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1008 - 1500 - 2068 CAMBRIDGE 9 / ee:

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VOLUME 7

(SGURREUREAEI (SEBEREEEEOGI

VIEY

FROM / wevewne -

RANTOP a aacememammeed Very late issue of

TIMELIMEZ. Yes, it seems that spring fever has hit hard this year. My lastest issue of Time Hesign is still the Sep/Oct of igSe. At least I am in the right year. Since the warm weather has started, I have been living a dream that started when my uife and I moved to the valley. I have always been athtetic with regards to Bicycle riding. My 18 speed “Super Sport" Schuinn bike and I have logged many mites to- gether in’ Florida. However, when I saw all these mountains around us heres I never dreandof actu— ally riding up them. It never occured to me that I could? The highest I had ever riddenuwas a email mill mo higher that 258 feet. That's high to Florida standards! But here, well I gave it a try and succeeded. I can

mow say that I have been up to Lick Observatory, Sierra VYista loop; and the intersection of Route 9 and Route 35 <Skyline Bivd.>. Io am planning a trip in June ta ride from Palo Alta up

to \

goer ree . | &

Route 3 to Santa Cruz and back. The total trip, I am tolds is around 156 miles covering 2 days from start to finich. The most I have achieved is a 166 mile ride | over 2 days, however, I was much younger then (22> and in better shape. Anyway, what does this have to due with our computers? Absolutely nmathing! Like I said, this is why the newsletters have been late. Yes; spring fever is in the air. Watch cut or you' tl catch it too.

CRO) RENINOER The next tuo TIMELINE? issues

ore bi-monthly to maintain a

ear subscri biked balance.

MeLINeZ —

ISSUE @4

APRIL 1989 $1.58

* : \_TIMEXsinctair User Croup Hews-fagazine—{

> . A C . Ml

NEMOCRA

ELECTION

NEWS

Sixty seven eligible voting menbers received ballots to vote om officers for the charter year of S.N.U.G. There were five offices with five candidates for each office. ALL election tatats were supervised by an unbiased party, Mrs. Julia Batley, a deputy for the Pasco County Su- Ppervisor of Elections, Florida.

Forty three baltots were re- ceived by the election deadline, and 9 absentee ballots were con- firmed bu Mrs. Bailey prior to the election deadline, four Jisiabaliaaial decided to withdrau.

‘Here c Cie the ait bton results:

' PRES IDENT :

Mel Nathanson—4@ C7675 James Curry cCWITHORELD —66 (1225 Jcoam Keaty —84 (68723 Gary Lescsenberryu —@1 (@24) D.R. Oviatt CWITHDREW —-@1 (@2%>

FIRST VICE PRESIDENT:

Paul Holmgren —273 (547 Donald Lamber-t -16¢C19°> David Hartman —8/ (1373 Alex Burr —-H4 (a37> Ted Heckman —3 (@6225

SECOND VICE PRESIDENT:

Basil Wentuorth —26 C3873 Frank Davis ~13¢2575 Ruth Feglu ~12 (2373 Laurie Futrelt —G? (137 Frank Orosz —-46 (O07)

SECRETARY :

Rudrey Curnutt —26 C3973 Gary Lessenberry ~16¢317> Andreu Hradesky ~@9 C172) Mike Bowers -~@?7 €1372> William Wood —@ (@G7>

JFJREASURER:

John Cushran —20 C38%>

Tim Stoddar-d-WITHOREW -21 ¢4@7 Rodger Phe lps—WITHOREW-—@5 (167%)

Chris Crauford —-@3 (66> Ken Franke | —-@3 (O67

TT I] | user group

| EE LL

I] TIMEXsinclair's 1660, 1566, 2068

Ki Sinclair's

SUPPORT FOR:

Cambridge's 283

sinclair @

DESK-TOP PUBLISHING FOR THE SINCLAIR @L

fhm delipenetgailberestareelimm-allitrtniewadlltrundigtion athasterdi-amenadiieuntitena Hesaaantiour sate

SSS SSS SS =a

TIMELINE? INFORMATION

ee Ee SS i ie i EN Se eS MA Genial inten ck a

TIMNERsinclair

Nf | Neus-Magazine

E E 2% Spectrum+ 128K Guantum Leap (QL?

