Radio Shack Deluxe RS-232 User manual

CAT. NO. 26-2226
Deluxe RS-232 Program Pak
Operation Manual
for the
TRS-808Color Computer
Radio /hack CUSTOM MANUFACTURED IN THE USA BY RADIO SHACK, ADIVISION OF TANDY CORPORATION

farm
m
TERMS AND CONDITIONS OF SALE AND LICENSE OF RADIO SHACK COMPUTER EQUIPMENT AND SOFTWARE
PURCHASED FROM ARADIO SHACK COMPANY-OWNED COMPUTER CENTER, RETAIL STORE OR FROM A
RADIO SHACK FRANCHISEE OR DEALER AT ITS AUTHORIZED LOCATION
CUSTOMER OBLIGATIONS LIMITED WARRANTY
A. CUSTOMER assumes full responsibility that this Radio Shack computer hardware purchased (the "Equipment"), and any copies of Radio
Shack software included with the Equipment or licensed separately (the "Software") meets the specifications, capacity, capabilities,
versatility, and other requirements of CUSTOMER.
B. CUSTOMER assumes full responsibility for the condition and effectiveness of the operating environment in which the Equipment and Software
are to function, and for its installation.
II. RADIO SHACK LIMITED WARRANTIES AND CONDITIONS OF SALE
A. For aperiod of ninety (90) calendar days from the date of the Radio Shack sales document received upon purchase of the Equipment, RADIO
SHACK warrants to the original CUSTOMER that the Equipment and the medium upon which the Software is stored is free from manufacturing
defects. THIS WARRANTY IS ONLY APPLICABLE TO PURCHASES OF RADIO SHACK EQUIPMENT BY THE ORIGINAL CUSTOMER FROM
RADIO SHACK COMPANY-OWNED COMPUTER CENTERS, RETAIL STORES AND FROM RADIO SHACK FRANCHISEES AND DEALERS AT ITS
AUTHORIZED LOCATION. The warranty is void if the Equipment's case or cabinet has been opened, or if the Equipment or Software has been
subjected to improper or abnormal use. If amanufacturing defect is discovered during the stated warranty period, the defective Equipment
must be returned to aRadio Shack Computer Center, aRadio Shack retail store, participating Radio Shack franchisee or Radio Shack dealer
for repair, along with acopy of the sales document or lease agreement. The original CUSTOMER'S sole and exclusive remedy in the event of
adefect is limited to the correction of the defect by repair, replacement, or refund of the purchase price, at RADIO SHACK'S election and sole
expense. RADIO SHACK has no obligation to replace or repair expendable items.
B. RADIO SHACK makes no warranty as to the design, capability, capacity, or suitability for use of the Software, except as provided in this
paragraph. Software is licensed on an "AS IS" basis, without warranty. The original CUSTOMER'S exclusive remedy, in the event of a
Software manufacturing defect, is its repair or replacement within thirty (30) calendar days of the date of the Radio Shack sales document
received upon license of the Software. The defective Software shall be returned to aRadio Shack Computer Center, aRadio Shack retail store,
participating Radio Shack franchisee or Radio Shack dealer along with the sales document.
C. Except as provided herein no employee, agent, franchisee, dealer or other person is authorized to give any warranties of any nature on behalf
of RADIO SHACK.
DExcept as provided herein, RADIO SHACK MAKES NO WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE.
E. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation(s) may not apply to CUSTOMER.
III. LIMITATION OF LIABILITY
A. EXCEPT AS PROVIDED HEREIN, RADIO SHACK SHALL HAVE NO LIABILITY OR RESPONSIBILITY TO CUSTOMER OR ANY OTHER PERSON
OR ENTITY WITH RESPECT TO ANY LIABILITY, LOSS OR DAMAGE CAUSED OR ALLEGED TO BE CAUSED DIRECTLY OR INDIRECTLY BY
"EQUIPMENT" OR "SOFTWARE" SOLD, LEASED, LICENSED OR FURNISHED BY RADIO SHACK, INCLUDING, BUT NOT LIMITED TO ANY
