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INTERDICTOR PILOT - THE ULTIMATE SPACE GAME the background idea of Interdictor Pilot is not novel. The player is flying a space fighter called Interdictor Mark II. After taking off from home starbase he has to traverse space at light speed until such time as he meets an opponent. When this occurs he is automatically taken out of light speed, does battle and, if successful, re-enters light speed until the next encounter. After a certain distance through space - depending upon his rank at the time - he will arrive at the first starbase, dock and report in, saving a record of his achievements, or otherwise, to disk or tape. If all goes well and he is sufficiently skilled he will progress through the ranks of Sub-Lieutenant, Lieutenant, Lieutenant-Commander, Commander, Captain and finally, Commodore. So far as is known, no-one has achieved the latter rank, including the author. The higher the rank, the greater the length of time during transits between starbases and the more frequent the contacts with the enemy. The above is a not uncommon, even perhaps rather mundane, description of a space flying/fighting game. What makes Interdictor Pilot the fantastically interesting and fascinating pastime that it is, is the way in which the author has built on the basic theme. For instance, for a TRS-80, we think that the graphics are a little short of miraculous. Actually this is probably not too surprising because Interdictor Pilot is written in machine code and occupies the full 16K. As an example of the graphics, the illustration shows the screen through which the pilot plays the game. To describe this in detail is beyond the scope of this sales literature, but briefly, the large section in the middle entitled 'Vision Screen' is the pilot's view into space. When leaving or arriving at a starbase a three dimensional tunnel appears, through which the pilot must navigate. When leaving he is, of course, taking off from zero velocity, and is therefore nicely aligned, hence a few touches of the controls here and there will keep him on the straight and level out of the tunnel. When arriving at a starbase, however, the position is rather drastically changed. The opening of the tunnel is displayed and it is for him to manoeuvre himself so that he not only flies into it, but also along it. In view of the fact that the aircraft is proceeding at a very fast speed, this small part of the game is no light achievement on its own. Normally, however, as we have said, the vision out through the screen is of space and this is really most amazingly realistic. The heavens seem to proceed across the screen almost exactly as one would imagine in real life. For instance, if, since last either leaving a starbase or coming out of light speed, you have manoeuvred the aircraft and then seek to re-enter light speed after an encounter, however much you have manoeuvred, a scanning device in the fighter will automatically re-align you with the next starbase. The effect is, you just sit there and watch the heavens pass by. Another amazing graphic realisation is that of an approaching enemy. Up in the left hand corner of the illustration you will see an area entitled 'Ranging'. This is split up into eight compartments. When you first come out of light speed the graphic area next to the figure 8 will be illuminated. As you get closer to the enemy, the succeeding areas will light up. This ranging instrument therefore, on its own, tells you how far away the enemy is, but the visual effect of him approaching you is quite astounding. He starts off as what appears to be a stationary star. As you increase speed to approach him and, as the ranging indicators decrease from 8 to 1, so he gets larger until eventually you can make out the details of the craft and recognise it. If you are approaching him and do not collide with him, then he or you will swerve to one side and the effect as he passes over, under or to the side of you is extremely impressive. You almost want to duck. One of the many alternatives open to you when you play the game is what is called the Simulation mode. This is strictly a practice mode. You have to take off from a starbase in the normal way, but once in light speed you can choose the type of aircraft to fight, or indeed you can also choose to practise docking with a starbase. Again, this simulation mode is not too astounding a feature in a game such as this, many of them have them, but what is amazing is that the author has included a command whereby the enemy may be 'paralysed'. In this mode he is not allowed to move or fight. You can literally fly up to him, circle round, see him from any angle and then fly away again. We find this to be quite uncanny in its realism. Probably the illustration does not give a fair representation of the screen and instrument panel. The various areas marked are illuminated when in use. For instance, on the right hand side of the illustration, you will see a section entitled 'Transponder'. If this is switched off, then that area next to the word 'Off' will be lit. If it is on Standby, then that section will be lit and so on. This is a particularly fast way of assimilating information. The scenario for Interdictor Pilot is as follows: It is now 5 years since 11 battlestations of the Jahdra-Gallan Alliance first appeared in Federation airspace, thus violating the terms and conditions of the Limhof Concord. Early diplomatic efforts on the part of the Federation to avoid open confrontation were frustrated when the 9 members of our Representatives Commission failed to return from their fifth negotiations visit to the Alliance mothership, Kontarkohsz'. Fifty Interdictor Mark I craft were despatched from the nearest Federation starbase on a punitive mission against 'Kontarkohsz' - none returned. Communications received from the last few surviving Interdictors, as they tried to make good their escape, indicated that the defences of the formidable Jahdra-Gallan battlestations were impenetrable to our craft. They remain so to this day. The Federation has, therefore, adopted a policy of attacking their patrol ships and drones in outer space - a task to which the Interdictor Mark I was admirably suited. However, our losses in the early stages of the conflict remained high, in part because the excellent enemy fast patrol craft, the Jahdran Aggressor, was a more sophisticated copy of our own Interdictor Mark I, and also because our own craft would often stray accidentally into battlestation airspace. Such unfortunates were destroyed without exception. Our performance in the conflict was dramatically improved with the introduction last year of the new Interdictor Mark II craft - our fleet is now made up entirely of these craft. As well as being faster and more powerful, it has many new systems, including automatic avoidance of battlestation airspace while at light speed cruise. As a newly commissioned Interdictor Pilot, you will therefore never experience Battlestation airspace. Consider yourself very fortunate! You will, however, encounter the Jahdran Aggressor, Gallanic Cruiser and Meson Torpedo drone of the Jahdra-Gallan Alliance, as well as fellow Interdictor Mark II craft and Federation Meson Torpedo drones. It is hoped that if we can sufficiently deplete their vast fleet of craft, their battlestations will be forced to concede an untenable position and withdraw. Interdictor Pilot comes with what are effectively two separate manuals. The first is a short page or so prepared by Molimex on how the program is loaded and the idiosyncrasies of it when used on Tandy Model I and III machines. This section is completed with instructions for a very quick demonstration flight. The main part of the manual is a fully illustrated document written in 'real time'. It assumes that you are a novice pilot that has just been given your first Interdictor Mark II and it takes you through the craft description of both the Interdictor Mark I and the newer Mark II, plus the theory and practice of the deflectors, propulsion, stabilisers, Saturn array, Lewis array, weapon systems, cockpit display and light speed drive. The next section of the manual goes through, in great detail, the cockpit display and this is followed by descriptions of the controls and their operation. Craft types and Sortie format are described, followed by a section of combat advice, a description of the starbases and finally the use of the simulator. A Sortie, incidentally, is made up of the launch, the transit, which includes the light speed jumps and encounters with the enemy, and finally the recovery at starbase. The Sortie format mentioned above describes these sectors in full. What more can you say? Interdictor Pilot is written by a serving RAF navigator and in our estimation sets new standards for micro-computer game software.

