Skip to main content

Full text of "Atari User Group Newsletter June to December 1987 Part 7"

See other formats

The mini 


The San Diego Rtari Computer Enthusiasts 

(S D A .C E J is an independant, non-profit organisation and nser group with no 
connection to Atari Corp . membership includes access to the program library, 
subscription to the I/O Connector, and access to any other club activities. Per- 
mission to reprint articles from this newsletter in any non-commercial form is 
permitted withot specific authorisation, a3 long a3 original credit is given . 

Commercial advertising Rates 

$35 - Full page $30 - Back Page $20 - Half page $10 - Quarter page $5 - Business 


S.D.fl.C.E. Officers 

VP. (ST) 
Prg Dir (ST) 

David Delgadillo 
Rick De Haven 
Bruce Lawson 
Frank Cascio 

ST Libararian mike Odegard 






newsletter Editor Peter Payne 560-4272 

VP. (8-bit) Ron miller 748-7195 

Treasurer Tom Andert 287-4198 

Prg Dir CS— bit J Buck Bragunier 582-2730 
8-bil Librarian David Becker 280-1330 
memship Ofcr Dick Haitt 463-8460 

(Call between 5:00 pm and 9:00 pm please) 

Correspondence address: 

San Diego qtciri Computer Enthusiasts 
p.O. Box 203076 
San Diego, CC| p2l20 

S.D.fl.C.E. Bulletin Boards 

S.D.A.C.E. 8-bit BBS S.D.A.C.E. ST BBS 

Sysop: Eddie Woods Sysop: Rick DeH-aven 

(6 1 9) 566-343 (6 1 9) 284- 3 82 1 

Submissions To The Newsletter 

are most welcome, and are due by the third IHonday of the month, for the next 
month's newsletter, mail printed copy or returnable disks with text files (ST 
single sided format please) to the club's P.O. Box, or upload the file to one of the 
SDA.CI. bulletin board systems . 


ads, available on a space-available basis, are free to club members. The Editor 
will accept ads at meetings, through the club's P.O. Box, or ’da telephone. 
Deadline for classifieds is the same as articles . 

From the President 

8-bit Vice Praz 

Time to bring up a subject that is from the 
seamier side of compu-terdom: that of soft- 
ware piracy . A reminder to all members, 
SDACE does not and will not allow any form of 
piracy at meetings or their other functions. 
This includes not only software, but 
hardware . To quote my parents in my 
younger days, "Ignorance of the law is no 
excuse." To the seller this means know what 
you have before you sell it. To the buyer, it 
means know what you are buying . 

There will be repercussions to any member 
of SDACE who engages in this activity during 
meetings of SDACE sponsored events. If you 
are in this situation, you may think, big deal, 
I don't need you. Veil, SDACE does not need 
you as well . SDACE has tried hard to obtain a 
meeting place that will allow private and 
com-mercial vendor support. Do not let the 
few destroy that for all . I don ’t think I need to 
go farther into the psychology and economics 
of piracy, they have been well discussed. 

On to other matters: the 3-bit library is 
doing well under the direction of Dave and 
ITlarge Becker. They have a GEnie account 
and are bringing you the best in public 
domain software and texts. The ST library, 
likewise, is booming. The monies that come 
into the libraries are used to maintain and 
add to the collection. This includes buying 
new disks and paying for the allocated time 
on. GEnie, Extra monies are sent into the 
general SDACE fund for use of both groups. So, 
support your 3-bit /ST library, and buy a disk . 

Let’s talk about the newsletter. Peter is 
doing a great job . He has had the usual prob- 
lems of time and get-ting board members to 
write their articles (sorry Fete) as well as 
some unusual problems this year . hot only 
should you give him a hand but also take a 
little time and write an article. I know we 
have many cre-ative people out there, I have 
talked to you . 

Everyone who wants to learn more about 
the ITlagic Sac on the ST, be sure and attend 
the ST Workshop on the second Thursday of 
the month! It’s for everyone, so bring your 
questions, you’ll find someone to answer 
them . 

Veil, that’s about all 1 have for now. Till 
next month. Happy Computing . 

