N | | November Il V84

LIST GROUP PO Bok 438

L I $ T ; Centerport, N.Y. d dar 11721-0438

MEETINC:NOTES.(October 28, 1984)

III.

IV.

Old Business

a) See issue 10/84 for last meeting notes. b) LICA Membership.

et The consensus opinion was that we could see no significant benefit form immediate LICA membership. If we have enough (or almost enough) members who vish to join LICA, as individuale, the matter vill be reopened. In the meantime, newsletter exchange will continue and LICA meeting schedules will be posted in LISTing.

LICA meets 3rd Friday of each month at 8:00PM Room 508, Bldg. 500 at New York Institute of Technology, Old Westbury. Contact Al Levy at PO Box 71, Hicksville, N.Y. 11902.

Remember that LICA has Sig's for most computers, so if you have another make, you might join one of those.

Secretary/Treasures Report

The treasury is in good shape and ve still anticipate a small "dividend". Members should consider what sort of public service could be performed. Membership continues to grow with 8 new members being added since last month. Approximately 25 complimentary copies of the newsletter vere distributed last month. i

A P.O. Box has been rented at a cost of $20.00/year. Chuck R. was given $10.00 to purchase blank library tapes.

New Business

a)Software Library

Chuck R. will be making the "loop" copies of Library tape #1 (Version 1.7). The Cape now contains about 2 X as much material as version 1.0. The tapes should go out by early December.

b) Bob M. Will again update our membership data base. It's on TS/1000 ZX PRO/FILE.

C) A subscription to 16/48 was approved. (This is a Spectrum Magazine), Other publications donated by members, are ' available, as well, during the meeting. Corresponding members please note: postage on the U.K. magazines (and possible damage) precludes their being círculated. >

d) Dues Structure 3 Printing costs as well as mailing costs(nov $.37) are increasing rapidly. A dues increase to $15.00, effective 1 Feb '85, was tentatively approved. (The 1984 balance,even if carried over, would not cover all costs). Foreigh Subscribers rates will depend on postage, with a base cost of $1.00/issue, plus applicable postage.

€) General 1) Complaints relative to newsletter legibility continue, though at a greatly reduced rate. We make an effort to provide legible copy, but are constrained by the quality of both the original material submitted and our copy- ing machine. Time does not permit us to retype listings, Please don't use Timex paper unless that is all you have.

2) Herbert W, noted that besides Zebra's excellent BBS for Timex users, you can also get in touch with other TS owners thru: `

FAM 200 (Family Computing Magazine's SIC) Compuserve

CEM 450 (Computers & Electronics SIC) Wednesdays @ 10PM

Stewart noted that the Zebra BBS has had over 3000 calls from some 500 people, Note however, that the board will be down weekdays (9AM - 5PM) through Xmas.

3) A plea for 2068 hardware standards was made. The concept that even the address linea should be buffered in both directions (for DMA) was discussed, as well as the use of port numbers (e.g., 7E,7F for Modems)

4) It was noted that most British Publications take overseas subscriptions, The rate runs about $40.00/year airmail, much less by surface.

Next Meeting

Will be at Heinz H's - 9 Dartmoor, Northport, N.Y. @ 2PM. A map, directions and Heinz's phone number are given on the "members only" page.

The formal portion of October's meeting adjourned at 3:30PM.

Demos

a) Nazir showed us the DK'Tronics light pen, for the Spectrum. It's apparently 1/0 mapped and works, just fíne,

on a 2068. (So does a "true" Kempston Joystick - Ed.)

b) Jeff S. Worked for 3 weeks to produce the software for Zebra's graphics pad. Jeff demoed the system, which uses

Zebra's A/D interface, a KOALA pad and the 2068, and all were very impressed with the capabilities of this Package, Price, to members, should be under $100, depending on Zebra's contract with KOALA. See the press release, inside.

c) Another attempt at using "firstLoadr" failed, Remember to NEW before trying to load your 2X Program. And of course, volume is critical. An uploaded, but not fully functional, version of MEMORY (one of the demo programs which came with your TS 1000) is on the Library tape, Version 1.7,

d) Bob Gilder demoed his "ROM MODULE" which uses commonly available (Radio Shack) parts, to build a ROM-ewitching device. The construction plans are in this issue.

e) Chuck R, demoed his machine code checker program, a great technique for scanning (& changing) whole chunks of memory locations quickly.

f) S. Newfeld shoved us the OKIData Color Printer, $149.00. He's looking for someone to design an interface for TS 2068. Has anybody out there made an ATARI - or COMMODORE-to-TS/2068 serial adaptor? Interfaces for the OKI "10" and those machines are available for about $50.00, already.

8) Next Time - Theme for December meeting - Business Applications: e.g., Communications/WP

è LIST CR OUP ae d PO Box 438 Centerport,. N.Y. 11721-0438

IEEE u L.I.S.T.ing November <u £y» 1984 12/84 mm PAGE

Meeting Note® ...e.s..esosososososocsoseoeoossosossoosoooeo 1

Trdex.ccccccccccccccccccsccccccccctetscccetsssccsccccscccs 2

Hardware Review... .cccscesccccccceccseteccccccccccesccsess§ 3 ROMSWITCH (P. Donnelly) i

Software Special ...cccccccccccccccccccccccccccccccccccccce 4 HEADER-READER (N. Pashtoon)

Catalogs Received... ..cccccccvcccccccecccccccccccccccccccs§ Í HEX-DEC CONVERSION TECHNICAL-TIPS-TS1000

GROUP

Hints & TípS.....e ecce eee e ocooooscccceccccccececceccceccecee 06 TAPE HEAD ALIGNMENT (P.J.D.)

FUN SR! GAME... dic oist2 nis s ee eve T cose Tess soy vele ee ovs bee's 7 HORSERACE (R.Cunningham) BLACK MASK REVISITED

LAND

LONG ES

S "n Q J U c E

X u L H [-

Communications Corner (Modems)......... eee eee eee rn 8

Graphics Tablet... ccccccccccccccccccccccccccccccccccccccccs 9

Hardware Special... ccccccccccccccccvcccccccccccccccccccccs lO-1l ROM MODULE (R.Gilder)

Spectrum Software. ..cccsccccccccccccscccccccccccccccosccss 12

e m 4 $ | Li as roa aa » d > 3 z v -g r^ -s ir (D. Dewey) $2 LetterB..... eco oococcecccecccceccccccceccececceccececcceccceccee 13-15 e” "S 383 Members Only.o.ececscsescovccccsceecestececessececececececenco 1S z z v 4 - ws 2 x Ex 3i 2 3 $ we @Copyright 1984 by LIST & the original author. S oe . a 2 g Permission to republish the material in this g 83 3 2 g 4 : newsletter is reserved to the original author \ 29.2 3 5 3 S 2s and LIST*may be obtained, in writing, from fink 5 = 2 4 ' a either one, 2283 Bos S 8 H anao a 5 w se "020 u p s o VE 43088 A 39 w a e v «a kn o 7S 8 ss 3 S 8 a 2 1* NOTE: PARTIAL YEAR MEMBERSHIPS AVAILABLE | f a aas 8 g 5 iz ; 2 ' A Bu x 3 E s * 3°83 Normal membership year is Feb. through Jan. at,coets of $12.00, jae 9 ae v 5 wl as ' By keeping as many members as possible on that basis, ve keep a w 4 € z 8 3° 3: our costs and chances of error, down. E 5 $9 e 2 2 5 Bi. $3013 9 ud If you wish to begin subscribing later in the year, please sign g| s 2 s 9 r lu Dus up for the end of thie year and all of next. E.g., to subscribe wb. i " $4 in Nov. 84, ve ask that you remit $16.00, which vill cover you Fa] aes F R H i 2 through Jan'86, rather than send 4,00 now and 12.00 in Jan. z - «om ago one

(the rates may go up then also)

We will accept partial years or different subscription runs,

on a limited basis (partícularly from members outside the U.S.). But, please be aware that addition to possible rate increases, your "account" must be handled "by hand" and errors may occur.

Newsletter Policy

The result of a series of voice votes has established our newsletter policy. Specifically;

1) Requests for information providing an SASE, will recieve ] copy of the current nevsletter , at once. Further requests will not be honored from the same individual.

2) Requests not providing a SASE will be beld for reply by the corresponding secretary or

another officer. While we are non-profit, ve would also like to be "non-1oss" and cannot

afford extensive free mailing. It was decided however, that in the public interest, a copy

of a newsletter(probably an excess and/or obsolete issue) would be sent to such inquiries.

3) The individual newsletter price to non-members will be $1.00, plus postage

Requests from bona fide user groups will be honored as long as newsletter exchange continues

(we currently correspond with 4 groups).

Members who join during the current club year, will pay full dues:

issues to the beginning of the club year (February to January). A member joining in September 84, then, would receive seven back issues as vell as issues for September ‘84 through January %85.

6) Advertising It vas decided that LISTing víll acce Pt paid advertising if asked. W not solicit ads. Any finds obtained in this vay vil] be kept : ivi.

separate from the general fund and their use will be voted upon separately. d

$12.00, and receive all back

PRO/FILE UPDATES

Here's an except from the latest issue of Toa Wood's updates publications

LIST GROUP

HARDWARE REVIEW

PRODUCT: ROMSWITCH FUNCTION: SPECTRUM COMPATABILITY FOR: TS 2068 ONLY FROM: RUSSELL ELECTRONICS RD #1 BOX 539 CENTRE HALL, PA. 16828 PRICE: $55.00

As most 2068 owners probably know by now, you can gain access to che hund- reds of Sinclair Spectrum software titles available for the U.K., by changing your 2068's ROM (Read Only Memory). This can be done in a number of ways, and one, quite elegant, method is the use of Russell Eléctronics' Romswitch.

Romswitch is a small (2"X2") double-sided P.C. Board on which is mounted a Spectrum 16K ROM chip, a glass - encapsulaced, miniature magnetic reed switch, à pair of pullup resistors, and a socket for your 2068 Home ROM. The board layout is straight-forward, with a one pin offset between the chips allowing for clean trace runs. Despite che use of one short jumper, the plated through holes on this board indicate a desire for high quality design and construction. In fact, Bill Russell tells me that he has rejected more lots of boards chan he as accepted, so far, in order to maintain the required standards. The final component of ROMSWITCH is a small "button" magnet mounted on a an adhesive backed slide. We'll talk about how that functions later.

