I

l

1

j

Y |\ I I /\ ]£ Serving Timex-Sinclair

I | \| J X Personal Computers

A PUBLICATION OF THE HARVARD GROUP

VOL. 4 NO. 4

ISSN 0273-2696

APR, 1983

IN THIS ISSUE

SINCLAIR CLARIFIES PARTS POSITION

8K Programs

Life Expectancy . 14

Office Manager . 20

Book Review Crunchers — 21 Simple Games for the Timex/

Sinclair 1000 2K . 9

Classified Ads . 21

Dear Editor . 12

Machine Code Easier Loading for

MC Utilities . 10

Hardware Project Green and Black and

Read All Over . 16

Hardware Review

The Parrot . 8

News, New Products .... 1 , 2

POKE Graphics . 18

Program Improvements ... 15 Software Review

RAM-Dr ive . 6

Syntax Errors . 3

Title Framing and

Centering . 3

Users' Groups . 3

Vendor Report . 4

Index to Advertisers

Brainchild Computer . 4

Byte-Back . 6

Discount Software . 16

E-Z Key . 9

Frog Software . .10

Intercomputer . 13

Kopak Creations, Inc... 17

Melbourne House . 18

Memotech Corp. . . . . . 7

R.I.S.T . 15

Sinclair . 11

Sof tsync . 5

Zebra Systems . 19

Sinclair only sells replacement parts to kit owners who received damaged parts with their kits. Contrary to some reports, parts are not generally available for all ZX/TS owners. Also, Sinclair no longer sells the kits.

TIMEX SLASHES PRICE

Timex lowered their TS1000 price to $69.95 and extended the $15 rebate deadline to April 30. The TS2000 release date is slated for the second quarter but most observers agree this is optimistic. Still no information on the release of the 16K TS1500.

NEW ZX/TS PUBLICATION

Timex-Sinclair User . a monthly magazine imported from the U.K., debuts in N. America in May. Price: $2.95 per issue, $29.95 per year. ECC Publications Inc., 49 La Salle Ave., Buffalo, NY 14217, 716/834-1972.

EXCLUSIVE ZX/TS EXHIBITION

SIN-TIME Exhibition will sponsor 10-15 ZX/TS vendors at the Dunfey Houston Hotel on April 28-9 from 10A-8P. Adult admission is $10 for both days, includes subscription to SIN-TIME Review. Michael Robinson, SON Productions, POB 742163, Houston, TX 77274.

SOFTWARE COMPANY SEEKS PROGRAMMERS

Pegasus Micro Systems is currently looking for programmers to write new software. Royalties range from 50 to 80 percent of profit, depending on the amount of work your program needs to reach market and what per¬ cent of that work you contribute. Pegasus also just announced new ZX/TS software. For details, contact Pegasus Micro Systems, POB 397, Chestertown, MD 21620.

1

NEW PRODUCTS AND SERVICES

Easy Eye Filter gives yellow screen on b/w TV or monitor. Comes with stick-on fasteners, 10" x 12" trim- mable to smaller sizes, special order larger sizes. $12.95 plus $2 P&H. Strap Down is a pre-cut and punched strap to hold your ZX/TS and RAM pack. Includes cable clamp to organize cables, $5.95 plus $1 P&H. Artisan Electronics, POB 6631, Portsmouth, VA 23793.

Individual instruction packs on ZX/TS video, keyboard, loading and saving, and memory packs. Covers trouble shooting, tips and hints.

$7 each, Spectra Computer Products, POB 41795, Tucson, AZ 85717.

Free membership to Timex Computer Club and monthly newsletter. Timex Computer Club, Margot Murphy, POB 2655, Waterbury, CT 06725.

ZX/TS bulletin board free, $15 one¬ time membership fee activates spe¬ cial features — in Nashua, NH. Call 300/1200 baud data-line 603-888- 6999. Chuck Oropallo is SYSOP, 6 April Dr., Nashua, NH 03060. Leave messages on-line for user 10053 or mail to Jim Giddings, 77 Ives St. #305, Providence, RI 02906.

16K Mail Master program has edit and search routines. Options are: add names, list, edit, inform, search/view, and search/print. Sup¬ ports ZX/TS-compatible printers.

16K Data Master has full edit and search routines. 16K Chart Master generates and analyzes bar charts. Tape with manual $6.95 each. Free catalog available. L. Harmon, 4909 Clearlake Dr., Metairie LA 70002.

CFASTDATA utility lets you write data to tape from strings, arrays or memory locations. Helps trans¬ late BASIC programs with WRITE and INPUT statements. Needs 16K or more, $20 plus $1.50 P&H. CFAST- DUET has two utilities, CFASTLOAD

and CFASTDATA. Use together to write and load quicker. Needs 16K, $27.50 plus $1.50 P&H. Cosmonics, POB 10358, San Jose, CA 95157.

Memotext word processor with edit¬ ing features puts 32-character lines on screen. Memopak Assembler codes, edits Z80 source programs and assembles into MC. $49.95 each, Memotech, 7550 W. Yale Ave., Denver, CO 80227, 800/662-0949.

ZX/TS XFORTH language uses a simple one word call to return to BASIC. Needs 16K, leaves 10K for user code and dictionary enhancement. Also has extra utilities such as PLOT, CLS, RAND. Pre-publication release offer until April 23, $14 plus $1 P&H. Hawg Wild Software, 7575 Cantrell/21, Little Rock, AR 72207.

New free catalog of computer inter¬ ference control products (#831) helps cut out interference on your ZX/TS. Electronic Specialists, Inc., 171 South Main St., Natick,

MA 01760, 617/655-1532.

Z-TOOLS machine code utilities in¬ clude: MERGE combines two BASIC

programs; RENUM renumbers selected lines, includes numbered GOTOs and GOSUBs and flags those with expres¬ sions; COPY and DELETE selected blocks of lines; VERIFY checks tape contents against memory. Two 16K versions: one addressed to 14-16K,

and to 8-10K. $14.95, Sinware, Box

8032, Santa Fe, NM 87504.

Reverse Video Module converts char¬ acters to white on dark backround. Module with instructions, $8.95.

16K Easy Graph converts data into bar graph, $9.95. 16K ACZ General

Ledger records ledger transactions, handles up to 400 entries, $29.95. Cottage Technology, 5720 W. Little York, Suite 178, Houston, TX 77091.

Z-XLR8 tape storage system SAVEs and LOADS files 6-10x faster than standard LOAD/SAVE. Error checking

2

insures proper program loading. Cassette tape version can relocate between 8-32K, needs 16K, $11 ppd. EPROM version resides between 14- 16K, $21 ppd. Advanced Interface Designs, POB 1350, State College,

PA 16801, 814/237-9268.

Sunbelt Conference on Educational Computing, June 1-4, offers ZX/TS instruction for both novices and advanced users. Films, exhibits, demonstration lab, and public do¬ main software exchange also in¬ cluded. Dr. Jerry Willis, c/o College of Education, Box 4560, Texas Tech University, Lubbock, TX 79409, 806/742-2381.

16K Biorythm/Compatibility program computes emotional, physical and intellectual cycles for any month. Gives degree of compatibility be¬ tween two people based on bioryth- mic cycles. Tape $9.95 plus $1.50 P&H. Software Unlimited, POB 147, Grandview, MO 64030.

TITLE FRAMING AND CENTERING

You can dress up displays by adding the following listing to the beginning of your programs.

Title Framing accepts up to 29 characters and centers them on any line from 1 to 20.

Inverse graphics are:

Line 20 — graphic 5, 8 Line 40 — graphic 6 Line 50 — graphic 7

Try graphic A (checked border) or asterisk (shift B; inverse asterisk border) in place of all graphics for variation.

RUN in FAST, BREAK to exit.

SYNTAX ERRORS: In R. Hensley's Expanding Existing 16K Programs, Jun.82, Jerry Minchy reports that the last two POKES, step 4, are: POKE 16386,252 POKE 16387,254

USERS ' GROUPS

To annouce or locate a group not listed, drop us a line (with SASE) or call 617/456-3661. SYNTAX, RD 2, Box 457, Harvard, MA 01451.

Aberdeen, NJ: R.B. Mawby, 62 Avondale Ln., Aberdeen, NJ 07747, 201/566-7498.

Altadena, CA: Irving Helbling, 1785 La Paz Rd., Altadena, CA 91001, 213/797-3729.

Chestertown, MD: Baltimore Users' Group, POB 397, Chestertown, MD 21620, 301/348-5865.

Hillsborough, Pasco, Pinellis and St. Petersburg Counties, FL: TAS

BAM — Timex and Sinclair Bay Area Microcomputer Group, Mel Routt,

POB 644, Safety Harbor, FL 33572.

Lakewood, CO: Jim Sandon, 500 Vance #116, Lakewood, CO 80215, 303/233-3412.

San Francisco, CA: Users' Group of the Presidio of San Francisco, Fred Hall, 246 29th Ave., San Francisco, CA 94121, 415/221-4790.

Rio de Janeiro, Brazil: Walter Brandao, Rua Cesario Alvim, 55 Apt. 107, Bl.A 22261, Botafogo, Rio de Janeiro, Brazil.

W.C. Andrews, San Anselmo, CA

5 LET L=10 10 INPUT R$

20 PRINT RT L, y; "I R*; " I**

30 FOR N=@ TO 4.0 PRINT RT L- > /2+N; 'W

50 PRINT RT L + ) /2+Nj ’■**”

60 NEXT N SYNTRCTIC SUM:

(31- (LEN R$+£) > ✓

(LEN fl$+l>

1,(31- (LEN RS+2J

1,(31- (LEN R*+2J 10754- , 8K ROM

Toronto, Ontario, Canada:

Timex-Sinclair Users' Club, POB 7274, Station A, Toronto, Ont., Canada M5W 1X9.

West Palm Beach, FL: The South Florida ZX Users' Group, Bob Pearsall, 9220 Fountain Rd., Lake Worth, FL 33463, 305/967-7784.

3

VENDOR REPORT

CHANGE YOUR

TIMEX/SINCLAIR 1000 DISPLAY TO FULL COLOUR GRAPHICS

with

KOLORWORKS

LOOK AT THE FEATURES ! ! !

* Plugs into ZX81/1000 (edge connector)

* All text will run on the color tv

* Module contains it's own memory

* User defined characters & graphics up to

256x192 pixels

* Latest technology with TMS991 8 V DP

(32 sprite levels)

* Module contains extension of basic commands

including: PAPER/INK/BORDER/BIN/ SPRITE/OUT/INP / etc.

for $149.95

Use your KOLORWORKS immediately with a game cassette for $9.95

In response to complaints about undelivered software from SMUG, Sinclair Midwest Users Group direc¬ tor Robert Carroll says SMUG (ad¬ vertised in SYNTAX classifieds,

Mar. 82) and the users group have not been affliated since Mar. 82. Initially, the users' group lent a helping hand to the two entrepre¬ neurs who started SMUG. Carroll says they have no information on SMUG's present status or orders taken by them. But, the users' group would like to try to rectify the situation. Carroll says they do have some of the software SMUG was selling. Drop them a line with proof of order and non-receipt of goods (cancelled check, etc.) and they will try to fill your order. Address to: Attn. Lost Software, Sinclair Midwest Users Group, POB 13042, Fort Wayne, IN 46866.