Our July meeting was attented by a vocal 
group of folks who are interested in firing up 
the 3-bit club . Looks like we have the 
makings to do just that. Ve have nice 
facilities thanks to Paul Voods. Ve have our 
own EES thanks to Eddie Voods. Ve have an 
excellent librarian couple in the Beckers. Ve 
have our own slush fund supported by the 
disk of the month. Ve even have our own 
8G02IL computer and color TV (not including 
the BBS). All we need are organised meetings 
and a purpose in life . 

Although we covered many ideas at the 
July meeting, the fundamental result was we 
settled on a course for futyre meetings. First, 
our future meetings will begin exactly on 
time. Ve will devote 10 minutes to club ad- 
ministration, 20 minutes to the librarian and 
the disk of the month, and then we will have 
1 hour or less on the main theme for tha 
tmeeting. Ve have good ideas for themes, 
such a3 a live demo on using San Diego BBSs, 
security, data bases, mathematics, etc. One 
could easily list ten years worth of meeting 
themes. Ve will settle on these themes six 
months in advance, and publish them in the 
newsletter . That way folks who have to 
travel far can schedule their attendance ac- 
cordingly , After the theme material we will 
take a break and then open the meeting up to 
general questions, group projects, or specific 
help. There will be several computers at 
every meeting . 

You should receive this newsletter after the 
August 3- bit meeting. If all went well, I will 
have discussed how to use the joystick ports 
to control things. This will be a foundation 
for other group projects. I will have a live 
demo of this using a 400 connected to a 
rowing machine (exercise type). I will doc- 
ument this so those of you who missed it can 
pick up documentation at future meetings. 
You will see this again . 

At our September meeting , we will cover 
all the necessary facts you must know . 
Klodems are cheap, so if you are interested, 
this is your meeting. Ve will probably have 
meetings every month. Ilo one wanted to 
skip any months and that's fine with me. Ve 
have too many neat things to try . It is going 
to be my pleasure to work with such a 
charged up group of people . Vho know3, some 
club members might even get interested in 
(Please see 8— BIT TALK, page 7) 



-Dave Delgadillo 

Is the 8-bit Dead? 

Reprinted, from The PACUS Report 

(Editor's rote: I am including this 

ha I f-humorous ed i tor i a I , whose content I 
do not 1Q0& agree wi th, for your infor- 
mation. I invite responses to this art- 
icle, and will try to print all that I 
receive. This article is funny <and no- 
il thing but joking conjecture, with respect 
to the examp leas sited, so far as I know), 
but is indicative of a very serious prob- 
lem we as a computer community are facing: 
the eventual death of the 8-bit machines, 
fly f i re-and-br i ms tone sermon response is 
opposite this page. If you disagree (or 
agree) with this article, get mad and 
write to me care of the club's mailing 
address. Incidentally, I don't recommend 
putting a Pacman cartridge upside-down 
into a 1200XL; damage may result.) 

Sure, we've been hearing it for a couple 
of years now, "The Atari S-bit machines 
are dead." Although Atari denies this. 
I've compiled a few interesting facts 
(note t said facts, not rumors, which in 
the past is all we have had to go on) that 
demonstate clearly to me that the 8-bit is 

For instance, if you insert a Pacman 
cartridge upside down into a 1200XL and 
turn it on, "Clyde'' will appear, saying 
something that sounds to me like, "I 
buried an 8-bit!" Scary, isn't it? There 
are many of these hidden clues al I over, 
if you just look for them. 

One of the latest pieces of software 
that Atari has put out for the 8-bits has 
been Atari Planetarium. Boot that program 
and look at the constel lotion ARA (which, 
by the way, means Alter in English) with 
the i ines option engaged. Using the stars 
as dots and the I ines as dashes, you can 
make out, in horse Code, the phrase “8B8 
IF", which, of course, means that the 8- 
b i ts wou Id be 3 years old if they had 
lived. How can you argue with proof like 
that? This could not be just an acc- 
ident . 

