning on and +5v meaning off, so a number between 0 and 15 will be returned. It’s best if the transition from +5v to CV is rapid so sensors which a slowly produce changing output, like temperature-senSitive reSistors, are not really satisfactory. Devices that switch quickly like photodiodes or keyboard switches are suitable, so long as they can handle at least milliamp per line. The signal lines can easily be turned into output switches. POKE POKE 54016, 255 54018, 56 POKE 54018, 60 to set up both ports for output, then POKE a number between 0 and 255 into 54016. The

between

O. This opens the way for simple feedback—a motorised device driven

2331031322 Eh?"gutstgzéesultigto

by pins

1

to 4 could send

0 ,

—

1

—

1

(1 k or less) and

?fe; p inspcrontinzreto wpd'rlkas inputs even W h en t h e Signa l'ines are

stop signal

.

.

l

so

outputtizri;(1313: gemp'e"feedbaka Is or ire:ribgf?musse Issersgsss'enseors Pins to 4 can control motor 1

—___—"’

1

—

-

a

when it had finished opening a door or drawing the curtains. The pin could also be used as a fault line, triggering an alarm if anything went wrong with the hardware. As with the signal pins

.

—

a number 228 (500k

areTC?nfithiged.t 0 .“ h the gamer i': 553m;g?'frgma?g .

Figure /:Joystickparrpin—ours

an

your

4 to 7. ln output mode pins to4are held at +5v while are Off and fall to OV they when they on. They S_W't°h can'eac'h sink 15mA m the on

.

7

6

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By LEN GOLD'NG

5

W’th

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g?rgff'acigegiz fégzkicascousticnumber will 2513232 bits

All these are driven by software written in Basic or by simple USR-Ievel machine code routines. All the gadgets work through the joystick ports and this month we will explore the various signals you can put in and get out Figure shows the pin functions. Pins to 4 are the main on or off lines and they are normally signal held at +5v by internal circuiw A signal occurs when thelineistaken to

l

antral lt

THIS series will be all about hardware you can make for your 400/800/XL/XE. We’ll be describing devices to manage your central heating, water your house plants, control your train set or operate your burglar alarms. We’ll also look at remote key— boards customised for children, disabled people or ham-fisted ama—

G reen

01

Yellow

02 03 04 05 06

Orange Red Brown Blue

o 0 0 0 0

0 o

w

glack rev

l

“White—l

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Figure/l:Practical/ayout June 7986 ATARI USER

27

—Gadgets

—————

on/off lines, while variable resistors connected to pins 5 and 9 monitor the degree of rotation in two dimensmns. The analog inputs can also be used for devices which produce a slowly changing voltage. How about a photocell to set a burglar—deterrent program running when it gets dark? Or sensors to control temperatures and exposure times in your dark— room? Or a humidity monitor for the conservatory? Or a transducer that will react to sound? It’s all possible without too much knowledge of electronics. Here 3 a Simple light—sensmve gadget to get you started. You erI need the materials shown in the parts list. First testthe extension lead using Joysticks and paddles in the usual way. |f all is well unplug it, cutoff the end you don't need and carefully strip about %in of insulation from each of the nine wires. Screw the terminal block to the baseboard and attach the wires as in Figure II.The colours shown are those used in the Tandy extension lead other makes may be different. .

.

.

.

threshold value. A Similar gadget can also be used to help train hand coordination in severely disabled children who have little control over body movement. Random waving will have no effect, bUt careful 903050"an Of the hand can be made to produce some form of

Now fit the cadmium sulphide cell on the terminal block as shown, check that all the screw terminals are tight and then plug the gadget into port 1. Run this program: 1° P0“

752'1’PRI”

awn“)

zo POSITION 2.2:PRIN1‘ 30 001°

PEEK(62!I):"

"

reward. 0 Next month well exp/am hOW to use the four signal lines as output switches and how you can get them to control high power appliances.

20

.

'

‘

Initially the displayed number w1ll low—probably less than 10—but if you now cover the cell with your hand the number wnll rise rapidly to 50 or more. Try this: be

10

souuo

o.PEEK(6zu).1o.1o.8:

_

GOTo 10

-

lead (Tandy

27249783Xtension or Similar).

Cad

and You

get a light—activated swanee WhlStle guaranteed to delight even the youngest members of the family. Shopkeepers could use this device to make their wmdow displays more alluring. Fit extension leads to the cell and tape it inside the window so that passers-by can cover it with their hands. Then write appropriate software to generate something interesting on theTVscreen when the number in 624 exceeds your

—

Parts list

J 0 she k

.

.

SUlphlde cell—ORP12 or uimllum (Maphn tYpe HBiOL, Tgndvazent. or similar). 7.6‘116A 50m); ClUlck blow fuse and holder. 12 5 Moulded terminal amp blo viay(Maplln HFOl B, Tandy 61 30 09 0r from most electrica| sh e

‘

.

Bails?

