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MAY/JUNE ’85 - $3.00 


. FOR THE T/S 2068 AND ALL OTHER 
VOL. 1 NO.4 TIMEX AND SINCLAIR COMPUTERS US. FUNDS 


TRAC 
DeSag MS 


MAGAZINE 


BERRUAIIL1 1 | MAROC) 1 BRO 1 


2068 
is 
COMING BACK! 


DETAILS 
INSIDE 








INTRODUCTION TO COMPUTER CONTROL 


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BUDGET ROBOTICS & COMPUTING, BOX LSeie. TUCSON. ARTZOHA sors 






Above shows fully PoPulated BUFFERED BUSS EXPAHSIONM BORED and 
Rx-S1 PARALLEL I-0 BORRED Plugged into TS1@68 with 16K RAM. 3 
volt 3 amP regulator CtoP rights, bufferdecoder Ile Cacross 
toro. six exPansion cannector Points across bottoms with Fe-ol 
I“ board Plugged into exPansion Point second from left. 


BUFFERED BUSS EXPAHSIOH BORED - & 3°86" « 8 14" double sided 
Plated thru holes-Parts list“documentation-9S8 desree connector. 
For 2RSG, 2HB1, T1680 & TS1i50G. Versions available: 
"EXP-1? Bare board version 465 
“EXP -1A’ Fully FoPulated kit ; te 
"ERP-1B’ Economy kit $62 
Cadd EXP-1F and EXP-1C later for a fully PoPulated boards 
“EMP-1R° S volt-3 ame regulator kitcuse with EXP-1B or EXP-1> $7 


gs ES mies 3 Oe Extra cannectore use with EXP-1B or EXPL 2 $11 


RHM-81 Parallel IO board - 2 3¢8" « 3" double sided-Plated thru 
holes“Parts list‘documentation. For 2886, 2Xe1. TS14@8. TSis0@ & 
TSs28e8, Versions available: . : 
"RH-81° Bare board 1 
"RX-G1A’ Fully PoPulated kit. $25 
CPluas into comPuter’s rear exPansion slot > 
*RH-SIE’ Fully PoPulated kit, miftus connector . $21 
(Plugs into BUFFERED BUSS EXPAMSIOM BORRD » = 
*Rie-S1iC’ Demo“test kit | $f 
(LED array and DIP switch for outPut and inPut deémo-t 
Order ty alpha-numeric abbreviation (i.e. “EXP-1B°’o, Posta 
handling to U.S. and Canada included. Overseas add 18%. Sen 
check om money arder (U.S. dollares? allow check clearanc 


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FOR THE T/S 2068 AWD ALL OTHER 
TIMEX AND SINCLAIR COMPUTERS 


BRDU 01111 | AMY 10111 11 RAD AR 


ICR 
Designs 


pant RAN | BEN MR! 
MAY/JUNE ’85 


VOL.1 NO.4 
Publ ished by: 


TIME DESIGNS MAGAZINE CO. 

i 29722 Hult Rd. 

4 Colton, Oregon 97017 
(503) 824-2658 


MAGAZINE 


Editor: Tim Woods 
7 Assistant Editor: Stephanie Woods 
Photography and Production: Tom Judd 
Consultant: M.J. Marsh 
Contributors In this issue: 
Bruce C. Taylor 
John McMichael 
Edwin S. Salter 
i Dick F. Wagner 
Bill Gunter 
Dennis Jurries 
William D. Erickson 
Paul T. Erickson 
Tim Woods 
Tom Judd 
Printed by: Toad'L Litho Printing and 
Composition, Oregon City, OR 


NOP) SMR ti saree, 


Bate Reem) 


2 Time Designs Magazine is published bi- 
monthly and is copyrighted © 1985 by 
the Time Designs Magazine Company. 
Reproduction of this magazine In whole 
or in part by any means without written 
permission is prohibited by law. 
Subscriptions: $15 for one year (six 
issues) in U.S. funds only. 3rd class 


j bulk rate postage is paid for by T.D.M.C. 


j , 
, permit no. 51, Colton, Oregon. 


INSIDE 
BON ana 


Baitor Ss. COTne?s. « oaseoas 
Letters To The Editor.. 
Bits And Pieces ¢ «2-40 +e at eee 


SPECIAL REPORT: 2068 Is Returning 
To The U.S 


Introduction To Computer Control.. 
Machine Code Joystick Routine..... 
Z0GS .COLST - Gs 5 tse Ce & 6s 30-2 

A Graphics Problem For The T/S 2068. 
2068 Program: Slot Machine. «sass ss 
VAMP TV To Monitor Kit... 

Tasword: TWO> Ti DB w<. dees 4 60S se Hes 
PRO/FILE 2068.... 

Coupon Magic.... 

Tie. Dealer “4 Deis oxi « eee st ess 
Damco/Rotronics Wafadrive Reviewed. 
TS: 2068/Spectrum-Wares., « «0544 ss» 2 


The Shopping Mart...... eee rT 


The intel !igent computer- 
controlled droid on this 
issue's cover was designed 

on the Cover: and drawn by Debbie Woods, 
an artist from San Jose, 
California. 








I recently returned from a 
trip to California. Sinclair con- 
puting is alive and well in that 
large west coast state, and I was 
able to visit with some interesting 
T/S enthusiasts (in-person and a 
few on the phone). Jerry Chamkif, 
president of Aerco im Austin, Texas 
was also in California on business 
(and vacation) at the same time as 
I was, but unfortunately our paths 
never crossed. Jerry demonstrated 
his new 2068 Disc System at the 
San Francisco Users Group meeting. 
There were some problems with the 
disk software and the system 
crashed a few times. This has been 
corrected with some help from Jack 
Dohany of Menlo Park, CA. Aerco 
started shipping Disc Systems and 
Interfaces: on- Apri 72. 

My first stop was Sunset Elec- 
tronics down by the waterfront in 
San Francisco, to meet with owner 
and proprietor John Warburton. This 
1s one of the few.adctual stores in 
the U.S. that deal in Timex Computer 
Equipment and Accessories. I even 
found Time Designs Magazine on the 
book rack there. Sunset Electronics 
also does a large mail order business 
(32 page catalog available upon re- 
quest. Writs to: -2254 Tereyal Sires 
San Francisco, CA, 94116). John end 
some other T/S users in the Bay Area 
were preparing for the annual West 
Coast Computer Faire on March 30- 
April 2. Arrangements had been made 
with Sinclair to show a QL there. 

Down the Peninsula a few miles, 
in the Silicon Valley I found the 
manufacturing and operating facility 
of A & J Micro Drive. Jim Howell is 
the ''man-in-charge" here, and they 
have recently introduced a stringy- 
floppy system for the -stock T/S 2068. 
Along with Jim, there are 10 other 
employees who assemble and test the 
drives and wafers. A & J's biggest 
business is drives and interfaces 
for various models of electronic 





—\ Editors Corner 


typewriters on the market. While I 
was. there, Jim told me that he had 
purchased the rights and equipment 
of the wafer technology used in the 
T/S 1000 Micro Drive from Entrepo 
(the inventors). A § J will now 
incorporate the model 1000 Style 
wafers (version 0) and drives into 
the model 2000 for the T/S 2068. 
The original model 2000 used a 
different wafer (version 2) and are 
not compatible with the new units 
being shipped. On the outside the 
model 2000 Micro Drive will remain 
the same. 

Before heading south, I chatted 
on the phone with Bob Orrfelt of 
Redwood City, CA and also Rita Cary . 
who is the chairperson of the Silicon 
Valley T/S Users Group. Bob Orrfelt 
has his own cottage industry and 
offers a 64 Col. Word Processor for 
the 2068, and some nifty new EPROM 
Cartridge Boards. Among some other 
things he has been working on is 
fixing up the "bugs" in the 2068's 
ROM. Bob may be contributing some 
information for Time Designs readers 
in an upcoming issue. 

Down in Los Angeles, home of 
congested freeways, smog and Mickey 
Mouse...I met with Sinclair computer 
expert. Dave Clifford. Dave:wrote a 
review in our last issue on the Z- 
Link interface card. He is also very 
knowledgeable on telecommunications 
using the Westridge 2050 Modem and 
MTERM II Software. Dave demonsrated 
his Sinclair Microdrives on the 2068 
for me. They are very compact little 
units, but also very fast! 

Well here we are back "home". 
And before closing, I want to say 
thank you to all of you who have 
mentioned or shown your copy of Time 
Designs to other T/S users. It is 
appreciated and benefits us all. Not 
only does it increase our circulation, 
but it will also enable us to add 
more pages and articles to the mag- 
azine for you. 


See you next issue! 
Tim Woods/Editor 











An unidentified employee assembles Model 2000 
Microdrive units for the Timex 2068. Circuit 
boards and ribbon cables are shown on the left. 


Jim Howell in his office at A & J Microdrive 
in Sunnyvale, California. 


Send your corre- 
spondence to: Time 
Designs Magazine, 
C/O The Editor, 
29722 Hult Rd., 
Colton, OR 97017. 


letters to the editor 





Dear Tim, 

Yesterday, as one of the guest 
speakers at the bi-monthly meeting 
of the West Los Angeles ZX81 Users 
Group, I received a complimentary 
copy of the March/April '85 issue 
of Time Designs through the co- 
operation of Ed Gray. 

What a nice job you're doing! 
I found your magazine contained 
lots of useful material, was clearly 
printed, and reasonably free of 
typos. The reproduction of LISTings, 
photos and graphics was particularly 
good compared to most other Timex/ 
Sinclair publications (mostly news- 
letters). 

My personal involvement in the 
Sinclair/Timex world has been min- 
imal since I completed my Howard 
W. Sams book on the 2068 almost 
two years ago ("'TIMEX SINCLAIR 2068 
BEGINNER/INTERMEDIATE GUIDE"). I've 
Since written three other books- 
the "awful" ADAM, the "spectacular" 
Sanyo MBC 550 Series, and the "rot- 
ten" Apple //c. (Those quotes rep- 
resent my one-word reaction to the 
computer. 