INTERRUPTION OF SERVICE, LOSS OF BUSINESS OR ANTICIPATORY PROFITS OR CONSEQUENTIAL DAMAGES RESULTING FROM THE
USE OR OPERATION OF THE "EQUIPMENT" OR "SOFTWARE". IN NO EVENT SHALL RADIO SHACK BE LIABLE FOR LOSS OF PROFITS, OR
ANY INDIRECT, SPECIAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF ANY BREACH OF THIS WARRANTY OR IN ANY MANNER
ARISING OUT OF OR CONNECTED WITH THE SALE, LEASE, LICENSE, USE OR ANTICIPATED USE OF THE "EQUIPMENT" OR "SOFTWARE".
NOTWITHSTANDING THE ABOVE LIMITATIONS AND WARRANTIES, RADIO SHACK'S LIABILITY HEREUNDER FOR DAMAGES INCURRED BY
CUSTOMER OR OTHERS SHALL NOT EXCEED THE AMOUNT PAID BY CUSTOMER FOR THE PARTICULAR "EQUIPMENT" OR "SOFTWARE"
INVOLVED.
B. RADIO SHACK shall not be liable for any damages caused by delay in delivering or furnishing Equipment and/or Software.
C. No action arising out of any claimed breach of this Warranty or transactions under this Warranty may be brought more than two (2) years
after the cause of action has accrued or more than four (4) years after the date of the Radio Shack sales document for the Equipment or
Software, whichever first occurs.
D. Some states do not allow the limitation or exclusion of incidental or consequential damages, so the above limitation(s) or exclusion(s) may
not apply to CUSTOMER.
IV. RADIO SHACK SOFTWARE LICENSE
RADIO SHACK grants to CUSTOMER anon-exclusive, paid-up license to use the RADIO SHACK Software on one computer, subject to the following
provisions:
A. Except as otherwise provided in this Software License, applicable copyright laws shall apply to the Software.
B. Title to the medium on which the Software is recorded (cassette and/or diskette) or stored (ROM) is transferred to CUSTOMER, but not title to
the Software.
C. CUSTOMER may use Software on one host computer and access that Software through one or more terminals if the Software permits this
function.
D. CUSTOMER shall not use, make, manufacture, or reproduce copies of Software except for use on one computer and as is specifically
provided in this Software License. Customer is expressly prohibited from disassembling the Software.
E. CUSTOMER is permitted to make additional copies of the Software only for backup or archival purposes or if additional copies are required in
the operation of one computer with the Software, but only to the extent the Software allows abackup copy to be made. However, for
TRSDOS Software, CUSTOMER is permitted to make alimited number of additional copies for CUSTOMER'S own use.
F. CUSTOMER may resell or distribute unmodified copies of the Software provided CUSTOMER has purchased one copy of the Software for each
one sold or distributed. The provisions of this Software License shall also be applicable to third parties receiving copies of the Software from
CUSTOMER.
G. All copyright notices shall be retained on all copies of the Software.
V. APPLICABILITY OF WARRANTY
A. The terms and conditions of this Warranty are applicable as between RADIO SHACK and CUSTOMER to either asale of the Equipment and/or
Software License to CUSTOMER or to atransaction whereby RADIO SHACK sells or conveys such Equipment to a third party for lease to
CUSTOMER.
B. The limitations of liability and Warranty provisions herein shall inure to the benefit of RADIO SHACK, the author, owner and/or licensor of the
Software and any manufacturer of the Equipment sold by RADIO SHACK.
VI. STATE LAW RIGHTS
The warranties granted herein give the original CUSTOMER specific legal rights, and the original CUSTOMER may have other rights which vary
from state to state.
K