Installation of ROMSWITCH requires only a Philips and regular (slotted) screw- driver. It involves opening your 2068 case to install the board in the 16K ROM socket. The procedure is simple and is described in detail in the accomp- anying 3 pages of documentation. Having installed several Spectrum ROM's myself, I think I can say that the documentation is quite complete and should allow virtually anyone, with a reasonable amount of manual dexterity, to perform the installation.

After installation of the ROMSWITCH Board inside your computer, you must install the button magnet "switch" on the top side of your keyboard, I had to exper- iment a little with placement of this switch, But, as you can move it around to your hearts content, prior to removing the adhesive backing, it should pose no serious problem in mounting. In fact, if you listen very closely, you can actually hear the contacts close as the magnet 18 brought close to che switch assembly, Try this outside the machine first, so you know what to listen for.

Once the "switch" is installed, you can switch back and forth from Spectrum to A TS 2068 (with the power off only!) to your hearts content, This is the singularly outstanding feature of ROMSWITCH over the other conversion methods. With Doug Dewey's EMU-1 (Chameleon) you must insert and remove tne cartridge board, each time, With simple ROM replacement, you'd have to open back up tle computer and reinstall the TIMEX ROM.

Each method has its pros as well as cons, though. The Chameleon, for example, requires no tools and leaves your warrantee valid, while direct ROM replacement needs tools, like ROMSWITCH, but costs less than $20.00. Meanwhile, ROMSWITCH

gives you a way to switch back and forth, without opening and closing anything and without drilling a hole in the case for a switch.

Pro/file Updates is published & times a year, in January, April, July, and October.

Subsciption rate is $9.95 annually. Edited and Published by: Í

Thomas B. Woods P.O. Box 64, Jefferson, NH 03583 (603) 586-7736

1a er .

The one weakness of the ROMSWITCH is that same magnet "switch", or rather its ib I found that mine started to slide around the case after a à baal

adhesive backing. while, Make sure you really clean the intended application spot well before applicacion and even then, keep your fingers off-the switch when the power is on. This shouldn't be difficult as it is the only "key" which slides co work, rather than being depressed. The actual magneticswitch is "snap action" and if the magnet is too far away will always "come up" in one mode (TS 2068 with my version) or the other.

The only other minor turn-offs with ROMSWITCH are that the Spectrum ROM is soldered in and has pin 27 cut off, making ít difficult to reuse either the ROM or the board. Also, you will be using just a líttle more power with ROMSWITCH installed, as both chips will draw juice. This last is true of the EMU-1, as well. j*

- Vu ^ Overall, I give the ROMSWITCH a 9 out of 10. Quality and convenience are high, but so is price. I'd also like to see a kit and/or "bare board" version made available, ROMSWITCH is a viable contender in the field of "SPECTRUMIZING" your 2068, and may just be what you're looking for. :

P.S. While I strongly recommend that you do not flip the switch with power on, I tried it anyway. No harm done (except loss of program), but you might

initiate bus contention during contact bounce and that could lead to loeeing a chip. A report from the West coast indicates they may have had problems

this way, Also, don't forget that SPECTRUM ROM's often (about every other time) get hung up during initialization. If this happens, restart your machine.

P.S.S, One more ching, which I didn't have time to check out before press- time, is the effect of that magnet on your tapes. I noted, to my horror, that while using my nearby TS1000, I had placed a prerecorded tape on the

* 2068, right on top of the magnet. I'll report on any damage this might have done after I 'scope' the tape output, in the next issue of L.I.S.T.ing.

Suffice to say, everything should be safe enough if you don't put tapes on your computer. This is not a good practice anyway, because of the magnetic fields already produced by the machine.

230 CHIP REPLACEMENT

PRO/FILE i UPDATE

UPDATES

I am about to launch a new subscription drive. My goai is to boost circulation over the 1000 mark. I'm asking you for some help in accompl this. If you ever "shared" a copy of ZX Pro/File with a friend, ask them if they'd like to subscribe to Updates. You know and I know that they are missing a lot if they don't get it.

If you always guarded your Pro/File and directed anyone who asked for a copy to get one from me, | appreciate the respect you have for my work. But now I'm going to ask you, why not cut a copy for a friend or two. Show them an issue of Updates so they can see how much more they will get if they subscribe to the newsletter. The re- sult is that everybody wins. Friends get a ` free copy of Pro/File, i get a new paying subscriber, and you get a newsletter that

gestion to replace the 230 microprocessor ed crashing problems works.

is a much beefed up version of the 230A.

It costs a little more, but is able to handle severe loads on the buss.

The 23808 is available from Jameco Elec- tronics, INC., 1353 Shoreway Rd., Beimont, wae (Phone: 415-592-3097) Price is

matter of pulling the old one out and ging the new one in. pug-

Many readers reported that last issue's sug- Chip inside the computer to solve unexplain-

Tom Bent, the illustrious editor of SyncWare News suggests that the Z308 pedis ng chip

The 230 chip is plugged into a socket on the TS1000 circuit board. Replacing it is a simple

is financially sound, widely read, and able to provide you with articles from a broad range of reader interests.

While it is impossible to guarantee that this procedure will solve your specific problem, It is, for the cost, worth a try. Who knows, maybe you'll get lucky!

HEADER READER - ADAPTED BY N, PASHTOON

You can use this program to see the "header" information which tells your c uter whats on the tape its about to get. id

Just enter this program and RUN, Then take the tape you'd like to analyse and play it into your computer. As soon as the header finishes, VIOLA! a description of the program, or code,vill appear on the screen.

There are septrate versions of the program for TS 2068's and Spectrum. Make sure you use the right one,

TS 2068 VERSION

10 GEM .PP2GR5, HERDER READER; | NAP

SPECTRUM VERSION

+4 crea Sosa .10, 1334 : YA 10 REM :PR . ^ ^ > 40 LET j232765 LET head=j+sS io PEN @ Nae AUST ae 1954 5^ (52 DEF FN gí(x) sPEEK x+2S564FEZh 30 REM CLEAR 32767 ^ 7T 50 RESTORE ] 18 REM LET 25327 28 PBRTRES To 44, READ coge ,,i10 REM LET j=32768: LET heads; (jeN' code: NEXT n 45 LET j=28000: LET headijsli 90 DATA 62,0,55,221,23.42,1285, ÉN gx) 52 17,17,0,242,245$,219,255.203.255. jt QNO PERI KARAS CEES 11:244.441.205. 252.0198, 11. 128.2 $8 REN FOR 11,244,218,255,203,101,211,255.2 gone FURORES TELEE; READ. tog 51,2019 75 FOR n=@ TO 13: READ code 110 POKE head, 30 REM DATA 221 35.42. 123 17 12€ PRINT AT i8,8;"start the ta 2,9,243,245.213,269.203, 285, 211] 255,218,244,50.41.128,62.1. e bep Ro REEL E EROR 158 fg tupe =PEEK head | /219,255,203, 191,211,255 2512 6 = 95 DATA 55,62,0,221,33.110.1 170 FOR nsi TO 1 ,17,17,0.205.88,5,201 A

e 180 LET n$zh$«CHR$ PEEK (headen n 200 PRINT "Prog. Name » “Shs INT

210 LET hdlenazFN a(a«11): LET ^ Min g(a*13): LET hdvars=FN 9 230 TE notype THEN GO SUB soc. Se oe PRINT "Program is in BASIC” PRINT .

310 PRINT ,hrogeam area »"ihdv

; byt 320 PRINT “Variables area »";v ars; bytes": PRINT 330 IF hdadro10000 THEN PRINT " nece is no autostart !": GO TO

340 PRINT "Line z for autostart »";hdadr: GO TO CENT DR d ezi T 2 mbe? erage” *1 THEN LET b$z"Nv hdtypez2 THEN "C $636 en pa ST . LET nee à

PO pox Ue Centerport, B.Y. 11721

Beer LIST asaber: This 1$ a chaia jetter. WMewever, it's like meas you've ever received before. This eae provides something of valus right eway.

Ae you haov, several ef our members are "correspoaéeace only", mesaiag they cannot ettead our monthly meetings. Those of us who normally attesd can't make every seet- fing either for verious ressons, as well, sad fisally, we've noted that s Tot of seet- ing tise is wasted os meabers exchange their bome-eede software or mena selections free our library ef public domain software.

le en effort to get the widest distribution possible ané save valusble time, I've come wp with this “houad Robina” software exchange. Atteched, you will find two casestta tapes, One contaíos Library tape fi, the other is s blank C-60. Please make your ovo copy of library tape 9) (this vay you'll be using your equipment and Your tise only). e

rem you have to the blank cassette.

Ment, we request that you adé e copy of some p! Please put at joast one progras on the cassette, and feel free to use wp to 1$

tth ef tape if you vant to share sore. You should provide at least some ry éocumeotetion for the program(s) end ote the source (¢.§., your ovn work, a friends, copied fros à magasina, etc.). Also tell ws whether the progres 1s fos T$ 2068, TS 1000 or Spectrum. Make eure you advance the "blank" caseet the lest meabers contributions before you start to &éd to it. Again, yov el et least one working propras oa the cassette (length te immaterial, es ie getter). You Bay pul a &oR-vorkiag progres oñ the tape, as well, if you'd bike to have the rest ef ovr "experts" try to ve a problem. Agsin, provide all the doc- wmentatioa you cae to help our troubleshooters.

Commrcia] program copies may be eubmitted as secondary programs, also, but under the following restrictions. 1) The copy is the only one you make (for mov). 2) Yew do sot use the original vati] the copy ie returned to you (or we tell you it has been destroyed).

we should cot be violating anybody's copyright end each of the other review en interesting piece ef softwere. If it te someone dove the line will review

la this way, members ín your "loop" pete to pi e really isteresting program aad/or tiss permits, it for LISTing.

Bach “leop™ will eseaiat of ) grow members asd heme bese ( — P.O. BOL 4M , fer mew). Please try te hoep the tapes for lees thee | calenéder weet and then forward thes te the asst member in your loop. Cress your seme off the joop list ae pou do eo. The choice of postage rete is wp to you (but remember, ve'l) rus the loop backwerds, sometimes). One-way Postage, by the wey, ie the only expense involved im this echems, se it is the lowest cost altermative ] could thiah of.