However, your readers might 
be interested that last December 
I got the loan of an English Sin- 
clair QL for a month, and did an 
over-7000 word detailed review for 
MODERN ELECTRONICS (76 North Broad- 
way, Hicksville, NY 11801, $12.97 
for 12 monthly issues). This slick 
new magazine (8 issues so far) is 








about 100 pages per issue, and 

covers the whole field of electronics 
for hobbyists and experimenters, with 
considerable computer coverage. They 
have scheduled the QL as the cover 
story of the June issue, which comes 
out in May, pending FCC approval of 
the U.S. QL (which is expected anv 


Sincerely, 
Fred Blechman 
Canoga Park, CA 


(EDITOR- Thank you very much Fred 
for the nice compliments about TIME 
DESIGNS. We keep trying. Our readers, 
T am sure were interested in hearing 
what you were up to Lately. Many of 
them have your Howard W. Sams book 
on the T/S 2668. Also, I would Like 
to mention to our readers that you 
have agreed to contribute some info 
on the QL ina future issue of TINE 
DESIGNS, ) 


Gentlemen, 

Thanks for your copy of VOL 1, 
NO 3. Very well Executed! Being a 
ZX81 owner, I do hope you will not 
forget us, 


Sincerely, 

L. Chavarie 
Ottawa, Ontario 
Canada 


(EDITOR- We certainly won't forget 
you. ZX8J] users have received a Lot 
Of crrticsm in the past, but Bruce 
C. Taylor's anticke on computer 
contrack in this issue, affinams what 
avery powerful Little computer «t 
45. We wih give you more programs 
and anticles in the future.) 


SEE BITS AND PLECRS ooo 


SINCLAIR NEWS 


Sinclair of the U.K. has just recently 
returned from a couple of electronics in- 
dustry trade shows in the Soviet Union. 

The Kremlin is trying to upgrade their 
culture and education system with micro- 
computers similar to what one might see in 

a typical American elementary school class- 
room. The iron curtain hi-tech industry is 
years behind other parts of the world as far 
as mass production. Existing microcomputers 
in the Soviet Union consist of poor copies 
of the Apple II. Sinclair demonstrated their 
Spectrum Plus and QL to the eager Soviets. 

I wonder what they thought of “one stroke 
keyword commands?" 

Sinclair has ceased production of the 
original ZX Spectrum (16k and 48k versions), 
and is marketing exclusively the Spectrum 
Plus. This computer is styled after their 
top-of-the-line QL. Has an improved keyboard 
and 48k RAM. 

Speaking of the QL, Mary Reinman of 
Sinclair (U.S.) could not give us word of 
it's release as we went to press. The comment 
was made that FCC approval was just "a couple 
of weeks" away. Some experts here and abroad, 
claim that FCC has already approved the com- 
puter, and that Sinclair is waiting for 
units to ship before they announce avail- 
ability. 

One U.S. vendor that is patiently 
waiting for the release of the QL, is Curry 
Computer (5344 W. Banff, Glendale, AZ 85306). 
They have stocked a large quantity of QL 
software and books. They also publish a news- 
letter called "The QL Report". In the April 
'85 issue that we received, there was a 
sample of a QL screen display from a program 
called "GRAPHIQL". Very impressive. 


The English computer press has not 
always been very kind towards the QL, and 
on more than one occasion remarked about 
it's rather "slow" operating system. How- 
ever, the few individuals here in the U.S. 
that are fortunate to own the British QL, 
are very pleased with the computer and speak 
very favorably of it. We have yet to see 
what changes Sinclair made on the machine 
to bring it to America. 


4 


TELECOMMUNICATIONS 


The Weymil Corp. (Box 5904, Bellingham, 
WA 98227-5904) has a software package called 
MINI XMOD 1.5 for the ZX81/TS 1000/1500 and 
the Westridge and Byte Back modems. It has 
the ability to access the CPM files section 
of any XMODEM protocol BBS to up or download 
Timex programs. Features include memory 
storage of screen displays and an indicator 
that reports when memory is full. Document- 
ation and step by step instructions is in- 
cluded. There are both 16/64k versions. The 
64k version stores easily in the Hunter 
Board for instant recall. Price is $20. 


USERS GROUP UPDATE 


Add these Timex/Sinclair Users Groups 
to your list. The March/April '85 issue of 
Time Designs carried a large directory of 
Groups in the U.S. and Canada. If you are a 
member of an active group that did not appear 
on this list, and would like to be mentioned; 
please send us the information. 


Timex/Sinclair Users Group 

Hughes Aircraft Company 

Att: Liabrary (personal computer club) 
8433 Fallbrook Ave. 

Canoga Park, CA 91304 

contact: Tony Gomez 


N.W. Florida 2068 T/S User Group 
402 Pine Terrace Circle 

Milton, Florida 32570 

contact: Edwin S. Salter 


REPAIR CHANGES 


TS Connection (3832 Watterson, Cinci- 
natti, OH 45227) has taken over the Timex 
computer factory repair service previously 
offered by Timex in Little Rock, Arkansas. 
They will repair a TS 1000 for $20 maximun, 
and a 2068 for $40 max. The 2068 Tech 
Manual is also carried by TS Connection. 

If your computer is on the fritz, write to 
them at the address mentioned above, or call 
(513) 27¥-5575; 











OLIGER/KINGSLEY DISC SYSTEM 


In a joint venture between John Oliger 
and Ray Kingsley (of Sinware), a new in- 
expensive disc drive controller for the 
2068 will be available sometime in mid 
June. The hardware for the disc operating 
system is being designed by John Oliger, 
while the software to boot up the controller 
is being programmed by Ray Kingsley. The 
main disc interface board is already com- 
pleted. It will support up to four single 
or double sided, single, double or quad 
density 3 to 5% inch drives. The data 
transfer rate of this board (5;-double 
density) is 32k bytes per second...the 
actual rate will be determined by the soft- 
ware efficiency. Software support is only 
planned for the 2068, and possibly the 
Spectrum (in the future). 

Further hardware for the controller 
include a firmware/bank logic/memory board 
and/or the 64k memory/CPM board. These two 
boards are furthest away from production, 
but should be coming along soon. It is hoped 
that the system will respond like the Sinclair 
Interface One with Microdrives, and use all 
the BASIC supported keywords (including 
SAVE and LOAD). Prices on the boards are 
still to be determined. It should also be 
pointed out that the controller is designed 
for use with the Oliger 2068 Expansion 
Board. 

Specific comments/suggestions con- 
cerning hardware for the system should be 
addressed to: The John Oliger Co., 11601 
Whidbey Dr., Cumberland, IN 46229. Comments, 
suggestions, ect. regarding software should 
be addressed to: Ray Kingsley, C/O Sinware 
Software, P.O. Box 8032, Santa Fe, NM 87504. 
If you would like to be put on the system's 
“inform when ready" list, drop John a post- 
card. 

Mr. Oliger also announced availability 
of his new 2068 Parallel Printer Port. It 
is a Centronics type and comes complete with 
software on cassette. It is also Aerco 
compatible as far as commercial software 
is concerned. It is perhaps the lowest 
priced printer interface of it's kind, with 
the fully assembled and tested version (with 
cable) going for $47.90. The kit with parts 
is $24.95 (add $16.95 for cable), and a bare 
board is available for $16.95 and includes 
the cassette. A 15 page user manual is 
supplied with every version. 


et ? te We Te i ee i 


3 











MISC. 


E. Arthur Brown has always put out a 
very professional and slick brochure. The 
most recent one continues the tradition. 

It probably has something to do with Eben 
Brown's (the owner) experience in the pub- 
lishing business. The EB7 catalog is on 
newsprint paper and features a host of hard- 
ware and software for Timex computers. For 
your copy, write to: 3404 Pawnee Dr., Alex- 
andria, MN 56308. 

The printer interface cable and soft- 
ware for the A & J Model 2000 Micro Drive 
is now available. For information and price 
write to: A & J Micro Drive, Suite I, 1050 
E. Duane Ave., Sunnyvale, CA 94086. 

The address for the D. Lipinski Soft- 
ware Buyers Guide To Sinclair-Timex Products 
And Services, that we mentioned in the March/ 
April '85 issue is: 2737 Susquehanna Rd., 
Roslyn, PA 19001. Price is $20 ppd. 

Kirt Olsen, Publisher/Editor of Syntax, 
told Time Designs that he intends to con- 
tinue publishing the newsletter. He also 
mentioned that Syntax (and SQ Magazine) is 
up for sale. The last newsletter that Kirt 
put out was the November '84 issue. He 
told us that the December '84 issue of 
Syntax should be out in another month or 
so. 

Time Designs Magazine would like to 
welcome all our Canadian readers "on-board" 
who have recently subscribed. The number of 
our friends up north grows each day. It 
just goes to show you that Canadians know 
a good computer when they see one. Happy 
Sinclair computing to you all! 


ZX81/TS 1000 KEYBOARD 





A large number of ZX81/TS 1000 users 
have “discovered” perhaps the best keyboard 
add-on that has ever been offered for the 
price. It is the computer keyboard that 
was used with the Texas Instruments 994/a. 
They are being sold at surplus electronic 
outlets and some Radio Shack stores for the 
extremely low price of $2.95 to $5.95 (de- 
pending where you obtain one). The challenge 
is the installation. We have seen some 
nice ideas. Hopefully, we will be able to 
print them in an upcoming issue. If you 
have a suggestion, send it in and we may 
print yours. 


Te i? ee ee 8 


SPECIAL REPORT: 


2068 IS RETURNING TO U.S. 
WNVULUCUUOUCUUOUCOUOUUQUEO00U000000000000000000000E000000 00000 0UEU EEUU 


When Bob Dyl of the English Micro 
Connection contacted Timex of Portugal 
to see if he could obtain supplys of their 
new floppy disk system and 2068 “silver 
avenger" computer (as so nick-named by 
the British computer press), both of which 
had been sold in England for several 
months, he learned of some very suprising 
news. Antonio Gomez, the Managing Director 
of Timex Portugal told Bob that they 
were in the process of bringing the 
2068 and the disk system to the United 
States themselves. In fact samples of 
each were currently in the hands of 
the FCC for approval. At this writing a 
Mr. Olivera who is the assistant to Gomez, 
is in Waterbury, Conn. at the Timex Corp. 
headquarters (which Timex Portugal is using 
for their temporary base) to finish 
up last minute paperwork, including sign- 
ing the FCC certification release papers. 

This certainly is a strange situation. 


A Timex paradox of sorts. Just a little 
over a year ago the Timex Corp. killed 
the 2068 in spite of strong support 


by both consumers and the computer press. 
And now, here is their Portugal counter- 
part bringing back almost the same computer 
to the American market. It isn't quite 
known exactly what Timex (U.S.) role in 
Portugal is and what are the controlling 
interests. It is known however, that 
both Portugal and the U.S. owned Sinclair 
technology rights, and when Timex U.S. 
dropped out, Portugal continued to use 
and produce that technology. 