(about 6in x 125” or 15mm ply). Total co st amu?d £6.50.

PreferaZTrd Y 12mm

Cannock Road, Chadsmoor, Cannock, Staffs W911 2DD. Tel: (05435) 79099

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Wings. Now admittedly in an industry where truth is as rare a commodity as poverty in Dynasty, one tends to learn to treat such tales with a degree of caution. After all, computer corporations make the maximum use of hype to keep their rivals as paranoid as possible. They may not actually persuade them to jump out of sixth floor windows but they keep them eyeing the led e as often as possible. So what is ggoing on? Well when it comes to finding out about new machines which have cost millions of pounds to develop, there is little point in asking the caretaker — or even most senior executives for that matter. After all, as was so often pointed out during the Second World War — Careless Talk Costs Lives. In this instance the working "lives" of those who leak information to their mates in the media without the necessary sanction from above. So the only way you can be sure of getting to know what really is happening without sacrificing your informants along the way is to go to the top. And when it comes to Atari you can't go higher than the Tramiel clan. In this case, it was Sam Tramiel, the president, whom sought out to find out if there was any substance to the reports of new machines in the pipeline. "Yes", he admitted. “It's quite true. The one megabyte is just the start. The next one along will be the two megabyte _ the ZOBOST then a four megabyte version". But how much technology do oeoo|e actually want? "Just as much as you can possibly give them", says Sam. "It's like owning an automobile. You may not always need that extra power but it's nice to have it there if you do _

.

_

* * * TALKING of Sam Tramiel, the Atari president confesses that he is ”computer illiterate". He insists that while he knows how to build them and price them, when it comes to making them work he's an idiot user. While he was employed by Commodore he readily admits he could not get to grips with the bestselling 64. ”/ simply could not use it", he says. However in the case of the ST the machine has proved to be a breakthrough, not only for the company, but for Sam Tramiel himself. "With the ST, I just push a few buttons and it “418”.th

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dropped by S?g, Hartmann, Ate” 5 software supremo, when he y'e'ted the PK recently. So then With as this, I ventured why costs as high 1° me "15's" for ask, the C9mpanv, that'developers pay their machines in the We a first place?_ saw thisuas °f the" he demonstrating way them commitment replied h proved t° “e that they had fa'th 'h the and Tramiel. Jack machine l” we had Wet handed over the machines, there no guarantee they would have got around to was Wht'hg any software any “FY"went °" to point 0“ that Ate” W'" 9° to Hartmann conSiderable lengths to help developers for the ST range. Over. in the States software houses are invited to send their writers along to Atari's headquarters to spend a week picking the brains of the corporation's experts. ”Unfortunatelythe cost of such a venture UK companies tak'"9 advantage would preclude ef ‘h'5 I' says "Unless they want to pay the" Hartmann. own expenses that is. “Mind you, the quality of the software being produced in Britain forthe ST is still just as good, if not better, than anywhere else in the world". Hartmann and his team expect to continue working round the clock for some time to come to ensure there is a constantly expanding software base for the ST range. “if l don't come up with the goods i won't be in the job for long", he says. Just before he flew back to the USA Hartmann pledged that whatever new machines were introduced they would be compatible with the existing software range. “After all, I've got enough grey hairs from this project that there's no way we’d want to start off from square one again", he said. was

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assembler chosen by Commodore for the

£19.95 ON ITS OWN FREEWITH ANY METACOMCO LANGUAGE“ MENU + provides ST users with a friendly environment to control their programs, using pull-downmenus and the mouse. Easy-to-use. Runs single programs or batches, avoids repetitive command line entry. The user can add his own tools, argumentsand options. Runs any programs not rust Metacomcoproducts. -

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grams by choosrng FULL GEMDOS LIBRARIES (Source code provrded) All Metacomco languages come with a set of GEMDOS libraries, making iteasyto program the graphics and the otherfeatures ofthe ST. Full source code ofalIGEMDOS libraries is provided, allowing to modify them. The source code is well programmers

compiler. A full

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=111111111

u

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1

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mass

1311

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3313

31

1ul11.1na11=1‘9

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1111111311

11

1311

111111111

31=..sss

M111

1m:1-1=31111 111313=11=111113m111=n+s

11111113

199 111

x-1

4545

1155111115

4555

11=11+1111211111114141111111

4555

15:5551175-111115

4555

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4555

15

11155151111

104

1111175

515

4575

111511

111

151115111

111511

11,11,11.11

111--1

5155

111=1

51111=11111511z1=1111515111141111151111=1v+11115=5115u5

4575

111155

XX,XY.XX+XL,XV:L1IEF

RETURN

4695

RE" 10 VD]

4755

51111=c=co11111115=5151111511115

4715

511115=5111

4715

snu11111,15,4.4,1=so1111111,5,5,5.5

4720

99"

RE"

ill?! lllSl

51111

11,11,11,11+11.

lg“

lb"

1151111111

To

P1512“

" M15 WA "

1.l.l.1.l.l.l.l10,l1l.l.l.l,1.5.1

155151111111

4557

553.