PRINTED SINE PROFESS 100.

COPUTER OND THIS PROGRES.

TIMELINEZ nevus-magazine is publ ished and is @ Copyright 1989 by American ao Sustems, San Jose, CA 35121. TINELINEZ may be freely copied for non- commerctal use only. Reproduction in whole or in part for conmercial means is prohibited by law. GIVE CREDIT! !

SUBSCRIPTIONS: $15.06 a yeor for ten issues (U.S./funds only — make checks payable to fimerican Micro Systems>. All other countries please write for detaits on surface and air mail rates.

CHANCE OF ADDRESS: Please notify us by calling or writinga our office if there is any change in your current mailing

address to prevent delay or even loss

of service.

RENEWAL TIME? To determine your expir- ation date, simply read the date posted om the right side of the mailing label C(maaazine rear-cover>. This date indi- cates the last issue of your subscrip— tion. Your label will state two issues prior to renewal, “REMINDER — Subscrip— tion Now Bue“, as our reminder ta you that am early reneval is veru much ap—- preciated. Keep the communication open and let us know your imterests. TIMELINE? is as good as your support.

NOTICE: Contributors to TIMELINEZ ore independent of American Micro Systems and opinions expressed in the contents of this publication are not necessarily those of the management staff or its advertisers. American Micro Systems vill not be held Liable for any damage or consequences resulting from instru- ctions, assertions of face, review of products or companies provided in the

mopazine'’s content. It is recommended that enyore attempting-te modify their f i computer or constructing an electrical project should seek hele from sore

knowledgeable individuals.

PS TS LAS a A A - e- O ES S S A S aD Sarat a Ae A Se ee ee <ete-eee center Ser eave Semi <A

Make alt N/“L Exchange correspondence tos

T“S-PUG: George Mockr idge

T/S-SUU: Bitl Mitller—-SincLink ST-EBZUG: John Ezike

FCW T/YS_SIG: Mark Wahl TAS-BAN,Inc: George Featherman

fidvertising: Gil Blasingame George NMockr idge

N/L Exchange:

T/?S-PUG: George Mockr idse T/“’°S-SUU: Bill Mittler CSLI*> TAS-BAM: George Feather-man

Advertising Schedule:

Full Page: ... Half Page: 1°4 Page: 1/78 Page:

fimertican Micro

2173 born Rd. #262 Sea Jose, CA 95121 (403) 276-9736 CompuServe IB% 72267 ,3372

TIMELINES

P.0. Box 1312 Pacifica, CA G4044 ATTN: George Mockr idge

Back issues of TIME- LINEZ, 7/83 thru 12/87 Contact Bill Milter at:

Sinclink 6675 Clifford Drive Cupertino, CA 95014

Issues 1/°8S -—- present,

- - $44.66 contact your editor at

. « $26.00 fmerican Micro.

s 2 % & 88

- - $ 5.66 The POSE Library is mow avattlable to alls

systems covering T/Si886-156G,

T’“S 27068, Spectrum and the GL.

Contact American Micro for further detaits.

ConpaServe IB# 72168,2011

IMELINEZ

$.N.U.6. CONTINUED... -

Frank Davis is serving as the Public Domain software Librarian, There iss a staff assisting him. (ps. have anything to contrib-— ute’?>

Several members have asked how the elections vere determined. Many said they had no idea who some of the nominaties were. Another questionedthe validity of reasoning — Why would the established teader<= want to turn over the leadership to unkown) quantities.