Antonio Gomez told Bob Dyl_ that 
if everything goes as planned, _ they 
should start shipping units by the end 
of May. As far as what marketing strategies 
are going to be used, and who will 
sell the computers and drives...the de- 
tails are sketchy. Most of the Sinclair 
vendors that still exist here, have 
expressed interest. 

The old Timex/Sinclair 2068 that 
we are familiar with has maintained 
its silver case and keyboard, but has 
been retitled simply the "Timex 2068". 


6 


It's main circuit board has been a complete 
redesign, but has maintained the two 
ROM system, the sound chip, and the 
joystick ports. It now operates on nine 
volts instead of fifteen in the original 
model. In the cartridge port is a plug- 
in type Spectrum emulator board, and 
the rear connector has been reconfigured 
to be the same as that of a Spectrum. 
So basically, what you have is a Spectrum 
in 2068 clothes, with some of the subtle 
advantages of the 2068 remaining intact. 

A nice addition to the Timex 2068 
is it's accompanying disk drive system 
called the “Timex FDD." It is a four piece 
package with a power supply, interface, 
controller board, and a 3" Hitachi drive. 
The disk operating system is called 
(TOS). A CP/M board may be _ released 
a little later. Portugal is also planning 
to market the disk system for the U.S. 
T/S 2068 also, with a suitable interface 
for that computer. 

Retail pricing for the 2068 and 
FDD has not been set as of yet, and Gomez 
told Bob Dyl that they were going increase 
the prices from which they first estimated. 

Reaction has been mixed to this major 
announcement by Timex. Criticism and 
skepticsm has been voiced by those who 
still bear the scars from when Timex left 
the computer market a short while ago. 
Some disappointment has been expressed 
as to the incompatibility with existing 
hardware that has been developed over the 
past year for the old 2068. But the excite- 
ment is spreading for the most part, as 
Sinclair users in general here in the U.S. 
can expect to see much on it's way as far as 
support for the 2068/Spectrum is concerned. 
Quite a bit of software and hardware will 
no doubt be heading this way from major 
English companies. 

Time Designs Magazine would like 
to express thanks and appreciation to 
Bob Dyl of the English Micro Connection, 
for releasing this information to the 
American Timex and Sinclair users. 


9, 











INTRODUCTION TO COMPUTER CONTROL 


by Bruce C. Taylor 
Tucson, Arizona 


OK all you T/S 2068 buffs, 
dust off that. 2X81 -or T/S:-1008 
(excuse me for a moment ZX81 and 
T/S 1000 users) and let's do some 
serious things with your computer. 
No, I'm not talking about doing 
your income taxes, balancing your 
checkbook or writing your first 
novel, When I say serious, I mean 
controlling something with your 
computer. Although you can use your 
L/S 2068... y0ur -Zk8PF ox 7/8--12000 
will do the job very nicely too. 

Control what, with your com- 
puter? Control anything you think 
Right be: nace to controd. Your 
lights, your garage door, your 
coffee pot or even your personal 
robot. PERSONAL ROBOT? Yes, your 
lowly T/S 1000 (excuse me again 
‘ZX81 and T/S 1000 users) is very 
capable of nearly anything you want 
to control with a computer. Remember 
those personal computer experts who 
brushed off the Sinclair and Timex 
computers as mere "toys" good only 
for learning about the basics of 
computing, but not for "serious" 
computing? Those "experts" now say 
you shouldn't tie up a personal conm- 


puter with mundane home control tasks. 


Well,-the. experts can be correct half 
the time. 

Even’ in the: face of- current Io 
bit and soon to come 32 bit home con- 
puters; don't-tet-anyone sell .the:s 
bit Z80 CPU computers short. The Z80 
based computers are an excellent 
choice for control applications. If 
you don't believe me, look to Japan 
where an assult on the small com- 
puter market has been launched with 
their MSX (MICROSOFT EXTENDED) con- 
puters. One of the prime reasons 
they selected the Z80A CPU was be- 
cause of it’s potential for control 
applications, 

In your ZX81 or T/S 1000 con- 
puters (include the T/S 1500, T/S 
2068 and SPECTRUM too) you have the 

















makings of a very capable computer 
control system. ALl you. need to get 
started "interfacing with the world" 
is to add an input/output (I/0) 
board to your computer. 

But wait a minute, before I 
launch into the details, you may 
have the following question. Why 
build a control project from scratch 
when I can buy a robot or home con- 
trol/security system out of a box? 
First of all, it will probably be 
cheaper to build it yourself. Also, 
if you are inclined to tinker and 
build, you can continually expand 
and upgrade your system as you de- 
Sire. This allows you to take ad- 
vantage of new equipment/component 
advances, not to mention software 
upgrades. 

Foy ¢€xample, if you: buiit a 
personal robot as I have done, you 
may have designed the controlling 
software to use the input avoidance 
technique of navigating around the 
house. With the addition of a range 
measuring device, like the Polaroid 
Ultrasonic Ranging Device, you can 
advance the navigation capabilities 
to a goal seeking ability... Ties can 
be done by modifying the software 
so that the robot seeks open areas 
to navigate through, much like you 
seek a doorway as opposed to avoid- 
ing walls in a roon. 

Back to the problem of building 
an I/O interface for your computer. 
Several options are available. One 
was described in a series of articles 
in RADIO-ELECTRONICS MAGAZINE last 
year. Another is an inexpensive I/0 
board offered by BUDGET ROBOTICS §& 
COMPUTING of Tucson, Arizona. Both 
offer eight parallel lines of input 
and output, and use simple machine 
code subroutines to give a very fast 
I/O capability. How fast? The Budget 
Robotics board includes documentation 
for a simple optical encoder that can 
measure inputs up to several hundred 
pulses a second, and all for only a 








few dollars. Is that fast enough and 
cheap enough to entice you to get on 
with this computer control area of 
interest ? 

Budget Robotics in fact offers 
an expanding line of peripherals in- 
cluding a buffered buss expansion 
board (currently for Zx81, T/S 1000 
and T/S 1500) to allow you to add 
an almost limitless number of items 
in your computer control project. 

In fact, I have written a book de- 
scribing these and other projects, 
to be published by early 1986 by 
TAB BOOKS... The centerpiece of. the 
book is "H.EON.R.~Ys" am ent eras ly 
computer controlled personal robot. 
He won a Golden Droid Award for 
Most Entertaining at the First In- 
ternational Personal Robot Congress 
& Exposition in Albuquerque, New 
Mexico last spring. What computer 
is inside H.E.N.R.Y.7 You guessed 
it, a Sinclair ZX81. Hardware and 
software forall control projects 
is fully explained in the book. A 
home control interface is also de- 
scribed. 

The expansion board used is the 
one originally built by COMPUTER 
CONTINUUM, but has been improved. 
This board can also De Meged to. build 
a memory bank switching capability 
as described in Paul Hunter's series 


of articles in T-S HORIZONS Magazine. 


Using Paul's non-volitale memory 
board, control routines can be cre- 
ated and saved for instant loading 
into computer memory and easily 
changed as upgrades to your control 
project are needed. This method is 
cheaper and easier than burning 
Programmable Read Only Memory (PROM) 
chips, or trying to buy Electrically 
Eraseable PROM (E2PROM) chips. 

Other expansion boards and I/0 
circuits can be used which will also 
do a good job. John Oliger described 
an expansion board in a Winter 1982 
SYNTAX QUARTERLY article. An I/0 
circuit using the. 8255 Ppl tere 
grammable Peripherial Interface) 
integrated circuit chip is not as 
fast (no machine code) as the RX-81 











8 


I/O circuit, but works fine in many 
applications. Wiring of the 8255 
circuit is included in Budget Robotics 
expansion board documentation and is 
described in my book. 

To give you an idea of the 
range of control applications I am 
proposing, refer to Figure 1 as you ? 
read the rest of this article, Start- 
ing with the computer expansion port 
at the rear of your computer, you 
will want to add an expansion board 
if you expect to add more than two 
peripherials . Next. you wild need at 
least one input/output (I/0) board. 
The number? and type of I/0 boards 
will depend on what and how much you 
want to control. For example, you 
could easily add up to four RX-81 
1/0 boards: tand. ah 8255. PPI giving 
you up: to either 56° input: ‘and: 32 
output lines or 32 input and 56 out- 
put lines... Each peripheral, ‘as de- 
scribed<in- Figure 1,: may require 
anywhere from one input line (optical 
encoder) to four input and seven out- 
put lines (realtime clock). 

The following are examples using 
the RX-81 I/O bord: A realtime clock/ 
calendar using seven output plus four 
inputs lines: to read-the=time...A 
mechanical switch can be read by 
connecting an input line to ground. 

A transistor to transistor logic 
(TTL) state of low can be read 
directly by am input line. A logic 
high state can be read if inverted 
first, using a 74LS04 IC chip. The 
Polaroid (TM) Ultrasonic Ranging 
CiTrecuit-regui res. one out put -lireto 
initiate a pulse transmit and one 
input Tine to read the return: pulse; 
One input line is all that is re- 
quired-t© read tie status of.a 
phototransistor in the optical en- 
coder. 

The following are examples > 
uSingithe: 8255° PPisei reat] Tre 
outpute lines are-used- to. control 
a stepper motor driver with one r 
line dsignating the direction of 
the motor rotation, and the other 
producing the step pulse. Ten out- 
put danes are useédito: control the 


Figure l 
COMPUTER CONTROL EXAMPLES 


COMPUTER 1/0 


EXPANS LON op 3 BOARD 
PORT EXPANSION 


REALTIME 
CLOCK 
CALENDER 


BOARD 
C OPTIONAL ? 


ADDITIONAL 
RAM, EPROMAM 
E2PROM, NON- 
VOLATILE RAM 
etc. 


PRRALLEL 170 BOARD ¢RXB1 > 
FOR FAST MACHINE CODE 
CONTROL 


PROGRAMMABLE PERIPHERAL 
INTERFACE CPPI> 170 BOARD 
£B255> 


ALL THESE PERIPHERIALS 
PLUS MORE CAN BE 
OPERRTEG WITH ONE 2X81 
or TS1B86 


Digitalker (TM) Digital Voice Circuit 
with two ROM (Read Only Memory) word 
sets with eight lines used to select 
the word; one to select the ROM word 
set and one to activate the processor 
to produce the word. 

