1SD0D3.

Tandy price rise as oric Programs to printer is type in for: VIC-20, THE Spectrum, TI-99/1A, BLACK ZX81 HOLE Software A NEW DIMENSION

-.,:.• reviews for Vr..- •:,- i : I'li: up hc IN SPECTRUM SOFTWARE

i:i.l'. '.]! : < irii Spectrum, UlllJ 'illi -i-_- BBC, Ace,

To be released this month ASK FORQUESTSPECTRUM charts for: SOFTWARE AT TOUR LOCAL Spectrum, SOFTWARE RETAILER ~ ZX81, Jagon Vote for Home Computing Weekly 1

The TI 99/4A Home Computer

- '.' resolution guphi: i!9?- ?.'. :.. : ; .•J-,i- !,;> il'V . .;.. j'l

iiiera 1 Software are jbouii.OW Prajnra I » b i|,: l;i; j' ' ~" HlPT J |;,r.;v,>V S ,, j [j ! f ^ VR J^.;-t:!M Siii.tJ.-ifvi-'V--:.- *!f.:

LmguajBS (PASCAL n. I 030 ASSEMBLER! TI99/4A for just £149.95 TWO SPECIAL OFFERS WHEN YOU BUY SIX WHEN YOU BUY A TI 0FFERS END JULY 2nd 1983 SOFTWARE MODULES 99/4A HOME COMPUTER TEXAS INSTRUMENTS WILL ^^—^^ TEXAS INTRUMENTS SEND THE SOLID STATE ZI ^ WILL nglWUTBI speech tZZM send SYimj_ESISEH YOU UmjjJM J I

>l> 2 ItllMI- CllMI'l list May ii-June 6, 1901 Ho.is

something Spread out for everyone News 5,6,7,9,11,13 PracliCalc, a spreadsheet pro- gram for the VIC-20 and Com- modore 64, has jusl been One woman's view 7 brought out by Marketing seven programs for to Micro Software at£24.95 on irum. There are also tw< Tor rhe ZX81. and ihe ; Markeiing Micro Software, Goddard Road, M'hitehouse In- dustrial Estate, Ipswich, Sitf- Two of the programs are

lor the chess enthusiast. Spec- LATE NEWS trum Chess II is. according tc Election special: Spectrum, Artie's Richard Turner, "a vasl VIC-20 15 improvement" on Spec Chess. Instead of skill levels, yon ti-99/oa program 19 simply set the time you want the computer to think, from tc both of its horns computers. 999 seconds. It is priced £9.95. The Atari 800, with 48K Chess Tutor, price £6.95. Profile: Kiltdale 21 of RAM, is reduced by £100 plays in three levels as well Getting it taped to £299.99. acliiciu iwginners. Ni well as a £10 price the i As prices of Artie's old games have vic-20 Software reviews 25 reduction to £149,99, the been cut bv a pound each. Spec 16K Atari 400 now includes Chess now costs £8.45 and a limited offer of a free pro- £8.95. Voice Chess costs Atari programming 26 grammer's kit worth £50. It For the arcade game fans, consists of a BASIC cartridge, Improve your screen play Cosmic Debris (£4.95) Ihere is reference manual and teecri- and 3D Combal Zone (£5.95).

And Artie is aiming at the Spectrum software reviews ... 51 Producl manager Peter thinking games player with 3D Hradek said the price cuts Quadracube (£4.95) and Adven- were part of its marketing ture E — The Golden Apple software reviews 53 rather than a react- (£6.95). Finally, SYS 64 is a strategy program to convert your Spec- game galena for Ace, ZX8I. BBC, Spectrum trum into a 64-column machine. It costs £6.95. ZX81 program 37 ZX8I owners arc not left M« Squirm the worm political Lynx out. For them, there is a version of Rcversi with four skill levels Camsoft's programmers have (5.95), and Raider, a Scamblc Letters «0,4i rushed out Election Analyst, lookalike (£3.95). What you've been telling us one of the first programs for This is Artie's first soft ware release for three months the Lynx, In time for the Richard Turner said: "We'n big day. aiming to bring stuff out everj According to Camsoft

month. But we try to maintain I the program will "turn Lynx high standard with out soft owners into instant election ware, and we're not jusl goini pundits". By feeding in previous crease our range regardless of election results, opinion poll figures, boundary commission changes and your own factors you can predict the winning

Available from branches of Laskys and Spectrum. Election Analyst will cost around £9.99. 1

FREE GAME WITH EVERY PEN!

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Both use liny ballpoint pe in black, blue, red and green prim ill 1 2 characters per v,™ and for graphics. They prim on paper t'A wide at 40 or 80 character:, in [c

ETSOflWi One' which can be wiilibotrMSK aridity com-

:rs, is lOMin wide, 6Min deep and slopes forwared from 2/iin

[be back and I '/:inat the front. With an eye to exports, Oric says it will also work in 110 volts ' America, after a minor adjust -

the Oric MCP40, as it is called, can also be used on any ler printer providing ttie same Micro show Darrell's Mr Russell said: "We knev that Oric was bringing out thi hits the gremlins Wedon't normally worr .-ii the Saturday. 10am to printer. Teenager Darrell Et he ring! on Midlands the Sunday. Entrance is too much about the com petit ior an ' author of Krazv Kong, has writ particularly at this one is being £2 (free if y< ten ,i novel game for the VIC-20. an OAP), b J off if >uld for i he One. It is called Slap Dab a you apply to "We sell ours without . due for release at the Com- aiding a lead because people The Birmingham modore show on June 8-1 1 at the variety ci Computer Show is organisea dv them on a wide of Cunard Hotel. Haininevsmiili. jters. In fact the demand ASP exhibitions, pan of Argus great that we have b Specialist Publications, :en so gremlins by "painting" a spuare publishers v. on stock so we have increased softwan of Home Computing hardware and in such away as to isolate them. Weekly. Anil Gupta, partner i "Owners of the BBC mil ASP PdtihitHHts. 145 Charm An irog. which is bringing out th in particular, have silaked up Cross Road, London WC2H 0EE .locks and there is now a £35 il The show will also feature d I'Vi erface for the Spectrum computer advice centre, run by independent experts, which will Kraiy Kong costs £7. Wand offer answers to burning Fun to learn Slap Dab, for the unexpanded ic Products is mounting questions like which micro you VIC-20, is £6. ler promotion from July should choose, and why you're Anirog, 26 Bateombe Gardens, civing jbji d-Scpicuibci\ ha-, iiig srou We loading programs. Horley, Surrey software with eyery com- You could also win noi one puter sold. Four tapes, worth ing fun have been launched by "'0, ' will be included ' Applied Systems Knowledge. writing K model, costing f i The company was founded on the 64 And four casst into by Tom Stonier, professor of wiliieOli.w i aw wiili Pop u> science and society at Bradford Simple Software has re-wrilt

: :hc shops the PIP5 club University, who said the range, its Simply Write word proce: 5. The free nowtotalling 10, was aimed at ing program — on sale for cs will h'eiw Sord. who Tokyo-m : MS children to use PETs since 1981 — for t h foreducali id the h< encouraging computers for more than Commodore 64, and added m n'ness. The I6K tapes will be started a UK club for users of its home adaptation-; of programs for the PIPS software. The company- just space games. features. games, which Colour and function k 48 K model. says that PIPS, which stands for The new c Products International Pan Information Processing need SK or I6K RAMpacks and Lumlim Kimtl. vonh Pork, from retailers, eluded in the program, which System, is an easier language to vl, Berks SL5 7SE and £46 leam and use than BASIC. Seek, graphic costs £40.25 on cassette Ttimtr Corporation, Tamewa\ It is also available for the ~ w. Bridge Street, Walsall. VIC-20 and BBC micro, as .< Ihi* WS1 ILA as all PET/CBM model,.

bingo and noughts and Simple Software I Orics for Japan to teach arithmetic; and Shape Simply File for 64, a database Up, to help the very young learn program, is also ready am ol Japanc-c hu%e ioiiiiU the shapes of numbers and let- be on sale after the mam Oric Japan to make and completed in three to the Oric in Japan, plus selling in Applied Systems Know/edge, South East Asia. They expect London Mouse, 68 Upper Rich- sell 120,000 in the 12 mom mond Road, London SWI5 from July.