This delightful game is designed for hours of fun using some of the color graphic capabilities of KOLORWORKS. The cassette also contain* a short program to familiarize you with some of the commands and graphics.

MAIL TO:

BRAINCHILD COMPUTER WORKS, INC.

P.O. Box 506 Pewaukee, Wl 53072

Price + Qty. Amount

KOLORWORKS	$149.95	—
CASSETTE	9.95
Shipping and Handling	4.95	1
Wi. Res. add Sales Tax
My Dcheck D money order enclosed	TOTAL

Name

Street _

City _ State _ Zip _

Please allow six to eight weeks for processing. Thank you.

For further information - Send $2.00 (credited to order) WATCH FOR:

"GAAMWORKS"-

Joystick Ports / Sound / Cartridge Slot

Unresolved problems with Norris Electronics? Originally of Slidell LA, Tracy Norris is now at: 410 S. Gatehouse, Apt. A, Metairie, LA 70001, 504/837-8152. Tracy did contact us, but we have not heard from his customers.

Aerco reports that their floppy disk interface has a 2 1/2 week production back-log. Aerco, Box 18093, Austin, TX 78760-8093, 512/385-7405.

Manager Ken Koster of Gladstone in Buffalo reports that they are now shipping out in-stock items in two to three days. He also clarified their phone numbers, reported last month. For orders only till 1AM, call 800/833-8400. For informa¬ tion, questions and problems, call 716/874-5510 (9-5 EST) .

M-Coder, a compiler from Kopak, is supposed to code 99.9 percent of all BASIC. After checking, Kopak discovered this is untrue and will discontinue the program.

4

3-Dimensional Graphics?

when you steer your Starlite fighter down the Zarway space corridor you won't believe your eyes because the graphics are so good and the game so fast.

$16.95

SOFTSY1MC, BtMC.

MOTHERSHIP 16K

For Your Timex/Sinclair 1000

You can find MOTHERSHIP and all of SOFTSYIMC'S wide variety of programs for the TS1000/ZX81 at your local retail store or write us for a free catalog and program listing. Prices range from $14.95 to $19.95.

Please rush me 1 MOTHERSHIP program. I enclose $16.95 i + $1.50 shipping and handling (N.Y. residents add sales tax).

□ Please send me a free catalog & program listing.

NAME _ I

ADDRESS _ j

CITY _ |

STATE _ ZIP _ |

SOFTSYNC, INC., 14 East 34th St. New York, NY 10016 I (212) 685-2080

SOFTWARE REVIEW

Product: RAM-Drive

Price: undetermined

ROM/RAM required? 8K/64K Printed listings?

Program listable?

Written in:

Written by:

From:

No No

Machine Code Peter Ulrick International Publishing and Software, 49 La Salle Ave. Buffalo, NY 14214

RAM-Drive is a machine code utility program that gives you powerful program editing comands. Peter Ulrick uses addresses 8192- 9215 in your 64K RAM to store ma¬ chine code subroutines that LOAD more than one BASIC program at a time, renumber programs, merge up to 20 programs, create free-stand¬ ing transferable data sets and more. The utility is menu-driven from MC but also uses command mode USR calls. It's like having a Disk

MODULES FOR:

TIMEX-Sinclair

MODEM $119.*

$149.“ ASSEMBLED

(RS-232) Port & Software Included)

64-K MEMORY $129.*

the "ULTIMATE MEMORY" FEATURES: $139.“ ASSEMBLED

• Battery backup ,

• PROM/ROM socket

• Reset Switch

• BYTE-BACK EXCLUSIVE FULL 64-K

The 0-8K area is available You can execute a copy routine (provided) to copy the TIMEX ROM into the 0-8K area of RAM then flip a switch and you have your operating system in RAM You can modify it and create your own customized operating system.

WHY PAY MORE FOR LESS FEATURES?

GET THE “ULTIMATE MEMORY" BYTE-BACK UM-64

A COMPANY YOU CAN DEPEND ON

BYTE-BACK CO. is the oldest and one of the world’s largest suppliers of modules for the ZX81 and TIMEX-Sinclair 1000 computers. There are thousands of BYTE-BACK modules in use with a track record of proven reliability.

RS-232 PRINTER INTERFACE Only $59* KIT $69* ASSEMBLED CONTROL MODULE 8 Relays, 8 Inputs, $59* KIT $69* ASSEMBLED

16K MEMORY UM16 $59 .* KIT $69 “ ASSEMBLED A TESTED Battery backup, reset switch, PROM/ROM socket PLUS. . .

1 year, 100% trade-in credit towards the UM-64.

BYTE BACK CO.

Rt. 3, Box 147, Brodie Road

Lees vi lie, S.C. 29070 _ d>

ORDER PHONE 803-532-5812

Add $4.95 shipping & handling to all orders. !■■■■ - ''<J\ 90 Day Warranty On All Modules. 10— Day Return Priviledge

Operating System without the disk.

Using RAM-Drive you can concat¬ enate programs on one tape with a command menu.

LOAD RAM-Drive, then load pro¬ grams you want to string together (one at a time) and store them in RAM-Drive's program stack (32-S4K area) with command S. A selection menu program writes in the BASIC area of your ZX/TS. You can swap any program from the stack back and forth into the BASIC area (1S-32K) with command T (trade).

Use the renumber command, this time a USR call, to change the line number and increment between num¬ bers of each program. You can then merge programs using another USR call. The result is one program from which you can call up any of the original short games. SAVE the new program in the usual way.

Other useful features of RAM- Drive are: RemFill, 31ock Move, Fetch, Kill and Wipe.

Mr. Ulrick's documentation gives examples for most functions along with a command summary list. However, most functions are called with USR commands which I found inconvenient. The program loads and moves itself, so you can't easily see the original code.

One other flaw — the documenta¬ tion doesn't mention that storing over 20 programs is difficult but possible. Each program you store takes up about IK, so depending on their size it is possible to store more. But, only 20 names can be listed on the screen.

RAM-Drive is a valuable and versatile utilities package.

P. J. Donnelly, Centerport, NY

RAM-Drive was originally marketed by ZX Users Group of NY (Box 560 Wall St., NY, NY) as Disk-M Multi¬ programming Features, $25 for non¬ members. 'RAM-Drive is in the pro¬ cess of becoming an International Publishing and Software product. Contact them for more info. — Ed.

6

TIMEX MAKES THE COMPUTER,

BUT WE MAKE IT TICK.

If you own a TS-1000 or ZX-81 computer and want to bring out the power within it, you’ll want Memotech. From easier input to high

quality output and greater memory, Memotech makes the add-ons you demand. Every Memotech peripheral _

comes in a black anodized aluminum case and is designed to fit together in “piggy back” fashion enabling you to continue to add on and still keep an integrated system look.

MEMOPAK RAM All Memopak RAMs are directly addressable, user transparent, are neither switched nor paged and no additional power supply is required. You can also choose the Memopak RAM which is just right for your needs. From economy to power. 16K RAM The Memopak l6K RAM is the most economical way to add memory to your TS-1000. It is fully compatible with the Timex or Memotech l6K RAMs to provide you with up to 32K of RAM. The 16K RAM also offers additional add-on capabilities through its “piggy back” connection. 32K RAM The 322K Memopak enables you to execute sophisticated programs and store large data bases and like the l6K RAM is fully compatible with Timex’s or Memotech’s l6K RAMs to give you a full 48K of RAM. 64k RAM The 64K Memopak is powerful enough to turn your TS-1000 into a computer with capabilities suitable for business and educational use. It accepts such BASIC commands as 10 DIM A (9000) . MEMOCALC Memocalc, our spreadsheet analysis

software, enables TS-1000 users to perform complex number crunching routines with ease. With the 64K RAM a table of up to 7000 numbers with up to 250 rows or 99 columns can be specified.

Quick revisions can be achieved by entering new data to your formula.

MEMOTECH KEYBOARD For ease of operation, the Memotech keyboard is a high quality standard typewriter keyboard, with TS-1000 legends. The keyboard is cable connected to a buffered interface which is housed in a standard Memopak case and plugs directly into the back of the

TS-1000 or other Memopaks. MEMOPAK HRG The Memopak High Resolution Graphics, with up to 192 by 248 pixel resolution, enables display of high resolution “arcade game” style graphics through its resident 2K EPROM, programmed with a full range of graphics subroutines. CENTRONICS PARALLEL AND RS232 INTERFACES Memotech’s Interfaces enable your TS-1000 to use a wide range of compatible printers. The resident software in the units gives the complete ASCII set of characters. Both Memopak Interfaces provide lower case character capabilities and up to 80 column printing. The RS232 Interface is also compatible with modems and terminals.

SEIKOSHA GP IOOA PRINTER The Seikosha GP 100A uses a 5x7 dot matrix printing format with ASCII standard upper and lower case character set. Printing speed is 30 characters/second with a

maximum width of 80 characters. The printer uses standard fanfold paper up to 9-1/2 inches wide. The GP 100A is offered as a package including cable and

interface. Other printer packages are also available through Memotech.

ORDER AT NO RISK. All Memotech products carry our 10 day money back guarantee. If you’re not completely satisfied, return it within ten days and we will give you a full refund. And every Memotech product comes with a six month warranty. Should anything be defective with your Memotech product, return it to us and we will repair or replace it free of charge. Dealer inquiries welcome. To order any Memotech product use

the order coupon or call our toll-free number 800/662-0949.

TS-1000 is a registered trademark of Timex Corp.

UvUyi^ii

CORPORATION

7550 West Yale Avenue, Denver, Colorado 80227, 303/986-1516, TWX 910-320-2917

Mail To: Memotech Corporation, 7550 West Yale Ave., Denver, CO 80227 Code: SIX-4

Price* . Qty. Tl

1 16KRAM	$ 49.95
\| 32KRAM	99.95 /
\| 64K RAM	149.95
\| Memocalc	49.95
1 Keyboard with Interface	9995
1 High Resolution Graphics	9995
1 Centronics Parallel Interface	74.95
, RS232 Interface	99.95
\ Printer Cable	19.95
[ GP 100A Printer Package**	399.00
• Shipping and Handling	4.95	$ 4.95
1 Thx (Colorado residents only)
1 TOTAL $
1 All prices quoted in U.S. dollars. Prices and specifications subject 6 \| *Please add an additional $5.00 for printer shipping charges. 1 □ Check □ MasterCard □ Visa	change without noti	l 1

l ' , ,
1 Name 1		Phone number	1
j Address
1 City L_		State Zip	1 -1

HARDWARE REVIEW

Product: The Parrot, Voice

Synthesis Module From: R.I.S.T., POB 499, Fort

Hamilton Sta. , NY 11239 Cost: $89.95 plus $4 P&H

Allop'hone concatenation simply means stringing fundamental sounds together. This is the speech syn¬ thesis method used in The Parrot.