Although many of the nominees were mot familiar to the voters, this would be an excellant ap- Portuntty to impart new ideas and meu blood into the group. Due to the short period of time and the need to get up and run mings we had te utilize the election process that we did. As to why the election was held in the first place? There have been too many allegations of a grab for povwer. Elections were the omty fair way to prevent any claims. The election was held and regulated as fairly as pos— sible. In the futures procedures

will be more structured... formals |

and organized. Towards that ends, we will have a Bu-lauws committee and am Election committee. We are announcing that the next election wittl take place on January 14, 1994.

TOPIC: To S.WH.U.G.°'s user soroup members — would yuou put to a vote of your membership whether or mot your group uttll make a donation to S.N.U.G.°'S growing public domain library. At this time we wittl weed out all the duplicated programs and elimt— nate those programs that we identifu as non-public domain material.

As soon as a standard method of listing the programs is vwork—- ed out we will inform all of the Library's conmtents. Several lists are circulating of the 7468 libraru. The GL lib is grooving SLOWLY.

The membership List is over S23 menbers and we are working on that data base also. Again, as so00m as the method is fully worked out that List will also make it your way.

453

As a service to the membership a data base has been made avail— able that is an index of all the issues of SYNC, SunmcWare Neuss T.S. Horizons, SUM, Time Designs, Timex Sinclair CUSAD and 9524 of Timelinez. This data base lists all the hardware and program Listings by type Calso cross referenced if necessarw and issue of which publication the article is to be found. This can assist im locating any particu- lar subject if it has been printed in those publications. Reprints of some of the articles cam be made available. For the currently publishing magazines you can contact the publisher for specific back issue details.

(meer aN nS EO,

SincLink INDEX "sti a"

1969 Moy 31 14:16:44 S89 _filesiz.. Tipi sn%_tis DF iienme_ext Bytes.. SPBIS31 148633 Words 1431s; {-—----_-—- --—-.. SineLinks; Neusletters; Sn893_dir 887627... Fi tenume.sn8%4 (5r893).. SnS93_lis 13354... ————- ScB98?_lis 39888.. For contact ~~ §x89188_doc 21376.. Sincl ink. : — §n88_ doc 6144,, c/o Bill Miller 488-703-3175 AnBsi_lis 212Mé..

6675 Clifford Drive i

Cupertine, CA 95814-4538 Sn892_dir 1631587... en rn nnn —_—— Sn892_tis 12077... (Hi lerame_ext Butess: Sx89188_ lis Words_i7387. Sn094_dir- 7777), Sne_lis 4080, . SnG34_ lis = 154? Se89202c_tis 4568"... SchHG_lis 481467., ( Se9782d_bas 1792.. Sx83t6e6_lis 28767.. | S601 lis 5@123.. ce | $589282a_lis 5757. ean nn nnn ScB9702b bes 53687... Gr894 tate of contents on (INSIDE) ::.. $n891_dir 89145... page, description... Sil lis 16738.., 2, SLIX contacts and nevus letter ScOS12 lis |= 35422... exchanges, March 1989 (467)., Sx86_ lis 17788... 6. HATS exchange neusletter.. SnB8_lis 4558 ..

+ °268 COMPUTING” by Ion i Sinclairs a book review by

Govid Bennett..

t 288 to GL CONNECTIONS by Dovid Bennett. :