The following are examples of 
control easily accomplished using 
either of the I/O circuits mentioned: 
Two output lines are required to con- 
trol a direct current (DC) motor and 
select either direction where one 
output line is used for forward and 
one reverse. Each drives its own 
transistor switch which in turn 
activates a double pole, double 
throw (DPDT) relay coil. The coils 
are cross wired to the normally 
closed terminal of the opposite 
relay so that power to the motor 
cannot accidentally be applied in 


9 


SWITCH MECHANICAL 
ACTION 
TTL LOGIC 


TTL LOGIC ULTRASOHIC 


RANGIHG 
CIRCUIT 
TRANSISTOR 
SWITCH 


170 
BOARD 


OPTICAL 
ENCODER 


TTL LOGIC LED 


v 
PHOTO~ 
TRANSISTOR 


TTL LOGIC POWER 
SUPPLY 
| STEPPER 
MOT OF: 


DIGITAL VOICE 
FEECH PROCESSOR. RUM 
and AMPLIFIER 


TRANSISTOR > RELAY i DU 
SWITCHES COIL MOTOR 


RELAY 
COIL 
APPLIANCE 


or 
HOME WIRELESS: 
CONTROLLEF 
SWITCH 


TRANSISTOR 
SWITCH 





both polarities at the same time, 
causing a direct short circuit. For 
appliance or home wireless control 
Switching, one output line is re- 
quired for each on/off switch. Here 
each output line controls a transistor 
switch which in turn controls a relay. 
A light emitting diode (LED) can be 
activated in conjunction with any 
output line activity. 

These examples are provided as 
food for thought. You can control 
virtually anything with your computer. 
Just use discretion. I would not 
recommend trying to control Aunt 
Mary's respirator. One last point, 
all the examples in Figure 1, plus 
more, can be controlled together by 
a single computer (ZX81, T/S 1000, 
ect.). Happy controlling. 


© 


MACHINE CODE 
JOYSTICK 
ROUTINE 


FOR THE T/S 2068 





by John McMichael 
The following is a compact machine Bozeman, Montana 
code routine that provides a 2068 user 
with digital joystick position information 
and button status at machine code _ speeds. 
It was originally designed to be of 
use in upgrading game programs from key- 
board control to joystick control. 


Basically, the two joysticks are FIG. 2 - JOYSTICK DATA LOCATIONS 
controlled via Register 14 of the Pro- ADDRESS DATA 
grammable Sound Generator Chip. Addresses il ge a as sat st 4h 
are transfered by port #245 and data 26715 STICK RIGHT 
by port #246. To read a joystick, 14 ; 26716 STICK LEFT 
is written to port #245, the B_ register 
is loaded with stick no., and the data 26717 STICK DOWN 
is read from port #246 as a_ single 26718 STICK UP ‘ 
byte with direction/button status bits 
ecto as shown in fig. l. 26719 "FIRE" BUTTON 

FIG. 1 - JOYSTICK DATA BYTE 
Bit - 6 5 4 3 2 1 @ 
| not used | \ i. =e 
button stick stick stick stick 
depressed right left down up 
The program in fig. 3 is a _ machine 

The routine, as presented in this code loader which puts the machine code 
article, resides ina 1 REM statement, into the 1 REM statement. 
although it can easily be relocated. As the resulting 1 REM machine 

Providing the second display file code lint is partially unlistable, any 
is not used, the first available address Subsequent program lines will be unlistable , 
in acd. "REM “statement 92> 26715. This unless...the[>]cursor is set to a line 
and the next four addresses are where no. equal to.or larger than the next 
the results of reading a joystick will line no. after the 1 REM and the following » 
be stored (see fig. 2). After the routine two direct commands are entered: POKE 
is. called, a >1 421. bei sfoumd° “in’ the 23660, (your next program line above 
addresses corresponding to positive switch the 1 REM line): POKE 23661,0. This 
closures and O's in those addresses cor- will cause the automatic listing to start 
responding to negative or "open" switch at your first program line. 
conditions. Enter and RUN the following machine 


code loader: 


ee AO ee ee eee 











Fig. 5 is the OP CODE listing 
for the 1 REM routine. 


___._ FIG. 5 - OP CODE LISTING 


FIG. 3 - MACHINE CODE LOADER 











Lines 10-40 of the loader can be 
DELETED and the remaining 1 REM machine 
code line can be SAVED to be later 
MERGED with any program that is’ being 
up-graded to joystick control. 

At the point in a program where 
joystick information is needed, address 
#26736 is POKED with the desired joystick's 
no. (1-LEFT; 2-RIGHT) and the routine 
is called at 26720. 

By PEEKING addresses 26715-26719, 
the sticks' position and button status 
are obtained. 

The following program is a_ typical 
example of how the routine may be used 
to move a single character around the 
screen with a joystick. The program will 
stop when the "fire" button is’ pressed. 


remavder is un (stab fe by Edwin S. Salter 
Milton, Florida 


Pg ey th 






Fi ads ee er 9 


rey tr fh 
“rth 


5 ee ae ee Pe ee 





ee 1) ee eee ee eee 


A GRAPHICS PROBLEM for the T/S2068 


A "SERIOUS" GRAPHICS DISPLAY FOR THE 2068 AND 2040 PRINTER 


by Dick F. 


Wagner 


Canby, Oregon 





One of my pet beefs with many 
computer programmers is their lack of con- 
cern for identifying the basis for their 


programs. The display of the formulas/ 
equations used, would help the user decide 
if the program is indeed the one needed 
for his -{or her) calculations. It is 
often not easy to pick this information 
out of the program because of the way 
the programmer had to chop up the formula/ 
equation. Also there should not be the need 
to spend a lot of time trying to identify 
the information needed. 

The following program is substantiated 
as to formulas. This makes it easy to sub- 
stitue as you wish. However the problem is 
complex in that several sytems are involved 
in developing a problem display. The 
formal graph with x and y axis, notations 
and scales provide an example for similar 
displays. The derivations for generating 
an equilateral triangle as well as drawing 
an inner and outer circle touching the tri- 
angle shows the steps. The chart coordinates 
have suitable divisions marked off, as well 
as enhancing every 5th division. The end 
product, instead of just displaying a tri- 
angle and 2 circles, shows the result 
of calculating a problem with interpretive 
results. 

The first step is to draw the 
x and y axis, scales, divisions and 
headings. The radius of the outer circle 
is to be 40 inches. Use a scale of 
one pixel as one inch. Therefore, we 
need to provide for a figure 80 by 
80. For a nice balance, place the circle 
center at 95 (x axis) and 80 (y axis). 
To allow space for x and y axis data 
place the x axis 20 and the, y axis 
at 25. Position markers every 10'pixels . 
(inches) and enhance every 5th mark. 
Remember that all positions are with 
respect to 0,0 for PLOT (bottom left 
corner) and 0,0 for PRINT (top left 
corner). 


A A et a 
a] 


Lines 10-190 generate the axis, 
markers, axis numbers and axis names. 
Many lines include a printer correction 


factor of 1.24 (Timex 2040 Printer). 
This is necessary to produce a symetrical 
image. After all, who wants to excuse 
his (or her) equipment for making egg- 
shaped circles and non-equilateral tri- 
angles? 

. To review the derivation of the 
correction factor, just DRAW a _ square 
of good size, and make a printer copy. 
Measure the height and width (use a dec-— 
imal or metric scale). The ratio of 
these dimensions is the correction factor. 
Now re-draw the square, using this mul- 
tiplyer. For example, assume the square 
was drawn with PLOT 30,30:DRAW 80,0: 
DRAW 0,80: DRAW -80,0: DRAW O,-80. For 
the 2040 Printer, you would change the 
lst and 3rd DRAW to 1.24*80,0 and -80* 
1.24,0. Check your printer to see 
if it is the same. 


Lines 45-110 put in the markers 
on the x axis, and lines 120-190 put in 
the y axis markers. RUN the _ program 
from 10-190 and confirm proper display. 
CLS and the "graph paper" is now ready 
to plot the 3 figures. It is now time to 
calculate the dimensions for the figures 
and decide where to place them. Remember 
that we are going to have a display 
with measuring capability of the finished 


s 


1 9 figures. 





“4 





Calculations start with determining 
the sides of the equilateral triangle 
from one dimension, the radius of the 
outer circle. That has been given as 40 
inches (3rd paragraph). Key in lines 395- 
470. DELETE later if desired. This 
part will draw a right triangle (any 
scale) and from the hypotenuse (the 
radius of the outer circle), we can 
determine % the base and the radius 
of the inner circle. 


These formulas will be used: 
b=a*SIN B/SIN A 
c=a*SIN C/SIN A 
circle=r*COS 2*PI,r*SIN 2*PI 


a is radius (40), b is % the base 
of the equilateral triangle and c is the 
radius of the inner circle. All is 
shown on the sketch. We know that 
an equilateral triangle has all angles 
equal to 60 degrees. A line drawn 
vertically bisecting the base will also 
pass thru the circle center. RUN the pro- 
gram from 395, and display the triangle 
along with the calculations. Angle B may 
not be evident, so consider B as 4 of 
one third of 360 degrees. 


rene 





There are all the dimensions’ required. 

Lines 200-320 draw the 3 figures 
with center at 95,80. 

Lines 330-370 put in a title, initials 
(yours) and date. 

I think you will agree that our 
computers can produce a product’ that 
takes it out of just a visual display. 





ix 
po 





rte cre 


a fee 


rs pe 
Od wk We Here DD Dw Je UW ed 


— 


td tJ Ms 


) 


24;" 


2068 
PROGRAM 





REM 2A EEE IEE 
PEM ¥BILLY’S SLOT MACHINEX 
SEM EERIE EEK EEE 
INK 1 

LET P=0 

PAPER 4 

POPUER 4 

as 

LET ==509 

EN SUB tac0 

PRINT AT 1,2835 

PASE 150 

LET AS="CHERRYLEMON PLM ORANGE BELL 
PAPER & 

GO TO 91 

FOR J=! TO 22 

PRINT AT 7,203" . 