R.I.S.T.'s module, The Parrot, produces 64 separate allop’nones. R.I.S.T. used Voicetech's general purpose speech development kit (see Radio El ectronics. Mar. 83) combined with chips and software to produce a cost effective ZX/TS speech unit.

Using Parrot's pilot program with documentation, I made the unit say "hello" almost immediately.

The voice is, unfortunately, chat "tinny" mechanical one you assoc¬ iate with first generation robots. Parrot comes complete with a reset button, and ZX/TS expansion bus, and provides for an external power supply to power other peripherals through the unit. The Parrot func¬ tions as an I/O port. R.I.S.T. told me Parrot uses ports 0-15 and 54-80, but the initializer program uses only location 03 for IN and OUT commands.

Documentation is professional and good but does not explain the machine language initializing rou¬ tine, which uses the calculator stack. Most annoying is the lack of OEM specs and schematics on the voice chips. The crash course on voice synthesis in the documenta¬ tion might be superfluous for some users and certainly could use a bibliography.

Parrot has two minor flaws: you must supply your own speaker, and the external power jack is a sub-mini (these are hard to find).

Overall, R.I.S.T.'s Parrot is an excellent unit and performs up to and beyond my expectations. It has great potential as an annucia- tor, games, clocks and applications

for the handicapped.

Parrot does not speak words you type in. You enter words phoneti¬ cally, including clicks, stops and pauses after the appropriate three character phoneme or sound codes. R.I.S.T. plans to develop text-to- speech software. Parrot's expanded loader program allows cursor edit¬ ing, which is a big plus.

R.I.S.T. tells me that future Parrots (starting Apr.l) will in¬ clude a tape of their long version phoneme entry program (16K needed). After using the 10-line BASIC entry program I don't look forward to keying in the 80 or 90 lines in the longer version.

Paul Donnelly, Centerport, NY

If you already own a Parrot and have a ZX81/TS1000, R.I.S.T. says you should change the MC program, line 6, pg.6, from: (for ZX81s)

103 ENTER to 130 ENTER, (for ZX80S with both ROMs) it stays 43 ENTER.

SPEECH SYNTHESIS

Voice or speech synthesizers combine hardware and software into systems that let your computer talk to you. Computers and Electronics and Radio Electronics (Mar. 83) cov¬ ered two methods of producing human voice sounds on ZX/TS computers. They are: Pulse Code Modulation and Linear Predictive Coding.

Pulse Code Modulation (PCM) uses silicon chip recordings (digi¬ tized) of a voice speaking selected words. A human voice encodes words in a ROM chip resulting in life¬ like sounds. PCM's disadvantage is you must have ROM addresses for all desired words.

Linear Predictive Coding (LPC) feeds a combination of random and periodic signals to the electronic voice tract. These periodic and random signals are modulated digi¬ tally to produce unique individual sounds. But, these sounds have an unnatural, mechanical ring to them.

8

BOOK REVIEW

Voicetech sells units that use the LPC technique (covered Mar. 83, Radio Electronics) . R.I.S.T.'s Parrot includes Voicetech's evalua¬ tion kit and necessary ZX/TS hard¬ ware. These units produce sound by concatenating allophones (individ¬ ual unique sounds) into an intelli¬ gible word or phrase.

Which technique of speech syn¬ thesis is better? Pulse Code Modu¬ lation produces a better sound, but costs more both in dollars and memory space. Current versions of Linear Predictive Coding are hard on untrained ears (it's similar to listening to someone with a heavy accent). But, LPC has potential for infinite speech and the quality will no doubt improve.

As the micro market grows more competive and peripheral prices drop coupled with increased memory size of most personal computers, both will become viable methods of speech synthesis.

Paul J. Donnelly, Centerport, NY

ITS HERE!!

The keyboard you have been waiting for!

A LARGE 60 KEY TACTILE FEEL KEYBOARD (MEASURES 10" x 4") THAT PLUGS INTO THE SAME CONNECTORS AS EXISTING KEYBOARD ON YOUR ZX81 OR TIMEX SINCLAIR 1000. IT HAS ALL SILKSCREENED LEGENDS IN 3 COLORS ON THE BASE; MOLDED LEGENDS & GRAPHICS ON KEY TOPS; 8 AUTOMATIC SHIFT KEYS (NO SHIFTING REQUIRED) FOR EDIT, DELETE, SINGLE & DOUBLE QUOTES, COLON, SEMI-COLON, FUNCTION & STOP; 5" SPACE BAR; 2 SHIFT KEYS; NUMERIC KEY PAD.

ONLY $84.95

MASS. RESIDENTS ADD 5% SALES TAX SHIPPING & HANDLING $4.00/UNIT

DELIVERY 4 - 6 WEEKS. QUANTITY DISCOUNTS. WE WILL ACCEPT MC/VISA. PLEASE INCLUDE #'S, EXP. DATE AND SIGNATURE. FOR MORE INFORMATION SEND SASE. SEND INQUIRIES, CHECK OR MONEY

ORDER TO: E-Z KEY SUITE 75B

711 SOUTHERN ARTERY QUINCY, MA 02169 617/773-1187

Title: Crunchers — 21 Simple

Games for the Timex/Sinclair 1000 2K By: Yin Chiu and Henry Mullish

From: McGraw-Hill Book Company

Princetown Road Hightstown, NJ 08520 609/426-5254

Price: $8.95 (softcover, 137 pp.)

Yin Chiu and Henry Mullish are computer professionals and polished writers. Their expertise produced an imaginative and useful book. New Timex Sinclair owners will find the games fun and original and also acquire programming skills while working through Crunchers.

Each game occupies its own chapter. This convention allows: an introduction to the game, the program listing, keyboarding notes, points of interest (programming techniques) , and possible adapta¬ tions (improvement hints).

Crunchers includes games in every imaginable category. You get card and dice games, skills testing games, invading aliens, spelling and math games, shooting galleries and board games.

I am particularly impressed by the book's appearance. It is well designed and illustrated. Program listings are done in easy-to-read print, and keyword entries are done in boldface type. Keyboard hints list required graphics characters.

Crunchers is an excellent book for Timex Sinclair beginners. It provides hours of fun and valuable instruction. It is well written and programmed. The authors sum it up best with, "none of the programs requires more than the 2K of random access memory (RAM) that is built into the computer. Despite the restriction imposed by the size of available memory, you will be sur¬ prised at the wide range of games that are possible."

John C. Connell, Neptune Beach, FL

9

EASIER LOADING FOR MC UTILITIES

Many machine code utility pro¬ grams reside in high memory above RAMTOP. Usually, utilities are saved on cassette as a BASIC source program and the MC is stored either in a numeric array, string varia¬ ble, or REM statement.

Yet, using MC utilities can be a chore. The usual procedure is:

-POKE 16388 and 16389 to establish the new RAMTOP.

-Execute NEW to reinitialize the stacks under the new RAMTOP.

-Load the utility source program. -Run the utility source to move the MC above the new RAMTOP. -Execute NEW to dismiss the utility source program.

Now, you load or enter the program your MC program will work on.

You can arrange the utility source program to do all these steps automatically. First, you

Sinrlair ! Computing

Not just another newsletter, Sinclair Computing is a typeset magazine with color illustrations, published monthly. If you own a Sinclair or Timex/Sinclair Computer you need Sinclair Computing. Every issue is packed with informative Articles, New Products, Users Groups, News Bits, Letters, Ask Sinclair Corp., Reviews, Tutorials, Hardware Projects (many for under $10), Programs, and Games.

FOR JUST $2.95 PER ISSUE

YOU CAN MAKE THE MOST OF YOUR SINCLAIR or TIMEX/SINCLAIR COMPUTER.

transfer the MC from its original location (a REM statement, for example) to a location below the present RAMTOP but above the future one. Next, the source program POKES 16388 and 16389 to set the new RAMTOP. It then executes NEW, wiping itself out and reinitializ¬ ing the stacks.

During the MC transfer the machine stack is still active. Consequently, the machine code's final location can't extend too high into memory. Assuming your POKE operation (used by the source to transfer the MC) just adds or subtracts (for example, adding a starting address to a byte index counter), only 44 bytes must be avoided below the initial RAMTOP.

If you have 16K, you can relo¬ cate the MC to addresses as high as 32723. If you have the available memory, you can start the MC at location 32000, and allow up to 724 machine code bytes.

To add an auto function to your source program, add a short routine (I usually start at line 9000) consisting of the SAVE "(label)" instruction followed by GOTO 0. To save your source program, hit GOTO 9000. When you load your program it automatically resumes with the GOTO 0 line. (I use GOTO 0 rather than RUN in case the MC is stored in a numeric array or string varia¬ ble — RUN would wipe it out.)

Following is an illustrative source program that assumes a 20- byte MC program and a tape save name "PGM".

If after your first issue you are not fully satisfied... cancel your subscription for a FULL refund.

Sinrlair

Lome

omputing

BOX 95-SC

Glenmont, New York 12077

Sinrlair . Lomputing

□ , □ ,

one year for just $36. two years for just $65.

Enclosed Is my check or money order.

SlX^l

D. A. Kerr, Dallas, TX

1 REM (20 BYTES OF MCI 10 FRST

20 LET R =32000

30 FOR I = 16514- TO 16533

4-0 POKE R , PEEK I

50 LET R=R + 1

60 NEXT I

70 POKE 16388,0

80 POKE 16389,125

90 NEW

900© SRUE "PGM"

9010 GOTO 0

SYNTACTIC SUM: 10019, 8K ROM

io

For ZX81 orTSlOOO

software savings, rip off tliis ad.

□

THE STAMP COLLECTOR (#31) Inventory and store up to 600 SCOTT numbers in a single session show¬ ing quantity on hand, by major classifica¬ tion, and provide full want list support.

□

VU-CALC (#11) This program con¬ structs, generates, and calculates large tables for financial analysis, budget sheets, and projections. An immensely powerful analysis chart.

□

SUPERMAZE (#34) Navigate your way through a three-dimensional maze, with trapdoors, gold bars, marker stones, and compass. Ten separate mazes. Three- dimensional graphics.

□

PERSONAL FINANCE PLAN¬ NER (#28) Perform calculations, finance a house, a car, keep savings accounts, repay loans and calculate an am¬ ortization schedule which can be generated for any of the financial programs.