HOME COMPUTING WEEKLY Jl 1 '

NEWS Radio one's vote with prize the ZX81 call in with the soli program in the program. Predict the balance of power the election results come in Radio One is planning to broad- cast a computer game — with :e the ct with a 16KZX8I. prizes tor the winners. Impet Portable Sofiw; Chris Sievey's record, noi The idea came up when has rush -released a program out at £1.15, has a song called Chris Lycett, producer of (he called Swingometer which, it Simon Bales Show, heard of Camouflage on the A side. The a says, will do just that. It firsi ol'ilictlireeprogr; newly-released single which has side £10.45, including postage, by a song nn one side and three pro- B displays the lyi sinni she grams far the ZX8I on the B and other tw and IK versions of a game called V .Sri;; mi Flying Train. But first Mr Lyccss has to overcome Home Office objec- He was being mlcriie tions to broadcasting anything about it by Simon Bates Saturday. the screech of a streamer data. Chris, a part-lime petrol ' • See our Election Special pi So experts are working pump attendem. has made BBC grams for the Spectrum a on ways other records since 1976 — th: io make the screech I'lC-SOin of which sTcpi into this issue. sound musical. They include single and wrote the ZX81 pro- the bottt staff from the Radiophonic of the Top 100 — including I Workshop, best known for the personal best-seller, I'm in Love with the Girl on the Manchester Spectrum title music of Dr Who. transmitted on Bank Holiday Virgin The original ideas was to Monday. Megastore Check-Out modems broadcast a game called Radio But due to these Desk. " complica- John McNulty, one of the One Road Show in which tions the plan has been put back. Camouflage is being marketed by EMI under licence micro industry's best -known nbydi Anyway, if prices are awarded, from Chris' own characters, has produced two .mother pioeitmi will have to be label. Random low-cost modems for the Spec- used. This is because the Road The pop-rock is, Show game gives a random win- number in trum, al £49.99 and £99.99. facL, a family affair. Chris plays And he plans to sell a 4SK Spectrum, plus interface and multi-track recorder, apart from modem, for an all-in price of drums, played by a Mend. Mike Doherty. £199. And the two other vocalists Mr McNulty created a stir could are Chris' wife, Paula, 28, you be and their babysitter, 22-year-old British Telecom's monopoly, — Winifred Stack, who looks after be lore liberalisation. Asher. 1 on our pages 3 /;, arid 4'/:-year-old Interchange, P.O. Box 240, Stirling. Word. Herts WDl 2EH Random Records, 3 Moorside House, Oakleigh Court, Timperlev, Cheshire HA IS Podding programs should, if possible, be computer 6UG printed to a width of 48 characters

Competitive rates are paid. designed for the BBC, Lynx, Soon after W. H. Smith slashed Spectrum. Jupiter Ace.Orieand Ihe prices of Spectrums a Scan- ZX8I. Model B fits the Drtiuoii, dinavian man walked into a Lon- '"C-20, Commodore 64. Tl- on branch and bought 10. '4 A and Tandy Colour. They Then he went str.iiidii hack [h cost £44 and matching ome on ihe ferry and put then liter. land costs£17(model A) n sale iii his own shop. £1B (model B). A spokesman for Smiths Silent Computers. 27 Wycombe said; "It was still worth his while " — ' London N17 after paying the tax." *

OWE WOMAN'S VIEW NEWS

all £50-worlh of software, is Mr K. You're L.Langley, ol Craft Court, St winners in, 'Ticki. Chelmsford. it pays to And winner number five S. A. Flood, of Longley Road, ir£I,a»softw

en the examples ilidn 't come nut in the book said they uld, two schoolboy errors of fact alerted me to tilt ssibilily that the "expert author" could perhaps he wrong. Hard wort with the manual proved all "my" mistakes 10 hi

After several reminders, the publishers sent an errata slip. '• A L E TmNi 1 • iich did not contain several errors I had found. They j "now been corrected ant, mim explained that the hook had .- printed. " The new edition stilt hus the error*, I found in tin O N MR

' * Where to turn next? A letter 10 a specialist magazine- T tey get hundreds oj letters, can V a/lord to reply individually, *

d only a few. of i rr begin. Your of geltin &

has got the stiine i/ft'stion printed. If so, eitht — so the producers id the answer because oj the high jargon Micros programme ' finycrs crossed to the 'full details in our issue of... "t ihich arc keeping their live — OK According to the BBC'sSue Lynas; "The rality of workinr I'm an obstinate type. Hut the smut! mis in those mags — with computers is that man: tmputer sale" — "hardly used" — "Only two months for things can and do go wrong - " "unwanted preset!!" tell melhai — andlhemind-bovvliw but a great deal can be learned novices it jus! too difficult without help. ly find hour live micro special on BBC when they do. "The programme makers hope r first flushes of enthusiasm, beginners will buy a greater Ian Mc Naught -Davis will to capture some of (he reality in be joined by a panel ol'micro ex- the live programme as well as of- expertise increases, they'll want primers, expansion perts including John Coll of fering viewers on-the-spot, i i their Acorn, Richard Foihci gill of the perl answers lolheir quest ion- its, toolkit software, bigger computers etc etc. Microcomputers in Education Equipment and softw; But if they gel turned oft , twl sell thiir computer and soft- Project, and David Ellis, a will also be demonstrated ii ire collection, you not only lose imy further sales to them, but the sale a new computer and software to whoever buys O of iwer queries and take If you'd like to take part Iwl ] ?ir second-hand gear. And tiirtied-offpeople are likely to the programme, you should send imh the subject to everyone they meet — which can close the in your quest ioi or on a potential customer before you've even knocked. Can suggestions Ii • computer industry afford to lose so many .sales, all for the below, giving a day lime phone — but remember, the le help for the beginner'; number itCai IhEenha The programme, which every letter. starts all 1 1 am on Sunday Oc- tober 2. is part of the BBC's A hint from Sue Lynas: Computer Literacy Project. The challenging or rcprcscntiat project has already .pawned two re them le Width. US niariii|! Cm. !< Pro- . •.,[![ iniiL|i:iii»n and vnur inter* series, The Computer gramme and Making the Most of ie MLci -.ehiMlr

L COMPUTING vl .

Ba iMit :.:,- he Dragon 32 Ruthless ..that's the only in the u 1,000 MJMto you

You ca r pocket getting g liter ivaded by the evil full featu re fruit machin ; game al 20 symbol per reel machine, e task that faces you is graphi one of spine-tingling terror - you must risk all to save old and nudge facilities. earth from a horrific destiny. Can you avoid the blood vicious g dripping, plasma curdling mutoids and activate the ship's the m arket. self destruct computer - do you have the courage? Can Specific* y for people w h deep pockets a nd money to you save mother earth??, can you save yourself??? the answer is surely ... how??? Superlative graphics and Game design and dragonware: R. owry sound make this game by Phil Woodrow, the ultimate

supi of these superb games £6.50 each, inc first class post, Soft Joe' is the one form e, pleas ( )cop esof packing andVAl Acnean Mutoids 1 For SBC "Bandi lFor All orders despatched >ithin 24 hrs of receipt, acosmic Defender | Mo elB P Snipe fDrag on 32 (lick box) from all good software outlets or direct from cheque/P.O. fo £ payable o Soft Joe's Software Dealership enquiries to: Soft Software, Business Centre, ClaughtonRoad, Joe's Address Birkenhead, Merseysida.

Post cou onto: Soft Joe' Software, Business Centre. Claughto Road, Birkenhead. Me-sevside 1

MEWS Row over same-name games

Mike Kil/j;LT;ild

However A&F's Jungle " against a software company over Fever, just out at £6.90, t programs with identical names. soon be marketed in an extended Manchester-based A&F version for the same price. Software says this is, in legal Mr Fitzgerald explained: terms, "passing off." '|fyouhavethel6KSpcctru In an action oflhi5lype one will only load the section of company hs to show that buyers program ll can use. The 48K could cuiiluse [he two products. model will use all of the pro- The row centres on A&F's novelty aracde game, Painter, "We arc going lo in available for the BBC model B, ciirpiTtiti: rliii leehniqiie Spectrum and Atom and soon our programs in the futur tor [lie Praeon and Oric-1. Programs just out from Mike Fitzgerald, A&F A&F are The Shining Pi managing and Horror Castle, botl reUiefii 32KB lt£B, a iefor

. players for the _ . called Painter, hiu ._ four heard of another company Dragon called SwjitiLmcklin - thai is planning to launch a and priced at £6, SO, which us" I'iimier nirihcBBC. piraie theme. Bouncer, an "We know thai we are arcndolypi.' game for Lhe totally in the right, but the pro- Top Twenty programs for the Spectrum blem is that the law is very hazy Painter for the Dragon and

on copyright. But it is very clear Oric will cimi tt.90 and lhe BBC Flight Simulation Psion (1 on passing off." version of Cylon 2 Melbourne House (2) His o the cc 3 Melbourne House 13) pany. Mr Fairley said: Transylvanian Towe Richard Shepherd (4) prepared to go to court if 1 have 5 Horace Goes Skiing Psion/M. Mouse (7> hi. Ii depends on them." 6 Football Manager Addictive Games (11) And Mr Fiiirgerald reveal- Micro result of 3D Tanx dk'tronics (5| ed: "Depending on the debut? e Arcadia Imagine |-| lhat we will be pursuing another 9 Planet of Death Article) Mennuedi';. new cumpiiie

10 Chess Psion make its public debut at the I (131 This a3Dsi lefor of England Computer Fair, said Hungry Horace Psion/M. House (16] organiser Julian Wilde, 13 Time Gate Quicksilva (-1 The fair will be held on June 13 New Generation (-) 13 at Wood Green School, Planetoids Psion (18) Witney, and Witney-based 15 Space Haiders Psion (-( game for the Spectrum. Memotech is helping v Battle of Britain Microgame (17) Programs for this computer technical advice, said Mr Wilde, 17 Abacus I-) are generally lor either the 48K the school's deputy head. 18 Orbiter Silver*. tt(-l model alone or for the 16K ver- on the Wood Green School'. Woodstock 19 tncs Curse Psion (-1 sion which will also run model with more memory. Road, Witney, Oxan 0X8 6DX 20 Ground Attack Sitversoft(19)

nsi.i v. II May I! PtgtS Compiled by W. H. Smith. Figures in brackets are last noMF.coMin ^SpMftfens ! raw SOFTWARE FOR THE Rainbow Research r\%^^H VIC 2SS ngn Street, (fender, Errf, ET^T^^ AND COMMODORE 64- ™r™°,™«, _ ,„ ,„„„ « I3L

COMMODORE 64:

CHEOUES/P.O.B TO: d-jrAj-jjjjs DOI&MISSTHIS INCREDIBLE OFFER 50 GAMES §l£9°951fis BLANK DATA SPBCTRUIU ZXB1 LYIMX DRAGON IncVAT ATARI BK^d rottoMcand Pbckins45p &B0AIB S&2M sis' ORKM

: VIC I 20 PH0DUGTS se cheque/P.O.