As programe accumulate, ve vill create Library tapes 62,),etc. (from yours aad other leops), and coetíaue the procedure. We will move people between loops et

their owe request, of as they express interest is differest types of programs. | eee this as the framework from which we can establish SIC's (special taterest groupe) withia evr club, Exasplee of SIC's would $1000 only, Chess and otretegy game players, Spectrum only, Arcade games, bus &, aetromony, etc, Of course, if yov veat to drop eut of your loop or the progres as a whole, simply aote it on your forverding form aad send it slong. The only cost will be the one-time, one-way post- age. (lf you have & probles with that, drop me a line aad ['1] figure something eles out).

|l eee thie ove at and relatively isexpensive opportunity to exchange information and get to know h other. We would appreciate your comments on how well the eysten works (or doesn't) end vhat further improvesents we coulé make.

Your first loop list is attached. Mope to bear fron you seen.

Very truly yours,

P.S. Library lape 9] is ali TS 2068.

S30 PRINT “Program i ki" ! " PRINT. 9 is à ,b$: A hdtypez3 THEN PRINT "Bin - ary code start adr »";ndadr: PR nass. MEER hier Length is pns lt has come to our attention that one, or perhaps two of the library tapes (a copy $56 &eTORN of 1.6 and one of 1.7) may have the wrong "tower" progran........ 1f the copy

1000 PRINT FLASH 1;AT 18.8;"This i$ NOt à tape header” ` 1010 PRINT FLASH Q;RT 19.1; “Are MEOE yos game for another try ?iysni” 020 PAUSE O IF INKEYS$=e"u" THEN

you received has any other program besides "Tuerme Vow Hanoi" (towers of Hanoi, in German), please do not use it. The other program was placed en the tape, ín

LIBRARY TAPE

However,

We still need documentation for the programs members have vrítten themselves.

There were complaints about the lack of same during the last meeting.

consider the folloving:

even more support, in that they may contain "offbeat" pro- and solutions which can be of help to

3) Translated programs (e.g., from Microsoft Basic) require gramming techniques

Few of these programs connot be

Part of the fun of "playing" with our computers is the

joy of discovery. figured out, wíth the help of the manual or a call to

a friend.

the novice only if thoroughly explained.

subscribe to the

original publication in which the program appeared.

2) There may be some members who don't

oo lAl

In most cases, if you don't have the magazine (book etc.), you probably won't be able to use the software,

HEX 0 1 2 3 4 5 ó 7 8 9 A B c D 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 1 16 17 18 19 20 21 22 23 24 25 26 27 28 29 2 32 33 34 35 36 37 38 39? 40 41 42 43 44 45 3 48 49 50 51 52 53 S4 55 56 57 58 59 60 61 4 64 65 66 67 68 69 70 71 72 73 74 75 #76 77 5 80 81 82 83 84 85 86 87 88 89 90 91 92 93 6 ?6 97 98 *9 100 101 102 103 104 105 106 107 108 109 7 112 113 114 115 116 117 118 119 120 121 122 123 124 125 8 128 129 130 131 132 133 134 135 136 137 138 139 140 141 9 144 145 146 147 148 149 150 151 152 153 154 155 156 157 ^ 160 161 162 163 164 165 166 167 168 169 170 171 172 173 B 176 177 178 179 180 181 182 183 184 185 186 187 188 189 C 192 193 194 195 196 197 198 199 200 201 202 203 204 205 D 208 20? 210 211 212 213 214 215 216 217 218 219 220 221 E 224 225 226 227 228 229 230 231 232 233 234 235 236 237 F 240 241 242 243 244 245 246 247 248 249 250 251 252 253 CONVERSION OF HEXADECIMAL TO FFFF, OR 65535 IN DECIMAL (with above table) Hexadecimal Decimal Hexadecimal Decimal 100 256 1000 40965 200 512 2000 8192 300 768 3000 12288 400 1024 4000 16384 500 1280 5000 20480 600 1536 6000 24576 700 1722 7000 28672 800 2048 8000 32768 900 2304 *000 36864 A00 2560 A000 40960 B00 2816 B000 45056 coo 3072 cooo 49152 DOO 3328 D000 53248 E00 3584. E000 57344 F00 F000 61440

CONVERSION TABLE OF

— ——————

CATALOGS RECEIVED VENDOR

John Oliger Co

11601 Whidbey Drive Cumberland, In. 46229

WMJ Data Systems 4 Butterfly Drive Hauppauge, N.Y. 11788

Biocal Software, Inc. 167-C Wilson Street

Petaluma, Ca 94952

Computer Classifieds

PO Box 344 Leola, Pa 17540

Memo Tech 99 Cabot Street Needham, Ma 02194

3840

PRODUCTS

2068 User Cartridge

2068 Expansion Board 2068 Eprom Programmer

Business Programs ('68 x 1000)

Quicksilva Games (2068)

Backgammon

Checkbook Stock Market Game

Buy, sell & Trade Computer related

Items - All Classifieds

Trade in your Timex or

Memotecl Peripherals for

their new computer!

HEXADECIMAL TO FF, OR 255 IN DECIMAL

E 14 30 46 62 78 94 110 126 142 158 174 190 206 222 238 254

"ifia. 2X81/TS 1000 200 oa PARI. Here's some 2X/TS 1000 technical info we received in exchange for our i à sty rut letters. Three's more and it will be available at the next meeting. This TREE came from Jess Peeler, in Costa Rica. k

ge ade

Technical Comments relating to Sinclair 21-81 and Tinex-1000 Computers and pae K External RAMs (Based upon observation of approx. 25 each m P.C. Boards are identified as issue l or issue 3. Both versions &re found hi in ZX-Bls/only issue 3 is used in Timex, Electrically, they are ajmost disi identical. Issue 3 is tn improved layout with neater appeeranans:s! :;: ; re A 2X-81s have I.C.s mounted in sockets. Timex versions gas RAM chips in place, a All 2X-81s were built in England or sold in kit form. Most Tinex were tasa built in Portugal, but some were built in France. Us ty OY oe De eg uo

Quality control was highest on ZX-8ls. Poor quality control was observed :

on Timex units, particularly those mamfactured in Portugal. Fabrication pus. defects nost observed were faulty installation of the flexible P.C. "fingers"

from the keyboard into the special sockets. This defect has been observed in PIS almost 100% of Timex units manufactured in Portugal. Un-soldered or incos-

pletely soldered ground busses were observed in both Portuguese and French "m units,

I.C.s: 411 units use an SCL (Sinclair Corputer Logic) special purpose chip 2 «s manufactured by Ferranti - ULA2Cl84£. (Ferranti will not even ack- - nowledge letters requesting info or cost)

A11 units use a D2364C ROM non

CPUs vary. ZX-8ls have NEC P12308-151 or D780C-1. Timex uses Zilog 117% chips.** Al) are 2-804 chips in one form or another.

RAMs, internal: Most variation is seen with the RAM. In the 2X-81,

only 1K of RAM is built in. The P.C. board was cleverly designed to ums use either 2 ea 2114s or a single 4118. The 2114 isa 1K x 4 Static RAM, whereas the 4118 ts a 1K x 8 Dynamic RAM. ha

Timex internal RAMs are all 2X, in various versions from different manufacturers, i.e., Toshiba 2016P-1, Motorola 204 38818C, NEC D4016D-1, Toshiba TMM 2016P-1. ES S Transistors: ZTX-313s are normally used. I have found uMPS-2369s mounted in one computer, Also, I found that an MPS-3563 works quite well as a substitute, LOAD/SAVE modifications: Change R-27 to 27 kohms and C-11 to 0.015 nfd. -—— oom -— ———— wm o — awe cmc aos m 16K Ext RAMs

P.C. boards are identified as issue 1, 2, or 3. Issue l and 2 are Composed

of 2 sm1) P.C. boards that are folded inside the cars; differences betioen gee Mn issues 1 and 2 are minimal - an additional diode and de-coupling capscitcr. Issue 3 combines many logic functions in a single Ferranti ULAIHO35E chip DET to reduce I.C. chip count by 5 - and a single P.C. board is used, mounted DOE. in the same case. (Ferranti won't answer any questions on this chip, either) .— —Ó— Transistor is either a ZTX-750 or ZTI-752. Recent French and Portuguese Mee units used either a 2N6727 or MPS-6727, ^ MANT: Wobble is often a problem - varies with units. The French units utilise a - =- « upiiiuka. P.C. connector that has the tightest fit and, consequently, the least maim Py wobble of all units observed, "os i NS Tu EE | ** Unfortunately, 2X-80 and 2X-8l were chosen as names of Sir Clyde's ae ae first two computers. There is a tendency to confuse these designa- siia SS

tors with 2-80 and 2-804, which are CPUs. Therefore, remenber that Z-A is a Zilog designator for their à Mis CPU.

LÀ IST T Group

11/8 4

ALIGNMENT TAPE - SCREWING YOUR HEAD ON STRAIGHT

ALIGNMENT

Here's a prototype for a TS 2068 tape head alignment program, We're filling an array, AS, with first "" (or nothings) and then COPY (or 255). The idea is to get first a string of "Ó"s and then a string of 'l's onto our test tape. Note that 255 is FF(hex) or: 11111111 Binary.

You could make the program run even longwby DIMing A$ to 30,000, or so. It should work for ZX81's too, but you'll have to DIM AS a bit smaller.

Enter the program, as shown, and then RUN it. The data has now been placed in array A$. Now, using your most reliable tape recorder, SAVE the program a few times. (You-could even do this from within the program, and use an autorun to make it "load", several times too). You have now created a tape which has data recorded on it by your "best" machine and you know what the data means. Did you notice the distinct pattern differences your new "alignment" tape made on

the TV as you saved it?

pe back on another (suspect) machine observe the pattern

When you play your ta 1f they don't look the same you know you have an alignment

for the same lines. problem,

Adjusting the alignment is done with a small Phillip's head screwdriver. Put your alignment tape in your tape recorder and press "play". "LOAD" the program into your computer and observe the screen, With the player running, insert your screwdriver into the small hole next to (usually on the left of) the recording head and begin to adjust the screw first one way and then the other. The screw 18 often coated with a small amount of red "nail polish" to both secure it and show signs of tampering. Only small adjustments should be necessary.

