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Tandy Corp / JUdio Shact Inc. 



APRIL 1983 



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South Bay TRS-88 Users Group 
Pag* - Contents 

2. A MOTE OP THANKS TO HOLMES ENGINEERING, INC. 

3. SKIMPY NEWSLETTER 

3. RESULTS OP THE MEMBERSHIP SURVEY 
6. SOUPING UP YOUR TRS-88 MODEL I 
6. BCLECTRIC PLAGIARISM 
ALSO II 8BUG ROSTER CENTERPOLD 

SBOG seatlnga ara held the third Tuesday of aach month In 
tha north aaat cornar of Dyaan'a building att 

5481 Patrick Henry Drive 
Tim* - 7x15 to II 1 31 PM Santa Clara, Ca 

April 19, May 17, June 21 

Topic of the aonth i 

Graphics and tha TRS-81 

Feature*! Tha Meeting will be chaired by Mike McHenrv. 

1) Bob Louden will tall ua about a auper TRS-81 
bualneaa graphics package that his company has 
developed for Radio Shack. Bob will 
demonstrate tha package on a Model III with 
high resolution graphics. 

2) Mike HcHenry will review the graphica 
software available for MX-81 printera with 
graphtrax. 

3) Random access of quest ion e and answers. 

The topic for the May meeting will be computer recording 
media chaired by Sabrl Kawaah. June will feature hardware 
modifications chaired by Eric Brewer. Don't forgat the 
first Wednesday meeting on Hay 4th to discuse programming 
techniques, problems and answers. Bring your computer. 
mmmm ^^ 

Send Newaletter articles tot 

c/o Robert Byrd, Editor 
South Bay TRS-81 User Group 
P.O. Box 68116 
Sunnyvale, Ca 94188 

Deadline for the May newsletter isi 25 April 83. Plessa, 
aand articlaa via modem, or aaved on disc/tape. I will aea 
that your media is returned to you. Thanks . . . 



COPYRIGHT (C) 1983 SOUTH BAY TRS-88 USERS GROUP (8BUG) . 
WORLD RIGHTS RESERVED. HO PART OP THIS PUBLICATIOH HAY 
BE STORED IM A RETRIEVAL SYSTEM, TRANSMITTED, OS 
REPRODUCED IN ANY WAY, INCLUDING BUT NOT LIMITED TO, 
PHOTOCOPY, PHOTOGRAPH, MAGNETIC OR OTHER RECORD, WITHOUT 
PRIOR WRITTEN PERMISSION OP THE EDITOR. 

- 1 - 



April 1983 



** Your Steering Committee ** 



Member 



SBUG-80 
Username 



Phone 



Discussion Leaders: 

Mike McHenry (MCHENRY) 
Eric Brewer (BREWER) 
Sabri Kawash (SABRI) 
Treasurer: 

Larry Gunderson (TREAS) 
Newsletter Editor i 

Robert Byrd (EDITOR) 
Librarians: 

(disc) Gerry McKee (GMCKEE) 
(tape) Gary Dixon (GDIXON) 
(doc.) Bill Richerson 



(488) 245-4704 

(408) 252-9332 

(408) 732-5484 

(408) 259-5349 

(408) 732-6775 

(408) 926-4063 

(408) 262-6937 

(408) 257-8267 



** Other key individuals ** 



Assistant Editor: 

Dave Pox (DAVEPOX) 
Public Relations: 

Ron Carpenter (RON) 
Host Computer: 

SBUG-80 (EVERYONE) 

SBUG-80 Sysops: 

Robert Byrd (EDITOR) 

Eric Brewer (BREWER) 



(408) 255-3270 

(415) 726-3487 

(408) 737-SBUG 

(408) 732-6775 

(408) 252-9332 



If the need arises , feel free to give one of us a call. 



A NOTE OP THANKS TO 
HOLMES ENGINEERING, INC. 
3555 South 3200 West 
Salt Lake City, Utah 84119 Ph. (801) 967-2324 

It is my pleasure to announce that Holmes Engineering 
has contributed one of their Sprinter speedup kits to our 
host computer (SBUG-80). This has made double density 
possible on the eight inch disc drives. 

I have written a review of my experiences installing 
this fine piece of hardware (see table of contents for page 
number). I highly recommend the Holmes Sprinter as one the 
most economical ways to add life to your TRS-80 Model 
i/iii. SBUG-80 feels like a different computer with 5.36 
Mhz made possible by Holmes Engineering. 

The support of their product speaks for itself with 
their contribution. 