Pick all OOitiCiiutiu

PHMBBawAj»>rtfc u. Aj^ji^pooi U7 051inwigj [, ^

l-agc 10 HOMI- kimi'i.iim; \\h hi V .11 May ISM '

jovsiick interface. The interface plugs inioiheback of your ZX8I— Spectrum, arid lels you ^et up a range eim'.rauhlc jovsiick:., Vou program the interface yourself, so you decide which of will i lie joysiick directions reprc- which key. Full le a demon si. „..«.. ,,.~ _... for drawing high resolu in graphics using joysticks. If you bought AGF' ici'ial interlace, you will hav. si refusal on [he new one rests £3.'.yS inclusive o and packing.

AGF, 26 Van Gogh

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U.S. 5CENE Micro sales soar as prices drop

In general, the price of personal computers (there is i

specific category he? < irfW home . omputers) has come do* by 10-33 per cent during the last six months. Even s according to market anulysts, the price reduction alone is n causing the increased sales. Inlerpod interfere — all the right conntclions It turns out thai most consumers are witling I" 'pendtnore money on a hardware-.soJi;\aie puikage tailored tor then exact needs, than tiiat the acl tail price ol' lilt' computer itself. Dealer, have indicated mure and more personal computet Int-.eis tire parents who buy them Printer link pir their children v:ho are icing litem in school. Many retailers have j.'v. indicated thai over half !o three

for 64 ' fourths their customers are 'entry-level computer literate." d IEEE interfaces U of even year or Commodore 64 o This makes , i real chance from the customer of a

dijfereiulv. I hey now must five full hardware and software classes which not only teach Oxford Computer Systems, support, including offering ieiioty. Hensinglon Road. Woodstock, •it Oxford 0X7 IJR. Overall, personal and home computer rocketing. Many dealers ate reporting sales as much as three Don't lose Jive limes ahead oj projections. Dealers have come to lae your memory manufacturers have ways of realization that em/ilotiug programmers as sale; people just lest nig these things. They can do doesn 't get it. I! can behave just like an or- an accelerated test thai is then What must he done to convince people to buy is to explain dinary 7X81 RAMpack. liui the translated into ordinary u-age." terms what computers can do, and '"' to them in non technical difference is that if you lake ii CRAMlChaSi" what they can do for the particular customer in auestlon. Let's off the computer, you don't lose hear it for user-friendly salespeople, finally! the Jain stored in il. lion, and an adapt! who sell a range of computers are finding that It's Cambridge Microekv- ordinary RAMpack Dealers $250 price range, tronics' new CRAMIC-SI 16K nccted up at the same time. their biggest sellers fall into the $150 to for RAM unit, which uses special The two units then occupy what mu call home computers. When software is included, llie low power consuming CMOS $21)0 In it l he same memory area and you biggest selling packages cost from to $500. chips and a lithium battery to ' '"" from one ti> the tulici features; colour, sound and memoty ate titled most important. storage This The Jim two feature- a taut most heavily to the game players. - well, i syou': veil I, Customers who are interested primarily in memory are alsu usimlle ir.teresletl m other applications, most notably educa- tional programs. Many dealers find that the most helpful features on the smtillci personal tliomel computers are the function buttons, Computer which can hi- defined to do commands without repetitive pi gramming, and' lite HELP keys. Most dealers agree that they In care School titles could sell more computers if they . oultl net more com/niters sell, flic demand is literal!} incredible. Pant her Programs, set up to pre In terms the plug-in game cartridge market, marketing ducc only educational software of strategies have varied all over the place. has brought out its first nin About a year ago or so. it was common practice to sell the

Arranged through ; games- outright, hut this year many retailers have turned ti Priced at £5.95-1:8.99, they suiance company, it i game rentals. Many cite the luct thai lor, o! new games are On- run on the I6K ZX8I, both Spec- ileitis iikc ;iie cuiitpletc e ly slightly redone versions of older games, and therefore many trum models, the VIC-20. .epnir dm- i\i mc'li.iiiical u customers would aralher try the games out before buying. computers. trieal breakdown. Dragon and Atari Most sellers game cartridges can be grouped into one t Seven are lor children from of two categories — those who sell lots of games for little proj Computcr-SaTe and will be preschool to 12 and two ; each or those who sell far fewer games but sell them for available either at time of pur- study aids for senior pupil-, p much higher price. chase of home computet equip- others are Artist, at £11.99. a ment or within 30 days. As an in- Postman for the VIC-20 costi week. troductory offer, equipment See you next £5.99. hough i between June 1 last year Duguvel and May 31 can be covered. Panther Programs. 25 Computers For All, 72 North Gardens, Silverior Street, Romford, Essex Hamiiio',. Scotland

HOME COMPUTING WEEKLY 31 I J

The MostExciting And Innovative Software Ever Launched For Your Spectrum

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(lick D os appropriate} Date . ELECTION SPECIAL/SPECTRUM/VIC-20 Who'll win? Find out first and fast with your micro

Beat the TV experts at their own game with two programs to use as the General Election results come in. we're printing them today to give vou plenty of time to type them in and get them running before June 9 = '

ELECTION SPECIAL/SPECTRUM

Wliai "ill you be doing linn night? If. like millions of Election Special for both us. you will be waiching ihc results on TV, why nol put your Spectrums by David Nowotnik home computer lo good use? »,j rem e i You can store and analyse 2a REM by The calculation is bas 1983 the resulls of Ihe last General the results as ihcy come i 30 REM my program lor ilit Sp;', Eleciion, shown in table 1 3K200 THEN I The program i- sirrai ihe three major parties, ih three parts, with art opiio r»l65B,lB) an approximate relationship of; M = a facilii a 48K y 1 lx-140, where y is the Spent number of seats gained, and x i- (: LET- the percentage of total vote- LET LET £ 80 LET This relationship does nol i LET o 90 DIM hold for minor parties, and is DIM z$(13,32) complicated by the fact thai 100 =' 1 — xitBi 1 r there are seats in ihis more elec- E3r"**t3). H L tion due lo boundary changes ill (650 as compared to 635 last 130 LET zj (*)

of seats won by ll parties: ihe program will always predict 20 (line 3310). The (*«>-"., analysis routine will (lines 2000-2210 |W L^? rf noi operate until at least five LEr (11) •*\ resulls have been entered While !sr 1 limited to 10 chara iheie arc feu- results to analyse, the vot t ihre 13© LET (12) =". the swingometer might well sw- SDP/Liberal FOR i=i ing wildly, and ihe predicted Alliance is counted as one par- results will altei dramatically and Ihe D I NEXT ly) other parlies. 310 DRTR 334. * 239.4-2, 13 with each consume my result. You will be asked Tor the TO 1000 However, as the evening pro- 4.30 GO S LET_ number of other parties. When LET gresses, and the database you have entered this informa- =!??>!? U=^THFlN glows, the piedicnoi tion, enter the votes for each =T 11=0 swingometer SIO IF =0 THEN PRINT : PRTNT should settle down RETURN to give a fairly stable — ai will add them for you. 520 IF H=3 TM reliable — prediction of the oi The program automatically 530 FOR i =1 TO assigns the seat to the winning C The bar chart sequence lll^THEN PRINT : RRINT party of the four. Unless one of -U IF" provides a multicoloured 'ie "others" is a winning can- FOR i =1 ^cTtSk el- LET x=B*tl: LET display wl idate, be sure that the total of TO 11? PLC" x?a: DRflO 0,7: glance the relative positions of jtes for "other" parties does Ihe parlies. This routine ap- ot exceed the actual winner, pears in lines 4000-4220, with = ™m two rT i_INE x*: therwise (he seal will be ihe high resolution bar drawing warded to the wrong party. routine al 500-550. The optional Tiling scheme for 48K Spectrums will allow all, or selected results to be shown on ihe screen. When ask- ed to e OO SUB e.i- &60 fjg PRINT P.T Enter 1 crash of the program after several hours of use! Note, PAPER 2; f you do cause a BREAK, re- l; A, and all constituencies begin- start with GOTO 1000. ning with A will be displayed. The analysis routine (lines [f by 3 am you feel inneed 3000-35000) provides you w of a little sleep, but pla vingom dill carry on using the program (he 3030-3120), andatable following day, BREAK the pro- the percentage of total votes gram, and save with the direct polled by each party, the seats command SAVE "election" the end of the last LINE 1000. Parliament, and Ihe predicted Whatever you do don't use CLEAR, or else you can say The swingometer copares goodbye lo many hours work. ratio between ihe Conser-

ve and Labour panic.', this Table 1 — analysis of resulls al - ' - General Elec- last General Election

... . .when the n % of No. of Lab/Con.) (o givi a perceiiMsi: Party voles seats change in thai rat The prediction of the out

e of the eleciion is made ii )

ELECTION SPECIAL/SPECTRUM

i=i TO INT PRPER 1010 FOR ug. o INK 1;Z J (J > : NfcX * t020 FOR.i=13..TO_ig" 2;HT i ,0; 2;z*(l> 1030 NEXT i PRINT PAPER

;RT 16,12; 17, 12; "-. 1050 LET »»-9*=INKEYS

C iOTO I? S-J°»K SPtMN SO TO logo GO sub ,ooo.».io»o 1090 GO TOIBM s

LEN »•>!• ™E ioii INPUT |l f. If ~ 1SI%»,»T .».=;«.»..".'