PRINT AT 10,33" " 

PRINT AT 11,73" " 

PRINT AT 12,33" " 

PRINT AT 20,13"3 BAR OR BELL=JACKFOT" 
NEXT J 

TIM BS(3, 6) 

FOR J=1 TO 3 


LET BS(J)=A8(L4+6% INT ( RND ¥7) TO 42) 
IF BS(J)="CHERRY" THEN PAPER 2 

TE BS(T)="LEMON " THEN PAPER 4 

IF BS(J}=" PLUM " THEM PAPER 3 

IF BS(J)="ORANGE" THEN PAPER 2: INK 6 
IF E$/3)=" BELL " THEN PAPER O: INK 6 
TF BS&(J}=" -BAR-" THEN PAPER 7: INK O 
PRINT AT L1,7¥J-S}88(I) 

BEEP .05,15 

PAPER 6: INK 1 

NEMT J 

PLOT 714,49 

TRAW 9,55! DRAW 2,9: DRAW 0,22: DRAW - 
30 SIIB 2009 

PRINT AT 7,2;"DEPQSIT 2 BITS-->" 
PRINT AT 7,213 FLASH 13"5" 

IF INKEYS ="d" OR INKEY® ="D" THEN 
AT 7,203"25c": GO TO 85 

GO TO 33 

PRINT AT 6,283"PULL": PRINT AT 7,273 
PRINT AT 7,263 FLASH 13"P" 

LET S=S$-25: PRINT AT 1,28;S 

IF INKEY® ="p" OR INKEYS ="P" THEN 
GO TO 389 

PRINT AT 5,263" "$3 AT 6,263" "§ 
"3; AT 10,263 “s AT 11,263" "3 AT 12,2 


14 


SLOT MACHINE 


by Bill Gunter 
Sacramento, California 


REAL LAS VEGAS STYLE CASINO ENTERTAINMENT! 
The program is a slot machine which plays 25 cent 
pieces, and keeps track of your winnings and 
losses (it even plays a little fanfare if you hit 
the jackpot). The odds ought to be pretty close 
to Nevada odds, and should keep the children 
quiet for hours. It is important to get the 
spacing just right in line 15, since the "fruit" 
which appear in the slot machine windows are 
"slices" of the character string "A$". (EDITOR'S 


NOTE: this listing was made with a printer 
that doesn't use @" for zero. So be careful 
when entering numbers in this program.) 
-BAR-CHERRY" 
93° GO TO 20 

1000 PRINT 

1001 PLOT 0,4 

1002 DRAW 192,0 

1003 DRAW 0,148 

1004 DRAW -192,0 ‘ 

1005 DRAW 0,-148 

1CO6 PLOT 192,24 

1007 DRAW 8,0 

1008 DRAW C,40 

1009 DRAW -3,0 

i910 PLOT 200,30 
3,0: DRAW 9,-22: DRAW 2,0: DRAW 0,-55 
PRIWT AT 7,25" “PR ? 

v 

wget 
GO. TG Fi 
AT 7,26; " "$ AT 8,265" "5 AT 9, 
63" "3; AT 13,263" "3 AT 14,263" * 





— — a 


1011 
1012 
1013 
1014 
10135 
1016 
1017 
1018 
1019 
“ 1020 
1021 
1O2Ze 
LO75 
1024 
1025 
1026 
102° 
1028 
1027 
1030 
1055 
1034 
1035 
1036 
10237 
1C33 
1039 
1904¢ 
+ 2010 


DRAW 12,0 
PLOT 200,48 
DRAW 12,0 


CIRCLE 212,44,5 BENOIT UTI 1 IROOM 11 MTT 


PLOT 210,99 


DRAW 0,55 COMING NEXT ISSUE... 
PLOT 214,99 

DRAW 0,55 

DRAW 2,0 

DRAW 0,23 

DRAW -8,0 

DRAW 0,-23 

CIRCLE 172,116,145 THE 
LOT 6,70 FLOPPY 
DRAW 180,0 DISK 
DRAW 0, 2 INVASION 


DRAW -180,0 
DRAW 0,-28 
PRINT AT 4,5;"BILLYS SLOT" 


PRINT AT 5,73 "MACHINE" l , : 
PRINT AT 14,4:"2 CHERRY PAYS 2" our spectacular summer issue! 


PRINT AT 15,45"3 CHERRY PAYS 5" 
pent at ae,asr2 pcum pays s* —— MDMIINTIT LT NRONONIIUNI11 1 | OUI 


PRINT AT 17,43"3 PLUM PAYS 190” 

PRINT AT 18,45"2 ORANGE PAYS 2" 

PRINT AT 19,4;"2% ORANGE PAYS 10” 

PRINT AT 1,155 "YOU NOW HAVE" 

RETURN 

TF BE(1)=BS(2) AND BS(1)="CHERRY" THEN LET F=50: PRINT Al 1,i5 FLASH 15 "1% 





OU WIN "3P 


201i 


a of 


2012 


IF BS(1)=BS(2) AND BS(L!=BS(2) AND BS(1)="CHERRY” THEN CET P=1i25. PRINT A 
: FLASH 13; "YOU WIN "SP 
IF BS(L1}=BE(2) AND BS(t)=" PLUM ”" THEN LET F=125: PRINT AT 1,15 FLASH 13° 


YOU WIN "IP 


203 


IF BS(1)=BSE(2) AND BS‘1)=BS(3) AND BE( id=" PLUM " THEN LET P=250: PRINT A 


T 1,1: FLASH 135; "YOU WIN "5F 


2014 


TF BY(1)=BS(2) AND BS(1)="ORANGE” THEN LET P=125: PRINT Ai 1,45 FLASH 15° 


YOU WIN "3P ; 
2015 IF B€(i)=BS(2) AND BS(1)=BS(3) AND ES(1>="GQRANGE" THEN LET F=250. FRINT A 
T 1,13 FLASH 13; "YOU WIN "3P 


2016 IF BS(1)=P8(2) AND BS(1}="LEMON " THEN FRINT AT 1,13 FLASH 13"SORRY, NO W 
IN": PALISE 100 
2O!7 IF BS(1)=RS(2) AND B¢(1)=PS(3} AND BS(1)=" -BAR-' THEN PRINT 41 1,135 FLAS 
H i:"JACKPOT - €10": LET P=1000: GO SUE 40cC %: 
2012 IF BS(1)=BE(2) AND BS(1)=RS(3) AND BS(1)=" BELL " THEN PRINT AT 1,13 FLAS 
H L3;"JACKPOT - $10": LET P=100C: GO SUB 49006 
201° LET S=S+P 
2020 PRINT AT 1,283" " 
‘ 2021 PRINT AT 1,28; 
2027 LET P=0 | 
2025 IF S=C THEN GO TO 3000 
4 204C PAUSE 75 
2050 PRINT AT 1,13" " 
2060 RETURN 
3000 PRINT AT 1,0;"YOU ARE BUSTED-FOR REPLAY HIT "3 FLASH 13°R" 
3010 IF INKEY$ ="R" THEN RUN 
3020 GC Te 301¢ 
4000 PEEP .2,-3: BEEP .2,2: BEEP .2,6: BEEP .4,9: BEEP .2,6: BEEP .8,9 
4010 RETURN 


15 


VAMP 


tv to monitor kit 


by Dennis Jurries 
Oregon City, Oregon 


Lf you want to getyrid of 
un-wanted lines, and improve 
your TV picture without paying 
over $200, then this conversion 
kit i¢ for -you, 

I sent $39 to VAMP Inc., 
and .U days later rT receiver <2 
package containing a circuit 
board, a package containing 
resistors, capacitors, and a 
few other parts, along with an 
eight page instruction manual 
with schematics. After a couple 
hours of assembling the PC board 
and mounting a TV/monitor switch, 
and, the-PC. board....1.was. ready 
to make the circuit/TV con- 
nechiogs. 

Next, I went out and paid 
$8.50. for .a..Sams .Photofact.,..for 
my model of TV (Sanyo). The in- 
struction-manual tells. where, 
and shows typical examples of 
where to make the connections. 

I would still recommend that you 
either have experience with TV's 
or know someone who has, and 
will, help.you.with this part, of 
the project. I made three. wrong 
connections: before getting it 
right. 

The final. result.as- a color 
monitor/TV with a picture every 
bit as good as that of a ded- 
icated new monitor, for a total 
of approximately $48 and a few 
hours labor. 

You cans obtain .the.TV-to 
Monitor Conversion Kit from: 
VAMP Inc., PO Box 411, Los 
Angeles, CA, 90028. 








BATE SBE SSS EAESECLRER REBAR SBLBARALLSSASSAS SS SS SSSSSSS BS SSSR SSS SSS SSS SS 





OK a eA: TE SOATEST RSA AE: LORS OTE: EE 






NAS TE RES S.OL EEE EEE ES REANAS SEBRARAS US REARS SARE REASA RRS ER RAL ESSSSEEE 


WO rood ctpricieneereesanevusiactibanenes Uiameeasethimeniecaaativenmenent = BS 


rene 
oO 





TASWORD TWO TIPS 


by William D. Erickson 


and 
Paul -T = Bei ¢khs6n 5 
Decatur, Georgia 


Many of us that use TASWORD TWO 
are bothered by one thing that spoils 
all the fun. This is the fact that once 
you have printed something on your 80 col. 
printer, you can not again print with 
your T/S 2040 Printer without going 
through a big hassel. Also, many of 
the command functions of the program 
also produce the same result and _ leave 
the user who only has the T/S 2040 
Printer between a rock and a hard place. 

To correct this problem, go to 
the main menu by using SYMBOL-SHIFT 
A, exit to BASIC by pressing b,_ then 
add this line to the BASIC. portion 
of the program: 

29 POKE 26703,0 : POKE 26704,5 

Now GOTO 25, and save this 
of the program by pressing "t". 

Now any time your T/S 2040 fails 
to print, all you have to do is use: 
SYMBOL-SHIFT A, then press "y" to return 
to your text and print to your hearts 
content. This in no way interferes with 
your 80 col. printer. 


version 


2 


LARGE PRINT 


USING TASWORD TWO j 
and a 
T/S 2040 PRINTER y 


Set right margin to 32 columns. 
Set window to a 32 col. screen. 
Stay in this mode when you print 
your text. All other aspects re- 
main the same. Large print still 
works; ‘jst. more so. 








PRO/FILE 2068 is a very special program, 
that the author Thomas B. Woods (no relation) 
has painstakingly put together for owners of 
the T/S 2068. Supplied with the software on 
cassette is a real gem of a users manual. 

It is 143 pages long and makes for some in- 
teresting reading. 

What does PRO/FILE 2068 do? Tom goes 
into great detail in the manual describing 
what it is all about. Basically, it is a 
filing program or "data base". The possible 
applications are almost endless. These 
examples are given: filing mailing lists, 
business transactions, inventories, ham 
radio logs, and all kinds of records. 