If you have an oscilloscope, you will be able to see the actual data pattern and can adjust for maximum gain (V5 v pp). Next best is a "Wink y Board",and its indicator LED. Finally, you could even use your ear to listen for the maximum sound level, as you turn the screw. Hook up an earphone in parallel with your com- puter using a "Y" adaptor in order to this. At least one of these methods should be used in conjunction with observing the loading pattern, This tape will serve as a reference point for your system. If you ever have to realign your heads in order to load a tape, ma get "back" to your ideal alignment using this tape. made on your best machine and this still doen't quarantee perfect alignment (i.e., with other peoples recorders).

Do remember that the tape is "universal"

[ AnTz

ADM a On

o 2 u

ig ene j = g oR zac — ay: NEXT 4500: LET a$iiiccHpf ø za FOR ; S000. ` ; id=" COPY por BRP eee

de on another machine, you can always

The following Spectrum, 42 Harefield Road, Chean of their members.

**MEMBER'S HINTS ANO TIPS. **

So many members have sent tips for the newsletter we would need 8 pages to list them all! It's been quite a job to try and check them all and pick out the tups to include. Our thanks go to ALL who have sent tips. All the contributions published will gain free hire vouchers for the respective member.

LET a=USR 3280 or RANDOMIZE USR 3280 or LET a-USR 3582 Scrolls the screen display up one line, use a FOR-NEXT loop to scroll several lines.

LET astiSH 3330 Scrolls page to top line

LET a«USR 3583 Scrolls bottom half page, one line. LET a=USR 3652 Clears top half of screen

POKE 23562,1 Fast auto repeat.

POKE 23561,0 Disables auto repeat

INK 9 Sets INK to contrast PAPER colour POKE 23736,181 When making multiple SAVEs, eg with

several blocks of data in a programme, add this instruction between SAVE commands. The SAVEs will then be carried out automatically without the need to ‘Press a key! between each one. It sometimes helps to also use a PAUSE command, as the programmes will be very close together on the tape.

RANDOMIZE ns Is equivalent to POKE 23670,n-256xINT (n/258),POKE 23671 INT (n/256) A useful short cut to those 2 byte calculations. PfEKing those addresses vill provide the neede figures without any human intervention.

An interesting and rather ‘pretty’ bug exists in the way the DRAW command executes it's arc making facility. Try this short routine.

10 INPUT "Any odd number" sn

15 CLS

20 PLOT 75,50: DRAW 100,100,PI*n

30 GN 10 10

Having RUN this programme, try adding the following line. 5 OVER 1

Try INPUTing these numbers. 253,237,375,275,287,157, and EXPERIMENTS

POKCing the MODE system variable immediately before an INPUT command will change the character of the cursor. Try these. POKE 23617,142 POKE 23617,240 POKE 23617,252 POKE 23617,253

Poond sign £ (CHR$ 96)

Dollar sign (CHARS 36)

Less than sign (CHR¥ 60)

More than sign (CHR$ 62) followed by less than sign (CHR 60) Flashing blank square

Question mark

POKE 23617,238 POKE 23617,223 POKE 23617,190 The word USR (CHR$ 192) POKE 23617,192 The word BIN (CHR$ 196) POKE 23617,208 — The word DATA (CHR 228) Ay interspersing a CHR$ number between two strings for PRINTing intersting and useful relationships may be produced. i.e. PRINT "X";CHR$ z;"Y" Set variable z as required, and change in the prog. i.e. z * 8 is equivalent to PRINT "x","v^

z = B is equivalent to PRINT "X" then PRINTing

"Y" on top of it. 2 = 9 is equivalent to PRINT "X","v" 1 = 13 is equivalent to PRINT "x"'"y"

10 PRINT (((PEEK 23732.256*PEEK 23733) «1)/1024) -18

This PRINIs the memory size of your SPECTRUM exactly.

Hints and Tips come from National Software Libra » Surrey, ,SM2 7NE, UK and were submitted by sia

‘PRINT 3462:

POKE 23624,120 Gives a BRIGHT window st bottom or

screen (Lines 22 & 23

PRINTing to the bottom two lines may be achieved with

PRINT 4f1; AT 0,03 (text or variable) for LINE 22

PRINT M1; AT 1,0: (text or variable) for LINE 23

(This can be used up to PRINTett) AT 22,313 )

gives normal screen PRINTING, and

PRINT#33 is the same es LPRINT, Therefore, the

instruction PRINT ng: can be: dnc luded in s programme

to give bottom line printing, nomal screen printing

or LPRINTing, depending.or, ifa:velue of 'n'. This ses and j T

LET t«7997-USR 7997 «his Gives the number of thms of a second it took far a key to be pressed. (Just PRINT t for the result M

For a = 0 TO 255: OUT 254,a1NEXT a This causes an interesting BOROER effect, — — — — — — 10 BORDER 1: BORDER 2: BORDER Js BORDER 4: BORDER Sı BORDER 8: BORDER 7: BORDER O: PAUSE 1: GO TO 10

This also gives an interesting BORDER effect, try altering the length of the PAUSE.

LET a = USR 1278 gives a LOADIng pattern, Try these other numbers as well. 1248,1251,1276,1301,1303,1305, 1306, 1308, 1312, 1314, 1315, 1490, 1491 , 1492, 1409, etc, etc LET a» PEEK 23613-2: POKE 23613,4 This will disable the 8REAK key.

POKE. 23692,n ('n' = maximum of 255) This overides the "Scroll' message for "n' times, 00 A tip to spped up the play in 'Murder at the Menor’ 1. BREAK into the programme

2. LIST 330, and BREAK scroll

3. EDIT, and add at the beginning of LINE 330 RETURN 4, Type CO TO 80 and the game will be faster, by removing the colour paint routine in the or cs. JET SET WILLY - a few tips. f Instead of LOAD "" use PERGE "" Stop the tape as soo as the leader programme is LOADed, then add whichever of the following POKEs you want Into a new line 35. Then RUN, start tape again and play the game.

POKE 34785,n ('n' © the number of lives you went, uo to 30)

POKE 34795,n ('n' = the scree number you wish to star POKE 34794,0: POKE 34795,0: POKE 34795,0: POKE 34796,( POKE 34797,0: POKE 34798,0 (A11 these POKES must be entered if you don't want to go back to the BATHROOM each time) ^ POKE 34809,0: POKE 34810,0: POKE 34811,0: POKE 34812,0 POKE 34813,0: POKE 34814,0: POKE 34815,0 (Items collected will not re-set at the start of sech gama. ) MANIC MINER,

Bug-Byte version. Type MERGE "" instead of LOAD ™ and add this line. 25 POKE 35138,0 (This will give unlimited lives.)

Software Projects version.

Again use MERGE "" but add the following POKE to line 10, before the RANDOMIZE USR VAL .....

POKE_36135,0 _ (this also gives unlimited lives.) Finally, a routine to auto-run sechine code starting at address nn, a 10 CLEAR 65530: LET xenns POKE 65528, INT (x/298)* PAKE 85527,x-256*INT (x/258

Our special thenks to Keith Gibb, Stephen Lewis, T.

Mustafa,David Pickles,Ben Cons, Ardrew Bol scver Peter So bande Duet Fl lssaav PET) E Revell

E T S

fees

2068 bytes bytes free Prog.bytes

FUN'N GAMES

* HORSERACE *

1 REM !'URL * FREE !CODE * RET UPN ? RETURN 717 THEN 477 THEN A NO £U.7?7 “PEEK 8177 IF RESTORE

ILEN «N 7'7@ RESTORE !VA L > FREE NEU 70>78&7?

gSTR$ RESTORE !

VAL *? FREE LLIST RETURNS

2:CEF FH ai! sPEEK 23635+256+P EEK 22536457? PORE 23660,30: CLS GO SUB

E 23728,8: POKE 23729,7. 723,3: RANDOMIZE USR FN ER 7: BEEF 2,15: REM “W ES,20: POKE 23729,4 RANDOMIZE USR FN R 2;"PRESS ANY KEY

©£,@: DRAW @,178: DRA ^ ,-175: PLOT 2.68 : DRAYV 2 © R.J. Cunni

5: PRINT AT i.@: ; BRIGHT 1;" ü

K K 3

=O m epo mo

o =D nDh»OTZI Ter td

x Mw

D c KE

CADUN mumm - DHM

Iw- au i vo 3

9 F OVER i EXT i 10 FOR iz1 i, @; OVER 1, P

": NEXT i

: PRINT RT “BRIGHT 1;"

14 PAUSE 0: GO 9 15 FOR x=8 TO 7. RE

USE “+x, n: NEXT x 20 DATA BIN deonee0e, QOQ,BIM 1090011Q0.BIN O1 N 001211:10,BIN 80111100 0110, EIN 16101 ool 3o EOM n: P

FOR xzO TO 7: o USF “+x, n: NEXT e DATA BIN Seveoeeo, BIN 00 DCO,EIN 00011C00, BIN 1001101@ N @i111111, BIN 88111120, BIN @ 2400, BIN 2111102 RETURN ia FEM B 43 FOR 44 FRINT AT

TO 16 $ x,0;x78;"L LS

45 NEXT x

47 CRAWL g5t,0: DERHU 0,175: DRA 8 -e55,0 GRAY Q.-175

46 FOR yz21 TO 159: PLOT 25$,y

NEXT u , te FOR is@ TO 21: PRINT RT i,e ] PAFEF 5;" d. E u Go 68 BEEF d.p: GO TO 53 70 DATA 3,1,2,6,2,10,2,12,1,12 ,1,12,2,13,2,10,1,10,1,10,2,10,3 ,6,9,10,2,5,5,1,4,69,4,68 i 580 DATA 2,1,2,6,2,10,2,12,1,13 .1,12,2,13,3.10,1,10,1,10,1,10,2 ,1,2,1,2.1,2,6 90 DATA 993,923 100 PRINT AT 21,9; FLASH 1; SFI oot 1; PAPER 2; INK S9;" THEY'RE O Fi"

Use Graphics "A" &

199 REM Se pea ene 200 RANDOMIZE : LET as3: LET bs

LET cs3: LET d=3: LET e=3: LE

3: T f23: LET 923: LET hz3: LET i=3

“210 LET reINT (RND#841)

215 BEEP .Q5,r: BORDER r-1

220 GO TO rs10009

1080 PRINT AT 2,.,a-1:

1029 LET aza*1: IF d THEN Go TO 31900

1030 GO TO 210

2000 PRINT AT £,b-1:

2020 LET bsb*1: IF bade THEN Go TO 310

2030 GO TO 210 3000 FRINT AT 5. 2029 LET c=c+l: TO 3100

3030 30 TO 219 4009 PRINT AT 3.4- Low CET dsd*1: IF

-1; ir i THEN Go

e O 213 8000 PRINT AT 18,h-1;" w" 1: IF hz32 THEN 50

219

3100 PRINT AT 13,4; BRIGHT 1; n

asn i;7.....The winner is "jej"! pe

3105 PRINT AT rs2,0; OVER 1; BRI GHT 1;".

3110 FOR 3=1 TO 10: BEEP .5,x-1: BEEP .5,«-5: BEEP .5.x-3: BEEP .S,x-10: PAUSE 1 BEEP .S,x-19:

a -S,x-3: BEEP .S,x-1: BEEP

:3,4-5 3130 PRINT AT 21,8,;"PRESS ENTER TO RACE AGAIN!!!”