I feel that I can comfortably speak for all the 
members of SBUG and say. "THANK YOU HOLMES ENGINEERING, WE 
ENJOY AND APPRECIATE YOUR CONTRIBUTION 1 1 " 

Robert Byrd 
EDITOR @ SBUG-80 



- 2 - 



South Bay TRS-81 Users Group 

SKIMPY NEWSLETTER 

I an Borry for the lack of material in this months 
newsletter. This is NOT caused by lack of contributions, 
because there were many I The main problem is the one ounce 
limit in mailing per newsletter. I felt, SBUG members 
would prefer to have a membership list (CENTERFOLD ROSTER) 
to help improve communications among members. And of 
course, this took eight pages of of text away from this 
montha publication* 

Robert Byrd 
EDITOR SBUG-8i 



RESULTS OP THE MEMBERSHIP SURVEY 

About 51 percent of the current membership has 
returned the survey questionnaire that was distributed in 
the December newsletter. The results show that the average 
SBUG member has a Radio Shack Model I computer (69%), with 
5" disk drives (88%), a Epson MX-80 printer (52%) with a 
Hayes Smartmodem (21%). The most popular uses of the 
computers are word processing (43%), business (29%), 
computer literacy education (21%) , and games (19%) • The 
average member has belonged to SBUG for 2 years and about 
one-third are willing to contribute to club activities by 
writing articles, giving talks, teaching and group buys. 

In general, the members of SBUG have quite a large 
investment in hardware ($2,500-53000) and use their 
computers for serious work and education. Surprisingly, 
only 5% of the members use cassette for program storage. 
Only one disk user reported using TRSDOS as the primary 
disk operating system. In contrast, NEWDOS80 is used by 
72% of the members. CP/M use is on the rise with about 10% 
of the members using it now. The last survey was done two 
years ago. A comparison of results that survey with the 
current one is given below. 









larch 1981 


Ap 


ril 1983 


Number of 


roerabe 


rs 


100 




174 


Number re 


Bpondi 


ng 


81 




86 


Model I 






90% 




69% 


Model II 






4% 




2% 


Model III 






6% 




34% 


Disk 






82% 




94% 


Tape 






16% 




4% 


Stringy 






1% 




3% 


Modems 






32% 




70% 



The number of tape users has dropped from 16% to only 
4 percent now. We often hear that tape users are being 
neglected by the club. Apparently they have either left 

- 3 - 



the club, got disks, oc just don't like 
surveys. The number of members with modems 
from 32% to 70% currently, probably 
bulletin board. 



April 1983 

to fill out 

has increased 

due to our excellent 



The tables below summarize 
detail. 