ARTICLE DEAD-LIKE

MAY-JUNE 1989....... JUNE 11

‘ JULY ‘AUGUST 1989.... JULY 293 SrestihantninaRahteefo aban

INELINEZ —_ =

aa Ed Shaughnessy 181 Daniel Low 3E

Staten Island, N.Y. 10301 RY : | JOHN 0. EZIKE

WELCOME TQ THIS MONTHS COLUMN. ‘YOU HAVE PROBABLY RUN INTO & SITUATION WHERE YoU

LIKE TC MAKE A BACK-UP COPY OF. IF THE PROGRAM IS WRITEN COMPLETELY IN BASIC, ALL YOU NEED Tc STGP IT TS TO PRESS ‘BREAK’ (THE SPACE KEY:. HOWEVER, IF THE FIRST SCREEN YOU ENCOUNTER REQUIRES A NUMERIC INPUT, (YOU WILL SEE AN INVERSE 'L' CURSOR IN THE LOWER LEFT HAND CORNER OF THE SCREEN}, TYPE IN SHIFT 'A' (STOP) AND PRESS ENTER. ON THE OTHER HAND, YOU MIGHT BE PRESENTED WITH A STRING INPUT CURSOR (AN TNUERSE 'L' WITH QUCTE MARKS ON EITHER SIDE?, SIMPLY DELETE THE LEFT GUOTE MARE THEN ENTER 'STOP', IN EVERY CASE A REPORT

(ERROR? CODE WILi APRPERR IN THE s8oOTTOM |

The program presented here creates a modified LoaD command. It moves the routines needed for the LOAD from ROM into RAM and edjusts them to work there. The routines are changed so that when the LOAD | completes, machine language code from the 1 REM statement ts executed. By changing statement 1, you can completely control what occurs after the LOAD.

Background Information

When a program is SAVEd, the ZX/TS computer begins by writing a lead-in of five seconds of silence.

Then it writes the program name (“header"), followed by the four parts of the program: the system variables, the BASIC program, the display file (Le. the television picture,) and the BASIC program variables. When reloading the program, the LOAD command reads the tape until it finds the header

with the program name, and then loads the four parts

LEFT HAND CORNER OF THE SCREEN. You Of the ptogram into the Sompater,

CAN THEN LIST THE PROSRAN AND SAVE IT AS WILL BE EXPLAINED LATER OX It THE ARTICLE.

SOME PROGRAHS THAT SELF-RUN ARE WRITTEN IN MACHINE LANSURGE RED THE ABOVE METHODS WILL NOT WORK. Hii IS NOT LOST AND WITH THE FOLLOWING SESUENCE OF KEYSTROKES YOitl CAN NARE BACK-UP COPTES JUST AS EASILY. FIRST PUT YOUR COMPUTER INTO FRET MODE (SHIFT 'F' THEN ENTER:. YOU WILL SET R Ore

Two routines are used by the LOAD command. These ere the load routine (locations 0340-03Alh of ROM) and

the terminate routine (01FC-0206.) Every time the

load routine reads a character from tape and writes

it into the computer, it calls the terminate routine which checks to see if the end of the program has

been reached. When it finally gets to the end, the

: si : terminate routine does not return control to the — RE ORT rete RES DED aE ty TORE. | toad routine; instead, the code immediately after = FOLLOWING LINE: BOND US Sp 836. #400 NOT the routine {is executed. Normally. this is the .

PRESS ENTER WUST YET#3. ‘RAND’ IS OBTAINED | “SPI8y routine.

BY PRESSING ‘T', ‘iSR' FS OBTAINED BY PRESSING FUNCTION (SHIFT AND ENTER TOGETHER: ‘L‘. PREFRRE THE TAPE 83 YOU WOULD NORMALLY, PRISE TG LOADING IT. PRESS ENTER THEN 8 FR Pac + =LAY T GH YOUR TAFE i RECORDER.

iF THE PROGRAM LORDS SUCCESSFULLY YOU WO GET A REPORT CODE cg. fou CAN NOW LIST YOUR PROSRAN. Ih SRDER To aAUE & Cary THAT SELF-RUHS YOU HAVE To LOCATE THE LINE IN THE PROGRAM THAT HRD THE (‘SAVE' COMMAND. THIS WILL HAVE THE Form:

Xex*% GRAVE “PROGRAM MAME" THE xx“x IR THE LINE NUMBER ND 6 ‘PROGRAM

The program shown here moves the terminate routine and the load routine, as well as everything between them, to the top IK of RAM. The address of the assembler statements (the CALLs and JPs) are adjusted to work in the new location. Then, before ealling the LOAD command in RAM, the program moves the machine-code in the 1 REM statement into the area of RAM immediately after the terminate routine. This code will execute after the LOAD finishes. Two possible versions of this modified LOAD command will demonstrate what can be accomplished by carefully selecting the code tht is stored in the 1 REM statement.