Calculate answers from any 3 of 4 variables in mortgages, annuities, regular savings, loans, and a savings deposit. Also, bond yield to maturity. Amortization optional. Video-printer. Limited guarantee.<br>Price: $100.00 disk, $100.00 cassette, $100.00 source

LIBRARY 100 The LIBRARY 100 from TBS is without doubt the greatest software bargain ever. Released in November 1978, it has sold thousands in 44 countries. Written for the TRS-80, LIBRARY 100 contains 100 programs on five tapes. Most of the programs can be run on a 4K, Level II computer. Designed to be a basic computer library, it provides a series of programs over a broad range of topics. All programs but one are written in BASIC and can easily be modified to suit your own purposes. 'The program mix is eclectric, interesting, and curious If I had a Level II TRS-80 and one or more grade-school children, or if I were a hardcore software collector, or if I had little software and wanted to get a lot of it with a minimum of bother, I'd buy the Library 100.' Stephen Gray, Creative Computing, April, 1979. ' a basic computer library for the hobbyist, parent or businessman.' Kilobaud Microcomputing, December 1978. The programs are spread over five general categories; Finance, Education, Graphics, Home and Games. As an added bonus, the LIBRARY 100 contains Tiny PILOT, a condensed version of the high level language primarily used in education. It is perfect for teachers, parents, students and sales trainees. Using only six commands, even a child could be programming in minutes. The other programs are as follows: FINANCE: Present Value of Future Sum, Simple Interest for Days, Future Value of Present Sum, Amortization Schedule, Interest Rate-Compound Interest, Interest Rate-Installment Loan, Days Between Dates, Term of Installment Loan, Present Value of Series of Payments, Real Estate Investment Analysis, Nominal-Effective Interest, Internal Rate of Return, Future Value, of Regular Deposits, Regular Deposits for Future Value, Depreciation (Amount, Rate, Salvage Value, Schedule), Bond Present Value, Bond Yield to Maturity, Sale-Cost-Margin-Day of Week, Moving ad. EDUCATION: Multiplication & Division, Addition, Subtraction, Fraction & Decimal, States & Capitals, States and Order of Entry, States and Date of Entry, States and Abbreviations, Inventors and Inventions, World Capitals & Countries, Urban Areas and Population, Authors & Books, Presidents and Order, States and Largest City, Base Numbers. GRAPHICS: Front Cover, Wierd, Rat Race, Random Ad, Fireside, Left-Right Ad, Blocks, Herring, Launch, Blinker, Snoopy, Snow, Step Ad, Step Ad Two, Graphic Words, War Games. HOME: Bartender, Nutrition, Conversion, Perpetual Calendar, Base Conversion, Calculator, Vacation Check-off List, Telecode, Message Board, Night Check-off List, Expense Account, Babysitter, Drunkometer, Remember, Christmas List, Mileage. GAMES: Jumble, Search, Memory Quiz Letters, Sting Ray, Russian Roulette, Wheel of Fortune, Towers, Decision, Memory Quiz Numbers, Doomsday, Star Trek, Sketch, Flipper, Life, Fifteen, Speedy, Count, Road Race, Stars, Odd One, Spy Ship, Horse Race, Scissors, Craps, Star Blazer, Tiger Shark, Unjumble, Mind Reader, Roach Race, Jumble 2, Gypsy. The price for the LIBRARY 100 is only $49.50. That's less than $.50 per program. Join the thousands of users who are already enjoying this exceptional software package. Only from TBS. (We are currently working on a Library for the APPLE.) TBS has other great software for your TRS-80. CHECKBOOK II, INFO SYSTEM, & EXERCISER are general applications. BASIC TOOLKIT, SYSTEM DOCTOR & TERMINAL CONTROL are systems utilities. BUSINESS MAIL LIST, DATA MANAGER, CHECK REGISTER ACCOUNTING SYSTEM & ANALYSIS PAD are strong applications for business. TBS also has DISK HEAD CLEANERS for TRS-80 and APPLE and GRAN MASTER DISKETTES, the best on the market. TBS is YOUR COMPANY, and to you we pledge to produce quality software at a price you can afford. The above products are available NOW at Computer Stores and Associate Radio Shack Stores nationwide or directly through us. For more information please contact us at the numbers below. Paramount Pictures, Corporation. THE BOTTOM SHELF, INC. (404) 296-2003 751 DeKalb Ind. Way Decatur, GA 30033

LIBRARY 100 The LIBRARY 100 from TBS is without doubt the greatest software bargain ever. Released in November 1978, it has sold thousands in 44 countries. Written for the TRS-80, LIBRARY 100 contains 100 programs on five tapes. Most of the programs can be run on a 4K, Level II computer. Designed to be a basic computer library, it provides a series of programs over a broad range of topics. All programs but one are written in BASIC and can easily be modified to suit your own purposes. 'The program mix is eclectric, interesting, and curious If I had a Level II TRS-80 and one or more grade-school children, or if I were a hardcore software collector, or if I had little software and wanted to get a lot of it with a minimum of bother, I'd buy the Library 100.' Stephen Gray, Creative Computing, April, 1979. ' a basic computer library for the hobbyist, parent or businessman.' Kilobaud Microcomputing, December 1978. The programs are spread over five general categories; Finance, Education, Graphics, Home and Games. As an added bonus, the LIBRARY 100 contains Tiny PILOT, a condensed version of the high level language primarily used in education. It is perfect for teachers, parents, students and sales trainees. Using only six commands, even a child could be programming in minutes. The other programs are as follows: FINANCE: Present Value of Future Sum, Simple Interest for Days, Future Value of Present Sum, Amortization Schedule, Interest Rate-Compound Interest, Interest Rate-Installment Loan, Days Between Dates, Term of Installment Loan, Present Value of Series of Payments, Real Estate Investment Analysis, Nominal-Effective Interest, Internal Rate of Return, Future Value, of Regular Deposits, Regular Deposits for Future Value, Depreciation (Amount, Rate, Salvage Value, Schedule), Bond Present Value, Bond Yield to Maturity, Sale-Cost-Margin-Day of Week, Moving ad. EDUCATION: Multiplication & Division, Addition, Subtraction, Fraction & Decimal, States & Capitals, States and Order of Entry, States and Date of Entry, States and Abbreviations, Inventors and Inventions, World Capitals & Countries, Urban Areas and Population, Authors & Books, Presidents and Order, States and Largest City, Base Numbers. GRAPHICS: Front Cover, Wierd, Rat Race, Random Ad, Fireside, Left-Right Ad, Blocks, Herring, Launch, Blinker, Snoopy, Snow, Step Ad, Step Ad Two, Graphic Words, War Games. HOME: Bartender, Nutrition, Conversion, Perpetual Calendar, Base Conversion, Calculator, Vacation Check-off List, Telecode, Message Board, Night Check-off List, Expense Account, Babysitter, Drunkometer, Remember, Christmas List, Mileage. GAMES: Jumble, Search, Memory Quiz Letters, Sting Ray, Russian Roulette, Wheel of Fortune, Towers, Decision, Memory Quiz Numbers, Doomsday, Star Trek, Sketch, Flipper, Life, Fifteen, Speedy, Count, Road Race, Stars, Odd One, Spy Ship, Horse Race, Scissors, Craps, Star Blazer, Tiger Shark, Unjumble, Mind Reader, Roach Race, Jumble 2, Gypsy. The price for the LIBRARY 100 is only $49.50. That's less than $.50 per program. Join the thousands of users who are already enjoying this exceptional software package. Only from TBS. (We are currently working on a Library for the APPLE.) TBS has other great software for your TRS-80. CHECKBOOK II, INFO SYSTEM, & EXERCISER are general applications. BASIC TOOLKIT, SYSTEM DOCTOR & TERMINAL CONTROL are systems utilities. BUSINESS MAIL LIST, DATA MANAGER, CHECK REGISTER ACCOUNTING SYSTEM & ANALYSIS PAD are strong applications for business. TBS also has DISK HEAD CLEANERS for TRS-80 and APPLE and GRAN MASTER DISKETTES, the best on the market. TBS is YOUR COMPANY, and to you we pledge to produce quality software at a price you can afford. The above products are available NOW at Computer Stores and Associate Radio Shack Stores nationwide or directly through us. For more information please contact us at the numbers below. Paramount Pictures, Corporation. THE BOTTOM SHELF, INC. (404) 296-2003 751 DeKalb Ind. Way Decatur, GA 30033