3149 PAUSE 13909: CLS RESTORE 2 : GO TO

2999 REM T3

3990 BEEP 1.19: C BORDER 6

$ LS :

3005 CRAY 255,9: DRAY 23,175: DRA Jy -255,0: ORAU 2,-17

3010 PRINT AT 1,7; PAPER 6; BRIG aT 1;"TREUI RACE TRACK"

3929 PRINT TAB 1; BRIGHT 1,"Ther 2 one scare horses in this"' TAB

1; 3330" BR INT : PRINT TAB 1; BRIGHT 1; Pick the". PAPER 5;" TREUI " ; PAPER 7;"entry and gou"'TRB 1; “HAVE YIURSELF à WINNER!"

9940 INPUT “OK! HOW MANY BETTORS

i NO MORE THAN EIGHT PLEASE! "; b$: BEEP .1,25

9042 IF CODE b$:49 OR CODE b$)55 THEN GO TO 239040

3043 IF LEN b$:1 THEN GO TO 39049 3045 PRINT

2050 FOR a=1 TO VAL b$

3052 PRINT PAPER S;a; " Bets hor

3033 INPUT ws

3054 IF CODE u$:49 OR CODE 5558 THEN GO TO 3995 E 3056 IF LEN U$:1 THEN GO TO 3053 3057 BEES .2,15: PRINT INK 7; PA PER 2, BRIGHT 1,8," BETS HORSE W

act 3268 PRINT PRINT AT 21,3; E 7; FLASH 1; PAPER 2; FLASH 1;'

RESTORE 73: CLS

or uu m 4 u a um X =

3079 PAUSE ae 3089 GO TO 42

FROM THE PROGRAM

War of the Worlds This tune is played so often it'll put you to sleep.

"B" for the horses in lines 15 & 30 etc.

Here's Black Mask Agafa

P$(1,X) -CHR$ 32 P$(2,X) =CHRS 128

LELET R

218 NEXT 238 REM U UH 248 LET K0-1 ITES OF EYES

278 IF P1-18 OR » = THEN 2.2 (P1-12 AND P2-2

288 FOR D

298 NEXT o! T0 DIE: -

388 LET 9-e

318 PRINT AT 9i ER

P2 TEMS NI AT 9,P1;CHR$ 32;AT 9, 319 REM BLINK SoHETIMES d

329 IF P1 389,45 P1O9 OR RND<@.7 THEN GO

338 LET KO=2

349 GO SUB 1898

35@ FOR D=1 TO s NEXT D

378 GO TO 248 COMPUTE NEU POSITIONS t

379 REM AR 2P2) FOR PUPILS

89 IF P1-6 OR P1-12 THEN LET u

=-U 238 IF FL=@ OR P1<>9 THEN Go TO tee LET FL-e

418 GO TO 458 429 “ao P1«»9 OR RND>8.2 THEN GO

TO 438 “Per FL=1 448 LET U-1

ILL EYES UITH P$(KO)

NON PRINT AT 9,6; P$(KO) ; AT 9,19 19691 PRINT INK 2; 2;RT

OM 21; "THE PH IS VATCHING Y lad RETURN ous

- But Bolder (H. Rait)

LIST GROUP

PO Box 438

Centerport, N.Y FS 11721-0438 ane

LIST

N/&4

COMMUNICATIONS CORNER

1. COMMUNICATIONS

From SUM - you'll have to consider getting rid of call waiting" “if you plan to use a MODEM to talk to one of the BBS's or :

services. The signal sent to your phone confuses the West-

ridge Modem and may send false info to the Mainframe, as well.

"mn

Herbert W. downloaded these tidbits on the use of S-Term II.

Catatog entry: st2 info

Opening buffer Using the dialing menu Up Loadsdownload . T---2-2-2-2--2---.--.-2.-l2.-2---

i On pages 15 and 16, the manual Uhere this manual is concerned, : attempts to describe the this is public enemy number one. i operation of the dialing menu. There is no area quite so Uith NO explanation of the unclear, and we seem to get as commands, it states “PICK ‘A’ many Phone calls asking about AND YOU GET". A greatly expanded this feature as the entire rest detailing is needed here. Of the manual. The manual States, and I quote, "There is First of all, MTERM can remember a HEX/REM conversion.". Ue need UP tO 14 phone numbers (with the to expand on this just a bit. Proper serial parameters AND the

macro key to transmit upon

Timex MTERM has three styles of receiving a CTL-E from the host) buffer conversion. HEX, REM, and Per MTERM data file. If you

NONE. Let's take a took. Wish, you may enter a Phone

number not on the list directly The NONE should be somewhat at the dialing menu, and HTERM

self-explanatory. What is will Still dial it for you. But, received from the service is to simplify matters, it is a what is stored in the buffer. 900d idea to place your phone And what is stored in the buffer numbers into the table. is EXACTLY what is sent. You i will use this style of buffer To set an entry in this table, conversion when you want to select the tetter you wish to download a text file from one modify. Uhen you select an source and upload it to another. entry, it is displayed and you Nothing is altered in the data are allowed to alter each at all. Portion of it Separately (this allows for easy entry editing). The HEX mode is also simple. As each byte is transmitted from Uhen you Press the C key to the buffer, it is translated Change the serial Parameters, into its two-byte ASCII MTERM wilt "Se whatever serial equivalent. For example, the Parameters are CURRENTLY SET in byte 1AH in the buffer would be the system for the specific sent as two characters, a "1" entry. For example, if you and an “A”. Uhen data is adjust the HTERM Program for downloaded from the host, it is B,N,1 and then edit entry "D", assumed to be in HEX format. when gou press the C keg, the Each character is Combined uith entry will change from the the next and one byte is made. default 7,E,1 to 8, aie The bytes "1" and "A", if sent from a host and placed into the The macrokey Setting allows you buffer, would translate into the to have more than one macrokey single byte 1RH. Uhy do this? So that wilt be transmitted upon a that you may send and receive. CTL-E. Other MTERM versions onty binary (machine code) files with sent the FIRST macro when the an ASCII buffer transmission. j host sent a CTL-E. The other | This Will allow two Timex users |o. macrokeys had to be sent under | With MTERM to send machine Operator instruction. This language programs to each other. version will send the first macro (by default) when a CTL-E The REM mode is unique to the i5 received, but also allows Timex world. Unless they have a you, on an entry-by-entry basis, word processing Program, such as to have this directed to any of Our MSCRIPT, it would be hard to the 9 other macrokeys. Note that Create text files (such as when this option is engaged for messages for bulletin boards). an entry, the first macro CAN There is only one “built-in Contain text. It will Simply text editor on the Timex, and function as any other manual that is the Line editor for the macrokey.

BRSIC interpreter. This option

allows you to enter Lines as REM NO bulletin board here

Statements, load them into the =~. 2 li Shin board here

buffer, and transmit them. Uhen

they are transmitted. the tine Ue frequently get asked Whether

number and REM keyword will be Or not MTERM will, in its

deleted. For example: 3Uto-ansuer mode, function as a . bulletin board. Please explain

5 REM This is the first line. that this is not the case at att

10 REM This is the second Line. and that a bulletin board is a

Separate program.

Uhen this buffer is later

transmitted, with the REM

Conversion option set, the text

that is actually SENT would be: : The Smart Term II Program gives

This is the first line. YOu some vitat information about

This is the second Line. the status of the capture Th technique would be to manent tan tate e tees the e proper techni anual completely ignores the . load and enter MTERM and then They are: se use the "Exit to BASIC” feature. Enter the program as REM BUFTOT Buffer totat Statements, and then return to BUFUSD Buffer used MTERM with the PRINT USR BUFFRE Buffer free Command. The Program shoutd be BUFXHT Buffer transmitted in the buffer. (during buffer transmission) BUFPND Buffer pending fAUNCING efto saaan LENY

Tr S 3 © 2 = Ld 3 z 8

11161

GRAPHICS PAGE

LOTT. wings. Rt 'S SCREEN MACHINE DEMO produced these dra

ma Ss mo screens which this program can put out. = ght find these programs (PAINT BOX, SCREEN MACHINE)

us a copy of some of the de you have a "Spectrum" you mi quite useful. s

x ^

Ma SN CREEN MACHINE compiles o all text and udgs into ""Vi compact machine code blocks that not only save memory space, but print much faster to the Screen... It also enlarges. flips and reduces hi-resolution screens..

.and...

Bob H.

(cr 3»

x wu

A UN

T [ )

lent If

PRESS RELEASE ZEBRA GRAPHICS SYSTEM

10-25-84 FOR THE TIMEX 1 - ZEBRA GRAPHICS INTERFACE

TS2068 COLOR COMPUTER 2 - ZEBRA GRAPHICS TABLET

PRICE: $119.95 3 - lebraPainter GRAPHICS SOFTWARE

l - ZEBRA GRAPHICS INTERFACE:

Fully compatible with the TS2068 color computer.

Employs precision 8-channel Digital-to-Analog Converter. Completes over 1000 measurements per second.

Works on the TS1000, TS1500 and TS2068. (Spectrum Version Coming soon!)

Two Standard 6-pin DIN connectors accomodate Graphics Tablets, Analog Joysticks, and much more.