□

SUPER MATH (#14) Drill yourself on addition, subtraction, multiplication, and division with five levels of difficulty. Each problem graphically depicted.

□

THE HOME IMPROVEMENT PLANNER (#29) Store up to 20 room measurements (length, width, height), compute total area in each (wall, floor), estimate costs of painting, wall papering and carpets and draw house blueprints.

STATES AND CAPITOLS (#32) PINBALL (#35) Plays like real pinball Test yourself on the fifty states and their complete with flippers, bumpers, "nudge,”

capitols. Three options of review are availa- bonus points and more. Uses fast, efficient

ble. (1) States, you provide capitols. (2) machine code to choose its moves.

Capitols, provide states. (3) A mix of states and capitols.

THE FLIGHT SIMULATOR (#6) STOCK MARKET GAME (#27)

Take control of highly maneuverable light Bull or bear? This realistic simulation lets

aircraft. With full controls, instrumentation you analyze information, buy and sell

and navigational aids to avoid hazards in stocks, take out and pay off loans ... and

landing. win, if you can accumulate $50,000 in

“The Market.”

CHESS AND CHESS CLOCK FORTRESS OF ZORLAC (#36)

(#7) Six levels. All the legal moves includ- A super fast game in which you are the

ing castling and enpassant. Keeps a sepa- commander of a fleet of spaceships. Your

rate record of plays made for easy reference. mission is to rid the galaxy of the dreaded

Play another opponent or match wits with alien, ZORLAC.

the computer.

BACKGAMMON AND DICE (#8) ATOR THE ABC GATOR (#33)

A perfect blend of chance and skill. Uses Designed to teach recognition and sequence

machine code to choose its moves. Full of the alphabet. Combines computer

game including graphics board, rolling dice, instruction, music and video games, and double cube. Play the computer or another opponent.

THE CUBE GAME (#9) The cube SPACE RAIDERS, BOMBER

can be displayed in three views: (1) Solid; (#5) Timex/Sinclair version of the popular

(2) Two-Dimensional (unfolded); and (3) arcade games full of bombs and rockets

See-thru cube (3-D). You start with the and collisions with skyscrapers,

cube solved, set it up any way you like, or pick up from a previous session.

REAL ESTATE INVESTMENT FROGGER (#37) Plays like the

ANALYSIS (#30) Two different invest- arcade game. Hop the frog over traffic,

ment strategies. The first selection allows snakes, crocodiles, and treacherous diving

the user to choose between renting or buy- turtles before time runs out.

ing. The second selection consists of a

detailed analysis of the rental investment

property.

Sinclaiif the company that invented the world’s most affordable computer, has invented a way for you to order the most affordable software— right from your home!

You’ve never had this wide a selection before.

You can play games that challenge you, instead of bore you. You can learn new household applica¬ tions and business programs that reduce work dramatically.

Only Sinclair offers this special software savings. Only ZX81 or Timex TS1000 owners are eligible.

The more you buy, the more you save.

A serious Sinclair software offer.

The first cassette you buy, you buy at normal cost: $15.00. But every cassette thereafter, you get at a savings.

The list below explains how much you save, based on how much you buy. It couldn’t be easier.

You were smart to buy the ZX81 or the TS1000. You’ll be even smarter to take us up on this software offer. All cassettes listed at left work on both the ZX81 and the TS1000. All cassettes are 16K, which means you need the 16K Memory Module. (If you want more information on this component, please write Sinclair at the address listed below.)

But don’t delay. This is a limited time software offer while supplies last.

How to order today!

Just call our toll-free number and use your MasterCard or VISA. Or send this ad with a check or money order. It’s as easy as that.

Call toll-free: 800-543-3000. Ask for operator 509. In Canada call 513-729-4300, operator 509. Have your MasterCard or VISA ready when call¬ ing. Phones open 24 hours a day, 7 days a week. These numbers are for orders only.

If you simply want information, please don’t call, write Sinclair Research, Ltd., 2 Sinclair Plaza, Nashua, NH 03061.

(Sorry, no refunds on software. Defective cassettes will be replaced.)

_ Call toll free

800-543-3000

Ad. code: Mail to: Sinclair Research, Ltd.

„ One Sinclair Plaza, Nashua, NH

B4SX 03061

Check the boxes of all □ Check or money order

cassettes you want at left. _ enclosed. _

Fill in the space beside total for your total payment

□ 1 cassette: $15.00 Plus Shipping/Handling $5.00

□ 2 cassettes: $25.00

(save $5.00) ( <

□ 3 cassettes: $35.00 Total:

(save $10.00) .

□ 4 cassettes: $45.00

(save $15.00) _

□ 5 cassettes: $50.00

(save $25.00) rye nniiaro

□ 6 cassettes or more: U UoUars

$10.00 each $ _

_ ■ _ ■ _ ■ _

Sinclair

DEAR EDITOR

I need ZX/TS business soft¬ ware. I use four of them in four stores — three as satellites and one as a master file. Can anyone help me locate general ledger, accounts receivable, accounts payable, and payroll ledger programs?

Also, I had a problem with my ZX printer — the print faded and the motor slowed on heavy graphics.

I solved this problem with a 12V, 4A power supply and a Radio Shack variable voltage 1 1/2 A voltage regulator IC. I built the circuit shown on the IC package and set the voltage at 9.8V regulated to 1 1/2 A. My printer no longer slows and my computer runs cooler.

Rodney Gowen, Oregon City, OR

SYNTAX (Feb., Mar.) classified ads and new products sections carried ads for business software. CED sells a bookkeeping program (Mar. Class Ads). Finance software pro¬ gram listings are available from Grombacher (Feb. Class Ads). Banta Software's electronic spreadsheet program, Screen-Calc, may suit your needs (Mar. New Products). Cash Journal General Ledger program is from DEC (Mar. Class Ads). Mernotech also offers a spreadsheet program called Memocalc (Feb. New Products). Also, SYBER (1345 Diller Rd., Ocean Springs, MS 39564, 601/875-3682) has a Financial Manager program. Mindware (15 Tech Circle, Natick,

MA 01760, 617/655-3388) also has business programs. Write for de¬ tails on programs before you buy. Companies won't make exchanges unless the tape is defective. — Ed.

How are programs locked? I don't understand how LIST command can be turned off. Also, if you have a program with saved DIM and LET statements, how do you restart? Do you GOTO the first statement or some point later in the program?

Can you transfer a numeric value like LET K=1000 to a string like K$, and to a string slice like K$ (4 TO 8)?

I have several subroutines that I use a lot. Is it possible to load one from tape and then load a second without clearing the first?

Ronny Richardson, Chamblee, GA

First, you can't turn LIST off easily, but you can render it less useful by causing the display file to malfunction. However, these methods won't work against anyone who understands them, so they find limited use. Start programs with saved arrays by going to a point after the DIM statement. Re-execu¬ tion (RUNing or GOingTO a line before the assignment) clears stored data.

Use STR$ and VAL to change numbers to numerals and back again.

Finally, you can't directly load two programs from tape into the computer. You can load the first program and POKE it above RAMTOP, then load the second pro¬ gram and POKE down the first. Siriusware and Sinware sell pro¬ grams to do this. Also, see the review of RAM-Drive (p.6) and the listing for Z-Tool (p.2) in this issue of SYNTAX. — Ed.

Does anyone have any suggestions for the following problems? — Ed.

I recently bought and hooked up a surplus keyboard to my ZX/TS. I used characters from a magazine. Where can I get custom keytops?

Earl Close, Ontario, Canada

I have a ZX81 with 64K RAM and ZX Printer.. When saving programs my recordings have developed a click, click that ruins the save when the printer is connected. Do you have any solutions?

Michael Roberts, Des Moines, IA

12

INTGRCOMPUTCR IMG

HARDWARE AND SOFTWARE PACKAGES MAKE THE MOST OF YOUR TIMEX SINCLAIR 1000

MEMOTECH PERIPHERALS

MEMORY EXPANSIONS

► 16K RAM # PL7002 $ 59.95

• 32K RAM # PL7003 $ 99.95

• 64K RAM # PL7004 $ 149.95

► HIGH RESOLUTION GRAPHICS (16K RAM)

# PL7007 $99.95

• PLUG-IN KEY BOARD # PL7011 $99.95

► CENTRONICS PARALLEL INTERFACE # PL7005

$ 74.95

► MEMOTECH RS232 INTERFACE # PL7006

$99.95

PRINTERS

► SEIKOSHA GP-100A PRINTER The revolutionary low- cost dot matrix impact printer— Uses up to 9.5” paper

# PL7008 $349.00

• SEIKOSHA GP-250X PRINTER The most intelligent programmable graphic printer— Uses up to 9.5” paper

# PL7009 $449.00

► PRINTER-INTERFACE CABLE # PL7010 $19.95

► MEMOCALC Software on plug-in EPROM cartridge— Spread sheet analysis— I !o to 7000 numbers (when used with 64K) # BS200C $59.95

EDUCATIONAL ADVENTURE SERIES

► EDUVENTURE I Answer the questions encountered in each classroom until you make it outside for RECESS and the surprise that awaits you there. (Grade level K-3)

# ED3001 $12.95

► EDUVENTURE II Each new situation requires either your ingenuity or knowledge (or both) to avoid being p" sent to the principal’s office. (Grade level 4-6)

# ED3002 $12.95

► EDUVENTURE III Solve complex puzzles to outwit your teacher and achieve the highest scores. (Grade level 7-9) # ED3003 $12.95

► EDUVENTURE IV An agile mind and quick reflexes will get you through this maze of mysterious situations- to your DIPLOMA. (Grade level 10-12) # ED3004 $12.95

All programs use 16K RAM.

QSAVE A Hardware-Software Combination— Allows a baud rate of 4000 to be achieved com¬ pared with only 250 on the normal SINCLAIR ZX81— Loads and saves a full 16K in only 29 seconds— Works with 16K and 64K. # PL7001 $37.95

NEW products coming soon: Software on ROM/EPROM CARTRIDGES— SOFTBOXtm- A software library which can contain several ROM/EPROM programs. Plug in your computer and instantly call any program from your SOFTBOX — A full line of software and peripherals for the "colorful ZX SPECTRUM/TIMEX SINCLAIR 2000.

For more information, Free Brochure, and Special Package Discount, write or call:

IC INTERCOMPUTER INC.

P.O. Box 90, Prudential Center Boston, MA 02199 Tel: (617) 437-1190 Telex: 951141 COFAR

Phone Orders: 7 Days/w

Dealers and Distributors Inquiries Welcome

Mail to: Intercomputer, Inc., P.O. Box 90, Prudential Center, Boston, MA 02199

QTY.

