Radio Shack TRS-80 User manual

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!I LIMITED WARRANTY ~
1~ For a period of 90 days from the date of delivery. Radio Shack warrants to the ~(
Q..~ ong1nal purchaser that the computerhardware umt shall be free from manufac- ~;,
~ tunng defects. This warranty 1s only applicable to the original purchaser who ~
1~ purchased the unn from Radio Shack company-owned retail outlets or duly ~~
~ authonzed Radio Shack franchisees anddealers. This warranty 1s voided if the ~
~ urnt 1s sold or transferred by purchaser to a third pany. This warranty shall be ~
~ void 1f this units case or cabinet 1s opened. 1f the un11 has been subjected to ~
I improper or abnormaluse.
or ifthe unit is altered or modified If a defectoccurs ~f
during the warranty period. the unit must be returned to a Radio Shack store. ~i
~ franchisee, or dealer for repair, along with the sales ticket or lease agreement. ~
~ Purchaser's sole and exclusive remedy in the event of defect is hmited to the I
~ correction of the defect by ad1uslment. repair. replacement. or complete refund
~ at Radio Shack's election and sole expense Radio Shack shall have no obli-
gation 10 replace or repair expendable items. ~
~ Any statements made by Radio Shack and 1ts employees.including but not hm- ~
) ~ rted to. statements regarding capacity, suitab1hty for use, or performance ofthe ~/
~~ unit shall not bedeemed a warranty or representation by Radio Shack for any ~:
'~ purpose nor give rise 10 any habdrty or obhga11on of Radt0 Shack ~
~ !E:>~f
•
;.~ ' EXCEPT AS SPECIFICALLY PROVIDED IN THIS WARRANTY OR IN THE ~~· · ~
RADIO SHACKCOMPUTER SALES AGREEMENT THERE ARE NO OTHER ~
WARRANTIES. EXPRESS OR IMPLIED. INCLUDING. BUT NOT LIMITED
~~ TO, ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS ~'
~ r~~L~ ~~~Tli~tt~l~RR6~f~J~ ~~N~¥~~:1~~~~~C~~~~ig1~~~~i~ .~
~, SE QUENTIAL OR OTHER SIMILAR DAMAGES ARISING OUT OF ANY - ;
{~ BREACH OF THIS WARRANTY OR OTHERWISE 7-SO ~
i . 2IBllllml~lli~l..W..M

Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
0 Special features 0 Equipment needed
Connections (Controller to Computer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Loading the Operating Program ( Ca ssette Systems) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
O Model U~ 1 odel lll . Level 1Machines 0 Model I and Model 111. Level 11Machines0 Color
Computers
Loading the Operating Program (Disk Sy~tem ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
0 Model I0 Model lll
Operation . .......... . .................. . . . . . ............ .
0 Direct Command Mode 0 Programrrnng Mode 9
Special Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... .... . .. ..... 20
0 Using the Controller Progr.un wuh Other BASIC Program ~ 0 Savmg the Program on Disk
0 Shonened Controller Program
Module Installation and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .......... . .. . .... 28
0 Lamp Dimmer and Appliance Modules 0 Wall Module 0 Operational Notes 0 Local
Control
Commo n-Sen se Troublesh oo ti ng ... .. . . ................ .. . ... .. ...... ........ . ..... .. 34
0 Intermittent or Occasional Difficulties 0 P owe r Interruptions 0 Inter co m Systems

2
Plug 'n Power Controller Owner's Manual:
Copyright«:> 1981 Tandy CorporJtion,
Fon Wonh. Tcita s 76102. U.S.A.
All rights n:servcd.
Reproduction or use, without eitpress written permission from l'dndy Corporation, of any por1ion of this manual, is
prohibited. While reasonable effons have been rakcn in the preparation of the manual to assure its accuracy, Tundy
Corporation assumes no liability resulting from any errors or omissions in this rnanua.I or from the use of the infor·
mation obtained herein.
Printed in the United States of America
JO 9 8 7 6 5 4 3 2

Introduction
Th e TR S- 80 Plu g 'n Powdr" Co ntro ll er is u co nveni e nt a nd easy-t o- use system w hi ch co nn ec ts to yo ur
TRS-80 computer and ca n be progra mm ed to co nt rol lig ht s and app li ances in your home or office.
The re is no special wi rin g. Comma nd signals a re se nt over t he ex is tin g el ec t rical w ire s.
Sp ecial Features
• Controls lights and small appliances by computer while you arc home oraway
• Turns lights on or off
• Dims or brigh tens lig h ts
• Tums on or offsuch appliances as fons, coffee pots. radios. and TV sets.
Equipment Needed
This TRS-80 Plug 'n Power system includes the Plug ·n Power Controller and cassette tapes containing
the necessary software. To operate this system. you will need any Model I. Model Ill, or Color
Computer, and one or more of the following (see Figure I ):
Ap pl ia nce M od ul e (R ad io Shack Ca tal og Number 61-2681)
La mp Di mm er Mo dule (C at. N o. 61-2682)
Wa ll Modul e (Cat. No. 61-2683)
The abo ve it ems arc not in c lud ed in t his pac kage and mu st be pu rchased separat ely. (l ns ta ll at io n of
th e Wa ll M od ul e requires kn ow ledge of electrical wi rin g p rac ti ces.)
3