Expansion connector allows piggybacking of other periperals.

2 - ZEBRA GRAPHICS TABLET:

* Manufactured by KOALA Industries.

* Plugs directly into Zebra Graphics Interface.

* Features rectangular touch sensitive drawing area.

* Draw with your finger or with the plastic stylus suplied. * Two control buttons for programable functions.

3 - ZebraPainter CASSETTE SOFTWARE:

* Fast 1001 machine code software.

* Fully utilizes TS2068 advanced color display mode.

* Select Paper, Ink and Border Colors.

* Draw and Erase freehand with fine point pen or broad brush, * Features precision circle and line entry functions.

* Keep two screen drawings in memory at once,

Save & Load screens to cassette tape.

* Prints a screen image to your Timex printer.

* Comes complete with:

Zebra Graphics Interface.

Graphics Tablet by KOALA Industries. ZebraPainter software cassette.

> ZebraPainter Quick Reference Card.

> Full Documentation.

> Zebra 90-Day Limited Waranty.

"vv

* Related products now in development include:

> Software support for TS1000 & TS1500 ... Our hardware works on all the Timex computers. > OKIDATA Color-printer interface and software support. > A mouse. > Analog Joystick Software. > Voltmeter. > Temperature measurement.

FROM 16/48 MAGAZINE 9 wy

LL. E T TE re 2

find te Fitch back t the Sincar Serıpt type it - 5

9299 POKE 23602,0- POKE 23607,60 Ww

RETURN Wert 12 2 AN o the meu character Set -

RSZ% ()*4.-./0122456783: : c29 CABCDEFCH IJKLMNOPORS TUVWXYZ EN 1 1... tübCdef9h;;Kinno qu

boud ch? BOU What Yor ve att been basting fOr, FOC Me tO Shoe

Jeu wet te M56 thet Machine csi routise te etar the Serera

Your cometine» Uic I misses!) gave me the i8SPiration

(It 5 reiecatite by the gay)

Te Sate press BREAK aed eater in - N

SRUE "Fade CLS"CODE 23400,17

jus

And this is

ere 2068—-SPECTRUM ROM MODULE

T/S The following instructions for building a switchable ROM Module are for those individuals who are experienced at scratch building electronic projects. I have built 3 modules. Each one has operated with out a problem. 14 you decide to build a Module and cannot get it to operate properly, contact me in care of L.1.S.T. and I will do my best to try to assist. Lets get to it.

Open the computer case using instructions from last month’s issue of L.1.S.T. and carefully remove the ROM (U16)0 from the socket. Place the ROM in foil or conductive foam.

Using the full size template Provided, cut the PC grid board to size. Smooth al! edges with a fine file.

Next step is to prepare a 28 Pin, 3 level wire wrap socket into an offset socket.

Cut à small scrap of perforated PC board with ? rows of holes. Row 1 and row 7 must be cut along the perforations, leaving 5S rows of holes. This will become a lead bending jig.

Hold the 28 pin W/W socket with pin 1 facing away from you and to the left and al! leads (pins? facing down.

Carefully bend pins 2 through 13 upwards and to the left.

Turn the socket over and place the lead bending Jig, center row Of holes over pins 1 and 14 and hold firm against the socket body.

Bend pins 2 through 13 upwards, aligning each pin along the perforated edoe of the Jig. Remove the jig and bend pins 1 and 14 down (as pins 2 through 13 were previously bent).

Lay the jig against pins 2 through 13, holding the jig against the socket and bend Up pins 1 and 14.

The remaining row of pins must be bent in the $ame direction as Pins 1 through 14, however Pins 27 and 15 must be used to secure the jig.

NOTE: Pin 27 MUST NOT BE BENT TO FORM AN *L*. Pin 27 is used as a contro! select line for one of the ROMS. Repeat the previous steps and bend pins 28, 26 form an "L",

If the socket pins look a little irregular as to not worry. Trial fit the socket into the PC board.

1f a vise is available, place a small piece of wood between both rows of pins (bottom of PC board) and a thin section of scrap wood over the top of the socket and place in the vise. Slowly and carefully close the vise until the socket body is approximately 1/16" from the PC board.

Remove the assembly from the vise and straighten each of the 27 pins with a needle nose pliers.

Place a pencil mark at the location of missing pin 27 of the Gouble row of pins; then remove the socket from the PC board. Insert a’ stiff piece of wire (or a Spare wire wrap pin) in the hole in the PC board previously marked with a pencil at pin Vocation: ® 27, Bend the end of this pin to half loop (non copper side of ‘PC board). The end of the loop should protrude through the PC board at a hole next to the pin. Solder in place.

Insert the wire wrap socket into each of its’ 28 respective holes on the. PC board.

When satisfied with the socket pin alignment, solder each of the 28 pins to the PC board.

Using a small fine tooth file, shape the inner and outter of the double row of socket pins to a chisel edge. Carefully plug the PC assembly into the vacant ROM socket (U16)

firmly

through 15 to

alignment, do

edges

'to insure clearance between the ROM board and the computer sub-

assembly board. Remove the ROM board and file any areas

required for additional clearance between both assemblies.

'Using the component side diagram,

"£A EM i

Place the low profile 28 pin socket into appropriate holes on the ROM board with pin 1 (or notch) On socket facing in the same direction as the wire wrap socket and solder in place. ^ insert the .Oimf capacitor into the PC board and bend both leads to secure in place.

Preform the leads on both 10K resistors and insert into the PC board and bend the leads to secure in place. Strip the insulation from a 6° length of wire connect to pin 28 on one IC socket. Dress the wire bottom of the PC board and connect to pin 28 of the socket. Solder both joints. This is the +5 volt bus. Repeat the previous step, interconnecting pins 14 on both 1c sockets. Solder both joints. This is the ground bus.

Bend the leads from the .Oim¢ Capacitor and connect one lead to the ground bus and the other lead to the +5 volt bus, then solder both connections.

Connect one lead from each 10K resistor to the *5 volt bus and solder these connections.

Connect and solder a short length of w/w wire to the free end of the 10K resistor closest to the low profile IC socket and connect and solder the other end of the wire to pin 27 on the low profile IC socket,

Connect the free end of the second 10K resistor to the straight through pin (27) on the wire wrap socket and solder in place. Solder a short length of wire to pin 27 of the double row of pins. This is the single pin soldered in place earlier. Solder the other end of this wire to a pad close to both 10K resistor leads which connect to pins 27 on both IC sockets.

Take a break and carefully inspect all soldered connections for shorts and/or unsoldered joints.

Using wire wrap wire, interconnect Pins 1 through 13 and 15 through 26 on both IC sockets, then solder in place. TAKE YOUR TIME and be careful not to create any solder bridges between socket pins. (Pin 1 on one socket connects to pin 1 on the other socket......and so on).

Connect and solder an 8" length of wire at the junction of ' one 10K resistor and pin 27 of an IC socket. '

Repeat previous step for the other 10K resistor/pin 27 junction. Solder the free ends of the wires to the outside pins on the SPDT toggle switch. One wire to the N/O Pin, the other to the N/C pin.

Connect and solder an 8° length of wire to the solder pad with a wire connecting to pin 27 of the double row of pins. Connect and solder the other end of this wire to the center pin on the switch,

Again, INSPECT ALL solder joints for any meter to check continuity of all parallel all socket pins.

If all is OK, insert the ROM board into a conductive foam pad. Carefully place one ROM IC only into any one IC socket on the ROM board.

wrap wire and along the other IC

shorts. Use an ohm Joints and between

SOCKET PIN BENDING JIG WIRE WRAP SOCKET

PINS FORMED "L"

Carefully insert the ROM board assembly into the vacant ROM socket (U16) of the T/S 2068.

Dress the wires from the toggle switch into the computer cartridge section to avoid a possible short circuit.

Replace the top of the computer case . Do not replace the screws at this time.

Connect the power cable and video cable into the computer.

Apply power to your TV and activate the computer switch "ON".

If all is well, the copywrite message will appear on the TV screen,

If vertical lines appear on the screen, turn the computer off, flip the toggle switch to the opposite position and activate the computer switch again.

If everything is OK, turn off computer power, raise the top of the computer case and insert the other ROM IC into the vacant socket on the ROM board.

Drill a hole in the back of the computer case and install the toggle switch.

Reassemble the computer case with all hardware.

Flip the toggle switch to the opposite position and activate the power switch on the computer.

The copywrite(s) should appear on the screen on your monitor.

Parts required: 1 each unless otherwise noted Conductive foam pad......eeeee eo ÉÉ.Radio Shack 276-2400 Multi-Purpose Plug-In Breadboard..........Radio Shack 276-155 Low Profite 28 pin IC socKet......... ss. Radio Shack 276-1997 Wire Wrap Wire....ccee eee oo s ÉvÉ.Radio Shack 276-501 0OL Disc Cap..eeeeesoceocecececceceeceeesR&adiO Shack 272-131 2- 4.7K - 10K, 1/4 W resistors.......O. Radio Shack 271-1335 Sub Mini Toggle Switch SPDT.............. Radio Shack 275-326 Wire Wrap socket, 3 level..DIGI-KEY, Highway 32 South, PO box 677, Thief River Falls,MN 56701 Happy Soldering.........Bob Gilder

ROM MODULE SIDE VIEW

R1,2 4.2K -10K

SCHEMATIC OF

DAM MONIT PE

@e200c0 8290090020

Beeeeecveods0a

eeet®e teen gaoond

eoe©e@e0080908 8000090

*$ecoóáocooo0oogoQoooco»e 9099$9020$652.0096c000009c0c000 eso Orja OCF #© OLD G olan © 9F7%C COP BH DED Leo

~-~€©€22®@e2809 ©CeOn 8S Qe@e0 0 220200 ~o 20 ene

Poe@etnne-

9202900400 S000 edo 90 060004209 vcoe0o902o00c ecooeeao?40

4 1.58 T GROUP

Ž FOIL SIDE

NON-FOIL SIDE

COMPONENT SIDE

WITH WIRE JUMPERS

TEMPLATE

FULL SIZE

> op Io

^!" (0|

Here ıs a list of programs and an indication of their system taken every precaution to insure accuracy. But Enter Lengua has NOT been able to RUN every Program listed below: vou may be able to make a program work that we think will not wort

SPECTRUM

with a given system and vice versa.