These hints of the death of the 8-bits 
have been coming for quite some time. 
Take a look at the cover of Analog *44. 
There you will see a picture of what 
appears to be an operation being performed 
on an Atari ST. And what is found inside, 
looking 1 ike a mal ignant tumor, but an 
Atari 130XE. Although that is pretty 
blatent, there is also a subtitle clue on 
that cover. In ye l low, on that cover, are 

the names of three articles inside the 
magazine for the 8-bits: Arm your Atari, 
Ramcopy , and 8-b i t Para llel In ter f ace . 
The initials of these article titles are 
"A V A R 8 B P I ”, which is an anagram for 
"RIP 8-BIT VAR I." How much clearer could 
they make it? The 3-bits are not only 
dead, but they are glad of it. 

Still not convinced? Vou people are 
hard to please. Ok, grab your copy of the 
Apri I 1987 issue of Antic. Look at the 
cover and what do you see? A bunch of IRS 
men chasing a bunch of guys carrying 
banners that say "130XE." How think, what 
does that mean? I said think! That's 
right, only two things are inevitable. 
Death and Taxes. What at first glance 
appears to be a simple "tax- time" issue, 
in fact is clear proof that the 3-bits' 
time is at an end. 

These are a few examples of what you 
can find if you only look with an open 
mind. But most people don't want to see 
these th i ngs , because they don ’ t wan t to 
face the facts. 

I can't understand why Atari doesn't 
just come right out and announce that th 
8-b i ts are dead . 1 1 has been proven i . 

the past that charades don't work. When 
Elvis died in 1963, no one be I i eved the 
fat lookalike they got to replace him was 
rea I I y Elvis. When the I ooka like died in 
1977, no one bothered to try to get a 
replacement. When Paul McCartney died in 
a car- train accident in the late 60 's the 
remaining Beatles denied it, while all the 
time giving clues to his death in songs 
and on album covers, much I ike the clues 
show i ng up f or the A tar i S-b i ts today . We 
also know that Andy Kaufman is working for 
Atari, but that is another story. 

Like I mentioned before, Death and Taxes 
are i nev i tab I e . So I ets ra i se or g I ass to 
our fa I len friend, and also toast to our 
new leader, the ST. 

“ fhts King is dead, iong / tvs the 
K'ing. “ 

- John B. Sloop 

Editorial Response to 
"Is the 8-bit Dead?" 

Mr, Sloop has brought to light a very 
important fact that no one seems to want 
to admit: the S-bit SIG has been stag- 

nating for the past one and a half to two 
years. When the ST uias released in 1985,, 
the 8-bit users < myself included) never 
dreamed that it would oust the 8-bit as 
the #1 Atari computer. Little by little, 
as ' ST BBSs appeared, and old haunts like 
the now defunct Rick's Place BBS started 
supporting the 32-bit computers, S-bit 
users seemed to become aware of the fact 
that the ST was here to stay . That, at 
least, is my story, and when I was 
suddenly able to get myself a monochrome 
520ST sys tern, I j umped a t the chance , 
forsaking my 8-bit. 

Instantly my thinking switched from 3- 
bi t mode to ST. I started seeing the old 
familiar 800XL in an entirely different 
light, I've often regretted selling it, 
but my ST hasn't let me down at all. July 
marked the one year anniversary of my ST- 
ism, and I'm happy I made the change. 

But I am wandering. I'm here to talk 
about the 3-bits. Little by little, as 
the ST gained popularity (it has been out 
for three and a half years a I ready; t r me 
flies), the 8-bitters, I feel, withdrew. 
Many got ST's, or Amiga's, or clones. 
Alas, some 3-bits were lain to rest in a 
c l ose t or under a bed . 1 1 was as i f the 

8-bit had never been, for so many years, a 
leading pioneer in home computer tech- 
no I ogy . 

That the Atari 400 and 300 have, as much 
as the Apple II, the PET CBM, and all 
those other early computers, helped shape 
what one thinks of when they hear the word 
"computer" cannot be denied. Back when 
the 800 cost oven a grand (about 20 to 25 
times it's current market value), and 
people first started trying to make it do 
more than just play games, things were 
different than they are now. 