- ?S.Sn" " print =.i«I GO SUB 680 -,: PRINT Lv;RT 10301 ' BO ; ; GO SUB I/1S: PRINT RT 17,10,-pe, 170 LET per = ( INT (1000* 2070 LET SV Use' INPUT 1*,16; PRPER 6; "5e ;HT 15, 1*," befOf"

: FOR i =1 TO*: PRIM

3220 IF J+50 THEN LET ] 3230 LET pSt -14.0: u *50 THEN LET psL=45B ET u " 1 TO *: FOR> j=l TO 3 3250 LET PS " 21*0 FOR .ET y=u IF u t Jl < jtl) THEN v. . LET ulj) ( j + 1) : LET i £150 NEX1 : NEXT 3270 LET i LET 2168 IF L =CV THEN 5178 IF I 3290 LET PSL=INT (630* (ps I /tps J PRINT RT 17,S6;psL = (pss / J I 3200 IF c "i RETURN 3300 LET pss INT 1530* tPS : PRINT RT IS, 26; pss 3310 PRINT RT 19,26; "20"

3320 PRINT : PRINT PRPER 2; INK ; let ... Is'thEN RETURN : REM R BORDER 3: PRPER 6; INK 0: C 3*90 IF INKEY* THEN GO TO 3+5 PRINT RT 1-5; PRPER Ij INK 3500 RETURN *010 BORDER 3: PRPER *020

i

TI-99/4A PROGRAM Fire! And it's your chance

The firebugs have been at work again. This lime it's a [all apart- to be a hero ment building burning from the top down. Your task is lo try and catch the unhappy residents as they leap from the windows of the now's your opportunity to burning building. prove your skill In the fire My Fireman program runs on the standard T1-99/4A. service, thanks to Vlnce Apps Move the firemen and blanket and his program for the using keys S and D with the alpha-lock button in the off standard TI-99/4A position. Press the shift key first if you need esira speed. As the fire moves downwards vou will have less time in which to prevent the luckless inhabit- ants from coming to a sticky

Catch as many as you can in the blanket, but miss 10 and I'm afraid that's the end of your ** "m career with the fire service! IS TS& 56,, SOTO gJL-nflLl.CL.trfJ CBLL ,ST) 100 REM 57 B H™"J;r„, CL 110 REM FIREMAN 120 REM wll how 130 REM BY V1NCE APPS see rdB 143 REM 130 GOTO 910 REM MOVE SUBROUTINE Hints on conversion 160 BED SBVEO 170 REM LOOK AT KEYBOARD g| Tcnas Basic has some 160 CALL KEY<9,K.S> QFC-FC 190 CALL 200 IF tKOUS>*CFC<6>THEN 220 673 210 FC-FC-1 ISfO M«"S™1„«J£TR*c SW 220 IF CKOIWHCFOMJTHEN 240 690 £30 FC-FC+1 characters. Number rercrs lo 240 IF 83>+THEN 260 700 PSN-12 iheASCIIoode of the re- de fined character. 250 FC-FC-3 710 GOSUB 740 268 IF CK<>69HCFC?26>THEN 290 720 RETURN CALL HCHAR [row, column. 270 FC-FC+3 R T number) prints the cliatatici IF OFC-FC THEN 340 * SUBWUTINE 280 740 l whose ASCIlcodc is ntimbci fWB FORFn* J-iT TO^ LEN £90 REM PRINT FIREMEN 750 CH-flSCCSEG* the screen. The CHflR<1 310 CALL HCHfiR<23,F01,i37> ?SSt3 ' P8H+j 'CH> 320 CALL HCHAR<23-FC,139> 780 RETURN 330 CALL HCHfiRC23*Fe*l*43_0 CALL GCHAR trow, eolu 340 RETURN 800 TRig-TRW+2 variable) is the equivaleni of 353 REM FALLING MAN SUBROUTINE 810 RU-Rw+2 PEEK. The ASCII code ot 360 IF JP-1 THEN 450 ihe character at position row. 370 REM NEW MAN 830 FOR J-7 CL=INT';RNrj*19+9? TO 28 380 640 CALL SOUND* 390 RU*TRW 100, -5, 2 s 403 ST=131 860 CRLL H0fiflR(TRW-£,j ,«> 670 CALL HCHflRCTRW- 880 NEXT J CALL KEY' (O, K. S). the equivaleni oflNKEYS, will leave the ASCII code of the MISSED 480 LST=LST+1 CALL CLEAR cl 430 CALL SOUNDC 530, 22i

HOME COMPUTING WEEKLY Jl TI-99/4A PROGRAM

GOSUB >«hj RE* > i^Lie ^"^'TfFFFFFFFFFFFFFF- 1 CRLL ' HCHRR ., , _ f«9« CftL 1W«U«' 818 | FF 1230 (£3 FC „FF|«1 = CALL , W*IK23,rtAaii I?6e CALL S|l. 1«EBFFFF" ]i240 CALL HCHm< S3f a7a CALL "»»:'; .r t:3311SCC") 1259 REM FC+i,lL>''^8) -i-m, J nR 1N L00P 5 £60 cosue 180 I 1279 COSiJB call 3S5 ieee -«p ;; a63ssi7E3SBese«; 1 1260 COTO 1260 12:?n SSSSI'.-le^^Kw- 3EM success litis IS: liiw CALL C0L0W14.7. > 1300 CR t-L SQIJND< . 500 33fl , 2 j 1 1060 FC-6 1319 CRLL SGUNDC3ee,450>g> -3 OFC"S !3S0 CALL SOUND(300,360, 2 J 1330 CRLL SOUNK500,500.2> 1340 ,: ' , '.-13id. rl ^NGRRTULflT VCHRRC&" ! ™,uJ I GNS!"- I, Tap rHLL 1330 PRINT "LIVES SRVED."jSVD 1360 GOTO 1430 1370 REM FAILURE 1380 FOR J-350 TO 119 STEP -20 1390 CALL SQUNDC150.J,2) NEXT J 11170 NEXT J INCS IhwfPI S LOST 1230 PSN-"

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>c 10 HOME COMPUTING WEEKLY 31 I TEST YOUR SKILL PIT YOUR WITS OR JUST TRY OUT YOUR SPIRIT OF ADVENTURE! HAVE YOU GOT LIGHTNING REACTIONS? HOW ARE YOUR POWERS OF DEDUCTION? WHAT IS YOUR IQ? limits and find We have the hottest computer games on earth for you to take yourself to the out the answers to these questions . . . and more!

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Tel: 01-8820681 01-882 6936

SOFTWARE FOR DRAGON 32 DEMON/DASM

nt colour Graphics ano\sourid. up to 130 moving -Graphics on screen " at any onetime. " * * Bonus La^er^high score facility.

All this for just £5.95Jnc. VAT. \ -AUp available for the Z5C81. \

CoowuTvip LV#*jrjy h 1k-3-playju4tf4.25.fi 16k-5-pl

MACHINE Computer CODE Performance? SINCLAIR

Fit HI-STAK for a better angle. ZX81 Two comlort Great Games on one cassette cleverly written in 7V madi'iic aide, stradies your aimpiiits io [he limit. Both have flicker free graphic, imbdie\ able speed and Ipectrum .2f£«>>yto VIC20 can become addictive. ->» TRS80 | -. JUMP JET

You are flying a Harrier multi-roll aircraft, your task is to bring ihe deserted city to the ground, with ever in- creasing speed your [ask is anything but easy. FORMULA ONE

Try and . keep your X X formula one car on W{ SCREEN SCORING.

skill increases so does T !! IK and l6Kmachin HI-STAK H WARP FACTOR EIGHT Both for the inclusive Price of £3.50!

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For the inclusive price of £4.95

[e 11 HOME COMPUTING WEEKLY 31 May I9S3 PROFILE How the software companies get it taped