How's your love life? INTERLUDE #99 THE ULTIMATE EXPERIENCE A little dull around the edges? Routine? Predictable? Boring? Maybe all it needs is a little Interlude. Interlude is the most stimulating computer game ever conceived. It combines a computer interview, an innovative programming concept, and a one-of-a-kind manual to turn your love life into exciting, adventurous, delicious fun! Interlude is: romantic playful outrageous a fantasy. Interlude is: A Bed of Roses (Inter- lude #1) Mata Hari (Interlude #49) The Chase (Interlude #7) Rodeo! (Interlude #71) The King and I (Interlude #60) Some Enchanted Evening (Interlude #84) Caveman Caper (Interlude #82) From Here to Ecstasy (Interlude No. 30) Satin Dreams (Interlude #72). More than 100 Interludes are included in the program. Most are described in detail in the accompanying manual, but several surprise Interludes are buried in the program awaiting that very special time when your interview says you're ready. (When you learn secret Interlude #99, your love life may never again be the same!) Interlude can give you experiences you'll never forget. Are you ready for it? Interlude The Ultimate Experience. INTERLUDE, 10428 Westpark, Houston, Texas 77042. I'm really ready. Send my Interlude today. Apple II (16K) Cassette ($16.95) Diskette ($19.95) Diskette-Pascal or DOS 3.3 ($19.95) Add $1.50 for shipping and handling MASTERCARD Account No. TRS-80 (Level II-16K) Cassette ($16.95) Diskette ($19.95) Diskette ($19.95) Diskette-Pascal or DOS 3.3 ($19.95) VISA Poster 20 inchx24 inch reproduction of this ad without ad copy ($4.95-includes shipping charges) All charge customers must sign here. Expiration date Available for immediate shipment. Please enclose your check payable to INTERLUDE or complete the charge information: MasterCard Bank Code CHARGE CUSTOMERS: Order by phone toll-free! 1-800-231-5768 Ext. 306 (Texas: 1-800-392-2348 Ext. 306) Name Address City State Zip Apple II is a registered trademark of Apple Computers, Inc. , a Tandy Co. 287<br><br>Sourcebook:<br>An adult computer program that interviews two persons about their romantic preferences and then selects an appropriate interlude or scenario. Accompanied by a manual containing 106 interludes. Mach LANG: 1.50S&H<br>Price: $19.95 disk, $16.95 cassette

How's your love life? INTERLUDE #99 THE ULTIMATE EXPERIENCE A little dull around the edges? Routine? Predictable? Boring? Maybe all it needs is a little Interlude. Interlude is the most stimulating computer game ever conceived. It combines a computer interview, an innovative programming concept, and a one-of-a-kind manual to turn your love life into exciting, adventurous, delicious fun! Interlude is: romantic playful outrageous a fantasy. Interlude is: A Bed of Roses (Inter- lude #1) Mata Hari (Interlude #49) The Chase (Interlude #7) Rodeo! (Interlude #71) The King and I (Interlude #60) Some Enchanted Evening (Interlude #84) Caveman Caper (Interlude #82) From Here to Ecstasy (Interlude No. 30) Satin Dreams (Interlude #72). More than 100 Interludes are included in the program. Most are described in detail in the accompanying manual, but several surprise Interludes are buried in the program awaiting that very special time when your interview says you're ready. (When you learn secret Interlude #99, your love life may never again be the same!) Interlude can give you experiences you'll never forget. Are you ready for it? Interlude The Ultimate Experience. INTERLUDE, 10428 Westpark, Houston, Texas 77042. I'm really ready. Send my Interlude today. Apple II (16K) Cassette ($16.95) Diskette ($19.95) Diskette-Pascal or DOS 3.3 ($19.95) Add $1.50 for shipping and handling MASTERCARD Account No. TRS-80 (Level II-16K) Cassette ($16.95) Diskette ($19.95) Diskette ($19.95) Diskette-Pascal or DOS 3.3 ($19.95) VISA Poster 20 inchx24 inch reproduction of this ad without ad copy ($4.95-includes shipping charges) All charge customers must sign here. Expiration date Available for immediate shipment. Please enclose your check payable to INTERLUDE or complete the charge information: MasterCard Bank Code CHARGE CUSTOMERS: Order by phone toll-free! 1-800-231-5768 Ext. 306 (Texas: 1-800-392-2348 Ext. 306) Name Address City State Zip Apple II is a registered trademark of Apple Computers, Inc. , a Tandy Co. 287<br><br>Sourcebook:<br>An adult computer program that interviews two persons about their romantic preferences and then selects an appropriate interlude or scenario. Accompanied by a manual containing 106 interludes. Mach LANG: 1.50S&H<br>Price: $19.95 disk, $16.95 cassette