SAVE the UnSAVEable

Suppose you purchase a self-running program and you wish to make a back-up copy. This is difficult or impossible to do the usuel way because as soon as

you load the program, ft executes, Verson Ll of the modified LOAD command solves this problem. We have seen that when the LOAD command in RAN completes, the code from 1 REM executes. {In version 1 of the modified LOAD, this code calls the keyboard scanning soutine until the “S" key ts pressed. Then the

address of the name of the program to be saved is ‘eet to a location in ROM that happens to contain an inverse “X." Finally, a jump is made directly to the — SAVE routine in ROM.

RECORE , “THEN ENTER GOTC <xxxX. WHEN THE | PROGRAM HAS BEEN SAVED SUCCESSFULLY, IT WILL SELF_-RUN AND YOU WILL HAVE MADE AN EXACT COPY OF THE GRIGINAL! IF YQU HAVE ANY PROBLEMS, WGUST REPEAT THE WHOLE PROCESS PRYING ATTENTION TC YOUR LOAD AND | SAVE VOLUMES BND MAKING SURE THAT YOU HAVE PROPERLY FOSITIONED THE ORIGINAL TAPE BEFORE LOADING IT. ALSO MAKE SURE YOUR TAPE RECORDER HEAD I5 CLEAN.

I HAVE ALSG INCLUDED AN ARTICLE IN ITS . ENTIRETY THAT APPEARED IN SYNCWARE NEWS NOV.-DEC. 1984. THE ARTICLE WAS WRITTEN By

EXPLANATORY. “IN MY NEXT ARTICLE I WILL SHGH YOU HGH TS AbD & SWITCH TO ‘YOUR TS eat PRINTER! HOES Y COMPUTING.

IMELINE?

Type in the program of version 1, Type RUN, ENTER. The ecreen will become white while the code.

: $

pattern will begin. At the end of the screen will go white with the report C/190

You now have a backup copy just like the original. To LOAD the copy you have just made, use LOAD “X". The program will run es soon as loaded.

= §

i REM E1CDBBO2ZEB21FDOFBA7 ane IDBeACaFCezceeseseeeess

SAVE A SELF-RUN PROGRAM

TO 929 oe T+A#256 ,PEEK TI

xT I LET B2R#*256+834 POKE

LET C#16S12+J¢42

17@ POKE J+As256+517, (e = )#IG+PEEK (C41) -28 vrEee hes

@S NEAT J 198 RAND USR B

—

LOAD the UnLOADable

Suppose last night you keyed in a long program and saved it on tape. Now you try to load {t. The

loading pattern appears for half a minute or more

and. suddenly the screen goes white for a few eeconds end an inverse K appears at the bottom. When you try to LIST the program, you receive a report @/0, indication that nothing was toaded. I'm sure all SyncWare News readers have encountered this frustration. There is a bad spot on the tape,

resulting in a drop-out. When the LOAD command reaches a silent spot on the tape, it jumps to the NEW command which deletes whatever has already been loaded, Since you have a program Listing on paper, — you would like to recover the program up to the bed spot on the tape, so at least you won't have to re- eater the entire program. Version 2 of the modified LOAD routine will load a tape up to the drop-out.

