May June 1980 - Commodore Computers
May June 1980 - Commodore Computers
May June 1980 - Commodore Computers
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MAY/JUNE, I NE. <strong>1980</strong>. I960. ISSUE 4.<br />
COMPUTE.<br />
3<br />
Table of Contents<br />
The Editor's Notcs Notes . . ... . ... ... . .. . ... . .. Robat Robert Lock, 6<br />
<strong>Computers</strong> and Societyy . David D. Thornburg Thomburgand Betty}. J. Burr, Butt, 8<br />
Microcomputers and the Handicapped: : The Delmarva Computer<br />
Club Column . . . . . . . . . . Susan Scmancik, Semancik, 13<br />
Product Feature: The <strong>Commodore</strong> 8032 .... Larry Isaacs and Robn"t Robert Lock, 14<br />
Keeping Up the Payments: Basically y Useful<br />
BASIC .. . Marvin L. De}ongand Dejong Robert Lock, 19<br />
6502 Software Design (New Book Excerpt) : . Leo}. LcoJ. Scanlon, 21<br />
<strong>Computers</strong>: Boring, Boring, Boring . . . . . . . . . . . . . . .. Ron KushnitT, Kushnier, 27 11<br />
Inside Atari Basic . .. . . .. . .. ...... Larry Isaacs, 31<br />
Book Review: Pet and the IEEE·4BB IEEE-488 (CPIB) (GPIB) Bus . .. ... .Jim Butterfield, Butterfieid, 37<br />
Book Review: 6502 Software Design .. . . Jim Butterfield, Butterfieid, 40<br />
Big Files on a Small Computer. . . . . . . . . . . . .. . Elizabeth Deal, 42<br />
Using Pet's Second Cassette Buffer to Increase Memory<br />
Space . . . . . . . . . . . . . . Chuck Stunrt, Stuart, 48<br />
Enhancingng <strong>Commodore</strong>'s Word Pro III . Larry Isaacs, 53<br />
Machine Language Tools . . . JJim Butterfield, Butterfieid, 57<br />
Algebraic Input For thc the Pet .. . __. _...... Harvey Davis, 58<br />
Pct Pet Data Copier . . . . . . . . . . . . . ........ . . Ron Run Straley, 59<br />
Cross Reference for the Pet . . . .Jim Butterfil!ld, Butterfieid, 63<br />
Review: Digiclocks Digielocks Printer . . . . David Bosleel Bosteel and Chuck London, 66<br />
The Learning Lab ...... Marlene rll!T/l! Pral/o, Pratto, 69<br />
Structured Gaming in High School Computer Science<br />
. . . . . . . . . . . . . . J.I\;[. J.M. A'foshell, Moshell, G. W. IV, Amann, and W.E. Baird, 72<br />
A Pct Pet ""Answer-Box" Program ...... . .. . . .. Thorwald ThonvaldEsbmsen, Esbu/.S(1/, 74<br />
Pet-GET with Flashing Cursor . . .. . .. . .. .......... Gary Greenburg, 77 11<br />
Two ""mini" Reviews: Atari Basic Cards (Micronottons)<br />
icronotions)<br />
Mailing List (Dr. Daley) . . Robat Robert Lock, 79<br />
The Consumer Computer . . . . . . . . . . . . . . . . . Len Lindsay, 83<br />
Review: D&R Cassettee System . . . . . . . . . . . . . . . . . Robert Robal Baker, Bakl!r, 86<br />
PETting With AJoystick A . . . ... .. . Harvey f1arvl!Y Herman, f1trmoll, 89<br />
The Apple Gazette . . . . . . . . . . . . . . . . . . . . .91<br />
Appletivitics Appletivities at the West Coast Computer Faire . . . ..Joe J Budge, 91<br />
The Apple Pi Trading Library. . . . . . . . . . . ........ Terry Ta)'lor, Taylor, 93<br />
Interview with Taylor Pohlman, Apple's Product Marketing<br />
Manager ager .. . .ft'[ichaei Michael S. Tomczyk, TomcZ)'k, 95<br />
The Atari Alari Gazette . . . . . . . . . . . . . . .... . 97<br />
Introduction to "Three-Dimensional" " Threc- Graphics for your<br />
Atari . . . .. ... . .. . David D. Thornbutg, Thornburg, 97<br />
Atari TapeT Data Files: A Consumcr Consumer Oriented Approach .... ..AlBaker, At 99<br />