UNIT U.S. $







Shipping and Handling q qr Printer y.yj
Shipping and Handling . Qr Memotech Products and QSAVE T.yQ
Mass. Residents Tax 5 % Total

□ Check □ Mastercard □ Visa

Account No. _

HOME MANAGEMENT

• BILL ORGANIZER Keeps track of bills, amounts due, date due, finance charges, payments made, etc. Sum¬ marizes all data for tax purposes. # HM5001 $14.95

► CHECK BOOK Balances and maintains your checkbook. Finds all checks written to one payee easily. Add a printer and it will even write checks for you.

# HM5002 $14.95

► ADDRESS BOOK Store, update and retrieve names, addresses, and phone numbers. With a printer attached, it will print mailing labels, sorts entries alphabetically by name, or by Zip Code. Only remember part of a name? It will find records from incomplete informa¬ tion. Code the entries for special purposes, i.e. Christmas Cards, Party Invitations, etc. # HM5003 $14.95

► OCCASION CALENDAR Keep track of birthdays, an¬ niversaries, meetings and special events. Have your calendar appear on the screen at the touch of a key.

# HM5004 $14.95 All programs use 16K RAM.

ENTERTAINMENT

► MISSILE LAUNCHER Challenge the enemy by destroying his ammunition stored in different locations.

# FG1002 $12.95

► KRAZY KONG A new version of the popular arcade game. This program has all the features of the original and is every bit as fast. # FG1013 $12.95

► GHOST HUNT Gobble your way through a maze of Ghosts, Power Pills, etc., etc., very fast. # FG1014 $12.95

] • MAZE DRAG RACE Drive through a giant maze 9 times the size of the screen, watch out for other cars, rocks, oil and ice. A really superb machine code game. # FG1015 $12.95

► DEMOLISHER Design an intelligent strategy to demolish a growing wall before it crushes you.

# FG1005 $12.95

► MCODER Compiles a BASIC program into machine code— Extremely simple to use— Write and debug your Basic programs— Enter the MCODER— the Basic pro¬ gram will be compiled into machine code as you watch. # PT4001 $18.95

► RETURN FROM SPACE # FG1001 $12.95

* JEOPARDY # FG1003 $12.95

► VEGAS # FG1004 $12.95 ►AIR ATTACK # FG1006 $12.95

► GUARD THE PRESIDENT # FG1007 $12.95 ►SUBMARINE # FG1011 $12.95

► COMBO PACK I Contains Return From Space and Missile Launcher # FG1008 $18.95

► COMBO PACK II Contains Vegas and Jeopardy

# FG1009 $18.95

► COMBO PACK III Contains Demolisher and Air Attack

# FG1010 $18.95

► COMBO PACK IV Contains Guard The President and Submarine # FG1012 $18.95

All programs use 16K RAM.

Limited warranty— Defective Software will be replaced if returned within 30 days.— Memotech Products: 180 days— Seikosha Printer: 90 days

LIFE EXPECTANCY — 8K/16K

This program calculates your life expectancy based on data you input on habits and family history.

Enter Life Expectancy as listed and RUN. Follow the directions on the screen. If you make a mistake, enter XX to restart. You'll get an error code followed by a line num¬ ber. Subtract 10 from the line number and GOTO the result to con¬ tinue with Life Expectancy.

Wilfried Eder, Fort Ashby, WV

By subtracting 10 and going back to the previous line number, you can continue instead of starting over in the middle of program execution. The method that allows this is an input after a prompt and increment¬ ing in your program by 10.--Ed.

1 REM "LIFE EXPECTANCY CALCUL

ATOR"

10 PRINT "LIFE EXPECTANCY CALC UL AT ION FOR ADULTS 20 TO 65 YRS , OF AGE"

20 PRINT

-30 PRINT "TYPE" " 1" "FOR YES, ""2 " "FOR NO, TO ANSWER QUESTIONS

4.0 LET A =72 46 PRINT

50 PRINT "ARE YOU MALE'?"

60 INPUT B

70 IF B=1 THEN LET A=A-3 S0 IF B=2 THEN LET A=A+4 82 CLS

64 PRINT "1=YES" , "2=NO"

66 PRINT

9© PRINT "DO YOU LIUE IN AN UR BAN AREA (POPULATION >2 MILLI

ONJ ?"

100 INPUT B

110 IF B = 1 THEN LET A=A-2

111 IF B = 1 THEN GOTO 141

112 CLS

114 PRINT " i=YES" , "2=NO"

116 PRINT

120 IF 5=2 THEN PRINT "DO YOU L IUE IN A TOWN (POPULATION <10, 000 >

-■>**

130 INPUT B

140 IF 6=1 THEN LET A=A+2 142 CLS 144 PRINT

150 PRINT "IF YOU WORK BEHIND A DESK, TYPE “ "1" " j IF YOUR JOB RE QUIRES REGULARHEAUY PHYSICAL LAB OR, TYPE" "2"" . "

160 INPUT B

170 IF B=1 THEN LET A=A-3 180 IF B =2 THEN LET A=A+3 182 CLS 184 PRINT

190 PRINT "IF YOU EXERCISE STRE

NOUSLY MORE THAN 5 1/2 HR,SESSI© NS/UK .TYPE ""2"".; IF YOU DO 2-3 ^TIMES/WK.TYPE""!""; IF NOT AT AL

20© INPUT B

210 IF B=2 THEN LET A=A+4 220 IF B=1 THEN LET A=A+2 230 IF B=0 THEN LET A=A 232 CLS 234 PRINT

240 PRINT "TYPE" "l"" IF YOU LIUE WITH A SPOUSE OR FRIEND. IE NOT, TYPE" "2"" . "

250 INPUT B

26© IF B = 1 THEN LET A=A+5 262 CLS 264 PRINT

270 PRINT "IF YOU LIUE ALONE, TV PE NUMBER OF DECADES YOU HAU

2"'ClVED' Urr'riQuT 'Oi HERS axNCc 'YOU REACHED AGE25 . OTHERWISE TYPE""0

280 INPUT B 290 LET A=A— B 292 CLS

294 PRINT "1=YES" , **2=NO"

296 PRINT

300 PRINT "DO YOU SLEEP MORE TH AN 10 HOURS A NIGHT?"

310 INPUT B

320 IF B=1 THEN LET A=A-4 322 CLS

324 PRINT 330 PRINT GRESSIUE, ”1"" . "

332 PRINT 340 PRINT

■IF YOU ARE INTENSE, A EASILY ANGERED, TYPE"

IF YOU ARE EASY GOIN

G, RELAXED, A ""FOLLOWER"" , TYPE" ”2 350 INPUT B

3S0 IF B = 1 THEN LET A=A-3 370 IF B=2 THEN LET A=R+3 372 CLS 374 PRINT

380 PRINT "IF YOU ARE HAPPY , TYP E”"1"";IF NOT TYPE" "2""."

390 INPUT B

400 IF 6 = 1 THEN LET A=A + 1 410 IF B=2 THEN LET A=A-2 412 CLS

414 PRINT ” 1=YES" , "2=NO"

416 PRINT

420 PRINT “DID YOU HAUE A SPEED ING TICKET WITHIN THE LAST YEA

R?"

430 INPUT B

440 IF B=1 THEN LET A=A-1 442 CLS

444 PRINT "1=YES* , "2=NO"

446 PRINT

450 PRINT "DO YOU EARN MOKE THA N 50,000/YR?”

460 INPUT B

470 IF B=1 THEN LET A=A-2 472 CLS ‘W*. HKJ.NI

”..IF YOU FINISHED COLL E6E..TYPE ! ; IF GRADUATE SCHOOL

,TYPE""2**"; IF NEITHER, TYPE'”'©

490 INPUT B 500 LET A=A+B 512 CLS 514 PRINT

S20PRXNT "IF YOU ARE 65 OR OUE R AND STILL WORKING , TYPE"" 1"": OT HERWISE TYPE ""2""C"

14

530 INPUT 8

540 IF B=1 THEN LET 0=0+3 542 CLS 544. PRINT

INT "IF RNY OF YOUR GROND PRRFNIS LIUED TO BE 85 OR

OUER^TYPE'* **£" " XP &L.L 4- LXUfED TO BEe800OR OUER TYPE""6*",IF NOT T

560 INPUT B 570 LET 0=0+8 572 CLS

574- PRINT ** 1 =YES " , "2 =NO "

576 PRINT

^gSOPRINT "DID EITHER OF YOUR P ORENTS DTE OF STROKE/HEORT OTT OCK BEFORE OGE 507”

500 INPUT B

f gg IF B = 1 THEN LET 0=0-4.

602 CLS

ISf SSItil ** 1 =YES" , "2=NO"

606 PRINT

610 PRINT "HOUE ONY OF YOUR POR ENTS OR BROTHERS /SISTERS UN

DER OGE 50 HOD O HEORT CONDITI ON , CONCER OR CHILDHOOD DIOBETES7

620 INPUT B

630 IF B=1 THEN LET 0=0-3 632 CLS 634. PRINT

t®40 PRINT "IF YOU SMOKE CIGORET IF MORE THOM 2 PRC K.6 /DRY.; TYPE” "6" "IF 1-2 PflCKS/DfiV }. TYPE" "3" " IF 1/2 — 1 POCK/ DOY . TYPE ” "0" ” IF YOU DO NOT SMOKE."

65© INPUT B 660 LET 0=0 -B 662 CLS

664- PRINT "1=YES", "2=NO"

666 PRINT

^ 7 ©PRINT "DO YOU DRINK THE EOU IUOLENT OF 1/4 BOTTLE LIQUOR O DRY?"'

680 INPUT B

690 IF B=1 THEN LET 0=0-1 692 CLS 694 PRINT

700 PRINT "IF YOU ORE OUERUEIGH T,TYPE""8""IF BY >50 LBS. TYPE" "4 IF BY 30 TO 50 LBS .TYPE" "2” " IF ,,BY 10 TO 3© LBS. OTHERWISE TYPE © .

710 INPUT B 72© LET 0=0 -B 722 CLS 724 PRINT

730 PRINT "IF YOU ORE MOLE OND HOUE ON ANNUAL CHECK-UP OR

^FYOURRE FEMOLE OND SEE O GY

NECOLOG 1ST ANNUALLY . TYPE " "2" " , O THERUISE TYPE 740 INPUT B 75© LET 0=0 +B 752 CLS 754 PRINT

76© PRINT "TYPE" “2" "IF YOU ORE BETWEEN 30-40; IF BETWEEN 40

-5©.; ""4"" BETWEEN 50-60.; ** " 5” " IF >70"

770 INPUT B 780 LET 0=0+6 782 CLS 784 PRINT

790 PRINT "YOUR LIFE EXPECTANCY’ IS : ".; O; " YEORS"

80© STOP

SYNTACTIC SUM: 57181, 8K ROM

PROGRAM IMPROVEMENTS/REFINEMENTS

Running Syntactic Sum with Var¬ iables (SQ Winter '82) in slow wipes out the program you are checking.