Now, in the aftermath of price wars with 
Commodore and Apple, the Atari 8-bits are 
a I mos t va I ue I ess . It's true . Peop I e paid 
$1080 for an 800 with 16K, and sold it for 
$50 with 48K, "B“ ROMs, and GT I A. That’s 
not a good investment. And few expect 
otherwise of the new machines: ev^n the 
ST's are experiencing the same situation, 
of people buying, then watching the price 
fall. It's grossly unfair. 

What happened to the 3-bits? Why did 

they fall so eas i I y? 

Well, for many reasons. Mainly, a 
little thing called the Commodore 64 came 
around. Offering good graphics, excellent 
sound, and most of all, a comparatively 
low pr i ce , the C64 d i d we I I i mmed lately. 

It was helped by the successes of the Oic 
20 , the f i rs t col or compu ter under $300 , 
and, of course, Willie Shatner. It was 
cheap ($595 vs. $1000 for an SOD), offered 
lots of memory (64K; although more like 
37K after taxes), and most of ali, it was 
something new. 

The rest, of course, is history. Atari 
had to I ower the pr i ces o f the 400 and 800 
which, compared to the 64, were built like 
Cadillacs. They had to put 48K ($300 

retail worth of hardware then) in the 
800 's. They stopped making money, and be- 
gan sinking. Atari tried to come back 
with the 1200XL, but as we all know, it 
offered nothing new, no more memory than 
we already had, poor compatibility, and 
nothing really exciting. 

As popularity for the 3-bits waned, 
so f tware foil owed suit. Pi racy de f ine 1 1 y 
played a very, very large part of it (slow 
as everyone is to accept the truth and the 
guilt), and soon the interest in the 3- 
bits was disappearing, 

By the time the SOOXL's came out, most 
of the damage was done, and Atari had lost 
the war. They had done well, put up a 
good fight, and had taken a not-so-close 
second place. The other losers in the 
war, Timex, Texas Instruments, Mattel I, 
Coleco, and IBM, all disappeared entirely. 
It is a cred i t to the sou I of the 8-b i t 
users that they held on, and remained a 
force i n the I aw-end compu t i ng field. But 
the computer division of Atari was losing 
money, and we would had almost surely been 
sold or liquidated by now, but for the 
acquisition of the Atari Home Computer 
division by Jack Trammiel, the wizard who 
had made Commodore what it was. 

Now, the ST's have put the 3-bits out 
even more than the Commodore 64 . 8-b i t 

hackers bought new ST's, feeling that the 
3-bits were lost causes. The people left 
are feeling cheated by the ST's, ( think, 
and don't like what's been done tot he 8- 
bits. I think that that is fair to say. 
With everyone more or less acknowl edg i nq 
that the 8-bits, if not dying, were 

<P I ease see ED I TOR 1 flL, page 8 ) 

.30.SR.C.©. €laggititfis& 


1st edition. Eaati Eii-av man. rial *A 

1st edition Easy Drav manual 
only $20; Computer Vor keen ter 
34" x 43" X 24", Excellent Cond,$S0; 
6' Printer Cable $15 
Call Gary 741-7461 



Area code 619, 300/1200 BAUD, 24 hours a day 
unless otherwise noted 

Code Name 





Fred’s Place 



560-81 73 







The Highlands 




The Atari Fortress 





8-bit SDACE 





Penthouse Suite 





Sherwood Forest 





! Aardvark 

8-bit /ST 









ST MIDI Connection 





Emerald City BBS 





! Computer Blvd. 





Computer Plus BBS 





* Computer Outlet 



282-681 5 

1 = TCxe, 2 = Forem, 3 * BBS Express 
4 = Michtron (ST) 

(*=f.imited hours, NMagic Sac support) 

For oorrec tioos or oJJitions, p loose 
eon foe f ff>e editor f 

17 ways to 3ciII almost any 

By Robert Handley 

Reprinted from the CIA ROM 

1. Don't attend meetings, but if you do, 
arrive late . 

2. Be sure to leave before the meeting is 
closed . 

3 . llever have anything to say at the 
meeting; vail until you get outside , 

4. Vhen at meetings, vote to do everything, 
then go home and do nothing . 

5. The next day, find fault with officers and 
members . 

6 . Take no part in the organisation's affairs . 