JACKPOT, Computer Rentals Software THE MIGHT SKY, Bridge Sattware

PENTA-CUDE, PANIC NINER (BREAK loader and change CLEAR to 28000)

MONITOR 48 DARTS GAME

TEDBEDOY (iroa Your Computer) MYSTERY MANOR

2048 COMPATIBLE PROGRANG Ma need for on Caulator or a ROM but mill RUN with both | courtesy of Bod Lussier, Steve wyatt)

DOMINOES, Microsega Software SPECTROGRAPHICS, Bridge Software BLACK CRYSTAL, Carnell Software MASTER CHESS

SLICKER PUZILE

GRAPHICAL GOLF (iroa four Coaputer) WALLS OF THE THINGS

EDITOR ASSEMBLER, Picturesque

Asp Softuare

About 501 of SUPERCODE will work without any help iroa Esulators or ROMS. Tn sany cases saali changes to a prograe will aate it work, such as the change for Manic Miner, And there art aany core titles that will work directly since there are now sore than 4000 Spactrua progr ass,

CASCADE 50 GAME TAPE (£9.95) MCROPRIAT 63

SPECTRUM MASTER TOOLKI] WITH REALTIME CLOCK, available iroa Hang Wild Software, U.S.A.--some of this will rua sith the ERULATON THE FORREST,

PANIC, PSS

SPECTRUM VOICE CHESS ETI (ET with voiced

CHEQUERED FLAG (£6.95), Psion PSEUDOSPRITES trom YOUR COMPUTER sagazine

PSST

CYRUS CHESS

HEATHROW

EMAATOR MY. WORK) ROR WORKS FINE (courtesy ot Joe Wiliiaason, FOOTE Soítuarel

POOL (£5.95), Bug-Byte SUPER SOCCER

NO BUCCESS YET WITH QUA. EMULATOR tissue ITT ROM aay vor

Phipps BLUE THUNGER, Wilcox

1880€ 111 ROM-OMLY PROGRAMS, THESE DO NOT WORK CORRECTLY WITH OUR EMULATOR (courtesy of Bill Russell)

BIRDS AND [HE BEES ADVANCED GRAPHICS FOR THE 11 SPECTRUM

NEITHER ISGUE 111 ROM NOR EMULATOR WILL RUN THEBE PROPERLY

PENGY (€5.95), Microsania DRAC MAN (fro@ Your Coaputeri

ISSUE 111 RON WILL NOT WORK iÉaulator say wort)

SCUBA DIVE (£sulator works fine) JUNGLE FEVER

If you wish to contact other sources of emulation here they ares

6. RUSSELL ELECTRONICS, RB | Box 539, Centre Hall, PA 18828 (814)384-1323. Manufacturer of ROMSWITCA.

GAMES TO LEARN BY, Inc., P.O. Bos $75, 2 South Street, Williassturg, MA 01096 (4131248-7505, RONSWITCH. PHEONIT ENTERPRISES, 1780 M. DuPont Huy., Na. i7, Dover, DE 19901 (3021734-0179. Spectrua ROMS.

FOOTE SOFTWARE, P.O. Bon 14455, Gainesville, FL 32604 (904)462-1086. Spectrua RONS.

THE JONA OLIGER Co., 11601 Whidbey Or., Cumberland, IN 46229. Manufacturer of general. purpose cartridge boards, EPROM blowers, expansion boards, etc.--all in kit fora--for your I1TS or 2088.

COMPUTERS OF WIGAORE STREET, 87 Wigeore St., London W7W ISA, England. Atta.: Pike Sutia or Ales Mills. Reliable

and fast exporters of Spectrue RONS, List Associates, 10 idie Day Drive, Centerport, New sork 11721 Has limited quantities of Spectrum ROMS

compatibility. We have

UMATU VERE FE \Isene 11] AON ay vert, toe)

GUPEACOME (£9.95), CP Setteare

ATIC ATAC

MALIACS, Spectrua versie Gi Rarooqs 10 LITTLE Ime lang ^

LORDS OF AlpaiGut

TERBEDEY (iron Tour Conpyter)

CROSS (free Your Coaputer»

10/48, à eagnetic 00941100, all of last three issees aeris BEOGAAPNY |, Loesoít

TWE SOLAR SYSTEM, Eaqiosett

SMAKE PIT, Postera

STARGALER SECRETS, CAL

Stub MV€, Durrell

WICK COOK 11, PMES

JA TUNNEL, Hew Gener ation

16/48, all of August 10000

SPECTRUM EITENDED BASIC (£9.95), CP Soituara SCRABBLE (£14.95), Psion

MIKE, PC Saiteare

QUILL (014,99)

3-0 Tat, QkTronics

SupzTY

SPECTRUM TAPE COPIER

TERADACET IL

CODE MAE MT

LUMAR JET AME

TASWORD Ted

FamtaSia

MALE DEATH RACE (AOR)

SALACTOLIS (roe Your Computer sagaziee) DICTATOR (£6.95), MTromcs

J-A STRATEGY (819.95), Quicisilva

TIREGATE (819.95), Ouicksilya

GARES DESIGNER (929.95), Guichsilva LASERIOME 1819.95), Guictsilva

ThE CHESSPLAYER (619.95), Quictsalva AQUAPLARE. (819.95), Gurchstiva

FRED (019,93), Quictsilva

RAVROMD BRIGGS’ THE SAOUNAN (619.95), Quicisilva QumafOm AASTER (£7.95), Crystal

OAACLES’ CAVE (£7.95), Oric

GAMES M (819.95), Quichsrive

MAIC RINER (£3.95), Sottuare Projects TUTAMC HARUM (C$. 15), Microsania

LEARNING BASIC PROGKAMMING OR THE SPECTRUM, logic 3 SPECTAUA FORDI-- lateqer-- (019. 13), CP Software/Hang Wild SPECTAUA FORTH (829.931, Adersett/Hang mild MIGHTFLITE, Hewsons’ Consultants /Haog wile QUEST, Wewsens’ Consultaats/Haeq tild FIFTH, Richard Tayler

THE WOBBIT (£14, 95), Sinclair Research EASY SPEAK, Duicisilva

ERIDAUMER, Ducitilva

FRENIY, Ouichoslve

SPACE INTRUBERS, Qurctsiive

TRARSYLVARIAR TOMER, Richard Shepherd

SHIP GF TWE LIME, Richard Shepherd

URBAN UPSTART, Richard Shepherd

MAINS 1, SciSett $

JUNGLE RAINS, $cifeit

ENTER LENGUA an , Education 206 James St., Carrboro, NC 27510

Computer =

JET SET why

SABRE nA f

SHIP OF DOOR, Mv. C

COLOSSAL ADVERT UAE

PATI

BALLOONS iiras four Cospater) SIMCLAIA RONLTOR An DISSASGENRLER

{nae eacapt for | progran vti eter i

IAM, Starione mie: GUITAR TUTOR, arleta 03s nes EVE OF IWE STAA WARRIOR, fenebiag -i PREA-MMTT, Pikasoe T WÜOLEFOQNE 1, PRES

CONTINENTAL 111, PaCS

SPECTRUM CONPUI TIS CASS, MAGALIMC, MP SPECTEIT, a vera precesser '

3-9 Tax DUEL, Resi Tiaa foltmore METEOROLOS, Quicksilve

SPIN GF EVIL, MIrenics

FL lGaT SINILATOR, Psion

HI RISE MARRY

MRREY BURGERS

Spectrua Computing aagazine TAPE CHOPPER RESCUE

URN

LAST SUNSET FOR LATTICA

TYPESET, Micro Kratt

TOMERS

FORTH liron rour Computer Bagal ine) FIFTH, fichard Taylor

AMT ATTACK (£4.15) (819.19), Qusctsalve MINED OUT (919.95), Quschsaiva

+ DRAGONSBANE (Cà. 9$). (919.95), Duicitiiva

SMUGGLERS” COVE (919.95), Guychsrlve

BUSABOQ (919.95), Quicksilvre

VELIOR'S LAIR 1619.95), Quictsrive

CYDIAD ASSAULT (919.95), Quicisilva

JADON 1919.95), Quicttilva

LUMA CRABS (15.95)

TRAIN GARE (€5.95) Micro Sphere

SPECTRUM MONITOR (£7, 93), Picturesque

EVEREST ASCENT, Richard Shephard

GOLF (£3.75-£6.95), various companies

SPECTAUN EDITOR ASSEMBLER (£8.50), Picturesque

WHITE LIGHIning (£14.99)

SPECTRUM FORTW--F. P. -- (944.95), CP Sel teare/Uanq mid COUNTRIES OF THE WORLD, newsons’ Comsuitantesnang Miia 7-8 SPACE GARS, Hensons’ Consultaats/Haog 1116 SPECTRAL PANIC, Hewsons’ Consultants. Haag wild

MICRO PROLOG (£24.95), Sinclair Research

Rost Spectrus prograas ia British eagazines will tum TRAAL, Quictsilea

AETEOR STORM, duicksi lva ! WORD PROCESSOR, Ouicisilva CEBTI-MU6, MI reac . WNIACIRLE ISLAND, Richard Shaphere i DEVILS OF THE DEEP, Richard Shepherd

CASH CONTROLLER, Richard Shepherd i MAINS L1, ScaSoft f THE 811MB' S B03, SciSeit

Douglass kk, Dewey

MISOPT

[Tal Maisa Bos LUN AT fot WAAD AORDI

p.d. aeea iy, Me P Donnelly Contespuina, LIST Group he Has Lona baland mo : u.3.À. Centerport ARW YORK 101721 usa

Gees Mr. insemliy.

25 June 1986

Dear Mr Donnelly,

[EN Thank you for your letrer dared ÀA June 1984,

Tou exprees interest in our P

Gate, —

cal compiler on the

aileble on the Li lanni.:

to do this eodificetion in hove tnelond, oné ve

would be happy to inform you as soon as this conversion

hea auccesalully taken place.

1 hoy

this Informecion ie of use to you and, hopefully, we shall! be contacting you again soon.

Youre al

7 5

rely,

|o duse on

Genet Ue Cem Uy charge of b$ (US) to

What plas lob. gant mapa Eye

s ut Um mii

we don't slits cigiuiy w after pau ie dive Uae.