"Enter" " with Atari a"i . . . . . . . . . . . . . . .. . ... . ... . . . .. . . Len Lindsay, Lindsa)', 103<br />
Atari Program Saving, Part II ...... . Lr/i Lell Lindsay, Lil/dso)', 103<br />
The Pet Gazette . . . . . . . . . .................. 104<br />
BAM- - Block Access Map for r <strong>Commodore</strong> Drives s .... Tom Conrad, 104<br />
Rambling . . . . . . . . . . . . . . . . .. ... . . . ... .. Roy O'Brien, 109<br />
Cheep Chcep Print, Part II . . ...... .. . .. ......... C.A. McCarthy, l\4cCarthy, 111 II I<br />
Relocate Pet Monitor or Almost Anywhere . . . ... Roy Busdiecker, 115 l IS<br />
Pet Programs on Tape Exchange .................. Gene Gellt Beals, 119 I 19<br />
Capute: Caputc: Our Corrections Page .... . .. . . . . . .. .. ...... . Robert Lock, 120<br />
Pel Pet Program Listing Explanation . .. . . . . . . . ... .. .... . .. . . . . . 120<br />
Sublcription Information:<br />
U .S . $9 .00/6 issue yea r<br />
CANADA J12.00/6 $1 issue<br />
year (U.S. funds)<br />
Europe: Air Subscription<br />
J22.50 $22 U.S./6 U .l6 issue iuue year<br />
Other O areas: Inquire for<br />
air rates.<br />
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In (he the United Kingdom and Europe, new<br />
.ubtcriber. .u:).( ; ilici - and dealers dealeu should roniac! contact ::<br />
L.P. LoP. Enierpritci Enterpri.e.<br />
Ing. I W. W . Hofackcr H ofacker GMBH<br />
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and Austria) Au.tria)<br />
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Address all articles, circulation<br />
Address all articles, circulation<br />
questions and other inquiries to:<br />
COMPUTE.<br />
P.O. Box 54O6 5406<br />
Greensboro, NC 274O3 27403<br />
(919) 272-4867<br />
(919) 272-4867<br />
surf Staff of COMPUTE; UTE:<br />
Robert C C. . Lock, . Editor/Publisher<br />
Carol Holmquist Lock. Lock, Circulation Manager.<br />
.<br />
Lu Larry ry Isaacs. Softwarc:lH ware/ Hardware lIrdwa re Lab.<br />
j Jorctta l1a Klepfer, Editorial Auistant.<br />
Assistant.<br />
Marlene PratlO. Pratto. Educational Assistant. .<br />
COMPUTE, PUTE. receives \'es continuing aassistance u i ~ l a n from Ihe the following<br />
pcrsons:<br />
persons:<br />
Han Harvey 'ey B. Herman, . University niveuity of North h Carolina at Greensboro,<br />
Dept. of Chemistry. Edi Editorial An Assistance.<br />
David Gibbs. The [ksign Design Group, Greensboro, N.C N.C, . , Arl Art Directionl<br />
Direction/<br />
Design Consultation.<br />
j Jim BUllerfi Butterfieid, cld, Toronto. Editorial AssiSlance.<br />
Assistance.<br />
The following writers contribute ntrii> lU e on a regularr basis ;I as S Associate<br />
Editors:<br />
:<br />
Gene Beals. 11 Ilfi 5 E. Stump u Road, . Monignmcryville, ontgomeryville. Pennsylvania<br />
18936.<br />
Len Lindsay, 1929 Northport Drive '#6, r-,·Iadison. Madison, Wisconsin 53704.<br />
Roy O· O'Brien, . POSt Post Office Box 426, , Beaumont, California aliro 92223.<br />
Eric Rehnke, Rehnkc, '61. # 61, 5540 .. 0 S. Ranchview Circle, Anaheim Hills,<br />
Calirornia California 92a07.<br />
92807.<br />
Appliu Application to mail at controlled circulation postage ralCi rates is pending<br />
at Greensboro, North Carolina. Postma. Postmaster: ter; Send change or of address ..<br />
10 to COl\-IPUTE, COMPUTE, Post Office Box Oll 5406, Greensboro, , NC 27403.<br />