TRS-80® Deluxe RS-232 Program:
®1983 Tandy Corporation
All Rights Reserved
This applications software for the TRS-80 Color microcompu-
ter is retained in aread-only memory (ROM) format. All por-
tions of this software, whether in the ROM format or other
source code form format, and the ROM circuitry, are copy-
righted and are the proprietary and trade secret information of
Tandy Corporation and/or its licensor. Use, reproduction or
publication of any portion of this material without the prior writ-
ten authorization by Tandy Corporation is strictly prohibited.
The license for using this software is printed in the front of this
manual.
TRS-80* Deluxe RS-232 Program Pak7"Owner's Manual
®1983 Tandy Corporation
All Rights Reserved
Reproduction or use, without express written permission from
Tandy Corporation, or any portion of this manual is prohibited.
While reasonable efforts have been taken in the preparation of
this manual to assure its accuracy, Tandy Corporation
assumes no liability resulting from any errors or omissions in
this manual, or from the use of the information contained
herein.

Table of Contents
Introduction 1
1/Setting Up the Deluxe RS-232 Program Pak System 3
Connecting aModem 3
Connecting aCassette Recorder 3
Connecting aPrinter 4
2/Using the Deluxe RS-232 Program Pak 5
Changing Communications Settings 5
3/A Sample Log-On Session 11
4/Technical Information 13
5/Specifications 21
in

Introduction
The Deluxe RS-232 Program PakT"is aTRS-80® Color Computer communications package designed to
increase your computer-to-computer communications ability. This Program Pak is equipped with built-in soft-
ware that lets you communicate with information services. With this cartridge, you can simultaneously con-
nect aserial printer and modem to your Color Computer. This means that while host-to-computer communi-
cations is in progress, you can print out the received information.
Its other special features include:
•Programmable Baud Rate capability
•Full- or Haif-Duplex capability
•Selectable 7- or 8-Bit Word Length
•1or 2 Stop Bit Selection
•The ability to transmit and receive BASIC and machine-language programs
This manual will show you how to:
•Set up your equipment when using the Deluxe RS-232 Program Pak
•Use the Deluxe RS-232 Program Pak's options to connect with aparticular host
•Transmit and receive BASIC programs
•Transmit and receive machine-language programs
•Save and load information stored in Memory (the RAM Buffer)
To use the Deluxe RS-232 Program Pak, you'll need a:
•Telephone
•TRS-80 Color Computer with at least 16K of RAM and Extended Color BASIC and aColor TV. (We suggest
Radio Shack's 16-230.)
•Amodem which allows your Computer to communicate with other computers over telephone lines. Radio
Shack provides several ol these. For example, the Modem I(26-1 172), the Modem II (26-1 173), the Tele-
phone Interface II (26-1 171 ), the Acoustic Coupler {26-1 174), and the DC-1200 High Speed Modem
(26-1002).
•Serial printer (optional) that is compatible with your Color Computer. Printers available include the DMP-100
(26-1253), DMP-200 (26-1254), and the DMP-400 (26-1251).

1/Setting Up the Deluxe RS-232 Program
Pak System
To insert the Deluxe RS-232 Program Pak into
your Color Computer, tollow these steps:
1
.
Be sure your Color Computer is turned OFF
2. Connect the television to the Color Computer.
(Make sure the television is tuned to Channel
3or 4and that the computer and television are
set at the same channel.)
3. Insert the Deluxe RS-232 Program Pak into the slot
on the right side of the Computer. See Figure 1.
Figure 1. Inserting the RS-232 Program Pak
Jack on the
Connecting aModem
All equipment should be turned OFF Connect your
modem to the Deluxe RS-232 Program Pak using a
Model III RS-232C Cable (26-1408).
1.Make sure your RS-232C cable is properly
connected tQ the modem.
2. Plug the ©fesr ericS of alio RS-iS2C cabto into the
D«Iujs» HS=23i Program ^sk% RS-23gC oomfsotor.
Q&q Figure 2.
Note: When using aNull Modem Adapter for com-
puter-to-computer connection, do not be alarmed that
the adapter will not fit tightly to the Deluxe RS-232
Program Pak's RS-232C connector. Figure 2. Connecting aMo<
to the RS-232 Program Pa
Connecting aCassette Recorder
To transmit apreviously written BASIC or assembled machine-language program, you will need t
program into the Color Computer's memory from acassette recorder, such as the CCR-81 {26-12
"Transmitting and Receiving Programs" later in this manual for details.)
1
,
Connect the short cable (DIN plug on one end and three plugs on the other) to the CASSETTE
back of the Color Computer.
2. The three plugs on the other end of this cable are for connecting to the recorder. Consult your
Color Computer Operation Manual and the cassette recorder owner's manual for instruction
necting these three plugs to acassette recorder.

Figure 3. Connecting aPrinter to the Color Computer
Connecting aPrinter
You can simultaneously connect amodem and aserial printer to your Color Computer. To connect the Color
Computer to aprinter, you will need a4-Pin DIN to a4-Pin DIN Cable {26-3020).
1
.
Connect one end of the cable to the Serial I/O Connector at the rear of the Computer.
2. Connect the other end of the cable to the printer.
3. Consult your printer owner's manual for operating instructions.
4. After connecting the printer, press ©3SHS) to print the received information.
Note: To avoid losing characters, printers may need an additional time delay after receiving acarriage return.
If your print-outs have excessive characters, see your information/time-sharing service to obtain the proper
configurations. To avoid losing characters, the DMP-1 00 requires that you communicate at 110 or 75 baud.

