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Thousands of you have already experienced the speed and power of the DOSPLUS* IV disk operating system for the TRS-80** Model 4 microcomputer. Now Micro-Systems Software introduces: DOSPLUS IV/A.

DOSPLUS IV/A is the same great disk operating system as the DOSPLUS IV already released, but with one big PLUS! DOSPLUS IV/A includes the M-ZAL*** Disk Editor/Macro-Assembler. The best disk operating system for the Model 4 combines with the best editor/assembler to bring you all the development software you should ever need for the Model 4 at one low price.

Trademarks:

* "DOSPLUS" and "6.0 PLUS" are trademarks of Micro-Systems Software Inc. TRS-80" and "TRSDOS" are trademarks of Tandy Corporation 'M-ZAL" is a trademark of Computer Applications Unlimited

DOSPLUS IV retailed for $149.95, but DOSPLUS IV/A will retail for only $169.95! The greatest software combination imaginable for only a $20 increase in price! No-one should be without this package! Existing DOSPLUS IV owners can upgrade their packages for only $25.00.

Micro-Systems Softwares DOSPLUS IV brings unmatched speed and power to the Model 4, and now MSS brings the TRUE MODEL 4 EDITION of M-ZAL, (a regular $149.00 value) the world's best machine language development system. Now there is NO other choice when seeking the best Model 4 operating system...

Dealer inquiries invited.

MICRO-SYSTEMS SOFTWARE, INC.

4301-18 Oak Circle, Boca Raton, Florida 33431, Telephone: (305) 983-3390

Orders Only 1-800-327-8724

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NOW. I KNOW ( CAN MAKE BIG MONEY WRITING AND SELLING MV PROGRAMS. THIS BOOK TOLD ME WHAT TO WRITE - WHO TO SELL IT TO - THOUSANDS OF NAMES. ADDRESSES. IDEAS. GUIDELINES.

"SOFTWARE WRITER'S MARKET" IS A FANTASTIC BOOK!

WHO TO SELL YOUR PROGRAMS TO THOUSANDS OF COMPANY NAMES AND ADDRESSES, WITH DETAILED LISTINGS SHOWING:

(1) WHAT PROGRAMS PUBLISHERS ARE LOOKING FOR

(2) HOW THEY WANT YOU TO SUBMIT YOUR PROGRAM

(3) HOW MUCH THEY PAY — AND WHEN! 100 CATEGORIES — FROM "ACCOUNTS RECEIVABLE'" TO "GAMES" TO "VIDEO CONTROL" PROGRAMS

* HOW TO WRITE CLEAR DOCUMENTATION

* DEBUGGING TECHNIQUES Name

Order Your Copy Today!

Enclose check or money order for $19.95 fNo C.O.D.'sJ to:

#2 ipf Publications 146 Country Club Lane Pomona. NY 10970 C914J 354-5585

Address

City

State Zip

March, 1984 3

© 1984, 80-Northwest Publishing, Inc. All rights reserved. Reproduction for other than personal non-commercial purposes, or further distribution in any other form, is prohibited. No patent liability is assumed with respect to the use of the information contained herein. While every precaution has been taken in the preparation of this publication, the publisher assumes no responsibility for errors or omissions. Neither is any liability assumed for damages resulting from the use of any information contained herein. Please address correspondence to: Basic Computing, 3838 South Warner Street, Tacoma, Washington 98409, (206)475-2219 voice, (206) 756-0448 modem.

Authors: We constantly seek material from contributors. Send your material (double spaced, upper/lower case, please) and allow approximately 4 to 6 weeks for review. Programs must be supplied in machine-readable form on diskette or tape, clearly marked as to model and operating system. Text files may be on diskette, but please include a hard copy as well. Media will be returned if return postage is provided. Cartoons and photographs are welcome. Generous compensation will be made for non-trivial works which are accepted for publication. Basic Computing pays upon acceptance rather than on publication.

SUBSCRIPTION PRICE: U.S.: $19 97 for one year, $34.97 for two years and $49.97 for three years. Canada and Mexico: $29 per year, no two or three year subscriptions are offered. All other:$36 per year via surface mail, $78 per year via airmail. Two and three year subscriptions are not offered.

ISSN Publication #0745-9912. Basic Computing is published monthly by 80-Northwest Publishing, Inc., 3838 S. Warner St., Tacoma WA 98409-4698. Printed in the United States of America.

POSTMASTER: Please send change of address form 3579 to Basic Computing, 5615 West Cermak Road, Cicero. Illinois 60650. Second Class postage PAID at Tacoma, WA and additional entry points.

The TRS-80 User Journal

TRS-80 is a trademark of the Tandy Corp.

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