How's your love life? INTERLUDE #99 THE ULTIMATE EXPERIENCE A little dull around the edges? Routine? Predictable? Boring? Maybe all it needs is a little Interlude. Interlude is the most stimulating computer game ever conceived. It combines a computer interview, an innovative programming concept, and a one-of-a-kind manual to turn your love life into exciting, adventurous, delicious fun! Interlude is: romantic playful outrageous a fantasy. Interlude is: A Bed of Roses (Inter- lude #1) Mata Hari (Interlude #49) The Chase (Interlude #7) Rodeo! (Interlude #71) The King and I (Interlude #60) Some Enchanted Evening (Interlude #84) Caveman Caper (Interlude #82) From Here to Ecstasy (Interlude No. 30) Satin Dreams (Interlude #72). More than 100 Interludes are included in the program. Most are described in detail in the accompanying manual, but several surprise Interludes are buried in the program awaiting that very special time when your interview says you're ready. (When you learn secret Interlude #99, your love life may never again be the same!) Interlude can give you experiences you'll never forget. Are you ready for it? Interlude The Ultimate Experience. INTERLUDE, 10428 Westpark, Houston, Texas 77042. I'm really ready. Send my Interlude today. Apple II (16K) Cassette ($16.95) Diskette ($19.95) Diskette-Pascal or DOS 3.3 ($19.95) Add $1.50 for shipping and handling MASTERCARD Account No. TRS-80 (Level II-16K) Cassette ($16.95) Diskette ($19.95) Diskette ($19.95) Diskette-Pascal or DOS 3.3 ($19.95) VISA Poster 20 inchx24 inch reproduction of this ad without ad copy ($4.95-includes shipping charges) All charge customers must sign here. Expiration date Available for immediate shipment. Please enclose your check payable to INTERLUDE or complete the charge information: MasterCard Bank Code CHARGE CUSTOMERS: Order by phone toll-free! 1-800-231-5768 Ext. 306 (Texas: 1-800-392-2348 Ext. 306) Name Address City State Zip Apple II is a registered trademark of Apple Computers, Inc. , a Tandy Co. 287<br><br>Sourcebook:<br>An adult computer program that interviews two persons about their romantic preferences and then selects an appropriate interlude or scenario. Accompanied by a manual containing 106 interludes. Mach LANG: 1.50S&H<br>Price: $19.95 disk, $16.95 cassette

How's your love life? INTERLUDE #99 THE ULTIMATE EXPERIENCE A little dull around the edges? Routine? Predictable? Boring? Maybe all it needs is a little Interlude. Interlude is the most stimulating computer game ever conceived. It combines a computer interview, an innovative programming concept, and a one-of-a-kind manual to turn your love life into exciting, adventurous, delicious fun! Interlude is: romantic playful outrageous a fantasy. Interlude is: A Bed of Roses (Inter- lude #1) Mata Hari (Interlude #49) The Chase (Interlude #7) Rodeo! (Interlude #71) The King and I (Interlude #60) Some Enchanted Evening (Interlude #84) Caveman Caper (Interlude #82) From Here to Ecstasy (Interlude No. 30) Satin Dreams (Interlude #72). More than 100 Interludes are included in the program. Most are described in detail in the accompanying manual, but several surprise Interludes are buried in the program awaiting that very special time when your interview says you're ready. (When you learn secret Interlude #99, your love life may never again be the same!) Interlude can give you experiences you'll never forget. Are you ready for it? Interlude The Ultimate Experience. INTERLUDE, 10428 Westpark, Houston, Texas 77042. I'm really ready. Send my Interlude today. Apple II (16K) Cassette ($16.95) Diskette ($19.95) Diskette-Pascal or DOS 3.3 ($19.95) Add $1.50 for shipping and handling MASTERCARD Account No. TRS-80 (Level II-16K) Cassette ($16.95) Diskette ($19.95) Diskette ($19.95) Diskette-Pascal or DOS 3.3 ($19.95) VISA Poster 20 inchx24 inch reproduction of this ad without ad copy ($4.95-includes shipping charges) All charge customers must sign here. Expiration date Available for immediate shipment. Please enclose your check payable to INTERLUDE or complete the charge information: MasterCard Bank Code CHARGE CUSTOMERS: Order by phone toll-free! 1-800-231-5768 Ext. 306 (Texas: 1-800-392-2348 Ext. 306) Name Address City State Zip Apple II is a registered trademark of Apple Computers, Inc. , a Tandy Co. 287<br><br>Sourcebook:<br>An adult computer program that interviews two persons about their romantic preferences and then selects an appropriate interlude or scenario. Accompanied by a manual containing 106 interludes. Mach LANG: 1.50S&H<br>Price: $19.95 disk, $16.95 cassette

How's your love life? INTERLUDE #99 THE ULTIMATE EXPERIENCE A little dull around the edges? Routine? Predictable? Boring? Maybe all it needs is a little Interlude. Interlude is the most stimulating computer game ever conceived. It combines a computer interview, an innovative programming concept, and a one-of-a-kind manual to turn your love life into exciting, adventurous, delicious fun! Interlude is: romantic playful outrageous a fantasy. Interlude is: A Bed of Roses (Inter- lude #1) Mata Hari (Interlude #49) The Chase (Interlude #7) Rodeo! (Interlude #71) The King and I (Interlude #60) Some Enchanted Evening (Interlude #84) Caveman Caper (Interlude #82) From Here to Ecstasy (Interlude No. 30) Satin Dreams (Interlude #72). More than 100 Interludes are included in the program. Most are described in detail in the accompanying manual, but several surprise Interludes are buried in the program awaiting that very special time when your interview says you're ready. (When you learn secret Interlude #99, your love life may never again be the same!) Interlude can give you experiences you'll never forget. Are you ready for it? Interlude The Ultimate Experience. INTERLUDE, 10428 Westpark, Houston, Texas 77042. I'm really ready. Send my Interlude today. Apple II (16K) Cassette ($16.95) Diskette ($19.95) Diskette-Pascal or DOS 3.3 ($19.95) Add $1.50 for shipping and handling MASTERCARD Account No. TRS-80 (Level II-16K) Cassette ($16.95) Diskette ($19.95) Diskette ($19.95) Diskette-Pascal or DOS 3.3 ($19.95) VISA Poster 20 inchx24 inch reproduction of this ad without ad copy ($4.95-includes shipping charges) All charge customers must sign here. Expiration date Available for immediate shipment. Please enclose your check payable to INTERLUDE or complete the charge information: MasterCard Bank Code CHARGE CUSTOMERS: Order by phone toll-free! 1-800-231-5768 Ext. 306 (Texas: 1-800-392-2348 Ext. 306) Name Address City State Zip Apple II is a registered trademark of Apple Computers, Inc. , a Tandy Co. 287<br><br>Sourcebook:<br>An adult computer program that interviews two persons about their romantic preferences and then selects an appropriate interlude or scenario. Accompanied by a manual containing 106 interludes. Mach LANG: 1.50S&H<br>Price: $19.95 disk, $16.95 cassette