.Whea the modified LOAD command reads a silent spot

on a tape, it jumps to the area after the terminate routine which holds the code from our 1 REM statement. In version 2, this code de fer the load has gotten. If the bed

after the system variables and the BASIC program were loaded, whatever was loaded from Cie or program variabies area will be

455

if the drop-out eccurred being loaded, then the end BASIC Une is found so you fe unlistable because pert of missing. Finally, a jump is =m that will create an empty d program variables area.

et woa’t get lest

3 & : f 5 :

Type in version 2 of the oe

After saving {t for future use, enter RUN; the screen will turn white while the routines are moved inte RAM. When the loading pattern appears, start the tape recorder in PLAY with the bed tape. The loading pattern will continue until the bad spot on the tape is reached. Then the screen will go blank for a few seconds and then display report 0/6. You can now LIST. If the program {s not complete, type in the missing statements.

i REM EB2ASC483 7EDS22A8C4038O AEBS 10OGOSE 76EDB92323C30304

LET B-As256+834 POKE 8,55 B+7,A4+3 8+32,6 B4+33 ,At2 B8+38 ,A+3 B+68 ,At3 8+64,A+¢1 FOR J=<i TO 28 LET C<§1651i2+J342 170 POKE J+AR#2564517, (PEEK C-28 I416¢PEEK (C41) -28

18@ NEXT J 198 RANO-USR 6

Final Words

The value in A in statement 30 determines where in RAM the routines are moved to. Readers with RAM ina the 8-16K block can change the value of A so that the LOAD command is moved to an erea safely outside the usual 16K RAM aree. Then even the largest programs being loaded in will not overlay the

routines In RAM and cause a crash.

Readers with disassemblers that reside in the top

part of RAM (e.g. Bug-Byte's ZXDB) may also set A to a different value to avoid a conflict. Make the following changes:

30 LET A=96 Delete line 190

Run the program to move the routines to a location in RAM that won't conflict with the disassembler. Use the disassembler to view the assembly code tn locations 61FC-621E and 6242-62A2.

For a detailed explanation of the LOAD command, see “The Explorer's Guide to the ZX81 and Timex Sinclair 1000" by Mike Lord. Another book thet is valuable for anyone wanting to understand ROM routines is “The Complete Timex TS1000/ Sincleir ZX81 ROM Disassembly" by Ian Logan and Frank O'Hare. I hope that by using the program shown here, readers will discover other useful changes to the LOAD com mand,

Se TAPS TE SATE TA EO OT EOS NLD EI ETE IE

INELINEZ NEWSLETTER EXCHANGE 456

From the Sep. 88 N/L of the Sinclair Louisville Users Group.

From the Jan. 89 QZX N/L.

TSi000 TAPE UNLOCKER Tim L. Ward

T/S 2866 COLOR MONITOR OLFFICULTIES KSXY Here is a short program which will permit vou to make backup tapes

Some hams have difficulty using of non-standard beginnings or ends. some color monitors with the T/S 28068. First, type in this very short There are very good reasons for these POKE routines difficulties. If the usual standards are not follaved, less than perfect 10 REM 612345676 quality results. The trouble is 20 FOR X@16514 TO 16522 deciding what are the usual standards 3@ INPUT A when you are trying to build a 40 POKE X,A computer which can be used any place in the world. Then RUN this short program entering

Timex had to work hard to adapt the following nine numbers when the the TV output of the Spectrum to the program pauses for them in line 38. US broadcast standards for use on our 62,0,56,0,64,1,55,0,201. After the TY sets. The adaptation was aot numbers have been entered line {@ perfect. should look as shown below:

The following table shows the angles at which the color vectors are 16 REM YM RND R TAN produced by the 1T/S 2868 and the angles which are desired by the usual : Now add the rest of the program oe vere : 20 REM TAPE LOCKER PUBLIC DOMAIN