7. Be sure to sit in the back so you can talk 
things over with a friend . 

8. Get all the organisation will give you, but 
don't give the organisation anything back 
in return . 

9. llever ask anyone to .join the organ 
isation . 

ID. At every opportunity, threaten to resign 
and try to get others to do the same . 

1 1 . Talk cooperation, but don't cooperate . 

12. If asked to help, say you haven't the 
time . 

13. never read anything pertaining to the 
organization . 

14. never accept an office, as it is easier to 
criticize than to do things . 

15. If appointed to a committee, never give 
any time or service to the committee . 

16. If you receive a rewneval notice, ignore 

17. Don't do any more than you have to, and 
when others use their abilities to help the 
cause, howl because the organisation is ru 
by a clique . 


1040 ST Whine 

Reprinted from Bay Area Atari Users' Group newsletter 

Does your 1040 whine? When you boot up 
do you get the mosquito repellant? If so, 
this is for you. It is the official Atari 1040 
1040 power supply fix for units with a high- 
pitched whine emitting from them . The 
problem is the switching power supply 
used for the RS-232 port. It is supposed to 
switch at around ISkhz, but due to parts 
tolerance it sometimes falls lower than 
that, the result being an irritating audible 
"whine" or "squeal". It has falsely been 
described as a "drive whine" and defective 
power suppluy modules. The circuitry is 
actually on the motherboard. This mod 
also cures a video "flutter" which some- 
times occurs . Paint horizontal bars float up 
and down the screen . If you are not faint of 
heart, here are the instructions, for the 
modification . 

note : / do not recommend this 
mod if go* are not familiar vith 
elec Ironies ! You will be playing with 
the power supply, and if done incorrectly, 
you could fry your ST! I am providing the 
information so the folks who are out of 
warranty can do it themselves. Also, some 
dealers may not be familiar with the 
problem. I do not accept any responsibility 
for any permanent mushroom clouds you 
may cause. Okay, here goes: 

Unplug everything, especially the com- 
puter, then take the case off your 1040ST, 
Remove the power supply module. It's 
pretty straight-forward, as there is a plus 
for the wires. Untwist the grounding labs 
on the shield and lift the shield off the 
printed circuit board. The parts to change 
are on the motherboard, beneath where the 
power supply was, and to the right of the 
Rom's . 

Part no. 

1 Ohm 
100 uH 
100 pF 


5 Ohms 
220 uH 
330 pF 

How, looking at the 1040 from the front, 
here is where the stuff is: R17 is a 1 Ohm 
resistor (brown-black) and sit3 below C26 
(yes, that is a capacitor!). L4 is the resistor 
looking thingy (a moulded coil) to the right 
of the IC, a TL497. Its color code is brown- 
black-brown. The capacitor C28 is located 

(8-BIT TALK, from page 3) 

programming in FORTH and I will have 
some company. 7C-YA. 

Son 122£Iler is a charter member of 
SDACE, having been in the club since 
it 's formation “itray back ■a r hen A 
forth Jtcnkie, he has participated in 
the dab since its formation , let 's all 
welcome him to the slate, and yi tw 
him any and all scrpport and help n-w 
can . Sfe can't resurrect the R-bit SI<3 
from its gloom y, tired existence 
a Zone.: he needs YOUR help . 

a-Bit Users, Be To 
Ttie STieetfegi 

monda y. September 3rd! 

on the left of the IC, next to a larger black 
capacitor. Il3 color code is also brown- 
black-brown. While these locations should 
be accurate, please note that they could, 
and may, change at any time in your 
machine. It is very important for you to 
replace the correct components. 

You will need a good soldering iron, solder, 
and a de-coldering vacuum bulb-pump, 
solder wick or braid . The replacement 
parts should have a tolerance of plus or 
minus 5&. If not, it's time for the service 
center! The only part which is actually 
hard to find is the inductor (moulded coil) 
L4. The part number 35F1835 and is called a 
Deci-Ducloe . They cost around $4 each . 