How's your love life? INTERLUDE #99 THE ULTIMATE EXPERIENCE A little dull around the edges? Routine? Predictable? Boring? Maybe all it needs is a little Interlude. Interlude is the most stimulating computer game ever conceived. It combines a computer interview, an innovative programming concept, and a one-of-a-kind manual to turn your love life into exciting, adventurous, delicious fun! Interlude is: romantic playful outrageous a fantasy. Interlude is: A Bed of Roses (Inter- lude #1) Mata Hari (Interlude #49) The Chase (Interlude #7) Rodeo! (Interlude #71) The King and I (Interlude #60) Some Enchanted Evening (Interlude #84) Caveman Caper (Interlude #82) From Here to Ecstasy (Interlude No. 30) Satin Dreams (Interlude #72). More than 100 Interludes are included in the program. Most are described in detail in the accompanying manual, but several surprise Interludes are buried in the program awaiting that very special time when your interview says you're ready. (When you learn secret Interlude #99, your love life may never again be the same!) Interlude can give you experiences you'll never forget. Are you ready for it? Interlude The Ultimate Experience. INTERLUDE, 10428 Westpark, Houston, Texas 77042. I'm really ready. Send my Interlude today. Apple II (16K) Cassette ($16.95) Diskette ($19.95) Diskette-Pascal or DOS 3.3 ($19.95) Add $1.50 for shipping and handling MASTERCARD Account No. TRS-80 (Level II-16K) Cassette ($16.95) Diskette ($19.95) Diskette ($19.95) Diskette-Pascal or DOS 3.3 ($19.95) VISA Poster 20 inchx24 inch reproduction of this ad without ad copy ($4.95-includes shipping charges) All charge customers must sign here. Expiration date Available for immediate shipment. Please enclose your check payable to INTERLUDE or complete the charge information: MasterCard Bank Code CHARGE CUSTOMERS: Order by phone toll-free! 1-800-231-5768 Ext. 306 (Texas: 1-800-392-2348 Ext. 306) Name Address City State Zip Apple II is a registered trademark of Apple Computers, Inc. , a Tandy Co. 287<br><br>Sourcebook:<br>An adult computer program that interviews two persons about their romantic preferences and then selects an appropriate interlude or scenario. Accompanied by a manual containing 106 interludes. Mach LANG: 1.50S&H<br>Price: $19.95 disk, $16.95 cassette

BASIC AND INTERMEDIATE LUNAR LAND- ER-Bring your lander in under manual control. The basic version is for beginners; the intermediate version is more difficult, with a choice of landing areas and rugged terrain. (T1) Order No. 0001R $7.95. Model III compatible Instant Software PETERBOROUGH, N.H. 03458

4PART series reviews skills using activities and graphics to reinforce concepts and pinpoint PROBLEMS.#1 fractions: addition and SUBTRACTION.#2 fractions: multiplication and DIVISION.#3USING DECIMALS.#4PERCENTAGES.<br>Price: $67.00 disk, $56.00 cassette

Based on national assoc. Of realtors (r) worksheets. Highly interactive, produces 3 reports on CRT or printer. Multiple 'what if' runs possible with changed variables. Thirty-six page manual-'help' subrout<br>Price: $380.00

LIBRARY 100 The LIBRARY 100 from TBS is without doubt the greatest software bargain ever. Released in November 1978, it has sold thousands in 44 countries. Written for the TRS-80, LIBRARY 100 contains 100 programs on five tapes. Most of the programs can be run on a 4K, Level II computer. Designed to be a basic computer library, it provides a series of programs over a broad range of topics. All programs but one are written in BASIC and can easily be modified to suit your own purposes. 'The program mix is eclectric, interesting, and curious If I had a Level II TRS-80 and one or more grade-school children, or if I were a hardcore software collector, or if I had little software and wanted to get a lot of it with a minimum of bother, I'd buy the Library 100.' Stephen Gray, Creative Computing, April, 1979. ' a basic computer library for the hobbyist, parent or businessman.' Kilobaud Microcomputing, December 1978. The programs are spread over five general categories; Finance, Education, Graphics, Home and Games. As an added bonus, the LIBRARY 100 contains Tiny PILOT, a condensed version of the high level language primarily used in education. It is perfect for teachers, parents, students and sales trainees. Using only six commands, even a child could be programming in minutes. The other programs are as follows: FINANCE: Present Value of Future Sum, Simple Interest for Days, Future Value of Present Sum, Amortization Schedule, Interest Rate-Compound Interest, Interest Rate-Installment Loan, Days Between Dates, Term of Installment Loan, Present Value of Series of Payments, Real Estate Investment Analysis, Nominal-Effective Interest, Internal Rate of Return, Future Value, of Regular Deposits, Regular Deposits for Future Value, Depreciation (Amount, Rate, Salvage Value, Schedule), Bond Present Value, Bond Yield to Maturity, Sale-Cost-Margin-Day of Week, Moving ad. EDUCATION: Multiplication & Division, Addition, Subtraction, Fraction & Decimal, States & Capitals, States and Order of Entry, States and Date of Entry, States and Abbreviations, Inventors and Inventions, World Capitals & Countries, Urban Areas and Population, Authors & Books, Presidents and Order, States and Largest City, Base Numbers. GRAPHICS: Front Cover, Wierd, Rat Race, Random Ad, Fireside, Left-Right Ad, Blocks, Herring, Launch, Blinker, Snoopy, Snow, Step Ad, Step Ad Two, Graphic Words, War Games. HOME: Bartender, Nutrition, Conversion, Perpetual Calendar, Base Conversion, Calculator, Vacation Check-off List, Telecode, Message Board, Night Check-off List, Expense Account, Babysitter, Drunkometer, Remember, Christmas List, Mileage. GAMES: Jumble, Search, Memory Quiz Letters, Sting Ray, Russian Roulette, Wheel of Fortune, Towers, Decision, Memory Quiz Numbers, Doomsday, Star Trek, Sketch, Flipper, Life, Fifteen, Speedy, Count, Road Race, Stars, Odd One, Spy Ship, Horse Race, Scissors, Craps, Star Blazer, Tiger Shark, Unjumble, Mind Reader, Roach Race, Jumble 2, Gypsy. The price for the LIBRARY 100 is only $49.50. That's less than $.50 per program. Join the thousands of users who are already enjoying this exceptional software package. Only from TBS. (We are currently working on a Library for the APPLE.) TBS has other great software for your TRS-80. CHECKBOOK II, INFO SYSTEM, & EXERCISER are general applications. BASIC TOOLKIT, SYSTEM DOCTOR & TERMINAL CONTROL are systems utilities. BUSINESS MAIL LIST, DATA MANAGER, CHECK REGISTER ACCOUNTING SYSTEM & ANALYSIS PAD are strong applications for business. TBS also has DISK HEAD CLEANERS for TRS-80 and APPLE and GRAN MASTER DISKETTES, the best on the market. TBS is YOUR COMPANY, and to you we pledge to produce quality software at a price you can afford. The above products are available NOW at Computer Stores and Associate Radio Shack Stores nationwide or directly through us. For more information please contact us at the numbers below. Paramount Pictures, Corporation. THE BOTTOM SHELF, INC. (404) 296-2003 751 DeKalb Ind. Way Decatur, GA 30033

This unit on wave superposition is designed to improve students' understanding of the use of models in physics. The unit is built around the wave theory of light.<br>Price: $30.00

Subroutine to inter-/extra-polate a set of up to 50 2-DIMENSIONAL data points using a piecewise quadratic curve fit. Integral and average value for the curve fit over a specified interval also computed.<br>Price: $10.00

TANDY Interpreting Graphs in Physics: Position vs. Time and Velocity vs. Time Grade: 9 - 12 I/III/4 Description: This physics program allows students to study rectilinear motion using computer-generated simulations. The computer displays a graph of position or velocity versus time and then presents the student with graph-related questions on concepts such as speed, displacement, velocity, and acceleration. At the end of the session, a comprehensive report screen displays the information on the student's performance in each concept covered. Hardware Requirements: 16K with cassette recorder or 32K disk system. Network Compatibility: 2, 3, 4. Support: Radio Shack. 26-1721 39.95