Thr rape reels are then pul onto a winding machine which, guided by Ihe electronic pulses, cms off the individual lengths of There's more to software

i. i he duplicating than meets the gelling .opicd. , cards -which Kites* Badly-copied tape:, imu eye. candice Goodwin finds load inaccurately or won') load out what goes on behind the at ail are a Familial hazard lor scenes at Kiltdale, which does are [hat Once you've had a bad ape from a particular the duplicating for some of company, you'il think twice the best-known software mctid anyone thinking about buviiii: from them again. software commercially Retail (.-bains like W H Smith names in Britain ,cc the duplicating e also sianing 10 gel tough iih campanile whose tapes are unreliable. tempted by Ihe The trouble is, a loi of mem has to beablcto respond ac- doing it ihat way. we can clean up software companies try to copy curately to a more limited range original signal, so that our pro- tapes themselves, or go to and packed frequencies. :ter is actually bctler than Ihe duplicating companies geared of programs are all original". Peter said. The master up for copying music cassetur. Though lape in the of urded on a loop of quarter- Either way the equipment they saved on form sec for yourself how your corr and from that the is likely to be designed for binary data, Ihe actual way this is tape, puter tapes are produced, there' ic - not for micros. program is transferred to large a standing invitation from ' of cassette tape, each reel Whw's the difference? To computer to computer. Many 25-150 Kiltdale to visit their factory and talked to Peier ing enough tape for .._. out i computers use a system of high- have a look around. Write to the programs. An electronic pulse Fanshawe. of Kiltdale, Andovers- i hem at I'O Box 2, company that duplicates (apes ford, Cheltenham GL54 5SW. for Imagine, Commodore, Rabbit, Bug Byte. Dragon Data ' Richard Shepherd, to name a lev, Killdale wasset upin will celebrating prodi millionth data cassette, u reckons to turn out around Morse code, to distinguish a one cassettes a 100,000 program from a zero in the audio signal,

accuracy is all wl Software duplicating equip- .,']. i to be as flexi- ment doesn't need According to Peter Fan- equipment, but it ble as audio shawe: "Our duplicating system does have 10 be a lot more ac- is sped Til alls designed and sel up few components of an curate. Ifa fordata. Our mastering system is audio signal arc lost in the designed to eater for the ding process, it's unlikely that pec u liar ilics of any computer." be able to hear the dil- you would Kiltdale even use a special kind of lape, made lo ensure [hat as lev. Bui lose part of a software as possible of Ihe liny metal signal and you' panicles on the tape coaling fall

pieces of data, and the resulting f and cause data It

again, the li of a

unloadable. won' I affect a To reproduce the made by your favouriti ians. audio recording When ; for has to be able to respond lo awide duplication at Kiltdale, the first range of sound frequencies. This thing they do is try it out. Pcler kind of versatility isn't importani said: "Tapes we are sent often indataduplicating, forasanyont who has listened lo (tie sounr. wouldn't expect it from the large made by a program cassette wil manufacturers, of course — bt

" hardly music to tht it does happen". The lape is the ST" loaded into the computer and But data duplicating equip- new master lape produced. "By

' "periled here ~y Rkhiua rerts of cassette tape 1

IirrcrdeHI NUMBER REQUESTS ONE FOR That all good M/C Programmers THE for the ZX Spectrum send in their original and exciting programs for DRAGON! prompt appraisal by our experts. Best prices paid for Best programs. We are particularly keen on fast and furious or graphic adventure of llie latgcsi Dragon C games. Club and publishes Ihc

ARCADE prove it. Mom hi y money-sav Interested? Then send a cassette iiomhly compel itio copy to:

Bruce Rutherford, ARCADE, Technology House, THE 32 Chislehurst Road, DRAGON DUNGEON PO BOX 4, ASHBOURNE, DERBYSHIRE DE6 1AQ ORPINGTON, Kent. Tel: ASHBOURNE 44626

rmt~ot~»couizoc 1 1 ULKUZ*i iicKC MICROSPt1EKl-:CO?irLlT.HSI-;nviCESLTD ,2K(>St-;itt-;)<) l« )M> t.UO:1 M0 2LA TELEPHOfiE 01-883 941

CREVASSES HOTFOOT I16K Spec

[. t OMfMIM. WliLKLV ) VIC-20 SOFTWARE REVIEWS Which games Read our to pick reviewers' verdicts on for your vie? this gaggle or games for the vic-20

cridtrap £7.95

Sumlock, Royal London House,

If I had to choose one program to demonstrate the game playing potential of the unexpanded VIC, this is the one I'd choose. You have to move your player "" over a number of bomt" Here for once is a game with an defuse them and gain points, entirely original plol. You control a waiter who rushes from the randomly-positioned skulls side to side of the screen serving and the evilly moving indu is divided into sis floors linked s if this it enough, a by five lifts, and the waiter must be carefully guided on and off the lifts (errors are terminal). Stumbling while carrying the although there is a special scroll wine results in a warning and facility which allows the screen three warnings result in the sack. iggish and 1 haven't background to be moved lo the The use of graphics was fair and XENO II managed to complete it. bypass any animation good. The use of right or left to g; £6.00 Hence I can't comment on the sound, however, was negligible. fourth phase, which apparently Personally I found the game VIC-20 + I6K involves destroying the "power moving over the randomly- rather unsatisfying. Having you progress developed a good plot and placed flags. As Overall the graphics designed some good graphics, id the ga Jciut- the programmer seems to have ing. addi is up ti II ol frustrating. 1 prefer good accurate ins true- built up of four separate phases, I must have been given arogue The game mak-.-i cv: tiler tape, though, since I found the of the VIC's ability to chant supplied with a piece of rather game appallingly difficult to dimensions of the television tedious prose which bored rather Phase one involves landing a ssfu !!y.' screen and lo create double- than informed. space ship through a meteor \.\\. height user-defined graphics. The sound generators are also diffucult. put to good use throughout the Next you have to destroy three game, with a melody playing sets of space mines which home throughout the game indepen- dently of what is happening on The third phase is a simple screen. There is a constant wave of space invaders. During display of score, hi-score, this phase I found the controls a elapsed time and the time left until the bombs detonate. some time ago now, and any This is for my money the best Triad game relying solely on that non -cartridge game available lo E7.95 theme these days has to be extra the unexpanded VIC, See whs special. This has the usual theme, but lacks any memorable ' M.B. features. 1 found it rather

Thai t't to say that it's easy playability But the reward for

The first time 1 saw an arcade t one screen of aliens is value for mot game with aliens swooping down from the 'space invader' pack 1 was spellbound. Thai was quite

HOME COMPUTING W ATARI PROGRAMMING

On [he Atari computers, unlike must set aside a section of RAM

most others, you are not limited i user memory for the screen the screen formats provided by the There's no The video circuiiry must the vert the data into signals which the Although there are 12 stan- TV will understand. In our a dard graphics modes (0-1 1) these limit to [he television inierface ada| need only be a basis for any other (GTIA) takes care of ihe sig

mode you care to design using that goes to Ihe television and il is Atari's supplied with information by AN- microprocessor. TIC.

ANTIC, as it is known, i From Alari BASIC we i true microprocessor. It has its o antics on the access nine graphics modes, nai set of instructions, a program a ly OS (graphics modes 9-11 data. Its program is called The considered by ihe computer to Display List and its function is to screen olher forms of mode S)J In control what appears on the graphics mode 8 we are noimally screen. To understand the Display given 320 pixel resolution ho List it is helpful to have at lean a [ally.

basic idea of how a television Since each pixel is foreground or background colour electron An beam is gener- il only needs one bil of inforraa- ated at the back of the TV tube and is host towards the phosphor This means lhal eighl horizon

coating on the inside of the pixel values can be packed ir screen's surface. Where it hits, the one byte of RAM user memory. For one complete row of 320 pixels we therefore need 40 bytes the top left of storage space. drtuii of the screen and a Each row is stored im left to right. memory nexi lo Ihe previous ot

As ; travels the strength of and the total graphics 8 screen will the b lake up 7.680 bytes. On the ot some pans of the phospht hand graphics mode 7 can plot glow more brightly than others. each pixel in any of four colours. When it reaches the right-hand So each pixd needs two bi edge of the screen the beam is storage giving four pixels per byte. turned offand brought back tothe Wiih 160 pixels horizoi left edge and at the same time we again find that we net lowered slightly, each left-right You're limited only by your bytes of RAM user memo , ii.ir^iir";(ah Acoph'.-[i!!:l.r:.i'M].iM: imagination store each row of the s when building display bul only 3,840 bytes for screen displays with Atari's the tolal since there are half a* micros. Philip Brantley shows you many rows altogether. The computer create: ecnhasbceti reached, liicn:!: how graphics mode 7 by sending ihe am is turned off and relumed t same informaiion to the TV a

! top left ready to begin again

Since the phosphor on! Incidentally, have you ever fields are drawn each second is before il looks for daia for the ~^,dered why [he Atari 400/800 next graphics row. This gives us compulers for [he VIC-20 and vertical resolution of % pixels.

constantly re-draw Ir Commodore 64 for that matter) here and it is worth being cautious The display list is a short pro-

only normally allow you to use a if you buy programs direct from gram used by ANTIC io [ell il

small box in [he middle of the the Slates. where lo find ihe screen daia ir

In this country the TV stan i display your prorgams? Even some of the ilems in the RAM and how to interpret il. dard is 625-line envied PAL, a system You may have the full Alari Program Exchange (APX) Table I shows all Ihe ANTIC sach screen image consists o ai display of the BBC micro. catalogue are not recommended mode numbers and how

62! horizontal scan lines. This i The problem wiih any for PAL systems. number is interpreted in icm

machine [hat has been designed in Since ii is noi advisable lhal per mode line, number of colours a of two interlaced fields of off [he top and bottom of the TV screen only 192 horizontal scan The most interesting ihing to First all of the odd numbered lines are used (giving a small note is that there are five ANTIC lines are drawn and [hen all of the Mher than completely border on [he NTSC system bul a modes which are not used by am. So each field has 312'/j the display formal for much larger border on our BASIC. 2. 3 and 4 are character nd 50 fields are drawn each UK use, [he manufacturer can on- modes 12and Hare interpreted as second. As the computer does nol ly use 525 out of our total of 625 graphics. When you change screen

' interlacing, as far as it is con- lines and leave exira blank space at s from Alari BASIC Ihe

ned each successive field is [he top and bottom of the screen. pixels vertically, computer writes a list of all ihe superimposed and made up from The NTSC system also has used in graphics modes 8, ANTIC mode numbers for 312 horizontal scan lines. One interlacing, so its screen as far as 9. 10 and II. field therefore makes up a com- concerned is made up In order that the computer graphics o rhe display list cor

lines. The fact that 60 can provide a screen display it of 24 t instructions and so on.