To prevent this, add a FAST call to the Syntactic Sum program. First, lower RAMTOP with: POKE 16388,200

POKE 16389,127 NEW

Change Syntactic Sum Program to:

1 FOR L =32717 TO 32766

2 POKE L , P (L-32716J

3 NEXT L

4 LET L =327 14

5 POKE L, 205

6 LET L=L+1

7 POKE L, 35

8 LET L =L +1

9 POKE L, 15

1© REM THE REST OF THE PROGRAM IS MUCH THE SOME.

14 PRINT " SYNTACTIC SUM WITH U ORIOBLES IS NOW SAFELY TUCKED RW OY OBOUE RAMTOP"

_ 15 PRINT , , " TO OBTAIN O SYNTfi

LTIC SUM, ENTER "“PRINT USR 3271

17 STOP

18 SPUE "SUM"

19 GOTO 1

SYNTACTIC SUM: 19091, 8K ROM

Patrick O'Connor, Manitoba, Canada

HEAR THE POWER OF YOUR TIMEX/SINCLAIRtm

IT'S BEEN SAID THE FUTURE BELONGS TO THOSE WHO UNDERSTAND COM- ThVmTALK TTOYoJRUE' WHAT BETTER WAY 70 00 THIS THAN BY HAVING

NOW YOU CAN. QUICKLY , SIMPLY, ECONOMICALLY.

wrrct

HEAR THE POWER

far ref

FEATURES:

• PROGRAMMABLE SPEECH AND SOUND EFFECTS.

• AMPLIFIER AND VOLUME CONTROL.

• "PIGGY BACK” EXPANDABILITY.

• SPEAKER OUTPUT JACK.

• POWER INPUT JACK FOR EXPANDED SYSTEM OPERATION.

• PROFESSIONALLY WRITTEN SOFT WARE EXAMPLES INCLUDED ON CASSETTE TAPE.

• COMPLETE DETAILED INSTRUCTIONS ARE PROVIDED BEING BOTH EDUCA¬ TIONAL AND INFORMATIVE.

• COMPACT, RELIABLE AND SAFE.

• ALL FOR $89.95

LET THE POWER OF YOUR SINCLAIR ZX80/81 TM OR TIMEX SINCLAIR 1000 TM SPEAK FOR YOU NOW. THROUGH R.I.S.T. COMPUTER COMPONENTS INC THE PARROT TM - YOUR ZX80/81 OR TS1000 CAN SPEAK.. .CLEARLY, CONSISELY AND WITHOUT LIMIT.

R.I.S.T. HAS DEVELOPED A STATE OF THE ART VOICE SYNTHESIS MODULE YOU PLUG IN. THE PARROT TM UTILIZES ALLOPHONE CONCATENATION TO SYNTHESIZE SPEECH, WITH LIMITLESS VOCABULARY. SENTENCES, AND ANY ENGLISH LANGUAGE WORD CAN BE CREATED.

BEST OF ALL, THE PARROT TM IS AFFORDABLE. FOR $89.95, YOUR ZX80/81 OR TSWOO_CAN GIVEJOU THE VOICE OF THE FUTURE. . . TOD A Y!

SEND $89.95 PLUS $4.00 SH/HD TO:

RIST INC. »P.O. BOX 499 • FT. HAMILTON STATION, BROOKLYN, N.Y. 11209 N.Y. STATE RESIDENTS ADD 8.25% TAX ($7.40), CANADIAN ORDERS SEND TO- INTEGRATED DATA SYSTEMS • 11 BRIGHTON AVE. • TORONTO CANADA M4M 1P3 MY COMPUTER IS: □ ZX80 □ ZX81 DTS1000

□ 9V,2 Amp POWER SUPPLY (OPTIONAL) $24.95 ea. (REQUIRED FOR ZX80 OR EX¬ PANDED SYSTEM OPERATION)

FOR ORDERS OUTSIDE U.S. & CANADA PLEASE SEND CHECK PAYABLE IN U S DOLLARS

15

GREEN AND BLACK AND READ ALL OVER

My nine-inch black and white low-res monitor smears characters because of its poor resolution.

Then I saw an ad for a 9x4 1/2" green and black monitor for $75 from John Meshna in Lynn, MA. Looking at the specs and schematic convinced me this high-res monitor provides enough gain to connect to a ZX/TS with no interface.

1 find the screen presentation a major improvement. Still, after adjusting it, my 9" monitor shows squares as rectangles — not a prob¬ lem for text, but graphics are too wide. At maximum height and mini¬ mum width you'll get 60x85mm "squares" using X=40:

2 INPUT X

5 FOR U = 1 TO X 10 FOR 1=1 TO X 2® PLOT T,xJ 30 NEXT I 4-0 NEXT U

SYNTACTIC SUM: 3837, SK ROM

All you need is a monitor and a

TIMEX 1000 $59.95 *

BUISiTESS

Budgeting ••••••«•	... 59.95
Inventory Control	... 59.05
Financial Analyzer	.. 39.95
GAMES
Leap Frog . .	.. 59.95
Star Voyage .	.. 39.95
Fungaloids . .	.. 39.95

Chess ............
Snakebite . .	• • V7*/7 • • Cq q r
Packman .	•• 39.95
UTILITY
Assembler +	....$9.95
Compiler ••*••••••	....$9.95
Graph . * .	....$9.95
Q— Save •••...call	for price

AND MANY MORE EXCITING PROGRAMS 1

♦You Tiave to buy 3 software from us*

CALL FOR FREE CATALOG

DISCOUNT SOFTWARE, INC.

320 E. 59th St. NY, NY 10022 Tel: (21 2)436-0980

length of coax with a BNC connector on one end. At the other end, bare about 1/4" of the center wire and make a l/2"-long pigtail of shield.

Remove the 5 screws from the bottom cover of your computer (look under the rubber feet). Remove the bottom cover and the two screws from the board. Remove top cover from board. You'll see a small metal box (modulator) on the compo¬ nent side of the board with three wire leads to the board.

Solder the coax center lead to the wire lead closest to the board edge. Solder the pigtail to the lower edge of the metal box.

With a knife, cut the top cover of the computer so the coax cable can pass through. Reassemble your ZX/TS computer.

For 9" monitor only, (12" model works as-is) remove the cover and find the control names etched along the circuit board edge. With a screwdriver fully rotate three con¬ trols: gain, counter-clockwise;

height, clockwise; ABC, clockwise. Using a plastic hex-head alignment tool, set the width to minimum. Do not adjust the other controls. Put the metal cover back on.

Connect the leads and go green.

Leo Morgan, Peabody, MA

We tried 2 Meshna monitors, the 9" No. SPL-310-24 and the 12" MOT-12 (Motorola No. J12VP102-Z07) . $75

each from John Meshna, Jr., Inc., POB 62, Lynn, MA 01904. Call Doug at 617/595-2275. You'll need a Belden 17504 line cord for the 9" monitor. Disregard the letter about reverse video — you'll get black letters on green. Use the 12"-type for normal perspective.

Both surplus monitors use 75- Ohm input resistors, but the ZX/TS drives them. Our Zenith ZVM-121 monitor also runs with this video connection if set at max. contrast and black level. Some computers may drive the modulator and monitor simultaneously — ours won't. — KO

16

Creations Inc. — d/b/a Computer Discount Services

accounts

Ybur own PERSONAL OR SMALL BUSINESS ac¬ counting system. Contains refinements not usually found in this type of program. ‘200 Transaction file” can be SEARCHED, PRINTED or DISPLAYED. This program has been throughly tested, and improved through extensive use.

ORDER No. 03-1022

AUTOFILE

An ELECTRONIC FILING SYSTEM that can be used for ANY type of data. Set up your own DATA-BASES with this easy to use, menu-driven program with AUTO-SEARCH facility.

ORDER No. 03-1021

BREAKOUT

Fast MACHINE CODE arcade-type game. If you havenl tried THIS version, you haven’t played ‘BREAKOUT on the ZX81/TS1000.

ORDER No. 03-4028

Enables you to play any tune through your T.V. speaker, your cassette recorder or through an A.M. radio. With ‘COMPOSER’ you can control the dura¬ tion of each note. And you can save your song on

ORDER No. 03-3012 11995

G R A FIX

Draw and store complex images. Permits you to create, mix, and save your own screen artwork. Ybu can mix graphics created with GRAFIX into another program. By itself or on tape. This program is a “must” for the CREATIVE PROGRAMMER.* 4 jqc ORDER No. 03-6005 * 1495

'M’-Coder™

Now you can write MACHINE CODE PROGRAMS on your ZX81 with ’M’-Coder. The first true MACHINE CODE COMPILER for the ZX81 Computer. Simply write your new program in BASIC, (or load an — -=EXISTING PROGRAM), press A-KEY and ‘M’-Coder will automatically compile it into MACHINE CODE for you. ‘M’-Coder codes 99.9% of all BASIC. Give all your programs that SUPER-FAST professional look. Order 'M’-Coder NOW to revolu¬ tionize your programming. Once you try ‘M’-Coder you’ll never write basic programs again! t ^n95 ORDER No. 03-5201 *1™

PUCKMAN

Superb fast moving MACHINE-CODE fun. Have an exciting time playing this EXCELLENT version of the popular arcade game. *4 woe

ORDER No. 03-4027 $l49a

TOUCH-A-MATIC’1

$995

/ \
QSave		SINCLAIR
TM
\ /		- —1

POWER AT YOUR FINGER TIPS!

ORDER No. 01-0007

KOPAICS “TOUCH-A-MATIC" gives you the power to type more accurately and faster. It requires NO WIRES, NO SOLDERING. It’s as easy as removing the adhesive backing and pressing it into position.

LOADS & SAVES 16 K file in 26 seconds instead of 7 minutes! Cleans up signal for a cleaner load.

• STRONGER, SHARPER DIGITAL SIGNAL

• CLEANER, FILTERED POWER • ENCODES YOUR PROGRAM AND/OR DATE • Save time/Save 1

• Baud rate increases from 250 to over <

must for all ZX81 /TS1000 owners. TM » onnc ORDER No. 04-1000 SoSJ95


NAME	Sub-lbtal	s
ADDRESS	Add tales tax	$
CITY STATE ZIP	Packing ft Shipping (See Chart)	$
f 1 r°m $25.00 to $29.99 add $3.45 to $9.99 to $14.99 add $2.00 from $30.00 to $39.99 add $3.70 P * ,rom 515.00 to $1 9.99 add $2.50 from $40.00 to $49.99 add $3.95 V* from $20.00 to $24.99 add $2.85 over $50.00 add $4.25	Total amount enclosed or to be charged to my credit card	$

CHARGE

visa| 1

MASTER I — I

□

INTERBANK NO

EXR DATE

MASTER I— I | _ | | _ | _ 1 I I

CARD 1 — 1£!22 - MO YEAR

MELBOURNE HOUSE SOFTWARE Cm v

18

BLIPPO

WITHOUT SPEAKER

$24.95

WITH SPEAKER

EXPANSION

CONNECTOR

ZEBRA LIGHT PEN

• Fun to experiment in BASIC

• Complete package includes: -Light Pen

-Computer Intertace Module -Demo Program Listings

• Assembled & Tested

ORDER C109 $24.95

Add amazing sound effects to your games. Easy to program in BASIC.