TANDY Interpreting Graphs in Physics: Position vs. Time and Velocity vs. Time Grade: 9 - 12 I/III/4 Description: This physics program allows students to study rectilinear motion using computer-generated simulations. The computer displays a graph of position or velocity versus time and then presents the student with graph-related questions on concepts such as speed, displacement, velocity, and acceleration. At the end of the session, a comprehensive report screen displays the information on the student's performance in each concept covered. Hardware Requirements: 16K with cassette recorder or 32K disk system. Network Compatibility: 2, 3, 4. Support: Radio Shack. 26-1721 39.95

Interactive Printing The Interprinter printer control program works interactively with other programs to control your Epson printer. It saves the current screen, then displays a menu for print modes, line feeds, variable line spacing, form feeds, form lengths, and other printer controls. Interprinter also lets you print messages on forms that the host program prints. After execution, Interprinter restores the host program and its screen. The program runs on the Models I, III, and 4 under TRSDOS 1.3 and 2.3. Special formats are also available. Interpreter is $29.95 from Comtrol Data Systems, P.O. Box 151, Asbury Park, NJ 07712, 201-988-1399.

The Intersoft C Compiler for the TRS-80 Model I and Model III . Fully compatible with all known TRS-80 Disk Operating Systems . Compiles C programs into a form which may be assembled into a cmd file on disk . No knowledge of assembler required . Compatible with disk EDTASM or Radio Shack Disk Editor-Assembler . Features Unix-style parsing of command lines, with full i/o redirection for all C programs Package includes: . ready-to-run compiler . source code for all support libraries . detailed Users Manual . sample programs library contains over 30 functions, including: . memory allocator . numeric functions . string manipulation functions . DOS interface routines . and a complete i/o package, including print(f) Also available for CP/M and 6809/Flex systems Available soon for OS-9 Price: $75.00 for complete package; manual available separately for $15.00 (applicable towards purchase of complete package.) Ontario residents please add 7% Provincial Sales Tax. Please specify your operating system and assembler when ordering. Personal cheques take 15 banking days to clear. Send cheque or money order to: Intersoft Unlimited Box 383 Station C, Kitchener-Waterloo Ontario, N2G 3Y9, Canada Unix is a trademark of Bell Labs OS-9 Microware Systems Corp. CP/M Digital Research Corp. Flex Technical Systems Consultants TRS-80 and EDTASM Tandy Corp.

Program Calculates Intoxication Intoxitron, a program from The Lawtech Co. estimates a subject's blood alcohol content and degree of intoxication, based on sex, weight, number and strength of drinks, and time since the first drink. A single occasion can be analyzed, or a general chart may be produced. INC., another program from Lawtech, explains cumulative voting, performs calculations necessary to understand and allocate shareholder voting power, and contains a checklist of pitfalls, as well as a bibliography. Each program requires a 16K TRS-80 with Level II BASIC and costs $16. They are sold by The Lawtech Company, P.O. Box 1523, La Grande, OR 97850.

INTRODUCTION TO DECIMALS ON THE COMPUTER This program is similar in format to INTRODUCTION TO MATHEMATICS ON THE COMPUTER; it covers the addition, subtraction, multiplication, and division of decimals. Each topic features six levels of difficulty. Available for the Apple II with 48K and disk, the TRS-80 with 16K and cassette, and the Pet with 8K and cassette. 3K-CP20031T Introduction to Decimals (TRS-80) $39.95

Designed to help the slow or learning disabled student increase mathematical abilities. Covers addition, subtraction, multiplication, DIVISION.6 levels of diff. Program runs itself. CASS-CP20030 DSK-DK20030<br>Price: $39.95 disk, $34.95 cassette

TANDY Introduction to Pascal Grade: 9-UP III/4 Description: This complete, structured teaching package comes with a teacher's manual, overhead transparencies, and 25 student workbooks. Provides an introduction to Pascal programming on stand-alone Model III/4 computers or in a Network 3 environment. Each lesson includes an overview, instructional objectives, structured notes, a quiz, and a hands-on activity. Lessons are: Introduction to Pascal, The Edit Cycle, Introduction to the Pascal Language, Pascal Structure and Statements, Introduction to Variables, Arithmetic Operations, Repetition, Conditional Statements, Procedures, Designing and Debugging Programs. Additional student workbooks sold separately. Hardware and Software Requirements: 48K disk system or Network 3 system with 48K student stations. Requires use of Alcor Pascal for Model III/4 or Network Pascal (Cat. No. 26-2739). Network Compatibility: 3. Support: Radio Shack. 26-2674 350.00 Additional Student Workbook. 26-2675 7.95

3 TRS-80 Diskettes, 32K; 3 Audio Cassettes...$99.00<br>Everything students need to know to get started on the road to computer literacy - without reading manuals. Hands-on, interactive instruction is provided through audio cassettes and demonstrations on diskettes.<br>Microcomputer Keyboard (one diskette, one audio cassette) - teaches how to use all the special function keys, as well as touch typing. Exercises stress words and combinations used in programming.<br>New Step by Step (two diskettes, two audio cassettes) - twenty lessons about programming in BASIC that enable users to start programming immediately.<br>Includes instructions, workbook, finger charts.

INTRODUCTORY CALCULUS SERIES This set of drill-and-practice programs covers maximas and minimas, relative rates, differentiation and integration of algebraic and trigonometric functions, integration of plane figures, volume and surface area of solids, and arc lengths. The computer generates a unique problem for each student. The students can check their own work through the computer, or have the computer grade and evalute their responses. The computer then displays the correct answers for those problems solved incorrectly, and gives an overall score. Available on 32K disk for the Apple II, the TRS-80, and the Pet; and on 64K disk for the Commodore 64 and the IBM PC. 6D-M4T Calculus Series (TRS-80) $200.00

Lotus Development Corporation Introductory Science Solverpack 4 Description: For use with TK!Solver. Covers a wide range of topics in introductory science at a level comparable to American secondary schools. Topics in chemistry, biology, physics, thermodynamics and population studies are included. The models are presented as examples of how the TK!Solver program might be used with textbooks or other teaching tools. The material is intended to serve as a guide and resource in the creation of new models for the sciences demonstrated. The documentation consists of a brief description of the topic covered by the models, the information needed to use the model, sample problems and listings of the contents of the model. Hardware Requirements: 128K and one disk drive. Support: Radio Shack. 26-1632 99.95

INV Controls Inventory INV is an advanced inventory control system that keeps track of more than 2,000 items per disk on a 32K TRS-80 system. The program is designed to produce minimum inventory investment, maximum customer service and low-cost plant operation at the same time. INV is available from Micro Architect Inc., 96 Dothan St., Arlington, MA 02174 for $89.