^ pream, nm an't capt payment Dy Crit corde, alt waaf: Unie le o guesiblil, fos Ue lukus, A anena Qeyme ta ais sitona to imase UM cuota.

we teven't tmetly agat aut & Lidtrely of franchise pro ee. but ace always

upan to waysetionel

Taus sincerely,

want enti sopenina uf mellliq custe. we charge Ue

J Lage, Alusa vm stamp Ure carue with a return Anda dele mu yu, «ey hemp Ue Lapse for 4

| WO Iu abun. 41 WAALFAELD AVENUE (MEAN, SURAET M INE

l'e susiy for the siiyht delay in capiylig but we aleays Curceetiate u usspalthing Ue Lapes Osi

luia ve wees uus otra: ssil,

fume stc. Me iu have a fos mata:

ha U.S. meti 9 an lieciusive

pon \ a - 1 3 United Methodist Church vies Cotes " n 33 1 1 5 da P atig get » 11115 saben danad saat , P MF Ait, la | pte we iat l EP a P d i4 our das, x VIE $ 5 5 chen, "A s” P P 7 3 / J pK G 3 f 1 "2 d I IA Cet "i A, A [. ae Pd s” ge" ae Hurdle 40 pe y T ; w a | ( ll Á vf vee $5 d v. ù z s . " $ LÀ LI zi Taa unk ry (A NS y wh t2 PL $ à $3 (l. ; RC e D 1.7 Mr, "n z 1 e o i: | m La fr ehi Sha zung T MEE TN H dat bn ri o . k =; , It zi o tar qu (Ux JL qu $ purs L Chita Qs (f i i ee Wie, e 1 AY RC (id qr Si A uL z ; P hae. -1 Me 2 9 » VAWE ae" L io ' fEàsor 3 Aur in ES = it 1 H (uL s } ( ] a Dear 1 P geo 3 \ o ; i lB weld Y geal LU VK | es mno ~ oes 2. se o Y y- IP PAL noo D esc e V | 2 77S Bac. * "Les O, E D» (S vay i 2 VER Cipap r CA L Re ze " ac Pis, P^ meas; Tés ad Siege. X ex e^ ' R aot D TL Aove ag Onn E ees P- Lag Ly "va à E E K N oY IUe ow m I s << ony p i 2 e Aa ` TS “r a, SF a Tues DU eee zoas D Se m ps on lf 1, T fas, : 7! t Tone ne Pr eae pho ^4 X OS pon Pr

it has got fev members but I

Buenos Aires,

20th october, 1984. Dear sirs,

I.nave read your adress in a magazime and I your club. My name is Eduardo Daniel R Saladillo Group.

am interested in 1», and I am in the User's I vould like to knov hov you vork;

IE I vant to exchange information, programps and mail.

The group I mentioned above, is recently formed an

suppose it will be bigger in the future.: we are develéping investigations,

fec orn.

West Covina, Ca. 91790 October 26, 1984 List P.O. BOX 4M

CENIERPORT, N.Y. 11721:.0458

Deur Paul,

Glad to read in newest LIST that the home and that my Print 'N Plotter ut the meeting.

Round table #3 made it "PAINTBOX" was a hit

TW" due connector diagram was a surprise, as | had just made an almost identical one in trying to rewire my EURO- ELECTRONICS "LLPRINF LIL" for the 2068. Theinteresting part is that the 2008 was made compatible to the ZX B1/[s- 1000, while tlie Spectrum is sort

Enclosed are a full demo tape from Print 'N Plotter ready to Tun on 2068, then for the best you have to put in “Spectrum lmulator", and load rest of tape...Load Program "1" and follow start instructions. (Took me two days to record this...if programs are not loaded in sequence, some variables are missed, leading to loading

errors. Sometimes à loading error without a line number will be okay if you stop tape und GO TO 1

stop

-) Generally tape errors mean not enough Volume as this is a tape copy after editing...a stereo channel R onlyt The second enclosure is my EP-44 data for ZX-B1 if I didn't send it before. I would like any info on EP-44 that Heinz has on commanding nis EP-44. Aerco has promised my RS-232 in “two weeks" Hat. | may get my LLprint til working sooner. | have an RD Tracer for Spectrum..] think all it will take for 2068 is an external. 12 volts.

(This is how it knows its on Spectrum and not ZX-H1») but

Provide 12v...will cut edge connector plug to insert where 20605 has "reset".

2068 doesn’t 12v externally

Th® 2068 tape signal is fussy about distorion as it is not clipped

us is the ZX-B1. A stereo track will not recognize titles do to phase shift...record only right and works Okay for tape copy. | use

Fiuht channel as left is near tape edge and more Subject to damage.

Sincerely,

Bob H

. WA®DLI issue LIST much more legible!

P.S. Last

T. uot" of Le D SIR pi? rdi perk yat! 5 a AS a s di e a TL LM aa P V 9* gat p” É » e A gen" yf cr qoa P piers aa Trt f p^ wT ot 5* ust: ara at no” ^^ ^ of yew pene cn y e” pect mA aes v y ; aw 5 s R your ə «9. t $ sR b oo tet ewe id nw pot quant "C t a R "n fi of as re wrt ^us" get n Duel P prt e : z " É "m Ip? = mdi oA gered d A 2? urhe. 4

= ae

—á.

bear sir:

This programed from memory ot ZX-81/T3-1000/1500 connections.

and may be helpful wust provide two features: =? lokes expansion to full

My nterface is the CAI

My lust address for CAI wus:

For the EP-44 | wired the

CAL Manual:

The baud rate and parity should be

Computer Applications Manual

The interface has to be set to 75

the computer and running it:

The CAI Manual gives the USER calls for LList etc.

should do the same.

NEWSLETTERS - BACK ISSUES

West Covina, Ca. 91790

ncra” September B8, 1984 : a fw bh a Š EP-44 tu answer inquiries on EP-44 Here is the into on MY setup. It will be exact for CAL Serial 1/0 Ps for others. For Sinclair type computers the interface 1) Sinclair code to ascal cude.conyersion, and ASCAL words. Ix 1/0 Board with Eproms for the Strinuy-Floppy wafer tape storage and serial Printer. CAL INSTRUMENTS, INC. P.O. BOX 2032 Midland, MI 485640 ut Tel. (517) 687-7343. ducit D5-25 Plug to the printer as shown in the in a du à vut ' in Z2----- 1 aout $ A & out 5 1 7 ©- ground 207 1 set as shown in the EP-44 1 for Atari & Commodore, namely: 4 BAUD RAIE 75 i BIT LENGTH 7 i PARITY z : i NEW LINE CR H CODE 5 BIT ER Y (Set EP-44 line space to 1) baud by typing the following into 10 LET ACE - 14336 (memory location in ACE) 20 POKE ACE-3,128 (set Baud) 30 POKE ACE,108 (LSW of Baud divisor) $0 POKE ACE*1,10 (MSW of Baud divisor) 50 POKE ACE*3,3 (set word length to 8) 60 POKE ACE*4,3 (set RTS & DTR) . 30 your own interface The CAI book did not show anything below 110 baud so the little program above sets 75 baud, which worked better than ^ è r If you are a fully paid member for 1984 (Feb, 1, '84 to Jan, 31,'85) and f gt do not have all your back issues, please drop us a line. Our records show ay 9 that all full-year members should have all issues back as far as July 284

but prior issue data is missing.

You might want newsletter with your response.

paid member.

ei cul

to include a short hint or tip, program, or article for the

Please don't ask for a second copy if you y

already have one and please don't request back issues if you are not a fully We are sorry for the inconvenience,

à * Heinz Hanken - 9 Dartmoor Northport 368-9088

"MEFBERS 7 n 2 25A to Vernon Valley Road, go south to Friendly's (pass the Post Office) ONLY PAGE

"T" Intersection n Alerton and then } block to a a ri ms "s Carrington and follow it to Dartmoor - 9 Dartmoor is shake shingled ranch,

iust past the fire hydrant on the left.

"/ ASA

+ Cyou can also tyPé "" with

USR call RETurns to BASIC to finish the line,

d is in machine code so you can’t evaluating to zero. CHR$ chanses the zero into a string. The line then reads:

In the immediate mode type this:

name"

he SAVE and allows sou tosee how the Pro-

and then immediately start to SAVE. Here is how it works! USR 832 calls the ROM LOAD

PROGRAMMING TIP FOR OCTOBER:

This stots t|

Mile High Chapter

Do you have a Program that Auto runs an BREAK it T Here's a way to stop Ruto-run.

SAVE CHRE USR Baz"

. This will first LORD the named Program

L gue SE EP 3l wy LIII

SAVE " " CCHRS of W is a sPaceJ and the comPuter SRVEs the Pro9^am.

subroutine and the tuo quotes hold the Program name

no Pro9ram name] After LOADins the Thanks to SYNTAX for this Programming tiP.

Timex Sinclair Users Grou Press BREAK at that Point. Gram Sets into machine code.

FAMILY COMPUTING

Timex Slaciair 1000 & 1500 Santa Claes 19 FAST 29 FOR @=@ TO 21 36 FOR P-6 TO 31 40 LET C*128 50 IF @>17 AND P»29-0 AMO P«qe11 THEN LET C18

69 IF Q>11 Am e@@2 AMD P. KLET cere ?6-(Q«14) AND PX25«(Qc14) THE 70 1F are ba 3 AMD Q«B AMD P>9 AMO P>14-0 AND P«19«Q THEN L bg IF @>9 AND Q«12 AND P>18-@ AND P<Q+12 THEN LET C913 99 IF 455 AND Q«12 AND p»9 AMD P«21

THEN LET Cag 199 IF Q>11 AND Q<16 AND P»9-2 AND - 110 PRINT AT Q,P;CHRS C doris ias

120 NEXT P Co. eure Ns uar 40 ra "V^. ut INT AT 9,15;"v*; AT 8,26; cHas 151;AT. 11,15;CHAS 1 158 sLOV 169 LET come

176 j i PRINT AT 7,13; CHRS (21*C092);AT 7,17; Chas (21*C092

1 ;

esee dd AT 11,16; CH8$. 131639C0);AT 11, 16; cHRs 131- 199 LET coet-c¢o

200 PAUSE 160+m@a80

210 GoTo 179

LLST. Group

utlod

jC -