HOMIi COMPUTING WF.EKLV 31 May 1983 I

ATAR I PROGRAMM NC

dby completely new display list the number 16 X (N-l) safe place in memory and then N is the number of blank scan telling ANTIC where it is. The list lines needed. So eight blank omits the three blank lines a lines {equivalent lo [he heigh! of a BASIC mode character) * IS-D 112. se eight blank lb

ich display list. These er at the picture does not

/er the top of the TV s<

i the NTSC system. I

iat give you any thoughi always use less than 240 scan lines

Memory Scan Command (LMS). In BASIC mode the shorter the display list, tl LMS would be stored as 66. It the rest of the program » is always followed by two extra If you think of these b>fcs vhich indicate the star- age as merely a pile of mo ting address of Ihe screen data.

i At the end of the display list

there is a JVB instruction. This stands for "jump and wait for vertical blank" when ihe dec-

graphics mode selected. Vou can find this location by fying it as we wish. Listing 2 us peeking location 560 and 561 this approach and shows graphics which hold the low and high bytes 7, 2, 0, 1 and 8 all on the sen

REH Expanded Graphics

HOI Find existing display list DLIST - PEEK(560)+256"PEEK(561)

HEM IMS and screen address

POKE 1536,64*2 ! REM UE byte ELIST = PEEK(56P)+256«PEEK(561) pcke 1537,peek(dlist+4) PCKE 559,9 poke 1538 ,peek( dust's) PCKE DLIST*3, 64+13 rem K» N=6 TO 39 TOR N=l TO 45 STEP 2 POKE DLIST+N,13 FOKE 1538+rl,16 NEXT N FOKE 1538+N+1.2 FOKE DLIST+40.7 NEXTN FOKE DLIST+41,2 REM POKE ELIST+42,6 REM JVB and display list address PCKE DLIST*112,65 PCKE 1585,65 POKE DLIST+113,PEEK(56?) PCKE 1586,y! PCKE 1587,6 PCKE HJST+U4 ,PEEK(561) REM PCKE 559,34 REM Tell ANTIC about display list HEM

MTrfiTART«TCPSTART+35*4rJ

HOME COMPUTING WEEKLY 31 May ATARI PROGRAMMING

EOIBTAH,P4HESrAKr+2p+40t2(J Lines ICO to. 260 create the these values can be found in Table

HI=IOT(MnerAHr/256) : PCKE a new display list. Lines 230 to 250 I).

place a new JVB and display list KE 88, ID Then, each time we ws start at then end of our shorter lisl print or plot in a particular area of PCKE 87,2 and, in order not to confuse AN- the screen we poke the modified TIC while we POSITION 1,0 : ? # 6; "atari mixed modes" change start into locations 88 and 89 150 and — So far, only ANTIC ki POSITION 14,1 : ? 4f 6; "by using" display completely until w

POSITION : 7 "custom display 0,3 #6; lists" finished and then turn it back

i after each change by poking the

Once the display list is a aluc into location 87, otherwisi

plete we must tell ANTIC hou : will think thai all of the sera interpret the screen data otherv lata must be still in graphics 8 u

Hl-Im'(TQPSTART/25e) ;KKE i: will Mill think the whole scree iroduce gibberish in the olhi

in graphics 8. do this we ti node areas. IIM0FST(1HT-H1*256:ICKE 88 ID To Some recently introduced

C=C+1:IF 0-4 THEN 0=1 Unes 230 to 300 define the starting —.„, allow you to com

resolution graphics and [i COU» C location of each of these. Top-start is the graphic 7 same screen. Although

PLOT 0,34 : CRAWIO A,0 area and is at the beginning of the the big disadvantage of 1

screen value ttl (l! PLOT 159,0 : DRAWIO 159-A.34 data so we use the found in the locations B8 and iiL'iiu'r;, ;:obbled up. REM S9. Mid-stan is the text area in the The Alari Display List Hl=Iwr(BOTSTARr/256) :POKE 89.H1 middle of the screen so to find the ,__ combine any numbei start of this we 35 graphics 7 LCNBJIETART-tf1-256: POKE 88,IO add graphics modes on the st POKE 87,S:C0IOR 1 mode lines each of 40 bytes screen without using any more meri«,i> memory. than is absolutely necessary. Any PLOT 0,0;EBAWIO A*2,69 Bot-stan begins below the i of 16,4, 2 and 1 col-

PLOT 319,69:ERAWI0 319-A-2.0 ,, and Ihe different text bytes for the graphics 2 line, 40 modes, can be mixed at will. bytes for the graphics line and 20 You are only limited by your COIO 540 bytes for the graphics I line (all of

FORTH FOR THE DRAGON 32 'DRAGONFORTH' is an implementation ot Fig-FORTH tor the 'DRAGON 32' microcomputer but with a difference. As well as the enormous power of the FORTH language, 'DRAGONFORTH 1 can also execute BASIC statements. This combines the superb DRAGON sound, graphics and Floating- Point commands with Ihe tremendous speed of FORTH to produce an unparalleled hybrid. You can write a whole program in BASIC or a whole program in FORTH or any mixture of both.

If not already convinced send £2.50 tor the 60-page manual (redeemable against first order).

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C COMPUTING WEEKLY 31 I .

SPECTRUM SOFTWARE REVIEWS Adding and Alphabet Subtracting First steps £5.25 £5.25 Widgit Software, 48 Durham Road, East Finchley, Londt Widgit Software. 4S Durhan with your N2 9DT Road, Easl Finchley, Londoi N2 9DT Aimed at children aged tv Spectrum upwards, this program for U programs — all of which a ' simple additioi with practice in selecting letters oft: of whole numbs using the "building blocl Here's selection of programs It loaded first time and conci method. a Widgit has used a lot of i designed to make learning fun entertaining educational pr for young children. Do they gram, using hires graphics ai succeed? See what our reviewers thought . Colour and Dund are also used well. The programs loaded first

were all well and concise. They program works by selecting am user Shape-sorter counting error trapped, bug free and displaying a picture in colour hi friendly. £5.25 £5.25 res graphics — subsequen two Adding shows a crane and pictures follow in alphabetical sets of up to nine crates, with a Widgit Software, 48 Durham sequence, and the child enters train below them. The crates are Road, East Finchley, London first letter of the name of the loaded on to the train in two N2 9DT parts — the two parts of the sum Level three displays a graphics the correct result is — and, when lower case letter, large site. The

the train puffs its way I pleased to say that Widgit 's entered, programs, Shape-sort, Houses am child types in the corresponding screen. their stated off and Size Sort, all of which use programs achieve uppercase keyboard letter Subtract uses the same idea, aims: to provide educational and colour, sound and graphics to if correct, the picture is but this time a boat is being produce an interesting exercise entertaining programs for unloaded (by a little man in basic perceptual skills for children aged two years plus. The computer plays a verse of down ladder) four running up and a This tape contains Baa Baa Black Sheep for a before steaming off into the programs, all of which loaded correct answer — good, positive All three programs loaded first time, were easy to operate, were first time, gave brief but worked without any bugs, The pictures do tend to take friendly well idiot user and while to be drawn and after tf Ail programs used suitably simple to use, and well proofed. first few times are easily rei sound, colour and superb ognised. 1 found that children Shape Sort displays four learning programs with graphics different shapes at the top of the Count 100 was better than on which would put many a screen, and in the middle of the some arcade-type Spectrum Spectrum arcade style game to screen is the shape which has to shame. Wholeheartedly recom- be matched. The child moves the Aimed at pre-school and mended for children of pre- shape along by pressing the infants plus age range, Counl school or infant plus age. displays a random number of R.E. Houses shows four houses, monsters and the child types in one of which is slightly different the correct number. payability shows random A car is drawn and has to be Count cats a graphics 100% IfJO'/o elephants, cats payability moved to the odd one out (keys number of trains, value for money graphics lOOVo are the same for all programs). and houses. The child has to value for money 100«o When the correct house has been input the amount of the type of 'lady" runs from the object the computer chooses. othet d drives off. Rockets: up to four rockets "4SK ZX SPECTRUM els of difficulty with up to four spacement in each appear. On entering the supplied. ALPHABET In Size Sort five objects are displayed and havelo be selected rocket(s) take off. largest first. Count 100: a number of men

Thesi s of are displayed in tens plus any units. child enter [ value to young children — extra The must as well as using threc- Ttsiiiinl -hii pes and objects,

;»-J'JV .. . ,

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SOFTWARE REVIEWS Games galore — to suit all tastes

These games range from the speedy to the sedate. Here are our reviewers' comments — and star ratings

Thro' the wall And that's the hard part. For and scramble Bullets don't fly straight up the 81 screen: instead a 3-D effect is zx 16K achieved. Two bullets fly out £4.95 from either side of the gun, and it is only when they converge on a shark that a kill is made. The sharks' movements are fast