the survey results in more 



YEARS IN SBUG 



years number 


percent 


4 or more 


10 


12% 


3 


19 


22% 


2 


25 


29% 


1 


18 


21% 


New 


14 


16% 


INTERESTS 




Word Processing 


37 


43% 


Business 


25 


29% 


Personal Pinance 


21 


24% 


Computer Literacy 


18 


21% 


Bobby 


18 


21% 


Games 


16 


19% 


Database 


15 


17% 


Software Development 


13 


15% 


Telecommunications 


13 


15% 


Taxes 


8 


9% 


Education 


8 


9% 


Engineering 


7 


8% 


COMPUTERS 




Model I 


59 


69% 


Model III 


29 


34% 


LNW 80 


4 


5% 


Color Computer 


3 


3% 


Model II 


2 


2% 


Pocket PC 1 


2 


2% 


Max 80 


1 


1% 


DISK AND TAPE STORAGE 




5" Disk 


76 


88% 


8" Disk 


6 


7% 


Cassette 


4 


5% 


Bard Disk 


4 


5% 


Stringy Ploppy 


3 


3% 


PRINTERS 




Epson MX-80 


45 


52% 


Radio Shack LP xx 


10 


12% 


DTC 300-382 


5 


6% 


Microline 60-82 


4 


5% 



- 4 - 



South Bay TRS-80 Users Group 

Others 34 

MODEMS 



40% 



Hayes Smartmoden 


18 


21% 


Radio Shack I 


9 


10% 


Radio Shack II 


8 


9% 


Racal Vadic 


3 


3% 


Signalman 


3 


3% 


Others 


15 


17% 


OTHER 


HARDWARE 




Onikron 1 


7 


8% 


Percom Doubler 


6 


7% 


LNW Expansion 


6 


7% 


LNW 5/8 


4 


5% 


Onikron 2 


3 


3% 


Alpha Joystick 


3 


3% 


DISK OPERATING SYSTEMS 




NEWDOS80 


62 


72% 


DOSPLUS 


14 


16% 


LDOS 


11 


13% 


CP/M 


8 


9% 


MULT I DOS 


4 


5% 


WORD PROCESSING 




Scripsit 


56 


65% 


Electric Pencil 


16 


17% 


Superscripsit 


7 


8% 


Lazywriter 


6 


7% 


Wordstar 


6 


7% 


Newscript 


3 


3% 


LANGUAGES 




Basic 


86 


100% 


Assembly 


25 


29% 


Fortran 


7 


8% 


Forth 


5 


6% 


Lisp 


2 


2% 


APL 


1 


1% 


Pilot 


1 


1% 


TELECOMMUNICATIONS 




Modera80 


32 


37% 


ST80III 


8 


9% 


Omniterm 


6 


7% 


Sterm 


3 


3% 


UTILITIES 





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April 1983 

Superutility 14 15% 

Trakcess 3 3% 

Tasmon 3 3% 

SPREAD SHEET 

Vislcalc 47 55% 

Supercalc 2 2% 

CONTRIBUTE TO CLUB ACTIVITIES 

Newsletter Article 29 35% 

Reviews 24 28% 

Talk 18 19% 

Teach Class 14 15% 

Group Buy II 11% 

Thanks to those who filled out the survey. A detailed 
listing of the data takes about 27 pages, but perhaps we 
can publish portions of it, say the hardware, in the 
newsletter. I an working on a program to have the 
interactive database online on SBUG-80 so we can keep it 
current. Send ne your completed survey, if you haven't 
done it yet, and I will add it to the database. Thanks 
also to those that have offered to contribute to the club. 
We will be in touch with you. 

Mike McHenry 
MCHENRY % SBUG-80 



SOUPING UP YOUR TRS-80 MODEL I 

INTRODUCTION 

Are you tired of the 1.77 MHs clock in your TRS-80 
Model I? Have you ever wished you could speed up your 
graphic programs? Wouldn't it be great to have double 
density on your 8 inch disc drives. There is a solution, 
and you can have all the features mentioned above. All you 
have to do is speedup your TRS-80 to 3.55 MHz, or faster, 
and all this is yoursl 

There are several speedup boards on the market, and 
they all work well when installed properly. The main 
difference in the modifications is ease of installation. 
The most popular of the speedup kits are the Archbold and 
the Holmes; therefore, I will limit my discussion to these 
two boards. Perhaps someone else in the club has had 
experience with other speedup modifications and would like 
to write us another review. 

THE ARCHBOLD 



- 6 - 



South Bay TRS-80 Users Group 

Augh, what a mess! The Archbold kit requires much 
modification to your system. The kit requires traces to be 
cut and an experienced steady hand with a soldering iron. 
I don't recommend this kit to those who have had little 
experience with hardware. 

There is, however, a handy feature that might 
encourage many to opt for the Archbold board, a 
multi-colored LED that replaces the conventional red LEO 
now existent on your Model I keyboard. The LED changes 
colors depending on the speed of the system. This 
indicator could be handy when running software that is 
speed dependent such as games. I would think that PROGGER 
at 3.55 MHs might be exciting, but tough for sure! 

THE HOLMES 

Relief at lastl This kit cures all the agony of the 
Archbold. There are only five wires to connect and one 
trace to cut in the keyboard. The wires connect using 
solder less clips, so there is no need to bring out the 
soldering ironl 

Most E/Is (Expansion Interfaces) have a data delay 
line caused by 137. For an additional $10 Holmes will 
include a replacement for this chip, so the E/I can handle 
the additional speed. 

If you have an older E/I, which has the buffer cable, 
the speedup modification my be a little more complicated. 
If you have any questions or problems make a quick call to 
Holmes Engineering. They will be happy to share with you 
their experiences. The phone number for Holmes Engineering 
is included with the documentation. 

The Holmes speedup kit includes some resistors, which 
they recommend, for soldering across your RAM chips if they 
are the slower 400-450 ns type. Don't do itlll RAM is 
very cheap these days. I recommend that you buy new 200 ns 
chips, and replace your older slower RAM. Remember, check 
the RAM in your E/I also. 