Well, that's about it. Hopefully, after this 
point you will power up to a blissful silence 
and have saved $$$ to boot ! Good luck ... 

(Hole: This modification is to be per- 
formed at your own risk. If you're not sure 
what you’re doing, don't touch anything. 
Get a tech to do it . 

A good place to procure parts is G*j f e wc y 
Electronics, off of Convoy near Woo Chee 
Chong's; Industrial Ligttidaiors, also off 
Convoy near Supercuts, across from K- 
marl; or, of course, Radio Shaokii 


(EDITORIAL , from page 5) 

certainly stagnating, the 8-bit sector of 
SPACE began to wither , 

I'm talking loo much again: sorry. I'll 
shut up soon . 

The fact is, the S-bit SIG need3 your 
support or it will not be around in any form 
whatsoever in a year or so . You 8-bitters 
have to face it: fiere vill 

bo no 3- bit 313 in SPACE. One way 
or the other, the 8- bits will not last forever . 
Someday Atari will finally blow the whi3tle, 
order everyone our of the water, and 
announce the removal of the XE line. On 
GEnie, there is a special roundtable for 
computers that have been pulled off the 
line. It is basically a graveyard, occupied 
by TI-99, TS-1000 and TRS-80 users. Some- 
day, Atari 8-bit owners may be there . 

Vhat you have to ask yauself right now 
is, do I want this to happen soon? Do I want 
the formal death of the Atari 8-bits to 
happen sooner or later? 

Hlaybe my words seem harsh or unne- 
cessary. I don't think so. The 8- bit SIG is 
looking better than it has in the past year, 
but it it still headed for destruction if 
something is not done . 

It's undenyable: support for SDACE from 
the 8-bit membership has been terrible . 
Support of the newsletter by the 8-bit 
membership has been zero . most don't go 
to meetings, or call the SDACE 8- bit BBS. 
You're showing us that you don't care. 

If you own an 8-bit, please, if you do 
nothing el3e today, ask yourself the fol- 
lowing questions: 1) Do I believe that the 8- 
bit3 are beyond hope, 2) Am I ready to 
surrender all support from software dev- 
elopers and the user groups, and 3) Do I 
honestly care, or am I only holding on to 
the 8-bit because I can't possibly get a good 
price for it, and I can't afford a new 
computer anyway , 

I will lay it on the line: BSsSS® 3@ Sb@@©0 
In the Beckers and Ron miller, the 8-bit SIG 
has its best chance for re.juvination it has 
had in two years. The Beckers are pro- 
viding a highly successful disk of the 
month program, offering low-cost Public 
Domain software. $75 was earned at one 
meeting! That’s lerriffic! And Ron will get 
organisation back into the meetings, will 
help get things moving and interesting, 
and will provide the 8- bits with something 
they have been lacking for the longest 
time: leadership. Another fact to face: Re 
one has been availa ble in the club who is 

willin g to devote himself to the 8-bits . Dave 

Delgadillo neither owns nor uses an 8-bit 
machine; how can he be expectected to 
meet the needs of the of the 8-bit users? 
Him and most of the officers in SDACE are 
interested in the ST,, not in the 8- bits. I 
freely admit it: I am included in that list . 
want to help the 8-bitters, I really do, but 
I'm not an S-bit owner. That's why it's so 
great to see some people actually taking a 
stand to dedicate themselves to the 8-bil 
SIG and help give it a chance for survival . 

So, you 8-bit users have several things 
going for you: 

1) You have a new Vice Pres- 
ident, who will give his all to help 
keep the S-bit SIG churning; 

2) You have excellent disks of 
the month, filled with software, 
for a nominal contribution to 

3) You have a new meeting 
place, which allows vendors 
and sales of eq ui pment and 
software bu anuone ; and 

4 ) You have a recent increase 
in support by Atari and other 
companies, in the form of some 
new titles and hardware releases 

The 8-bit SIG does not haw to pass away 
in the near future. 8-bitters will have one 
last chance to start supporting their club . 
Support has gal to increase, or, and I truly 
believe this, there will be no S-bit SIG thi3 
time next year. I’m talking nothing 1 f 
On the line, here i3 what yon need to do if 
goir care at all about your 3-bit: 

1) GO to meeting s. See the new 
meeting place in Rlira mesa. If you can't 
even give this much, forget everything . 