\'Vall Module
C•t No. 26-2683
Figure 1. Plug 'n Power Control Modules
Lamp 01mme1
Modula
Cu . N o.61 ·2682
Connections (Controller to Computer)
Refer to Figure 2.
I. Connect th e CO MPt.:T ER cable on back of the Controller to the Cas se tt e or Tape co nn ector on the
rear ofyour Computer.
2. Connect a casse tt e player (CTJ<-80 or eq ui valent) to t he CASSETTE co nn ector on b ac k of th e
Controller.
3. Connect t he POWER cord from th e Controller to an elec tri cal AC outlet.
Refer to the Module Installation sec ti on for hook- up and in stallation notes fo r the control modules.
4

Figu re 2. Controller Connections
5

Loading the Operating Program
(Cassette Systems)
Model I/Model III, Level I Machin es
I. Position t. he swit ch on top of t he Contro ll er to CASS. This allows nomial use of the cassette port for
loading programs from cassettes.
2. Insert the Level I/Color cassette into the recorder with the Level Is ide up. Rewind the tape and
prepare the recorder to be played. Be sure t he recorder's volume control is properly adjusted.
3. Power up or res et the syst em to BAS I C.
4. To load the cont.roller program type CLOAD (EHil]D. After the program is loaded, place the
Cont.roller's switch to C01'T. A clock format should appear on the screen: 00 :00. Refer to the
Operati on section before continuing.
Model I/Model III, Level Il Machines.
I. Position t he swi tch on top of the Contro ll er to CASS. Th is will allow cassette programs to be loaded
in the usual manner.
2. lnsert the Level II casseue into the recorder. For 16K RAM computers, u se the 16K side; with 32K
or 48K of RAM use the 32K side. Rewind the tape and prepare t he recorder. Be sure the reco r de r's
vo lum e co n tro l is pr ope rl y adj ust ed .
3. Power up or reset t he compu ter. Set th e approp ri ate memory si1 .e for th e program being u sed :
l 6K RAM -28670
32K RAM-45055
48 K RAM-45055
If us in g a Model rn comp ut er. t ype L when CASS? appears on th e screen.
6

4. Af t er the system is in Level II OA SIC or Model Ill BASIC. 1ype SYSTEM tElilEB). • ?w ill then be
displayed. Type L CEHIEID. and the !ape will begin loading. When loading is complete another •?
will be displayed. Position th e switch on the Con1roller to CONT. Type I (£HIEB) to execute th e
program.
5. A clock format should appear on the screen: 00 : 00. Refer to the Operation section before
continuing.
Color Computers
I. Position the sw it ch on top of the controller to CASS. This will allow nom1ul use of the cassette port
for loading cassette programs.
2 Insert the Level IJColor cassette into the recorder with the Color side up Re~md the tape and
prepare the recorder. Be sure the recorder's volume control is properly adjusted.
3. To load the Controller program;
For 4K computers type: For 16K computers type:
CLEAR 0 CEBlIID
CLOAOM CEBlIID
After the program has been loaded. OK will appear on the screen.
CLOAOM (IHIEJD
4. Posi ti on the controlle r' s switch to CONT and type EXEC tIHIE.ID to execute the program.
5. Aclock format should appear on the crcen: 00 : 00. Refer to th e Operation section before
continuing.
7

8
Loading the Operating Program (Disk Systems)
Model I
Use the TAPEDISK program 10 l ond 1h e Conrroller program into memory and then copy it into a
specified file on th e disk . To use TAPEDISK. co nn ec1 the recorder direcrly to the TRS·80 tape jack. not 10
th e Expan s ion l ni erface jack.
I. Pos iti on th e sw itch on top of th e Co nt ro ll er to CASS.
2. Insert th e Level acassette tape into the recorder. For 16K RA M computers. use the 16K '>idc of the
tape: with 32 Kor48K of RAM use the 32K s id e. Rewind 1h ~ tape and prepare t he recorder to be
played.
3. To load a nd execute TAPEDISK. type TAP ED ISKCUilm). TAl'hl>ISK will come up with th e prompt: ? .
To load the Controller program type C CEHIEID.
4. When th e tape ha s loaded. yo u arc ready to copy th e program from memory on to di sk. Type in the
following substituting th e dri\'e u ~ed for d.
For 16K ma c hines:
F LICHT /C MD : d 7 100 7010 7 12BtEHllID
For 32K and 48K machine s:
F LICHT /C MD: d B l00 0010 Bl 28 CEHIEID
Now type E CERiml to return to TRSDOS. After the Comroller pro grn rn is loaded 0 111 0 di sk, th e
program can be executed fr om TR Sl>OS by typing:
LI c HT CERIEID