Right away, you will probably notice, 
that this data base is a little different 
than some others that were previously avail- 
able. One that I think everyone has used at 
» one time or other, is Timex's VU-FILE. The 
way VU-FILE works is by setting up “data 
fields" that the user specifys when setting 
up his file. Once the data fields are set, 
it is a real pain to go back and change or 
correct the files parameters, without totally 
redoing the whole thing. PRO/FILE doesn't 
use "data fields", but instead stores each 
individual file or record in individual screen 
displays. To change or delete is very easy 
with screen displays. 








17 











PRO/FILE 2068 








reviewed by Tim Woods 
Colton, Oregon 


I gave PRO/FILE 2068 a little test drive, 
I entered 20 of my all time favorite songs 
as individual files each. Included in the 
file was the songs title, author, the year 
it came out, and a few lines from each one. 
I found that entering the data was easy, 
but I constantly had to refer to the manual 
to make sure everything was right. I am sure 
an avid PRO/FILE user would remember all of 
the commands...but as a beginner, I stumbled 
a bit. When all the data had been entered, 
I began to experiment with some of the 
multi-word search functions. When I asked 
for a particular song, it immediately 
flashed up on the screen. 


PRO/FILE has a total capacity of 28,000 
bytes! It is compatible with the Timex 2040 
Printer or any number of Centronic inter- 
faces and printers. 

If you have a special application for 
PRO/FILE, I am sure information on it would 
be found in the users manual. It goes into 
great detail. There is even the program 
listing of the actual program, that can 
be altered to suit particualar tastes. 

PRO/FILE 2068 is an exceptional value 
at $29.95. Its file searching and retrieving 
capabilities are very superior to other 
data bases that I have seen. 

Available from several Timex vendors, 
and the author, Thomas B. Woods, PO Box 64, 
Jefferson, NH 03583. 








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Peanut Butter," Chips 'N Middles Mint,” 


Oatmeal Peanut® or Cup Custard® 


RETAILER: This coupon will be redeemed for face value plus 8¢ han- 
dling if used in accordance with the offer stated hereon. gate ool 
chases to cover coupons submitted for redemption must be provided 
on request. Coupon void if taxed, prohibited or restricted by law, or if 
pr <pcre Cash value 1/20 of 1¢. Valid only in U.S.A. Not assi re 
erable. Mail coupon to: Sunshine Biscuits, Inc., P.O. 
76 ‘Clinton, lowa 52734. 


§25c . 24100 107754 


BILL'S COUPON MAGIC is a program 
written by Bill Erickson of Decatur, GA 
for the T/S 2068. He sells his own program 
through HD SOFTWARE, for $14.95 + $1.50 
for postage. His address is: 1445 Oldfield 
Road, Decatur, GA 30030. 


This program is a lot more than 
it first appeared. Actually, there are 
three differenct functions. The first one 
is a shopping list that you can enter 


your items in categories and include the 
estimated cost of each item. When you are 
finished, it will give you the estimated 
amount of money you need to take with 
you to the store. There is an example 
provided for easy reference. The second 
feature is the coupon manager. It is 
very comprehensive and allows you to store 
up to 99 coupons with a description apiece. 
Then you can add coupons to the file or de- 
lete old expired ones with the search option 
Finally, the third function is an all pur- 


pose list manager for anything that suits 
your fancy. 


All of the lists can be sent to the 


2040 Printer. You can also save all your 
data on tape. The program comes with very 
good documentation. 


COUPON MAGIC is an attempt at a 
useful program. At first, I had visions 
of sitting down and clipping coupons and 
tediously entering each one into the com- 
puter. This seems like it would be a time 
consuming chore. I feel this program has a 
lot more potential being a list manager. 

Mr. Erickson has programmed some 
very nice screen displays for this program, 
and I really liked the "women with shopping 
carts” design. Ali~ in ail thie is a 
nice software package. 


Oo 





/ 2 PROGRAMS 


reviewed by Tom Judd 
Mulino, Oregon 


18 


THE DEALER’S DEN 





THE DEALER'S DEN 


is a 
program written by Timothy Kessler 


card game 
for 
the T/S 2068. It is sold exclusively 
by WMJ DATA SYSTEMS, 4 Butterfly Drive, 
Hauppauge, New York 11788. It sells for 
$19.95 ppd. and there is also a version 
available for the Commodore 64. 

On side one of the cassette tape, 
is the main program THE DEALER'S DEN. 
You play four hands of Poker against 
the dealers one hand. You can throw away 
unwanted cards once for each hand. You 
can also select a bet. At the beginning, 
of the program is a table that shows 
what combination of cards get what value. 

Iam not exaggerating when I _ say 
that THE DEALER'S DEN is’ genuine fun. 
Although, I must admit that I am ae card 
game fanatic. When I started playing this 
one, they couldn't tear me away from the 
screen! 

On side two is 
DRAW POKER. It is 
game, only this time you play only 
hand against the dealers hand. It 
easier to play, but much harder to 
I preferred the first game. 

The graphics for these programs are 
very good. About the best I have seen for 
card games on the Sinclair. There is even 
a little animated card-shuffling sequence 
while the program is loading. I would 
recommend that you do use a quality mon- 
itor, due to the high resolution of some 


called 
first 
one 
is 
win. 


another 
just like the 


game 


of the cards and suits are hard to tell 
apart sometimes. 
If you want to pass some time away 


playing a challenging game of Poker, do 
yourself a favour and pick up a copy of 
THE DEALER'S DEN. 


Y 








THE 





DAMCO/ROTRONICS WAFADRIVE 
REVIEWED 


by Tim Woods 


Colton, 


If you have a very limited work 
area dedicated to your 2068 computer, 


or have a small home business, the following 


product may be of particular interest 
to you. It is the Rotronics Wafadrive 
mass-—storage system from England. I pur- 
chased our unit from Damco’ Enterprises 
(67 Bradley Ct., Fall River, MA, 02720), 
who is the exclusive distributor of the 
Wafadrive here in the U.S. Damco has 
put together a special package that allows 
the Rotronics Wafadrive to operate on the 
T/S 2068, since the system was originally 
designed for the Sinclair ZX Spectrum. 
This package includes all of the "goodies" 
that come with the stock Wafadrive (which 
we will discuss shortly) plus a cartridge- 
style Spectrum emulator, and an adapter 
for the 2068's expansion port. The Spectrum 
and the Timex have different rear-edge 
ports. 

When the Rotronics Wafadrive arrived 
in the mail, I was first struck by 
the size of the box it came in. Very 
small, to say the least. And the unit 
itself is quite compact. It reminds me of 
a Tupperware container with a lid (only 
black). The old saying, "good things 
come in little packages," seems to fit here. 
The Rotronics has not just one drive, 
but two. They are the "stringy floppy" 
type, which use special micro-cartridges 
(or wafers) designed by Entrepo. The 
Wafadrives are custom manufactured by BSR 
(the audio company) for Rotronics. Just 
for your information, A & J Microdrive 
uses the exact same wafers in their 
system for the 2068, but the similarity 
stops there. 

Along with the dual drives, there 
is also a built in Centronics parallel 
printer interface and a R232 serial inter- 
face. The ports for these interfaces 
are at the rear of the unit along with 
a normal Spectrum expansion port, to 
which a Timex 2040 or ZX Printer can 
be attached. On the front of the Rotronics 


Oregon 








are the two Wafadrive slots 
A and B respectively), along with 
LED's: one for power on, 
two designating which drive 
Protruding from the case, 


(drives 
three 
and the other 


is active. 
just below 


the drives, is a very short (about 
four inches) cable with the special 
adapter already connected to the end. 
This is what plugs into the rear of 


the 2068. Placement of the Rotronics 
Wafadrive is limited to directly behind 
the computer. For my installation,it posed 
a slight problem, but shortly corrected 
by moving the monitor off to one side. 

Also in the same little box came two 
wafers. One is blank, and the other 
is a free word processor program from 
Softek, which is cusomized to work with 
the Rotronics. It is supplied with a 40 
page manual, and is fairly comprehensive 
(ie. 64 col., auto word warap/justification, 
page numbering, screen editor, block 
Operations, ect.). This is a nice touch, 
to include a program that can be used 
right away with the system. 

A 68 page manual is provided for the 
Wafadrive. The manual is spiral bound, 
and is clearly written and_ suprisingly 
detailed...giving some examples as it 
covers each concept. 


You may be wondering what a_ system 
like this costs. Especially with all 
of the extras that are included. It 
is only $229.95 from Damco, plus $5.00 
for postage. I also ordered the optional 
Centronics. “abie- “for $12.95, If* you 
are the owner of a Spectrum, there 
is a version of the Wafadrive for $169.95. 
For those of you who already have an EMU-1 
or OMNI emulator, there is a_ sytem 
available for $199.95. 

How does it all stack up? Very 
well indeed. The Wafadrives have their 
own operating system (WOS) in ROM, which 
is similar to disk operating systems 
used by other computers. Extended BASIC 
commands are used and typed in from 
keywords on the 2068 that were originally 
reserved for use with the Sinclair Micro- 
drives. These are CAT, FORMAT, OPEN, 
CLOSED, ect., along with standard commands 
like LOAD, SAVE, MERGE, and VERIFY. 
The symbols "#" and "*" are also used. 

The following is an example of 
a command that is used to ready a 
blank wafer for transferring data: 


FORMAT* "aswafername" 


"a" is used to denote which drive is being 
activated. 

Loading time was fast. Transfer 
baud rate is rated at 18k. I _ timed 
the supplied word processor program, 
and it loaded in 30 seconds. A comparable 
cassette program would take three minutes 
or longer. 





Wafers are available in three sizes 
(or storage capacities): 16k, 64k, 128k. 
They appear to be rugged for their 
tiny size, and have a plastic sliding 
dust cover. A wafer has a continuous 


loop of magnetic tape inside, and operates 
on a principle much like the old eight- 


track audio tapes. The shorter tapes 
will load files much faster than say 
the 128k length. 


Using the Centronics interface was 
a snap. I hooked it up to my TEAL 
model 270 electronic typewriter/daisy 
wheel printer via the optional cable. 
The interface will send standard ASCII 
codes to the printer using LPRINT, LLIST, 
some BASIC lines using "stream" channels, 
or block commands in the supplied word 
processor software. Since this is a "no- 
frill" type interface, it doesn't include 
smart software (like the Aerco interface), 
that allows you to execute graphics screen 
dumps, ect. with dot matrix printers. 
These functions would have to be developed 
by further programming and _ software. 