INTERFACE WITH DISC OPERATING SYSTEM 

A final modification to consider is whether to have a 
switch for setting high or low speed during disc I/O 
(input/output). I chose not to have the switch, because 
NEWDOS/80 is my primary operating system. NEWDOS/80 has 
the SYSTEM option "BJ-2' (use "BJ«3" when running at 5.36 
MHz) , which allows the disc I/O to speedup also. Instead 
of the switch, I installed the 4.7k resistor across U-10 as 
suggested by Holmes. Why would I mess with TRS-DOS when I 
have a beautiful modification like the Holmesl? 

EIGHT INCH DISC OPERATION IN DOUBLE DENSITY 

- 7 - 



April 1983 

With the 3.55 MHz available to your machine, you 
should be able to have double density on your 8 inch 
drives. Again, with NEWDOS/80 this is easy. Set the 
PDRlVEs as follows i 

Single Sided Double Density (8 inch disc) 

TD-F TC-77 SPT-26 TSR-1 GPL-3 

CAUTION!! Many 8 inch disc drives will work with 
"tsr*0", but once you go to double speed the track stepping 
pulse is also reduced. Therefore, you Bust make the 
"TSR-1" to give you the 5 as stepping rate. 

CONCLUSION 

The Holmes speedup board is great I If you wish to 
increase the capabilities of you Model I/III look into 
installing this fine piece of hardware. Pol low the 
instructions carefully, and you should have little if no 
problems. 

Robert Byrd 
EDITOR % SBUG-88 



ECLECTIC PLAGIARISM 

Try running that title through your spelling checker 
program] Seriously, I am going to present a few items that 
have been gleaned out of reading some of the newsletters 
that our club gets from other users groups in exchange for 
our newsletter. The ground rules seem to be that other 
users groups are free to use items if they are properly 
credited. 

On a regular basis, I will try to pick out a few items 
of possible interest. At the same time, I will try to get 
the sending and receiving of newsletters organized and 
properly catalog the newsletters into the documentation 
library so others can read them. 

This month things are somewhat hurried, as I didn't 
get the newsletters. So in an attempt to help with some 
newsletter material I have picked a few BASIC programs that 
might be interesting. 

If you want a copy of the programs, better than typing 
them, they will be available on the bulletin board. Have a 
friend download them for you if you don't have bulletin 
board capabilities. 

TICTOC/BAS 

This is from the User's Group of Delaware County, 
Prospect Park, PA; TUG - DC is the name of their 

- 8 - 



South Bay TRS-80 Users Group 

newsletter. January 1983 newsletter is the source. 

They represent this as a major breakthroughl A $4.95 
digital clock that only uses $2000 worth of computer 
hardware. 

Lines 10-60 do housekeeping and graphic set-ups for 
the digital numbers. 70-120 pick up hours, minutes and 
seconds from TIME$ of DOS. Line 130 prints the clock in 
the form HH MM SS. 140 routes back to the next update of 
TIME$. 

I have run it fine on Model III NEWDOS80 V2 and the 
author says it should run on other DOS which support the 
TIME$ function. 

5 'PROGRAM PROM TUG-DC, DELAWARE COUNTY USER'S GROUP (PA) 

6 'NEWSLETTER, JANUARY 1983, PG. 6 
10 CLEAR300:DEPSTRA-Z:DEFINTJ,K 

20 CLS 

30 M«CHR$(26)+STRING$(4,24) 

40 X-CHR$(128) :Y-CHR$(131) :Z-CHR$(191) 

50 A-X+Y+X+X t B-X+X+X+Y t C-X+Z+X+X : D-X+X+X+Z : E-Y+Y+Y+Z I 

F-Z+Y+Y+Z:G-Z+X+X+Z:H-Z*Y+Y+YtI-Y+Y+Y+Y 

60 N ( ) -F+M+G+M+ I : N ( 1 ) -C+M+C+M+A : N ( 2 ) -E+M+H+M+ I : 

N(3)-E+M+E+M4-IiN(4)-G+M+E+M+B:N(5)»H+M+E+M+ItN(6)-H+M+F+M+I: 

N ( 7 ) -E-f M+D+M+B : N ( 8 ) -F+M+F+M+ 1 1 N ( 9 ) -F+M+E+M+ 1 

70 J1-VAL(MID$(TIME$,10,1)) 

80 J2-VAL(MID$(TIME$,11,1)) 

90 J3-VAL(MID$(TIME$,13,1)) 

100 J4-VAL(MID$(TIME$,14,1)) 

110 J5-VAL(MID$(TIME$,16,1)) 

120 J6«VAL(MID$(TIME$,17,1)) 

130 PRINTe328,N(Jl) ; :PRINW36 ,N(J2) ; :PRINT§348,N(J3) ; » 

PRINT§356,N(J4)MPRINT§368 f N(J5)|iPRINT§376,N(J6) 

140 GOTO70 

The following two items are from the Voice of the '80 
Newsletter, January 1983, Vol3, No. 8, Page 14 (Fairfield 
County TRS-80 Users Group, Norwalk, CT. The author of the 
material is Alan Abrahamson. 