LIBRARY OT TIM WARD snhitsab ln thitenecd nel Grece ae | 38 SCROLL PHASE = T/S_ 2868 ~NTSC STANDARD cee: degrees degrees 6@ POKE 16526, CODE NS(LEN Ne , - ¢ Blue 350. 358 7@ LGAD i Modems NS-1)¢CHRS Magenta 64 é2 B@ REM NO MORE WORRY ABOUT TAPES Red 116 "112 THAT WON’T LET YOU MAKE COFIES OR Green 242 248 LISTINGS Cyan 284 224 9@ STOP Yellow 178 70 106 SAVE *UNLOCK* Reference 224 180 11@ LIST There are also three other difficulties which cause some monitors Larken Program Tips by

to give less than perfect performance.

e Color bust sychronization. The color burst is not synchronous with the waveform because it {is generated from the 3.579545 MHz crystal and the waveform is derived from the 14.112 MHZ crystal. The result is observed as

Rod Gowen from the April 89 Plotter N/L of Clackamas County, OR.

Here are a cople of program tips that I

thought you might be able to use and

Ale a CEMEEA EEN: BREN: RF that might save some of you sore tire. I 2. Color burst surat lenis spoke to Larry Kenny and during aur caon-

The color burst duration on the T/S

2068 is 8 1 hit tandard TV saga me whey s cycles white standar broadcast stations provide 9 cycles. why a i long = gg Age with This short burst is a problem for some his COPY A DISK in the : si eral monitors. when it could be done a bit faster with sili ee = ones uy a hh kde Byte-Power’s utility. He told me to look est starts 6.4 microseconds from the leading edge of the syne at the basic lines in his OOPY program pulse. any monitors are designed to and to change all of the PALEE values expect this start as early as 5.3 that appear between lines S190 thraugh microseconds, thus these monitors may ae | t through changed them ae ee oeuce color when attached to the Hei atu of 1 pee DIFFERENCE! pe 68. 2 ‘ . 3 hope this Information is may not be as fast as machine code, but helpful to those who are having it does do it in half the time.

monitor problems with the T/S 2868.

POTENTIAL NEV MEMBERS

PLEASE COMPLETE THIS INTEREST CARD BELOW AND SEND YOUR $15.66 MEMBERSHIP WITH YOUR CHOICE USER GROUP TO:

AMERICAN MICRO SYSTEMS 2173 bere Read $262 San Jese, C8 93121 (468) 270-3738

MEMBERSHIP INCLUDES FREE ACCESS TO THE POSE LIBRARIES AND A ONE

YEAR SUBSCRIPTION TO TIMELINEZ. USER GROUP MEETINGS ARE ALWAYS OPEN TO THE PUBLIC AT NO CHARGE. GUEST ARE HIGHLY ENCOURAGED TO ATTEND.

HAPPY COMPUTING......THE EDITORS

WANE:

ADDRESS:

ay TE 2 Pe PHONE: verti: |

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EVERY SATURDAY MORNING AT 9:04 4.1. STANFORD UNIVERSITY

JORORN HALL {in the QUAD

ROG SRC (dounstairs?

APRIL 1, 8, 15, 22, 2, 1989 MAY 6; 13; 26; zy 1989 SHE 3; 18, 17, 24, 1989

EAST BAY 288 USER GROUP 1619 GRANT STREET #6 BERKELEY; CALIFORNIA 94703 (415) 843-06?

JOHN EZIKE

FOURTH WEDNESDAY OF EACH MONTH, 7:38 P.. VEST BRANCH BERKELEY PUBLIC LIBRARY AT THE CORNER OF UNIVERSITY AND SAN PABLO. BRING EQUIPHENT AND POWER STRIPS.