) that rather respond to the keyboard at all, make 1 approached this tap le' Li: I i-L!lr or went from the 'choose reluctantly, suspecting that i The fas er you kill, the higher might be very similar to man play' stage direct to the rate. There is also a have achieved the highest s others 1 have tried. And so i Elfin Software, Hudsons so watch your oxygen stage apparently missing ot House, Battery Road. Great level), and three levels of dif- game altogether! However, when it did Yarmouth NR30 3NN Scramble, both arcade . . correctly it a simple game lns l ructions appear on the withuj was using either the keyboard or At first glance, Jawz looks like a oogtn flies variation on Invaders, but with are very limited, and a couple of joysticks. Your airplane the action transferred from the tries are needed to get used to why yet another of these should over enemy terrain; rockets and enemy craft attack you. and depths of space [o the depths of be offered, so 1 tried them out. aim is to shoot them down the ocean. There arc five different keys to Thro' (he Wall proved to be a your avoid them. The display You control a gun which rests very basic Breakout game; you or together al the base of the moves fast and the controls n the sea bed. It can be moved have three lives and each brick is — little tricky for respond well, but 1 found the left and right and fired at sharks keyboard a worth 10 points. Three speeds ;iiLuh--,i/i;d fingers. terrain was genera swimming in mid-ocean. are offered, but even 'superfasl' way the bit flickery. Close to the surface are jelly Nevertheless, a must for is not very taxing. I didn't find tlie.i: rami-. fish which drop poison pellets. Invaders co Unlike some version of the The sharks appear resistant to game, the angle of the ball can the poison, and swim on if hit, vary wildly according to the but if your gun is struck, you lose angle at which it strikes the 'bat'. it. You get the usual total of This is the only thing that is guns before the game ends. difficult to judge. But the payability pL:y;.iiilitv The s look r display was smooth and 1 found graphics value for money Not so with Scramble. Maybe a

necessaryl but your designs have Bumper 7 ' to be limited to horizontal ai ZX81 £4.95 vertical lines only. Even allowing for tl Axis, 71 Brookfield Avenue, catch a falling snowflake in a limitations of IK, these are n Loughborough. Leics LEU terribly imaginative games. 1 BLN the program. have seen programs that manage ' Both these games have very The last two games are uic tocramasurprisingamounti Seven games for the IK ZX81, minimal displays, however, and most interesting of the bunch. the unexpanded memory. intended as an introduction to the player only uses left and right Banco is a simplified version of the capabilities of the computer. controls. I feel that even with the card game Chemin de fer — C.C-R. Repeal 20 is a memory test limited memory more imagina- similar to the electronic game tive graphics could have been devised. Paper, Stone & Knife is a computer version of an old Sketch is rather like the child'; value for money favourite; you indicate your game Etch-a-s ketch. It allow: choice with a number and the you to draw pictures on screer ZX81 randomly generates its (rubbing out mistakes il

HOME COMPUTING Vv I May 1983 Page 33 SOFTWARE HI

Four Driver involves you in a mad ton-up attempt to keep your Challenging skidding car on the winding cames road, with penally points piling up against you all the lime, while Jupiter Ace Maze lets you steer an exponent sign much more sedately E5.50 through its labyrinth in search of the almighty dollar. Remsofi, 18 George Street, Brighton, BN2 1RH of ihe Micro! game of the same This games compendium from you release a parachutist from a the Remsoft siable genuinely plane and guide him safely lo lives up lo its challenging claim. earth in the dropping zone. With the speed of Forth these Instructions to all ihese games games certainly do need real skill arc clear and comprehensive, and Iheir difficulty is increased Ihere are no loading problems by the gooey rubber keys of ihe and when your triggL-i finger gets Ace. lired you'll find it well worth The games themselves are nol your while to dissect the exactly new, but if this is what dictionary to see how they all you think Forth is for you'll enjoy mastering them and G.M. gradually improving your skill. instructions 85% In Saucer, flying objects more payability 90% like rockets lhan saucers appear graphics 95% in swift transit from left to rigbl and you have nine chances lozap Allows you to use any Atari/Commodore type joystick them. Sound and flashes crown with the Spectrum. Simply plugs into the Spectrum. Complete with 12 months' guarantee. joker Hangman Spectrum BBC B £9.14 JOYSTICK COMPATIBLE SOFTWARE FROM £5.75 Flowchart, 62 High Street, Irlh- Micro-Aid, 25 Fore St. HEmp^opT lingborough, Norlhants NN9 Cambourne. Cornwall TR14 5TN OJX FOR THE SPECTRUM

[ know that humour is a very personal thing, bui it's hard lo ORDER NOW! imagine anyone wanting to sit in This is really an international AMroBlatci iKQuicksiln ."M front of a screen for an hour version of Hangman as it can be L. Blind Alley reading jokes interspersed with played in five languages; 1.. Cosmic Guerilla 6K Crystal coloured patterns. This, English, French, German, 6KAt.be* however, is what Joker offers. Italian and Spanish. Vou can C Cyber Rats also store your own Hangman program as ""hundreds of rib- words in [he program. tickling puns and jokes coupled There are two levels of diffi- 6KDJI with mind-blowing graphics." culty — easy or hard. Each game Gala-ias £+95 In fact the jokes rarel\ rise above starts by asking if you want a l~l Gulpman 6K Campbell Sys the level of "Why do traffic clue aboul Ihe word lo be wardens have a yeilow line on guessed. The easy option shows £5-95 Iheir hats? To stop people dashes on the screen indicating Knot in 3D SKNwGen £5-95 narking on iheir heads." the number of letters in the word Timing is all- important in to be found. The hard option joke telling, with even a weak doesn't. You have nine guesses, Nigh.Flite Co" joke raising a laugh if well and the whole word can be 6Kw,rre delivered, bui ihis program's guessed at the start or leiier by £3 slow pace makes the humour If you fail to guess the word in As for the graphics, they're nine goes, you are unceremon- 6KAbbox iously hung whilsl the Death M-95 n Conversion Tape t £+95 intervals between jokes, and 1 March plays. £4-95 found Ihey began to pall very If you enjoy a challenge a> Spectrum Joystick™ rfaceonlytlSOO well as word games [hen this old and tried game is fair value for programs for Ihe 16K Speclrum money — and might even and Side B a single program for improve your foreign languages: *™>H«™«L'* 48K. Vou can choose eilher 60 minuies of jokes with graphics, or 36 minutes of graphics alone. P.C. D.J. instructions 10% n-^ta^WA«WN, K3 _ payability 90% payability 10% graphics 50% graphics 40% valueformoney 70% Kurn pit on (Micro) Electronics Ltd, Dtp I value lor money 20% 180a Bedford Road, Kempston, Bedford M t« BBL. irmingham THE METROPOLE HOTEL ATTHE NATIONAL EXHIBITION CENTRE

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I! l.'OMPL'1'ISCi WLLKl.Y .11 Ma, 14S3 ZXB1 PROGRAM Meet squirm, the hungry worm who won't stop

To help you type in I lie game, 1 growing will explain the graphics characters in my block -by- block colliding with himself or description of the progi I'agc IS4 of the ZXXI ma

he grows. You store points Tor

[he numbers, from 1 [o 10, that you eat. Control him with the cursor keys (5,6,7,8).

The number 10 i

; Squirt another appears, so II gives you two more numbers, The program contains a fev features which may easily bi transplanted i

i for •peed ,i:iJ economy. As the position of the head will later be the tail, and is to be erased, every position of the body needs to be recorded. For this an array of 600 unit sis used as this is the total .size of the maximum length. The array may be thought of as cylindrical in that it wraps round so that the

PEEK rind POKE on your roachlne-ifPRINTingis faster — then you will probably line number, and one for the column. The display file on the ZX8I

be altered. It is followe bytes for the first line.

NEWL1NE. Then com

is PEEK I&.WS 3W. and this is

the code of the character or minuses (see 8000 subroutine). Poking a ne. ZX81 PROGRAM

i NEXT LET REM LET ... LET Q=PEEK .. .. IF NOT O THEN GOTO 34.0 lasa print .- IF 0.S_=1.SS_THEN GOTO 1000__ rem ass LET «nanaMHna^L J * = 8 *"6 tvP" : Ki' 37..Z fill If Sot PR CMP* '.CODE us IN *PEEK 16399) ^I^il^S"THEN 5873 Return

3B30 IF PEEK PEEK N-12S RETURN 304-0 IF INKEY*C THEN 3BS0 NEXT N leea goto 9020

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clouds and mountain peaks. Price only £5:00 loop, tile figure of tight. ilic> snoop, I hey dive, can you sur-

<.ala\inns. down tlic mvadcrs. beware screen Sheet alien inn ol the vive. Full display . W progressive levels of pla>. 5 lives, swooping attackers. Price only £Sr00 bonu- ship at 5.000 points, svvarmer.s. bombers, leaders.

Asloniids. You: ship is lost in Lin asicroid field, your only hawks. Price only £9:95 hope is to blast, the oncoming asteroids. Price £5:00 All our games are written entirely in l(K)°i> machine code,

(un Fidhl . Be quick on the draw, shoot your partner before he superb colour graphics and sound.

shoots you. a game of skill for 2 players. Only £5:00 Available mail order from [lie above address.