EUTUXV 6.12=1IPUT'Return

5525

155551151111,1,1,1,1,1.1.1.1,1,1,1,1.1.1,1,1 1,5,1,1,1

001.1111

5555

WA 1.1.l11101l111l.11111.1111l1l1011 WA l1l1l1l1l1l1l1l1l1l1l,l.l1hi.1.1

1551511111111,1.5.1,1.1,1,1,1.1.5,1,5.5.5.5,1 11.1.1.1’1'1‘1'1'1'1'1'1'1‘111111 M1“ 11.111'1111111.115'11I'111'511.11

K

1.“ Mn “LL

DRMI

TO

111111115

in“

"

MR

A

5.11150115

512.21511115 515.5155115

1:+15.1

1,5,1.5,5.5.5.5.1.5,1,5,5,5.5.5.1 1,5,1,5,1,5,1,5,5,5,5,5,1.1.1.1,1 15595111111.5.5.5,1,5,1,1,1,1,5.1.1.1.5.1,1 15155 1.5.1,1,1,5,5,5.1.5.5.5.5.5.5,5,1 15115111111 1,5,5,1,5,5,1,5,1.5,1.1,5.1,1,1.1 1512555111 1,1,5,1,5,1,1,5,5.5,1,5.5,5,5.5,1 15135111111 1,1,5,5,5,5,1,5,1.5,1,5,1,1.1.5.1 151151111111 1,1,5,1,1,5,1,1,1,5,1,5,1,5.1.5,1 15155 51111 1,5,5,1,1,5,5,5,1,5,5,5,5,5.5.5.1 151551111111,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 15575

5115121,111111+11=115111v111515151

111111

15555115111

1151u1111

‘

1111111

4755

v1515151115151115u

4111111111

11511

4555

1111511111c1111111

41155

11111-1111111111=11111

4515

1511111111,sz1=5111511

4512

u1=4551111111511u11=1551111ma1

4515

111 111111

1.1,1.2,115111111=1

11

511505

1555,1455,1155.1555

11115

111155111,u11,u115,111.111.11155u1+11,u11,u1+11,111115

11115

111155

4535

115111115111!!!

495!

RETURN

111.15.u1115.u1,u11151111155

486!

RE" 11 DR!“

4955

RMPzPElRDLE

47"

RE"

UL,UL108.UL.UL11FILL

5112.51112

15199 15555

ROBOT

511151115

ON

HAP

55

1.1115

1111111

51111

11111111115

11

512,155,557.155.5:17,155,517.75,517.75,545.75,515,75,525,55 15515 111111 525,55,555,75.555,75,512,75.512,75,512,155 15525 511111 475,155,475,57,475,57.495.57,495,57.195.55.195.55,175.55 15335 11515 475,55,575,55|475,55,455,75,555,75,475,m 15545 575,155,595.75,595.75,575.55,575,55.575,55,575.55.555.55 1555. mm 555,55,555,s7,555'g7'575,s7,57537575,15. 115" mu Iorth,Eist,South,Hest

"

65l+1R11L1|81,1641(R1(L11158),31REYURI1 UPDATE PLAVM LEVEL "

"

11511

1111111

1111111

4955 496!

L5v51:L5vz-L5vm11-415115u5 TYPE1BOTDIV 7'But Try LEVEL ';LEV11NTO!Y 11,1!

4955

15

mm

497.

IF

(LEVI

"75 IF 1111115 "Bl If “RH 4595

-

6.8

111111

”Mr!

111511 111111

55m

21=l

51.55 rsx=5

THEN

11599

IR1=IU11111USI=I

“N THEN l’='i!' ELSE "?aw '1l’1' “111“ Row-Droid“)

ELSE USl=Usz+l

11511

11

11115111

1111111

55

111“ MA 225‘75,5|,5|'z||,125,1n,75,225,15|,55,125 11115 215,275,115.15,295.255.-55,-15.275,155,-55.125 11125 11415 255,255,-25,75.215,115,45,5,275.115.-45,-5.155.255.-155,-75 11135 111111 245,115,5,15,215,95.-5,-15,255.115,5,15.255.95.-5,-15,275.75.-55.55

THEN

1111111

in

the

5m WI'

This program is designed to run in the monochrome hi—res mode. it will need extensive modi?cation to run on a colour monitor or a TV.

From as little as

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Atari ST DIRECT FROM THE UK’s SOLE DISTRIBUTOR The MEGAMAX C is probably the best C development system available for the ATARI 520 ST. Already voted as the best C system for the APPLE Macintosh, the new ATARI package is even better, packed with even more features and now available at a very realistic price tag of just £137 (ex VAT). complete development system, not just the compiler and common IN/OUT library. Take the Graphical Shell for example. MEGAMAX fully supports all GEM routines (AES, VDI and DOS) I

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