2) Sup port the Disk of the month . 

If you want to increase the 8-bit hardware 
in the club, money must be earned by the 8- 
bit SIG . Buy a $5 disk and attain that goal . 

3) Help me hel p UOU . Write a review of 
one of the many pieces of software avail- 
able, or any kind of article you can think of'. 

I get no support or feedback from any 8-bit 
users. I’m no miracle worker, but to be fair, 
no one contributes for the ST's either. 

Sorry if I offended anyone with this 
evangalistic outpouring, but it needed to b 
said . I hope you won't let the 8-bit SIG die. 

- Peter Payne 

rurbo BASIC Compiler Problem 

By Jeff Colehour & Dick Hearsey 

Reprinted from 

The nev Turbo BASIC system has been 
discussed in many publications and is truly 
an outstanding BASIC for the 3-bit Atari, It 
is not only much faster than Atari BASIC, 
but it also has a compiler that provides an 
additional increase in speed for most ap- 
plications . 

A few limitations on the types of EASIC 
commands that can be used with the 
compiler have been presented, but ve have 
found another limitation that might be of 
interest to any one vho is considering the 
Turbo BASIC Compiler . 

The problem has to do with arithmetic 
operations on singly or doubly subscripted 
variables , The short program below works 
correctly when using the Turbo BASIC 
intrepreter only, but gives an error when 
run in the compiled mode. This is followed 
by a simble work around that does work in 
the compiled mode. 

P 30 Dim H1ATC3) 

40 mAT (11=1 
50 1T1AT £21 = 2 

60 mAT £3) = mAT £1) * mAT (2) 

70 PRII1T mAT (3) 

80 EEtD 

The result of running this in the compiled 
mode is ERROR 9 in LinE 0060: Array or 
String Dim error . A fix for this is to change 
line 60 and add line 65 as shown below: 

60 2 = mAT £11* THAT £21 
65 mAT (31 = 2 

The limitation i3 apparently that if 
arithmetic operations or subscripted 
variables are performed on one side of the 
operator ' a subscripted variable cannot 
appear on the other side. The aritmetic 
operation is part of the problem, because a 
statement such as mAT (23 = IRATCl) does 
not cause an error . Ve have also encount- 
ered similiar situations in which no error 
message was given but incorrect results 
were obtained when running in the 
compiled mode. If subscripted variables are 
being used it would be advisable to carefully 
compare results obtained from the 
compiled and interpreted modes. This is 
not a serious limitation, since the work 
around is fairly easy, but it could require 
code modifications to permit use of the 
Turbo BASIC compiler . ■ 











3548 HIDWAT DRIVE , 9UTE 'C 3 AN DIES), GA. 92110 
PHONE 224-5090 

San Diego Compter Society 

Htari SIG 

P.O. Boh 81444 

San Diego, Crl 92138 

Send, all correspondence fco; 



Permit No 1513 
San Oie go. Call? 

Sacra Efegp cfl&acpa ©acsragjaaacatp asaaSDoasaasSs 

\? a ®a SEIEH gdlijEl^S 

SaOQ SiSagjEJg @£nl DEl'OSQD SLCC NEWSLETTER exchange 

BOX 1506 

SAN LEANDRO , CA 94577-0374 

September 3-bit meeting will be Thursday, September 3rd, (the first Thursday of the 
month, qs always), at the new meeting place in mira mesa, at the Voods Clubhouse on 
Baywood,near Klira mesa Blvd (see map in the </arn<? I/O Connector or call editor for 
directions). ST workshop/magic Sac SIG will be same time and date as the 8-bit meeting, at 
Ilorth Park Rec Center , 2719 Howard Ave, in the Adult Room . normal ST SIG meeting will be on 
m on day, September 21st, at 6:30, also in the north Park Rec Center, in the Social Room. 

mark your calendar!!!