(_' Super Breakuui, 1 lie okl favourite arcade paint brought back Also available from Micro Manchester. 1i,\;|3 Computers to life. Knock out a full wall to gain another. Only £5.50 Bolton. Micro North. Bury and soon all goodec orders sen All i by return posl. Trade enquiri » el co me. ANIROG SOFTWARE

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VVLLKI.Y 31 May I9S3 Pan* J . '

LETTERS No, mine's the Send your letters to Letters, i, Texas and the V1C-20. best. . weekly, All this bickering is doing Home Computing 145 ing for the budding cc Charing Cross Road, London r owner. He/she will n letters and, there WC2H OEE. Don't forget to name i because your computer — the best

letter could win £5 worth of buying one since (sjhe v.\'. software. Queries cannot be lei"; confused and frustrate. Every co muter magaz answered on this page letters page seems to have same comments from readers. Now HCW is beginning los" the same symptoms, although with different computers, and ii then t of two telephone calls own ro [ [en computer while slag- will not be long before this ex- ging mine in comparison. with all There must be other Limes cellent mag is festooned love "/©£&'()?. ] my It when software is not compati- 1 ask all owners was delivered 28 days before 1 ble with certain tape recorders computer ordered colours, 42 to call it a day, bury the hatchet it, has 350 and 1 feel this should either be sound modes, 632 user defined and start helping the novice — afier all, we were all novice functions, a built-in primer and iiage should be refunded technology, disc drive, Tits into a matchbox, once, looking for help. Just bi f theft glad that you can actually af- and runs to meet me at the door jungsters have saved home computers was confirmed ford a computer — some people with my slippers. At £4.25 months to buy a par- when my husband, a doctor, (including it is vastly can't afford the price of living! VAT) iece of software, it is bought a 48K Sinclair Spectrum K. Uuld, Selly Oak, Birrr superior to all other makes in wry h e their money and started burning ihe mid- the range only under-£20O and a dbynr night oil. My interest was rapid- cretin would buy anything else. ly awakened when I challenged Observing that four out of progn the five letters in your May joy Myers, sranmore, jviiu- 10/16 issue were from owners dlesex of inferior computers, attemp- My problems Sandra Dicioccio of PSS said: technology. 'There seems to have been This resulted in unique with a tricky some sort of mix-up. Our nor- software package which ex- Lynx mal practice in cases tike this is emplifies the approach which I While programming on to find out ihe problem if we believe LYNX micro, I came aero d of tl very strange quirk, in con plimenlary tape instead. We do home-computer. Cycle PI, normally refund postage if a allows women to compute and [ion wilh using siring functions customer requests il. On Ihe record all the important events while concatenating strings ii whole, our service is very good occuring in their monthly BASIC. — we gel quile a few letters menstrual cycle, and Growth The following program Postal us on our quick complimenting Tracker allows easy access to t ' causes the end digit of J service and good products. useful information growth problems on placed al the beginning i.e and development before and A word of warning when buy- running the program. J changes after birth, as well as the child- ing software by post. Recently from 123456 to 612345, which is my teenage son ordered a Ms Clunies-Ross has the correct answer. QSavc from Personal Software software's 10 LET I - I234S6, Services of Coventry and it liberating sting » AS = STRS([> eventually arrived. He was I ;illay;n 11 LET BI =R1GHTS(A$,1) unable lo get it to work and told potential 12 LET CS = LEFTS me he needed a different lead. I telephoned the company and Catherine Clunies-Ross made (AS,LEN(AS)-I| was told a lead would be some very interesting and rele- 13 LET J - VALIBS + CS) vant points regarding women Looking at lines 1 1, 12 and i:

and their attitudes to home- ii should be possible to combine was not stamped, so we incur- computers (HCW May 10-16). ihem to the following: red 22p excess surcharge by the Most women arc socialised 11 LET J Post Office. The item still did from their earliest years to VAL telephone call to Coventry home. Unlike boys, they are nor When run, this gives a final in established that ii was not com- directed towards technological Bury the probably this correct J value of 112345. Now patible with my son's tape pursuits, and it is hatchet, micro will recorder. The person to whom 1 which inculcates a fear of com- try lisiing the program. You spoke ai PSS said they would puter hardware and the jargon owners noiicethat ihe end of line II refund the money rogether with Once again the inevitable has started duplicating itself, postage but when ihe refund ar- happened. A new magazine is computer will crash if you now inly for the amount directed published and in no time at all try to edit ihis line. Why it does of th marketing almost exclusively a the letters page is full of praises

this : Despite a letter detailing men. ti appears in the esoteri and knock-downs from readers something of. the postal surcharge, cost ol language of ihe hardware in incorrect result 36p for a padded envelope and especially the more than BOp to return till when writing programs. item, all my son received back dm- Newton, Sutlon Cold was his initial outlay of £15.95. field, W Midlands

' HOMI-.fOMI'l UNli Wl-.l-.kl.y !i % -

LETTERS improving on Weekly would probably not ex- bit: "all eniries become the pro- ist and he would not have the perty of Commodore Bus' Munch Maze opportunity to put his opinions Machine on submission". When husband and 1 With reference lo HCW no. 9 my This appalling postscript ot home wc talked about it bi- - l marvellous hanks for thai 5. If Mr Williams went into means programmes have ll the early hours, and at my game Munch Maze by Simon software, would we com- producing he atpynijlii over their work, c Scot!. It's the first program uggestion bought a himself realise wrlat the costs dispatched — CBM can do \ from any magazine that I've got are. In order to sell software n properly. Now my housework is got iut of the way, or 1 dash home packages, distribution, promo- t the agn I did encounter a few pro- blems, which were easily solved: rom my part-time job. and in- tead of watching TV for the o 1 and handling needs to be I would strongly advise our or so before picking shortened it, putting the surpli my prospeciivi o line 66. on lo their work uniil CBM In line 54 I changed the change their rules. After ai END command to GOTO 95. adventure game. Even the cof- to be the case. There are now 16 since CBM cannot claim th; Then 1 added a line 95 which for their sof- diffcrent. Most of my friends computer magazines {weekly they undercharge read: 95 FOR C = I TO 600: ware, must be made l NEXT: SY564802: END. This are now hooked too, and my and monthly) and all of them they get treat those who write it for thet le the program automatical- neighbour is trying to her prosper from the software her a micro. in fair way. ly clear itself after it had run. husband lo buy a and proper also using My computer found an er- I am our Dragon While the British soflwar 32 to its full potential, and in- ror in line 41. so I took out T1S Most of Ihe money this industry is strugling to establish buying thai new set of 1 also took out all stead of = "OOOOOO". e in this codes of practise and general' of line 514. pans I wanted, have sent for a money that gels ploughed back accepted guidelines for [he p Line 57 should be: IF AS typing course and am learning into new products. I do not see = 198 THEN 200. Basic programming in the even- disturbing to see this large Believe me. ladies, it isn't Finally, I added a clear ings. as hard as you think. You just driving around in status-ful foreign concern behaving i need logic, and every woman cars. By and large, they drive whal may be interpreted as screen wasn't clearing properly. around in station wagons so were your two- trying lo get publically I Munch Maze i 5 great fun to that ihey can go, like itinerant call on CBM year-old to do something you play, and I'm looking forward gypsies, from one computer fair change this policy! to VIC-20 wanted them to do! your new game. to the next selling their wares, Thomas Donald, London NW6 Cox, Deal, Kent Now 1 actively enjoy going ML. since the established distribu- tion system into bookshops and my husband, and 1 am often asked about tricky computer problems, which isn't half good 8. What would Mr why I stopped A woman's for the ego! Williams think if 1 wrote a letter place is by Jean Symonds, Sou then d-on lo The Bookseller, encouraging watching BBC's people to photostat books from micro series her micro the library, and not buy a £4.95

hardback from him, because I felt price was each week and find it makes a Ihe of books loo McNaught-Davies' view: reading : change from about S oftware by home-computer language. With the dish of the day and other the book Incidcn Radal: his altitude, he strikes me as en- tirely ihe wrong person to be is particularly in- presenting ihe BBC's scries. terested in Catherine Clunies- Man's View on software piracy, I gave up watching it some Ross's One Woman's View there are eight points thai Geof- time ago because programmes (HCW May 10-16), because un- frey Williams should seemed designed to confuse and til recently I was one of those myslify rather than ihe rev

imen who fell computers I do agree that there is a lot 1. If the 'buy and try' of hype churned oul by the in shops are offering such a good My husband is a computer Play the game, dustry, but I can't sec that th deal and people aren't copying specialist, so over the years 1 Commodore Beeh has done much to help have acquired enough computer their material, why don't Ihey people sec through ii. Indeed, knowledge to get by in social of produc- 1 recently sent lo Commodore when you look al the ads Tor evening and demonstrations ing software the] UK for a copy of their software their machines it's apparent where the sole topic of conver- people 'buy and try" the o catalogue, and received a copy ihat they're playing ihe si sation was computers, but I thai ihey produc of Vlcsofl, a quarterly publica- everybody else. never really knew what they In a , televis 1. Xo\ unVs tion trtvitV. CWtA p\a« \t> were all on about. the wrong medium for that kind £4.95 distribute to all VIC 20 owners. Then of computer programme. ordinary hardback 1 would like to express my 1 for with It would be more sensible concern about the Commodore to have it on the radio, so com 3. Books ha e been around Challenge Software Writing d I went reluctantly, expec- puterists could have their t el lie: d iilt:- which ; g a boring evening. [on Competition, details of plugged in lo their computer: My husband and friend existing distribution systems are given in this booklet, CBM while listening. Also, this is on< :tc busy when 1 was asked out and established publishers. For are looking for programs and area where the Beeb should gin "which this of the blue, out of software, most of the selling is say: "Should yours reach the vould you use to open a cell done through magazines such as high standard set by Com- door?" I found they were play- Home Computing Weekly. modore. , .we will offer to sell it 4. Mr Williams should worldwide — with a royalty I had thought computer that if these ads did lo games consisted of Space In- remember payment you."

' :s and Pacman. My sugges-

worked, and after that I not charged, Home Computing doubt re comes the nasty

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