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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%
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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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