COMPUTE is published by Small Systcm System $crvices, Services, Inc., 900·902<br />
900-902<br />
Spring Garden Sireel Street, , Greensboro, Non Northh Carolina 27403. Telephone:<br />
(91 (919) 9) 2i2-4867. 272-4867. COr-.·IPUTE COMPUTE is published six times ~ each a year on a<br />
bimonlhly bimonthly schedule. Subscription COSI cost for one year IS is $9.00. 19.00. C01l.·1- COM<br />
PUTE is ;\V;libble available by subscription ion or through retail dealcr dealer sales. .<br />
Suhscription Subscription prices higher outside the US. US, (Sec (See below)<br />
below}<br />
Addrcss Address all lllanuscripu manuscripts alld and corn:spondcllce correspondence to COMPUTE.<br />
Post Office Box 5406, Greensboro, N.C. 27403. Materials<br />
alerials<br />
(ad\'enising (advertising an art work, , hardware. hardware, Ctc.) etc.) should be addressed 10 to<br />
CCOMPUTE., O ~I 900 Spring Gardcn Garden Street, Greensboro, , N.C. 27403.<br />
Emirc Entire eontcllls contents copyriKht copyright © t980 <strong>1980</strong> by b)' Small Systcm System Scrvices Services. ..<br />
Inc. All rights reserved, rved. "CO "'COMPUTE. The Journal j for Progressive<br />
Computing" is a Iradcmark trademark or of Small S)'uelll System Services. Inc.<br />
ISSN0194-357X.<br />
Ot94-J X .<br />
COMPUTE, ~ I P U T E . assumC5 assumes no liability ), for errors in :lrt ankles icles or<br />
advenisemelll advertisements. s. Opinions expressed by b)' authors arc are not necessarily n« esurily<br />
those of COMPUTE.<br />
Authors of manuscripts war"lnt warrant that all materials submitted to<br />
COMPUTE, PUTE. arc are original materials with ...·ilh full rull ownership righlS<br />
rights<br />
resil[ent resident in said authors. Dr By submitting articles to 10 COMPUTE,<br />
CQ1I.-II'UTE.<br />
authors acknowledge 111;11 that such materials, upon l>on acceptance for<br />
publication, . become the exclusive cxclusive property of Small Smail System<br />
Services, Inc. Unsolicited manuscripts m;tnusc nOt not accepted for publica <br />
tion by COMPUTE, COMPUTE. will witt be returned u rned if author provides a selfaddressed,<br />
. siamped stamped en\·clope envelope. . Program listings should be pro·<br />
vided in printed form rorm as well as machine readable fnrm. form.<br />
Articles should be furnished as :IS typed uipy (U p y with double spacing. spitcing.<br />
self<br />
Each E:u;h page of your )'our arlide article should bear bl'ar the title tl c of the article,<br />
dale d;lIe and name n:lllle of the author.<br />
PET is a trademark of Cnminodorc <strong>Commodore</strong> Business Machines, /I.·1achincs, Inc.<br />
Apple is a trademark of Apple Computer Company.<br />
Atari '\ !:Iri is a trademark of Atari, Inc.<br />
Advertisers<br />
iscl"I Index Indell<br />
AB AU <strong>Computers</strong> Compulers .. .. . .. . . . . 26<br />
Abacus Atmcus Software ; u·~ . . 24<br />
Automated Simulations Simuhlt iOlls . ........ 85 a5<br />
BYTE . ... 9<br />
CGRS Microtech M ...... 22,110<br />
1 to<br />
CMSC 1I. IS Software ... .. .... . .... 2,108 2. JOa<br />
Cognitive Cogniti\"t: Products. . .. 71<br />
<strong>Commodore</strong> Business Busilless<br />
Machines M .... 15,16,17,18,1Y'.RV.<br />
15. 16, l i,18.52. BC<br />
Competitive Software Sortware . .. ...... Jit! J 18<br />
COMPUTED CO:\II' UTE's Book Corner .... DMC<br />
Computer Center Celi terof South Bend .87 . Computer pUler House Hou$