INVENTORY INV-V $99. 9-digit alphanumeric key for fast key random access. Reports include order info, performance summary, etc. Calculate E.O.Q. Powerful report writer. All programs are on-line, interactive, random access, virtually bug free, documented and delivered on disks. MOD-I requires 32K, DOS. We challenge all software vendors to offer low cost manuals so you can compare and avoid those high-priced undocumented, 'on-memory' programs. Send $5 for a MOD-I manual MICRO ARCHITECT 96 Dothan St., Arlington, MA 02174

9-digit alphanumeric key for fast key random access. Reports include order info, performance summary, etc. Calculate E.O.Q. Powerful report writer. A Model II version is also offered.

Now you can continue to play this popular arcade game even after you run out of quarters! Shoot down the invading aliens, but protect your guns from their bombs. Great SOUND AND GRAPHICS! (Sound requires external amplifier) To order call The Software Exchange Toll-Free 1-800-258-1790

Invaders A new arcade game, Invaders, is available for the TRS-80 Level II 16K from LEVEL IV Products, Inc., Livonia, MI. The user must defend the earth against the aliens who are marching down across the screen dropping bombs. The program, written in machine language, comes complete with sound effects. At the end of each game, it displays the current score, previous score, highest score (or new high score), hits, shots and misses. The cost is $14.95 for cassette and $19.95 for disk.

INVADERS The INVADERS are coming! Earth's defenses are dead except for your Laser base. Your assignment is to destroy the approaching INVADERS before they destroy Earth. Before Earth's sensors failed, they detected 550 armed invaders in space, speeding toward us in 10 attack formations of 55 in each group. The sensors detected four different types of attack craft: Large, Medium, Small, and a short profile craft which is the most difficult to destroy. If you cannot stop these space attackers they will stop Earth for good. (T1) Order No. 0240R $9.95. Instant Software PETERBOROUGH, N.H. 03458 603-924-7296<br><br>Sourcebook:<br>The invaders are coming! Earth's defenses are all dead except for your laser base. Your assignment is to destroy the approaching invaders. If you cannot stop these space attackers, earth is doomed! Mod iii-yes<br>Price: $9.95

Six space ships will move across the top of the screen dropping bombs. You must destroy them with your missiles before they hit you with a bomb or land.<br>Price: $10.00

MACHINE LANGUAGE & SOUND EFFECTS - INVADERS FROM SPACE by Carl Miller. A NEW ATTACK IS LAUNCHED Just when it seemed to be all over, Acorn introduces a new and faster machine language version of this classic space game. In the game, the aliens are dropping bombs, moving from side to side, and trying to overrun your bases. You try to hold them off by shooting at them and scoring with each hit. In INVADERS FROM SPACE you choose the game speed, the enemy bomb frequency and accuracy, the number of shots on the screen, and the number of your bases. These choices produce a weight scoring factor, and make it fun for all ages. Move your base and fire at the invaders--both at the same time--which you can not do in most similar games. Full sound effects add excitement to the incredible speed and action of INVADERS FROM SPACE. Acorn produces many game programs for the TRS-80. These include PIGSKIN, the one-or-two player football strategy game; PINBALL a graphic arcade game; and GAMMON CHALLENGER, the popular backgammon program. Each is available at only $14.95 on tape and $20.95 on disk for a 16K Level II TRS-80. Ask for these and other quality programs at your local computer store. Acorn Software Products, Inc. 634 North Carolina Avenue, S.E., Washington, D.C. 20003

MACHINE LANGUAGE & SOUND EFFECTS - INVADERS FROM SPACE by Carl Miller. A NEW ATTACK IS LAUNCHED Just when it seemed to be all over, Acorn introduces a new and faster machine language version of this classic space game. In the game, the aliens are dropping bombs, moving from side to side, and trying to overrun your bases. You try to hold them off by shooting at them and scoring with each hit. In INVADERS FROM SPACE you choose the game speed, the enemy bomb frequency and accuracy, the number of shots on the screen, and the number of your bases. These choices produce a weight scoring factor, and make it fun for all ages. Move your base and fire at the invaders--both at the same time--which you can not do in most similar games. Full sound effects add excitement to the incredible speed and action of INVADERS FROM SPACE. Acorn produces many game programs for the TRS-80. These include PIGSKIN, the one-or-two player football strategy game; PINBALL a graphic arcade game; and GAMMON CHALLENGER, the popular backgammon program. Each is available at only $14.95 on tape and $20.95 on disk for a 16K Level II TRS-80. Ask for these and other quality programs at your local computer store. Acorn Software Products, Inc. 634 North Carolina Avenue, S.E., Washington, D.C. 20003

MACHINE LANGUAGE & SOUND EFFECTS - INVADERS FROM SPACE by Carl Miller. A NEW ATTACK IS LAUNCHED Just when it seemed to be all over, Acorn introduces a new and faster machine language version of this classic space game. In the game, the aliens are dropping bombs, moving from side to side, and trying to overrun your bases. You try to hold them off by shooting at them and scoring with each hit. In INVADERS FROM SPACE you choose the game speed, the enemy bomb frequency and accuracy, the number of shots on the screen, and the number of your bases. These choices produce a weight scoring factor, and make it fun for all ages. Move your base and fire at the invaders--both at the same time--which you can not do in most similar games. Full sound effects add excitement to the incredible speed and action of INVADERS FROM SPACE. Acorn produces many game programs for the TRS-80. These include PIGSKIN, the one-or-two player football strategy game; PINBALL a graphic arcade game; and GAMMON CHALLENGER, the popular backgammon program. Each is available at only $14.95 on tape and $20.95 on disk for a 16K Level II TRS-80. Ask for these and other quality programs at your local computer store. Acorn Software Products, Inc. 634 North Carolina Avenue, S.E., Washington, D.C. 20003

MACHINE LANGUAGE & SOUND EFFECTS - INVADERS FROM SPACE by Carl Miller. A NEW ATTACK IS LAUNCHED Just when it seemed to be all over, Acorn introduces a new and faster machine language version of this classic space game. In the game, the aliens are dropping bombs, moving from side to side, and trying to overrun your bases. You try to hold them off by shooting at them and scoring with each hit. In INVADERS FROM SPACE you choose the game speed, the enemy bomb frequency and accuracy, the number of shots on the screen, and the number of your bases. These choices produce a weight scoring factor, and make it fun for all ages. Move your base and fire at the invaders--both at the same time--which you can not do in most similar games. Full sound effects add excitement to the incredible speed and action of INVADERS FROM SPACE. Acorn produces many game programs for the TRS-80. These include PIGSKIN, the one-or-two player football strategy game; PINBALL a graphic arcade game; and GAMMON CHALLENGER, the popular backgammon program. Each is available at only $14.95 on tape and $20.95 on disk for a 16K Level II TRS-80. Ask for these and other quality programs at your local computer store. Acorn Software Products, Inc. 634 North Carolina Avenue, S.E., Washington, D.C. 20003