Wide frequency range.

Assembled and tested, with Demo software.

AMAZING SOUND EFFECTS

SPEAKER

MODULE

SUPER GAMES 033 »

mmm

mmu\m

PROTOTYPING?

EXPERIMENTING?

C111

UNIVERSAL PATTERN FOR IC’S, CAPS, ETC.

MONSTER QQ MAZE | I-

CH3 ft

S14.95 II “

Cm BYTING DEEPER INTO YOUR TS1000 . C103 NOT JUST 30 PROGRAMS FOR THE ZX81 C104 COMPLETE T/S BASIC COURSE .

Cl 12

PIGGY BACK RAM OR OTHER PERIPHERALS

C110

ALL SIGNALS LABELED

GOBBLE

MAN

Cl 1 4

$14.95

C110 Keyed & Labeled ZX Connector $5.95 C111 Universal Prototyping Board . . $9.95 Cl 1 2 Expansion Connector . $2.50

Cl 05 UNDERSTANDING YOUR ZX81 ROM ... . C106 MACHINE LANGUAGE MADE SIMPLE . . . C107 THE INS & OUTS OF THE TS1000 & ZX81

IMPORTANT! All ZEBRA products can be piggybacked in any order. Your memory, printer, etc. will plug into the last one.

Tech info & ny state call Order Toll Free (212) 296-2385 9-5 EST 800-221-0916

15 DAY MONEY BACK GUARANTEE ON ALL ZEBRA HARDWARE.

ADD $2.00 PER ORDER FOR SHIPPING.

WE ACCEPT VISA, MASTERCARD, CHECKS, M.O.

C.O.D. ADD $3.00 EXTRA.

NY RESIDENTS ADD SALES TAX. OVERSEAS, FPO, APO, ADD 10% DEALER DISCOUNTS AVAILABLE.

ZEBRA SYSTEMS, INC

78-06 Jamaica Avenue, Woodhaven, New York 11421

OFFICE MANAGER — 8K/16K

F=Finish print line D=Data input (search mode)

Office Manager creates and stores three separate files: a phone directory, report file (each 150 lines max.)/ and memo file (20 lines max.).

You can move freely from one file to another without reloading from tape or disturbing data in any file. To switch files, type END, ENTER, and the menu reappears. Select the new mode and ENTER.

When using the report or memo option, you can only enter one line at a time. Type in each line and ENTER after each one.

Enter phone numbers last name first. You can search for entries by last name or initial. Report and memo options cannot search.

If you get an error 5/(line number) when viewing files, the screen is full. Hit CONT to go on. GOTO 5 returns you to main menu.

You can save file information on tape or print it out.

Print option asks which lines you want to print. If you want to print only a portion of a file, find the starting and ending line numbers by selecting display op¬ tions 3, 6 or 9 (depending on the file). The screen displays the start and end slots of each file. Each line of your file occupies 1 slot. Calculate your start and end line slots. Enter these numbers when you return to print option — your ZX/TS prints just those lines.

First time you load the program dimension the files by entering:

DIM F$(321,31) then, enter GOTO 1.

Inverse graphics are:

20 space Office space Manager 7 spaces T/S space 1000 space 2403 11 graphic sevens 2709 18 graphic sevens 2720 space File space Slot 2 spaces Variables

F$=File string array C=Menu choice Z$=Any input or choice L=Line counter; subscript S=Start print line

Joe Glass, Cinnaminson, NJ

1 REM OFFICE MANAGER USES AN ARRAY (F*i 321 BY 31. THIS MUST BE ENTERED BY DIRECT COMMAND.

5 FAST 18 CLS IS PRINT

25 PRINT

30 PRINT TAB 5; "1 OPEN PHONE B

OQK"

35 PRINT TAB 5; "2 SEARCH PHONE BOOK”

4-0 PRINT TAB 5; ”3 ALTER PHONE

BOOK"

4-5 PRINT

30 PRINT TAB 5;. "4- OPEN REPORT

FILE"

55 PRINT TAB 5; “5 UIEU REPORT FILE"

60 PRINT TAB 5; ”6 ADD TO REPOR

T “

55 PRINT

70 PRINT TAB 5; "7 OPEN MEMO FI

LE"

75 PRINT TAB 5; "8 UIEU MEMO ®I

S3 PRINT TAB 5; ”9 RLTER MEMO F

XL.E"

©5 PRINT

90 PRINT TAB 4-; "10 PRINT FILE*' 95 PRINT TAB 4.; "11 SPUE ALL FI LES" TAB 4.; *'12 UIEU ALL FILES" 100 PRINT RT 21,0J "ENTER CHOICE

105 INPUT C

110 IF C<1 OR 012 THEN GOTO 10

0

15© GOSUB 2©0©

150 IF C = 1 OR C =3 THEN GOSUB 21

©0

155 IF C=4- OR C=5 OR C=6 THEN G OSUB 2200

170 IF C =7 OR C =8 OR C=9 THEN G OSUB 2300

175 IF C = 10 THEN GOTO 24-00 180 IF C=ll THEN GOTO 2500 185 IF C=2 THEN GOTO 2700

190 IF C =3 OR C =6 OR C=9 THEN G OTO 2800

195 PRINT "TYPE ""END"“ TO EXIT

280 IF C = 1 OR C =4 OR C=7 THEN I NPUT F$(L)

205 IF F$CL,1 TO 3) ="END" THEN GOTO 2600 210 PRINT FJ CL)

215 LET L=L + 1

220 IF C=1 AND L>150 QR C=3 AND L > 150 THEN GOTO 2600 225 IF C =4- AND L >300 OR C=S AND L >300 OR C=6 AND L>300 THEN GOT O 2600

230 IF C =7 AND L >320 OR C=S AND L >320 OR 0=9 AND L>320 THEN GOT O 2600 235 GOTO 200 250 STOP

300 REM SUBROUTES FOLLOU 2800 CLS 2005 PRINT

20

£010 RETURN 2100 LET L = 1 2105 RETURN 2200 LET L=1F1 2205 RETURN 2300 LET L =30 1 2305 RETURN

2400 GOSUB 2000

2401 PRINT " PARAMETERS : *'

2402 PRINT

2403 PRINT ” PHONE = 1 TO ISO" ; TAB 0; "REPORT = 151 TO 300” ; TAB 0;”M

EMO= 301 TC 320"

2404 PRINT

2405 PRINT "STARTING LINE?"

2410 INPUT S

2415 PRINT "FINISH LINE?"

2420 INPUT F

2435 LPRINT F$<L,1 TO 31)

2440 LET L=L+1

2443 IF L=F THEN GOTO 2600

2445 GOTO 2435

2505 PRINT "ALL FILES WILL BE SR UED IN THE STANDARD SINCLAIR FO RMAT . "

SB 10 PRINT

SB 15 PRINT "SIMPLY PRESS ENTER • *

£5X6 INPUT Z$

£518 S RUE -FILES**

£52© GOTO 1

261© GOTO 1©

271© INPUT Z$

2711 LET D=LEN Z$

2715 LET L = 1

2725 LET L=L+1

2735 GOTO 272©

2820 PRINT “FILE ENDS RT SLOT: 11 ; L

2825 PRINT -ENTER DRTR--END TO E

xrr-

2830 INPUT F$(L)

2835 IF F$ (L » 1 TO 3) =,iENDi* THEN

GOTO 2600

284.0 PRINT F$TL>

284.5 LET L=L + 1

10

2360 IF C=9 AND L>320 THEN GOTO

X©

2910 PRINT F$ (L)

2915 NEXT L 3920 GOTO 2600

CLASSIFIED ADS

Reach almost 10,000 ZX/TS users for just $9/line in SYNTAX classified ads. Send your copy, typed 35 char. /line (exactly as you want it to appear) with a check, (NO CREDIT CARDS OR PHONE ORDERS, please) to ar r ive by the 15th of any month.

You ad will appear in the next month's issue. To repeat an ad, send another ad order with check by the 15th. We take no responsi¬ bility for advertisers. Include phone number whether or not the number appears in ad copy. SYNTAX Classified Ads, RD2 , Box 457, Harvard, MA 01451.

*

* FREE NEWSLETTER 8 pages ******* Send SASE to Friendly, Box

* 122, Wallingford, PA 19086

*

******T IMEBLASTER s****** A 1.7K M/L ARCADE GAME FOR SERIOUS Players. For ZX81/TS1000 (16K RAM) Send $12.95 To: CALLIOPE SOFTWARE. 4130 Coe Dr NE , Albuq. , NM 87110

BRONZE STAR SOFTWARE ANNOUNCES: ZT Can you help the little creature to find his way home, a different game every time. Tape $7 16K required

PO BOX 265, Chicago Ridge, IL 60415

$3.50 PPD BUDGET/FINANCE SOFTWARE PRGM LISTING with line for line explanation. Educational, useful

application prgm for beginner, continues where ZX81/TS1000 manual leaves off. 8K/16K RAM. GROMBACHER 4564 QUEENS WAY, SIERRA VISTA AZ. 85635

ELECTRONIC SPREADSHEET with PLOTTER 12.95 ! ISASE gets ca t. & ! ! FREE ! ! g if t ! EZRA/EZRA, Bx 5222 , SanDiego CA 92105

Programs in BASIC to USE-EXPERIMENT WITH-LEARN HOW IT IS DONE-MODI FY TO SUIT YOUR SPECIAL NEEDS. D LIPINSKI SOFTWARE ,2737 Susquehanna Rd,Roslyn PA 19001 INFO FREE Dealers Welcome.

21

INTEGER BASIC COMPILER. 16K RAM-$12 Info? Write To: ZX81 Programs, 106B ANTOINETTE CT., CH'VILLE, VA 22933.

DRIVE A VIDEO MONITOR WITH YOUR ZX- 81. Our DVC-2 kit provides direct video and REVERSE VIDEO. Kit $20.45, assembled $31. 45. Get super sharp character definition with our 12" B&W video monitor ,$98. 45. Random Access, Box 41770S , Phoenix, AZ 85080

******** jh_2 LEDGER SYSTEM ******** ONE PROGRAM THAT LETS YOU STORE, Graph And Recall All Your Bookkeep¬ ing Data. Will Store 300 Entries Across 20 Columns. Instructions Included. 16K Required. Send $21.95 For Cassette To: M-Z SYSTEMS 1003 S. CLIFF, PORTLAND, TX 78374.