I didn't give the RS232 interface 
a try, Since I don't have a _ compatible 
peripheral. It should be pointed out 
that it is a bidirectional type, and 
baud rate is selectable. 

Most prospective buyers would probably 
be concerned about cassette software 
compatibility. First of all, take into 
consideration that this is a Spectrum 
system. Secondly, commercial programs 
are usually protected against making 
back-up copies of any kind (cassette 
or wafer). You do have the following 
options: 

1. Make wafer copies of Spectrum 
programs that have the option for making 
back-ups. 

2. Use a "header-reader" type program 
to help you BREAK and SAVE commercial 
cassette software for the Spectrum. 

3. Any Spectrum program that you can 
BREAK and SAVE, may be transferred to wafer. 

4. Some software for the Timex 
can be saved on wafer. This includes 
a few machine code programs, and most 
all of the BASIC programs. For eample, 

I made a wafer copy of programs from 
the "Great Game And Graphics Show" by JRC 
Software. 

You may also make copies from wafer 
to wafer, simply by using the MOVE 
command. Commercial software is being 
developed and sold on Rotronics’ type 
wafers now. Damco has a list and prices 
of several titles that they carry in stock. 

Much could be said about the Rotronics 
Wafadrive. More info than we obviously 
have space in the magazine for. So, 

I will close, leaving you with a few 
thoughts to consider. First, the Rotronics 
is a little faster and lower in price 
than the A & J model 2000 (if you 


20 





were to add an additional drive, printer 
interface, ect.). The Rotronics is about 
half the price of a good disk system 
with only a single drive, but not nearly 
as fast as floppy disks. It is about 
the same price as a complete Sinclair 
Microdrive system, but the Rotronics 
comes with more features like the built 

in Centronics interface and free word 
processor. Also take into consideration 
that you also receive Spectrum emulation 
and a Spectrum expansion port...this 





will open a whole new world of information 
for the T/S 2068. 


Over all, the features that I 
liked best were the units small (all- 
in-one) size, and the ease in which 


the Rotronics filed and retrieved data. 
The price should also be within reach of 
most Timex users budgets. 

Good work Rotronics and Damco. 


© 







Good news for T/S users who have 
installed the ROMSWITCH or a Spectrum 


ROM in their computers. They can now 
use the Sinclair ZX Microdrives...without 
the added cost of purchasing an. emulator. 
The method is a brand new Microdrive 
Adapter available from English Micro 
Connection (15 Kilburn Ct., Newport, 
RI 02840), for only $35 ppd. The Adapter 
is a standard "twister" type Spectrum 
expansion port board, with the addition 
of a special circuit that includes a 74LS10 
IC, a diode, and a resistor. The circuit 
was designed by John Oliger, and was 
incorporated on the board by Doug Dewey, 
who is the manufacturer of the Microdrive 
Adapter. Now the ROMSWITCH, Spectrum 
ROM's and OMNI emulators can operate 
the Interface One, Microdrives, and other 
English peripherals on their 2068, without 
a hitch! The English Micro Connection 
also carries a selection of Sinclair 
merchandise including the Microdrives 
and the Spectrum Plus computer. Write 
for details. 


21 


TS 2068 / SPECTRUM -WARES 





The Software Supermarket in London, 
England has just recently changed their 
name to SPEEDYSOFT. They do a large 
overseas mail order business, and accept 
American credit card numbers. Their new- 
est software catalog features 24 Spectrum 
programs newly released. For details, 
write to: Speedysoft, 87 Howard's Lane, 
London SW15 6NU England. 

Time Designs Magazine will be re- 
viewing some more Spectrum programs in 
our next issue. Since there is’ such 
a wide variety of titles available from 
England, reading a report from a trusted 
reviewer before purchasing, makes good 
sense. After all, money doesn't grow 
on trees. As of this writing the American 
dollar compared to the British pound 
was $1.22 (a slight increase). 


WODeennenaanaenenacennenansnennaccaannensanincnennagncnaceanennconesoneonongncgcedninnannnaoaanannangnenneesasuncnacesncaansnegaenneacnangenegaauOudcenUeUOCDOndacaanedcanuccguecasennouneneeggngnuecounacgneduananonangnsnangnagaaogunsacegnnsgaonaenacenccgnnoncoancuccoccoonacse 





FDO-68 INTERFACE 


SYSTEM COMPONENTS 
Controls 1-4 drives 


$199 FD-68 Interface 


$99 Drive 40T/DS/DD 
5S inch/400 kilobyte 


3-8 inch Shugart Comp. 


Single or double sided $99 Dual Drive Cabinet | 


and 5 emp Pwr Pack 
40/80 tracks per side 


$3 Per item S&H 
Texas Residents add 5% 
VISA/MasterCasrd add 5% 


64K RAM & 8K ROM 
on board 





RGB monitor output 


Whebas “Wiloels RUE} Gwin 


Enhance the performance of your TS 2068 with the AERCO Disc system. 
All of the speed and convienience of a full-out floppy disc system. Load 
programs at an incredibly fast 250,000 bits/sec. Fully compatible with all 
Shugart type drives, including those already in use with the AERCO 1000 
Disc System. The 64K of on-board RAM can be used as a second bank of 
system memory or a soon to be released full-blown CP/M System (version 
2.2). The power supply is a S-amp high efficiency switcher. We offer a 
variety of other hardware for all models of SINCLAIR-TIMEX. 


TS/2068 TS/19000 
Floppy Dise Interface =<; een. Pre ees ek ee $179 
BSE VCS a ic cc adnan eadk VTE) 32992 boas ee Sh oe from 99 
Power Suppgnes... -— 2. Sy oSwlhe ae. es eee re Ba a a 99 
Centronics Printer 17G—-— fs ee... a ee etree er, ain, eae 99 
DUG) RS2 252 ee IP oes os ces os Oe kes t oe  . . ., Seiden 99 
Direct Video-Mad (DV-1 de cs ceesn ese. ee es 7) 8 gen 4 ae ha ae Pa 15 
CT TREGe TO-Reinter SS ee oc ne ee es Pe ee ts nc a lee ee ae 375 
ROM Bd. with: Auto Disc Boot ...- 0... cee tess. ets ee a ae 59 
RGB Cable (specify monitor)... .... ...... Aten Se es a n/o 
Lec lie¥. cee De faces oe ee ME, cee COMING SOON... ch. ees we n/a 
J~E Box 16093 Austin TX 78760 
Wn 


Ph (512) 451-5874 
BOME ELELTRIC BEBET CB 








THE SHOPPING MART 


@eeeeeeseoesdse~eaeenonoeneoonaeoneoeeeeaeeee eee 8d @ @ 
PLEASE TELL OUR ADVERTISERS THAT YOU SAW THEIR AD IN TIME DESIGNS! 





oo0o0o0 0000000 


¢ ADVERTISERS 


oooo0o0o 00000 


Reserve your spot in our 
Shopping Mart Section! 


Our low ad rates 
will fit your budget. 


GET SERIOUS WITH YOUR MODEM! 


MINI XMOD 1.5 allows your Westridge/Byte- 
Back modem to up/download Timex programs 
to any XModem Protocol BBS. Fully documented 
with easy to follow instructions written for the 
layman. 16/64K versions included. Ideal for 
Storage in Hunter Board. Produced on high 
quality cassette. For ZX81, TS1000, TS1500. 
specify Westridge or Byte-Back Version. Only 
$20.00. 


Write or call to reserve 
Space in our next issue. 
Our free pamphlet contains 
rate card and deadline 
schedule. 


Phone (503) 824-2658 


Write to: 
Time Designs Magazine 
29722 Hult Rd. 
Colton, OR 97017 


WEYMIL Corp., Box 5904, Bellingham, WA 
98227-5904 


I ALAS 
DeSigMS 


MAGAZINE 





SUBSCRIBE TODAY 


VOL.1 80.2 $3.00 
es. 


Mah —FEB. 
1985 oO 


cre 
DeSigns 


Pot Tur Ts 700s asd ail GTMEA Tames ear omc Lats ComeTEaS 





Clip coupon or send same information on a separate piece of paper. Include 
a check or money order for the proper amount (U.S. funds). Mail to: 


TIME DESIGNS MAGAZINE COMPANY 
29722 Hult Rd.e Colton, Oregon 97017 


ONE YEAR SUBSCRIPTION Name 


ONLY *** $15 *** Address 





SIX BI-MONTHLY ISSUES City, State Zip 


© ee Link 


INTERFACE CARD 


MFG.by: CiirrORD & ASSOCIATES 


Z-LINK simply plugs in the back of 
your T/S 2068. When used with a 
Spectrum emulator (EMU-1 or OMNI) 
it allows you to run the Sinclair 
Microdrives, light pens, voice 
boxes...any ZX Spectrum peripheral! 
See review in March/April '85 issue 
of Time Designs Magazine. 


Z-LINK fully assembled and tested $47 ppd. 
Z-LINK kit with all parts $37 ppd. 
Z-LINK bare board w/documentation $17 ppd. 


SINCLAIR ACCESSORIES LTD. 
29703 S. Salo Rd. Mulino, OR 97042 


























Ss |U JM 


TS 1000 TS 2068 


TS 1500 





a” Sinclair/Timex 
User’s Magazine 


Hardware Projects ¢ Hardware Reviews 
Software Reviews e Product Comparisons 
Published Monthly ¢ Back Issues Available 

Free Personal Ads for Subscribers 


SUM Magazine is aimed at Sinclair and Timex users who 
want to learn what is available for their computers, how to 
do things no one else is doing, and what is just over the 
horizon. Examples of recent articles include: Building 
your own Spectrum Emulator; an extensive series of | 
reviews on word processors for the 2068; adding an RGB 
monitor to your 2068; and a series on repairing your 
TS1000 and ZX81 computers. 





SUM Magazine invites articles, reviews, and projects for 
possible publication. We pay for articles published! 
Hardware and software producers are invited to submit 
their products for review. 