BOXED IN 

BORDER/BAS 

In response to the request for a program that would be 
fast, but not require machine code the following program 
was given. This program is a sample of a technique that 
will draw a border around the screen very rapidly. It uses 
space compression codes to get 1024 screen bytes into a 240 
byte printable variable. The code was developed by Alan 
Abrahamson and Cliff Ogilvie. 

When using it, you should print your text using PRINT? 
rather than the regular PRINT statements which will destroy 
the border. 

- 9 - 



April 1983 

If REM PROM VOICE OP THE '81 NEWSLETTER, JANUARY 1983 

28 REM VOLUME 3, NO 8, PAGE 14,15 

39 REM CODE by ALAN ABRAHAMSON AND CLIFF OLGIVIE 

49 REM CLEAR SOME STRING SPACE AND DBPINE S AS A STRING 

59 CLEAR 1999 i DEPSTR 8 

€9 REM BUILD THE SCREN IN 249 BYTES INTO VARIABLE S 

79 S -CHR$(191)+STRING$(61,143)+CHR$(191)+" "i 

S1-CHR$(191)+CHR$(253)+CHR$(191)+" ": 

Sl«Sl+S+Sl+Sl+Sl+Sl+Sl+Sl+Sl+Sl+Sl+Sl+Sl+Sl+CHR$(191)+STRING 

$ (61 ,188) +CHR$ ( 191 ) : S-CHR$ (28) +S+81 

89 REM PLACE A HEADING IN THE UPPER BORDER BOX AFTER 

PRINTING THE SCREEN 

99 PRINT Sf :PRINTe79,"THIS IS WHERE YOU POT YOUR HEADINGS 

FOR EACH SCREEN" | 

199 REM ENDLESS LOOP TO HOL THIS SCREEN IN PLACE FOR DEMO 

119 GOT0119 

EDTASM TO SCRIPSIT 

BDTASCII/BAS 

The following prog ran can be used to "massage" an 
EDTASM file into an ASCII file to allow it be loaded into 
SCRIPSIT in order to print it oat in a "pretty" form. It 
could be used, for example to format a file for newsletter 
printing using SCRIPSIT to control the Margins, etc. it 
looks like a straightforward way to do some of the things 
that we have been using "SPOOL" and "SPOOLSET" to do. 

The program will gat around the problem that SCRIPSI? 
has with the right arrow tab character which is recognised 
by EDTASM and not by SCRIPSIT. 

1 REM SOURCES VOICE OP THE '88 NEWSLETTER, JANUARY 1983, 
VOL 3 

2 REM NUMBER 8, PAGE 15 PROGRAM BY ALAN ABRAHAMSON 

5 REM EDTASN/TXT (CREATES ASCII PILE PROM EDTASM FORMAT) 

7 CLEAR 1999tDEFINT A-ZiFI— 1 

19 PRINT "WHAT IS THE NAME OP THE EDTASM SOURCE PILE" 

11 INPUT "GIVE NAME ** WITHOUT ** EXTENSION ";Z$: PRINT 

12 INPUT "WHAT IS THE EXTENSION? (PART AFTER THE / 
)"|X$: PRINT 

39 I$-J$+"/"4*$tOPEN "I",l,I$iO$-I$+"/TXT"iOPEM "0",2,0$ 

49 LINE INPUT fl,A$ 

59 IF 1«LEN(A$) AND RIGHTS (A$,l) -CHR$(&H1A) THEN 129 

€9 IP Fl THEN A$-MID$(A$,8) iFI-8 

79 A$-MID$(A$,7) 

89 D«INSTR(A$,CHR$(9)) tIF D>9 THEN 199 

99 PRINT A$zPRINT «2,A$sGOT049 

199 B-l+8*(INT((D-l)/8)+l)~D 

118 A$«LEFT$(A$,D-1)+STRING$(E," ") ♦NID$(A$,D+1) IGOT089 

129 PRINTS PRINT" END OP FILE"iCLOSB 

Isn Webb 

IANWEBB S BUG- 80 



- 19 - 




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