** UNLOCK SELF-STARTING PROGRAMS ** Allows LIST, SAVE, mods. 8ROM-16RAM Life-Guar. $13.95 ppd. N.J. Gipson, 43 Imperial RD#6, Coates, PA 19320

MARBLES . MAZES AND SINK HOLES A simple, non-destructive game of skill and logic for all members of the family. 15 levels of play, from very easy to extremely difficult, each with 4 different screen types giving 60 full-screen displays. Score displayed as time taken; auto clock enforces time limit; auto run and return to basic features. 100% machine code program for ZX81 or TS1000 with 16k RAM. Cassette $10 CHARLES DRURY, 40 WESTGATE RD #5. CHESTNUT HILL , MA 02167

* * 16K RAM PACK GOT YOU DOWN? * * Loading And Saving Noise Completely Eliminated. Send Your Working RAM Pack With $9.95 To: DAVE FREY, 619 AVIGNON DR., MELBOURNE, FL 32935

** CHARACTER SET GRAPHICS KIT ** Visually spaced, large format let¬ ters, numerals & punctuation. A fast, easy to use system that gives professional look to display.

SASE and check for $3.00 to:

Vidiom, Dept. 'T, PO Box 3118 Wayland Sq. , Providence, RI, 02906

//2K Programs from 2-BIT SOFTWARE// //4 Adventure Games $9.95. Free// //color catalog. Emerson & Stern// //Dept. SY3, Box 2036, Del Mar,// //CA 92014 (619) 481-3629 Orders//

*The "GETITALLTOGETHER" Clip $3.95* Better 16K/ZX81 integrity, Less Lost *" ITS" Rt.6 BOX765 Norman, Ok 73071*

!!!!! ZX81 - TS/1000 SOFTWARE !!!!! ENTERTAINMENT - EDUCATION GAMES - TEXT ADVENTURES - BOOKS Send for Catalog & FREE game Software Unlimited PO Box 147 Grandview, MO 64030

LEARN DATA HANDLING TECHNIQUES with ZX Data Finder, a versatile file manager for 16K ZX81s. All routines thoroughly explained. Concepts and dozens of memory saving methods are analyzed. List/text $9.95-free info Tom Woods Box 64 Jefferson, NH 03583

***** METAGRAPHICS ***** USE THE FULL GRAPHICS POTENTIAL OF Your ZX81/TS1000 (16K RAM). 2048 CHARACTERS! 1 BASIC + M/C Gives You Total Artistic Control. Send $12.95 ******** CALLIOPE SOFTWARE ******** 4130 COE DR. NE, ALBUQ. , NM 87110

*** STOCK MARKET CASSETTE (16K) *** PORTFOLIO MANAGEMENT: MAINTAINS Records Of Securities You've Bought And Sold. Analysis Provides 12 Dif¬ ferent Listings (Gains, Loss, Dates, Yields, Etc.) Holds 100+ Securities Side 2-Program For Market Forecast. $9.95 To TELETEK CO; #15 CENTRAL WY SUITE 169; KIRKLAND, WA, 98033

** ADD MEMORY THAT WON'T FORGET! **

* Read the review in SQ(Winter) *

* Kit $31:90 SASE details: HUNTER * *1630 Forest Hills Okemos MI 48864* *Read RADIO-ELECTRONICS June/Julv*

$$$ DON'T Buy This Software !!! -Unless you want the BEST deal for 16K '81s!! 6PAC has: FORTH, BUDGET, SPREADSHEET, INVENTORY, FILE,& TIME PLAN programs. SALE PRICE $27.95!!! SofTek, Box 4232 Santa Fe, NM 87502

22

COMPUSETTE is a C-10 cassette which is especially designed for micro¬ computer application by TAPEMASTERS 25 for $20.00 100 for $70.00

COMPUSETTE+ is a C— 20 cassette 25 for $22.00 100 for $77.00

VISA MASTERCARD C.O.D.

TX 214-349-0081**OTHER 800-527-1227 10% discount for Check with Order P. 0. Box 38651*Dallasf Texas 75238 FREIGHT PREPAID *DEFECTIVES REPLACED

OUR POLICY ON CONTRIBUTED MATERIAL

SYNTAX invites you to express opinions related to any Sinclair computer or peripheral, or the newsletter. We will print, as space allows, letters discussing items of general interest. Of course, we reserve the right to edit letters to a suitable length and to refuse publication of any material.

We welcome program listings for all levels of expertise and written in either Sinclair BASIC or Z80 machine code. Programs can be for any fun or useful purpose. We will test run each one before publishing it, but we will not debug programs; please send only workable listings. Programs submitted on cassette can be tested more quickly and with less chance of error.

In return for your listing, we will pay you a token fee of $2.00 per program we use. This payment gives us the nonexclusive right to use that program in any form world-wide. This means you can still use it, sell it, or give it away, and so can we. ’

We will consider submissions of news and hardware or software reviews. Please keep articles short (350-400 words). Again, we reserve the right to edit accepted articles to a suitable length. We will pay 7 cents per 6 characters, including spaces and punctuation, for accepted articles.

When you send in programs for possible publication in SYNTAX, please include the following information:

• How to operate the program, including what to input if it does not contain prompts.

• Whether you can run the program over again and how.

• How to exit the program.

• The Syntactic Sum (program published in Feb. 81 and Jun. 81; send SASE for a free copy).

• What RAM size program requires.

• What ROM program uses.

We pay for this explanatory text at the same rate as for articles in addition to payment for the program itself.

If you want us to return your original program listing or article, please include a self-addressed, stamped envelope. Otherwise, we cannot return submitted material.

Eliza for 16K Timex/Sinclair.

From MIT, the celebrated Simulation of Machine Inteligence. Cassette only $14.95. Sinclair Softech P.O. Box 82A, Sinclair Wy 82334.

***f or TIMEX/SINCLAIR computers*** NEW! "IN-LINE LOAD MONITOR"; Load software like a pro! Guaranteed.

Compact. Detailed instruct. - 12.95

LOST IN SPACE - 11.95

UNIVERSAL INVENTORY FILE - 16.95

UNIVERSAL MAILING LIST - 10.95

UNIVERSAL COIN COLLECTION - 10.95

UNIVERSAL STAMP COLLECTION - 10.95

UNIVERSAL RECORD ALBUM COLL - 10.95

Each program on cassette + manual. 8KROM, 16KRAM. $1.50 S&H perorder. $1 for cat. (Refunded with order.) N.J. 6% tax. WANTED :Retailers, Agent and Dealers. M.C. HOFFMAN CO., DEPT. SX4 , PO BOX 117, OAKLAND NJ 07436

THE SERIOUS SINCLAIR. LEARN REAL Power of ZX Computing. Full Line Upgrades/Instructions. Catalogue- $5 Applied on Purchase. NEW WORLD CONCEPTS Box 587 Ogden, Utah 84402

///NEW ZXS1/TS1000 TEXT EDITOR! ! /// /$2.95 For Listing, $5.95 On Tape/ Catalog $1-Refunded W/Order.To; BOB

LUCAS/401 N GEYER/KIRKWOOD/MO/53122

SYNTAX is published

monthly by a wholly-owned subsidiary of The Harvard Group.

Syntax ZX80, Inc.

RD 2, Box 457, Harvard, MA 01451.

Telephone 617/456-3661.

12 issues, $29. Single issue, $4.

YES! Please send me 12 issues of SYNTAX for $29. 4/83

□ My check for $29 is enclosed. □ Please charge my □ MasterCard Make checks payable to: □ Diner’s Club □ American Express

SYNTAX ZX80, INC. □ VISA D Carte Blanche account

account number _

exp. date_

bank number (MC only)

Publisher: Kirtland H. Olson Editor: Ann L. Zevnik Assistant Editor: Pamela Petrakos- Wilson

Editorial Assistant: Pamela K. Vinal

signature _ _

Name _ Title _

Organization _ _ _ _ _

Address _ . _ _

City - - - State _ Zip

Day Phone/ - } _ _ Evening Phone ( )

1 own a EH Sinclair ZX80 EH Sinclair ZX81 Telephone orders call

□ TS1000

617-456-3661

23

SYNTAX

ARE YOU FOR SALE?

Cash or royalty terms for software we feel is marketable. We'll treat you right! Send YOUR requirements, program + documentation to ROBOTEC, Inc. 251 1st St. Perrysburg ,0H 43551

*************WATCH out************* Great new arcade type game-16K Keep the ball going, but watch out for the Bird. High score List $3.00 Tape $5.00: SeySoft 304 Exler Road Vine Gronve, Ky. 40175.

*WANT YOUR DISPLAY WHITE ON BLACK?* Parts less than $5.00. ZX81/TS1000.

For plans, send $5.00 to J&J Assoc. Rt. 4, Box 431, Mobile, AL 36609.

2 Sample programs on cassette $2.00 Plus SASE. Programs,

3763 W. Crocus Dr. Phx, AZ 85023

SINCLAIR/TIMEX INERFACING TO ANALOG and DIGITAL Devices. J.V. Kane And Co. 109 Ardmore Avenue, ARDMORE PA 19003. 215-649-1782

TRENDSETTER (ZX-81 TS) : Uses least squares method for many trends to data. Includes 3 point method for Logistic & Gompertz growth curvdfe. $15 check or M.O. for cassette and FULL instructions: John Anunti, 3309-20th St., S.F., CA 94110

-New from SIRIUSWARE- Make back-up copies of any std-f ormat Sinclair- Timex tape - even unSAVEable tapes. COPY* prog, on cass. tape - $10 ppd Send SASE for catalog. SIRIUSWARE 6 Turning Mill Lexington, MA 02173

* * * *MEMOTECH ADD ONS*NEW PRICES****

Memopak 16K Memory - $46.95

Memopak 32K Memory - $88.95

Memopak 64K Memory - $144.95

Memopak CPI Print Inter face-$74 . 95

Memopak CPI-C Cable - $18.95

Memopak HRG Hi Res. Graphics$89.95 Prices include shipping.

Mass, residents add 5% Sales Tax Pay by Personal Check, MC,or VISA # Ask for new Software-Book Catalog Atlantic Northeast Marketing, Inc. P.0. Box 921 Telephone:

Marblehead, MA 01945 617-639-0285

FRONTIER SOFTWARE provides the best in games and practical programs for the ZX81 and TS 1000. For a free list of available software write to FRONTIER SOFTWARE, Box 385, Vilna, Alberta, Canada, T0A 3L0.

* * * * * C.R.C. SOFTWARE * * * * *

* SINCLAIR - ATARI - VIC VERSIONS *

* Also *Smart* Printer Interface *

* Send $1.00 Refundable on First *

* Order For Information, Catalog *

* 2901 Auburn-Auburn Hts MI. 48057 *

H-E

H\RVVRD

GROLP

Bolton Road, Harvard, Mass. 01451

First Class

U.S. Postage PAID

Harvard, MA Permit No. 8 01451