MACHINE LANGUAGE & SOUND EFFECTS - INVADERS FROM SPACE by Carl Miller. A NEW ATTACK IS LAUNCHED Just when it seemed to be all over, Acorn introduces a new and faster machine language version of this classic space game. In the game, the aliens are dropping bombs, moving from side to side, and trying to overrun your bases. You try to hold them off by shooting at them and scoring with each hit. In INVADERS FROM SPACE you choose the game speed, the enemy bomb frequency and accuracy, the number of shots on the screen, and the number of your bases. These choices produce a weight scoring factor, and make it fun for all ages. Move your base and fire at the invaders--both at the same time--which you can not do in most similar games. Full sound effects add excitement to the incredible speed and action of INVADERS FROM SPACE. Acorn produces many game programs for the TRS-80. These include PIGSKIN, the one-or-two player football strategy game; PINBALL a graphic arcade game; and GAMMON CHALLENGER, the popular backgammon program. Each is available at only $14.95 on tape and $20.95 on disk for a 16K Level II TRS-80. Ask for these and other quality programs at your local computer store. Acorn Software Products, Inc. 634 North Carolina Avenue, S.E., Washington, D.C. 20003

Invaders A new arcade game, Invaders, is available for the TRS-80 Level II 16K from LEVEL IV Products, Inc., Livonia, MI. The user must defend the earth against the aliens who are marching down across the screen dropping bombs. The program, written in machine language, comes complete with sound effects. At the end of each game, it displays the current score, previous score, highest score (or new high score), hits, shots and misses. The cost is $14.95 for cassette and $19.95 for disk.

Invaders A new arcade game, Invaders, is available for the TRS-80 Level II 16K from LEVEL IV Products, Inc., Livonia, MI. The user must defend the earth against the aliens who are marching down across the screen dropping bombs. The program, written in machine language, comes complete with sound effects. At the end of each game, it displays the current score, previous score, highest score (or new high score), hits, shots and misses. The cost is $14.95 for cassette and $19.95 for disk.

Invaders A new arcade game, Invaders, is available for the TRS-80 Level II 16K from LEVEL IV Products, Inc., Livonia, MI. The user must defend the earth against the aliens who are marching down across the screen dropping bombs. The program, written in machine language, comes complete with sound effects. At the end of each game, it displays the current score, previous score, highest score (or new high score), hits, shots and misses. The cost is $14.95 for cassette and $19.95 for disk.

Invaders A new arcade game, Invaders, is available for the TRS-80 Level II 16K from LEVEL IV Products, Inc., Livonia, MI. The user must defend the earth against the aliens who are marching down across the screen dropping bombs. The program, written in machine language, comes complete with sound effects. At the end of each game, it displays the current score, previous score, highest score (or new high score), hits, shots and misses. The cost is $14.95 for cassette and $19.95 for disk.

Invaders A new arcade game, Invaders, is available for the TRS-80 Level II 16K from LEVEL IV Products, Inc., Livonia, MI. The user must defend the earth against the aliens who are marching down across the screen dropping bombs. The program, written in machine language, comes complete with sound effects. At the end of each game, it displays the current score, previous score, highest score (or new high score), hits, shots and misses. The cost is $14.95 for cassette and $19.95 for disk.

Invaders A new arcade game, Invaders, is available for the TRS-80 Level II 16K from LEVEL IV Products, Inc., Livonia, MI. The user must defend the earth against the aliens who are marching down across the screen dropping bombs. The program, written in machine language, comes complete with sound effects. At the end of each game, it displays the current score, previous score, highest score (or new high score), hits, shots and misses. The cost is $14.95 for cassette and $19.95 for disk.

INVADERS: Save the Earth from the Alien invaders! You must shoot down 50 Invaders before they land or before you lose your three lives. If your score reaches 1500 you get another life. If you are a good shot you can get a score of 3000 but don't forget the Aliens shoot back and the fewer there are, the faster they move. Requires 4K Level II Invaders. 26-7912 9.95

INVADERS: Save the Earth from the Alien invaders! You must shoot down 50 Invaders before they land or before you lose your three lives. If your score reaches 1500 you get another life. If you are a good shot you can get a score of 3000 but don't forget the Aliens shoot back and the fewer there are, the faster they move. Requires 4K Level II Invaders. 26-7912 9.95

INVADERS: Save the Earth from the Alien invaders! You must shoot down 50 Invaders before they land or before you lose your three lives. If your score reaches 1500 you get another life. If you are a good shot you can get a score of 3000 but don't forget the Aliens shoot back and the fewer there are, the faster they move. Requires 4K Level II Invaders. 26-7912 9.95

TRS-80 AFTER THE REST, TRY THE BEST INVADERS WITH SOUND TRS-80 inchAlien INVADERS from deep space are now approaching our planet in great swarms to colonize on Earth. The invaders feel they must destroy all life forms ' This MACHINE LANGUAGE Arcade Game will be the best in your library! 5 Levels of Play Will You Survive? ONLY $14.95 Cassette from LEVEL IV PRODUCTS, INC. Michigan (313) 525-6200 Outside Michigan 1-800-521-3305 32238 Schoolcraft, Suite F4, Room C . Livonia, MI 48154 . SEND FOR THE LATEST FREE CATALOG OVER 250 DIFFERENT ITEMS IN STOCK FOR THE TRS-80 . A PRODUCT OF TANDY CORP.

TRS-80 AFTER THE REST, TRY THE BEST INVADERS WITH SOUND TRS-80 inchAlien INVADERS from deep space are now approaching our planet in great swarms to colonize on Earth. The invaders feel they must destroy all life forms ' This MACHINE LANGUAGE Arcade Game will be the best in your library! 5 Levels of Play Will You Survive? ONLY $14.95 Cassette from LEVEL IV PRODUCTS, INC. Michigan (313) 525-6200 Outside Michigan 1-800-521-3305 32238 Schoolcraft, Suite F4, Room C . Livonia, MI 48154 . SEND FOR THE LATEST FREE CATALOG OVER 250 DIFFERENT ITEMS IN STOCK FOR THE TRS-80 . A PRODUCT OF TANDY CORP.

Prevent an ALIEN INVADER from destroying the Earth. 16K.

Invasion Force. You are the commander of a starship patrolling the outer reaches of the galaxy. You must destroy the aliens before they destroy you! A fascinating game of strategy. 26-1906 14.95<br><br>Sourcebook:<br>Command a space ship via TRS-80 keyboard. Destroy the aliens before they destroy you.<br>Price: $19.95

Invasion Force. You are the commander of a starship patrolling the outer reaches of the galaxy. You must destroy the aliens before they destroy you! A fascinating game of strategy. 26-1906 14.95<br><br>Sourcebook:<br>Command a space ship via TRS-80 keyboard. Destroy the aliens before they destroy you.<br>Price: $19.95

Invasion Force. You are the commander of a starship patrolling the outer reaches of the galaxy. You must destroy the aliens before they destroy you! A fascinating game of strategy. 26-1906 14.95<br><br>Sourcebook:<br>Command a space ship via TRS-80 keyboard. Destroy the aliens before they destroy you.<br>Price: $19.95

Invasion Force. You are the commander of a starship patrolling the outer reaches of the galaxy. You must destroy the aliens before they destroy you! A fascinating game of strategy. 26-1906 14.95<br><br>Sourcebook:<br>Command a space ship via TRS-80 keyboard. Destroy the aliens before they destroy you.<br>Price: $19.95