FPRIL 26, 1989 MAY 24, 1989 JUNE 28, 1989

PENINSULA USER GROUP

311 MICHELLE LAE

DALY CITY, CALIFORNIA 94815 (413) 878-1773

GEORGE MOCKRIDCE WALT JOHNSOH

THIRD SUNDAY OF EACH RONTH, 1:68 F.A, PENINSULA HOSPITAL

1783 EL CAMINO REAL

BURLINGAME, CA

PPRIL 16, 1969 MAY Zi, 1963 ANE 18, 1989

TIMEXsinclair SILICON VALLEY USERS 6675 CLIFFORO DRIVE

CUPERTING, CALIFORNIA 9oal4

(468) 78-3175

BILL MILLER

LAST WEDNESDAY OF EACH MONTH - 7:38 PH. CUPERTINO LIBRARY BRING YOUR EQUIPMENT COMNITY ROOH GOWN ACCESS RAMP 10408 TORRE AUEMUE | LEADING TO BOTTOH OF CUPERTINO, CA 96614 | CIRCULAR BUILDING

APRIL 26, 1989 HAY 31, 1982 JUNE 28, 1%9

1. INC. TAMPA AND SUNCOAGT BAY AREA MICRO-

COMPUTER USERS’ GROUP, INC. 5956 467H AVENUE NORTH SAINT PETERSBURG, FL 33789 (812) 346-4278

ERIC BEST, GEORGE FEATHERMAN, WARREN REED

SECOND SATURDAY OF EACH HONTH, 7:38 P.M. BEACH FEDERAL SAVINGS AND LOAD

?7i? HORTH SEMINOLE BUG.

SEMINOLE, FL

APRIL 8, 1989

MAY 13, 1989 JHE 18, 1989

IMELINE?

As many of you have guessed, TIMELINEZ ence again has had a few changes. First of ail, American Micro has changed it's last name from “Connection” to “Systems”. This came about when a club member notified us concerning a former A.M.C. that claimed bankruptcy and left many angry customers behind. We doa mot wish to be associated with this defuncted company in any wou. Sa, our official title has been changed to American Micro Sys tems .

LAST VORD

Second; TINELINEZ has changed it's copyurtite format to non— commercial use omtu. Articles may be freely copied provided author and source is given pro- Per credit. We are also working om a separate account under the newsletters mame. This will at- low eacier access tao finances, from menbers and club officials, separate from A.M.S. ALL sub-— scribers will be motified when this takes place.

A.M.S. t |

Im the mean Lime ; will collect the

funds.

Thirds StncLlLink subscribers wilh receive their issue within this publication as a SLIX index omly. If your needs require ta have the entire monthlu files, please contact Bilt MNittler for further information. We are | experimenting with this format as a result of last months “Dieu | to fram Ram-Top™ article. 30

AMERICAR MICRO SYSTEMS 21/3 ABORN ROAD #262 SAN JOSE, CA 95121

one

ee 458

Fourth, after revorking our Archive files; we have been able to reinstate the month/year mark for subscription reneuats. We received many calls that this comba was extreemely helpful in reminding members when to renevus, it‘s camnesz Urvagpgt vat a simple lable cam day? orf aet

Fifth, poe oem we created a 788 logo for the front page to indicate our support for the 23¢ laptop. Now if we only had some articles to print about Uncle | Clive’ $s 2 pound microchip wonder we'd all be in business.

SATA ah aE IN TE TO,

Last month, we were marveled by Bob Orrfelt’s programming of the CHAOS algorithm within our TIMEXsinclair computers. Here it is for the @:. The program works but it is mg right. Your job, find out the problem and correct it.

OL CcCHAROS

WINDOW #1 ,512,256,0,8

CLS

FOR r=2.978 TO 4 STEP 2E-3 x=.3

FOR i=1i1 TO. 264 .......

x= kx C1—x

HEXT 1

FOR i=1i TO 366

x=r¥x* C1 —x>

POINT (1224r—-362> , (S@4x%+25) NEXT i

NEXT r

PAUSE

THE FULL FIGURE USE:

FOR r=G@ TO 4 STEP SE-3 Oo POINT C31 -25%r) » C75%x+25)

a i ‘ee ew we YS ———— . ue 4

gen a E.: Be Oy me “YQ Sgr “SN

ccecerre

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