Annual Subscription .................. 0. cee ee eee 
Free Sample Copy on Request 






SUM Magazine 
3224 NW 30 Avenue — Gainesville, Florida 32605 














Cc oOo UU FF oO MN 
ai A G Ir Cc 
@ 1984 Bill Erickson 
T/S 2068 

A coupon file that holds 190 coupon descriptions with 
up te 99 coupons in each, A shopping list section that 
is worth the price all by its self, And a storage list 
that holds 100 items and their locations. — 

While the other two files are great, the shopping 
list is the one that gets most of the work done. Like 
the other two, it has on screen edit, but it also will 
check up on the cther files. It wil! tell you approx. 
how much manev to take when vou go to the store, then 
print cut a shopping list on your 2040 that can hold 
up to 109 items with notation to tell vou if vou have 
a coupon for an item. It also makes a notation if you 
have the item stored someplace, + it gives vou a place 
dy each item te check off as you put it in the cart, 

User info on-screen at all times for gasy operation 
and a great graphic desclay for eye appeal, 


SEND check or monev order for $14,958 + $1.50 P&H 
To: William Erickson 
1445 Oldfield Fd. 
Decatur, GA 20030 


USEFUL FUN SOs +o Use 


THE DEALER’S DEN 


This software package contains two 
programs: 


ae 1. THE DEALER'S DEN—play four 
hands of Draw Poker against the 
dealer's one hand. 


2. DRAW POKER—just like the ar- 
cade game at your local nightclub. 


Commodore 64 
(cass.) $24.95ppd. 


Commodore 64 
(disk) $29.95ppd. 


Timex/ Sinclair 2068 
$19.95ppd. 


lf you like Poker 
you will love THE 
DEALER’S DEN! 


Send for our catalog of over 50 programs for 
the Commodore 64 and the Timex/ Sinclair line 


of computers. 


cy 


WMJ DATA SYSTEMS 
4 Butterfly Drive 
Hauppauge, NY 11788 








BANK SWITCHING OFERATING SYSTEM 
FoR THE 2xGi/7TS1000 


or USE THE 48 TO 64K BLOCK OF MEMORY FOR BASIC PROGRAMS nee 
eH CREATE A "VIRTUAL MEMORY" SYSTEM xeH 
ane AS DESCRIBED IN T S HORIZONS (March 1984 through March 1985) HHH 
+4% USE WITH A 64K RAM PACK Hex 
ane OR BUILD A BANK-SWITCHED SYSTEM WITH LIMITLESS MEMORY He 

|! 1 
INTRODUCTION | . 







The system is configured as shown in the diagram: 


8 - 10K 
‘ RAMTOP 
BSOS operating system (49106) % 
0 - 8K | 8 - 16K 16 - 32K 32 - 48K 






; ‘di 04 bytes 
Commands include: BSOS variables 
49106 - 49151 
SsAaveE Save a file from the BASIC system to the bank 
LOAD Load a file back from the bank into the BASIC system 
rFuURGE Purge a file from the bank 
RECLAIM” Clear variables or a program (or part) from the BASIC system 
rFAck Repack the contents of the bank 
BANK Change from one bank to another 
rRoOoOMmM Determine space available in a bank 
QUIT Return to Sinclair BASIC system BANK 1 DIRECTORY 
SIESSECERSESZELSRSCESRSIEAESLESSFLZELR 
NO. NAME ~EXT ADDR SIZE 
A sample directory listing the contents of A: DIRECTORY .DIR:49152:00704: 
a bank is shown on the right. Some of the B: SAVEROUTINE. PRG: 49856:00134; 
routines in BSOS can be called from within C: DEC-TO-HEX .PRG:49990:00308: 
a BASIC program to create a virtual memory D: HEX-TO-DEC .PRG:50298:00134; 
system -—- so you can have a program larger E: CONVERSION .PRG:50432:00750: 
than 16K or a huge data file. A virtual Fy 
memory system allows the program to change 6: 
while it is running. Hy 
I: 
The program on the tape will transfer the di 
operating system to the 8-10K block; reset Ky 
RAMTOP to 491063 and load a directory (and Li 
any routines already in the bank). The Mt 
tape is available for $10 ppd from: N: 
0: 
HUNTER SSRSSSBSRRSSSERESKESSSSSESESSSSXSEL2e 
1650 FOREST HILLS DRIVE 1:SAVE 3:PURGE S:PACK 7:ROOM 


OKEMOS, MICHIGAN 4886044 


2:LOAD 4:RECLAIM 6:BANK 8: QUIT 











TAi's ts The odh 
receive For TT 


order 
JRO Le sety 
SOFTWARE 


software offered here is of 
the highest quality and your 
Satisfaction is guaranteed. 


Even if you do mot plan 
Wig PEO ees indicate what type 
! ucts you would like JRC 
SOFTUARE to market in the 
future. In addition JRC would 
Ser ect ats information on other 
> USErE. QGrouRe. afd com 
Stores in your area. ener 


ese Je aed 


to 


Ad yew wile 





our 
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5150071088 ommers 
Look mhat you get:: 
Secret ROM routine 
Super fn plot 
Four 2k action games 
Touch Type teacher 
Extensions to BASIC 
Beep and phasor sound effect 
Printer upperslomer case 
Pranter hi-res graphics 
Multiple programs in 16/642 
16k oscialliscope in reat-timne 
(... INCREDIBLE GRAPHICS) 
Tape name reader 
Tape unlocker 
16k tape utility 
Powerful 168 assembler 
16-808 cpl text editor (...THREE 
VERS IONS) 
and bonus programs! 


Vould you believe that most 
of the above uses Machine code? 
ALL on Quality TDK tape for 
$24 .957 Caos about the normat 
Price for a software Cartridge 
or tmo cassettes.) 

Velcopme to JRC SOFTUARE. 
There is S50 much On this tape 
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Products have an unconditional 
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you risk absolutely nothing. 


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PO BOX 446 

SCOTTSBURG, IN 47176 

(812-752-6871 & -5106) 
SUPERTAPE now comes mith 45 pro- 
grams. 


New// BOTH OF THESE 2 PROGRAMS BELOW ON ONE TAPE FOR $244.95: 


2068 INTEGER BASIC COMPILER 


The COMPILER takes easy to use BASKC 

and converts it to 105 times faster 
machine code! Now your programs can 
have the professional speed unavail- 
able in ordinary BASIC. The compiler 
uses simple integer expression evalua- 
tion, multiple statements per line, plus 
PRINT, CLS, PLOT, INKEY$, CODE, SOUND, 
RUN, STOP, PAUSE, INVERSE, OVER, BRIGHT, 
FLASH, USR, TAB, AT, OR, AND,<, *> REM, 
BORDER, INK, PAPER, LET, GOTO, GOSUB, 


IF, THEN, RETURN, POKE, OUT, RAND, OMIZE, 


*,/, -, ®, PEEK, IN, and RND. 


Make a quantum leap in your processing 
power with JRC BASIC COMPILER. 


SFSFFTEFPFTFTFIFFABFFFRTIFFFF374 
FESERFEESESSINC TIPS EFFF2FF5833% 
SFFFREFFTFFFSELFTFIFSFTSFSIIIIFZIFIE 


TAPE UNLOCKER for the 2068: 


MERGE “". This easily Stops 
automatic run. If you find 
yourself in an input that you 


Can’t get out of then type: 
USR 158002 or 


and 





The 280 ASSEMBLER uses @ full two 
passes, so the conveniencesyou nor- 
mally associate with a good assembler 
are all here. There is full use of 
LABELS so you never have to worry 
about jump addresses or where & 

piece of data might be. The assem- 
bler can also handle simple expression 
evaluation which takes work off the 
programmer. Although there are many 
assemblers available for the 2068, 
very few are as easy to use a8 the 
JRC 280 ASSEMBLER. Entering and edit- 
ing you mnemonics are easy since there 
are multiple statements per line and 
comments can be put anywhere. 


Have you noticed that mhile in 
the command mode you can type 
commands after “LOAD“7 That may 
you can have the computer BEEP, 
SAVE OR LORD SOMETHING ELSE 


after the first toad. 


JRC SOFTWARE 


Goo oS 


P.O. Box 448 Vpiue 
Scott Indiana 47170 
id sburs 752-6071 as for 





‘. ##* EASY EDITOR **# 
(.for the TIMEX COLOR COMPUTER.) 


Up till now, JRC SOFTWARE, has disliked 
text editors written in BASIC. Since 
they use string handling functions, you 
get an annoying delay between each key- 
stroke. Letters get missed. These 
editors also greatly limit how much of 
your memory can be dedicated to text. 

So typing long papers may be impossible. 


The JRC SOFTWARE EASY EDITOR, however, 
ig based on a completely different 
concept than other editors. It is 
probably the fastest, most efficient, 
and easiest text editing system ever 
written in BASIC. It also has some 
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LORDS OF MIDNIGHT ee ist in a TRILOGY voas8l2e95 digo on Raquiras OV lamp power ore like TS 3600 (nak included) 
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ROBBER from QUICKSILVA 
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"ROBBER". Your objective 
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LOST from QUICKSILVA 

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SOFTWARE 


THE ISLAND 

jou are the fortunate 
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VELNOKS LAIR from QUICKSILVA 

Lose yourself in the Goblin 
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Spectrum Emulation 


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The Hobbit 












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The Lords of Midnight ........... 


Doomdark’s Revenge ............. 


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DC power supply. (We can supply the 9 volt power supply for $8.95) 


SPECTRUM MICRODRIVE EXPANSION og 3.3 43” Sas ee $129.95* ppd. 
The Expansion System consists of an Interface | (with RS-232 port), a Sinclair Microdrive unit and a 
Cartridge Pack. The four cartridges contain Tasword II word processor, Masterfile filing system, an 
Introduction, a Games cartridge, and a blank cartridge. 


NEW! TIMEX 2068 MICRODRIVE ADAPTER....................... $35.00 ppd. 


Now, any Timex 2068 owner with Emu I Emulator, Romswitch, or Spectrum Rom installed can operate the 
Spectrum Microdrive Expansion System on his/her computer. 






SPECTRUM SOFTWARE 
BUSINESS/ UTILITIES 
$12.95* White Lightning (Graphics) ....... $24.95* 
$10.00* Hisofe“C” Languaye=............. $32.50* 
$12.95* Hisoft “Pascal” Language ......... $32.50* 
$12.95* ee Fe ae en oe ee Oe $62.50* 
$12.95* OCP +80 Finance Manager ....... $24.95* 
$12.95* OCP +80 Stock Manager ......... $24.95* 
$12.95* OCP +80 Address Manager ....... $24.95* 
$18.95* Mega-Bastes oso ee ec oe, $12.95* 


*Due to fluctuations in the International Currency Market, our prices are subject to change without notice. 
Hardware items are shipped prepaid in the U.S. — Add $1.00 per software title for shipping and handling. 


As we are agents, not importers, for English companies, all hardware items are shipped prepaid to 
you direct from England. All software is shipped from our offices in the U.S. Payment must be made 
by check or money order.