2Using the Deluxe RS-232 Program Pak
Follow this procedure to power up your system:
1
.
Turn the Color Computer and television ON.
The OK prompt should appear on the Screen. If OK does not appear on the Screen, press RESET.
2. Once the OK prompt is displayed, type:
EXEC &HC000 dSTEE)
or
EXEC 49152 (ENTER)
The "Protocol Menu" will then appear:
*^^^^^^^^^^^mmmm^^^^jA
Deluxe RS-232 Program PaK 1.00.00
BBAUD RATE: 300
DDUPLEX: HALF
WWORD LENGTH: 8BITS
PPARITY: NONE
SSTOP BITS: 1
LAUTO LINE FEED: ON
UUPPERCASE ONLY MODE
MMODEM I
ZTERMINAL COMMUNICATIONS MODE
CHANGE ITEM OR BREAK FROM MENU: 1
*COPR. 1983 TANDY CORP.
y^^^^^^^^^^J
On power-up, the Protocol Menu will always show these settings. If your information service communicates
at 300 baud, half-duplex, 8-bit word length, no parity, 1stop bit, auto line feed ON, uppercase, and is using a
Modem I(non-auto dialing modem), you only need to press [BREAK] to begin communications.
Changing Communications Settings
Communications settings are changed by pressing the alphabetic key which precedes aspecific option on
aline of the Protocol Menu. For example, press CD to change the Word Length. The program will provide
the available options. You will not have to type in aspecific value.
After you have satisfactorily set up your communications requirements, press (BREAK) to proceed. If, after es-
tablishing communications, you discover that asetting was not correct, you can. return to the Protocol Menu
by pressing (BREAK).Then correct the error without disconnecting the communications.
The following is an explanation of all Settings Options:
B
Baud Rate (75, 110, 300, 600, 1200, 2400, 4800, 9600, 19200)
Press and release (g) to advance to the next option. If you do not specify abaud rate, the baud setting is 300.
After 19200, the next displayed baud rate setting is 75.

The maximum baud rate which will dependably transmit BASIC programs from one Color Computer to an-
other is 1200 baud. Assembly language programs can be transferred at up to 19200 baud.
After you have made your selection, either change another setting option or press (BREAK) to begin
communications.
Note: To avoid losing characters when communicating at 4800, 9600, or 19200 baud, the host may have to
pause after every carriage return and restrict lines to 32 characters.
D
Duplex (Half or Full)
Press GD to change the Duplex setting. Your options are either Full (for simultaneous two-way communica-
tion), or Half (for one-way communication). The default protocol is Half-Duplex. (If Full-Duplex is selected,
you may need to "reselect" Full-Duplex after establishing contact with the database.)
When you decide on the Duplex setting, press another letter key for the next desired option line.
w
Word Length (7 or 8Bits)
Press d) to change the Word Length setting. There are two options— 7Bits and 8Bits. Press ®to display
the desired option. Select another option or press (BREAK) to begin communications.
P
Parity (None, Odd, Even, or Ignored)
Press (B to change the Parity option. Your options are None, Odd, Even, or Ignored. (If you select Ignored
Parity, the Parity Bit will be accepted, but no Parity faults will be recognized.) Press (B and release until the
Parity option you need appears. Select another option or press (BREAK) to begin communications.
s
Stop Bits (1 or 2)
Press ©to change the Stop Bit. The option is either 1or 2. Press and release ©until the specific setting
appears. Then, either make another selection or press (BREAK) to begin communications.
L
Auto Line Feed (On or Off)
This option lets you select whether carriage returns will be interpreted as carriage return/line feed (referred to
as "Automatic Carriage Return"), or carriage return only. Press QD to turn the Auto Carriage Return ON or
OFF.
u
Uppercase Only Mode
This option lets you communicate in either Uppercase only, or Upper and Lowercase option. Press and
release GD for Uppercase only, or for Upper/Lowercase. Then either make another selection or press
(BREAK) to begin communications.

M
Modem Type
The Deluxe RS-232 Program Pak provides you with the flexibility of amanual or automatic dialing modem.
The options available are MODEM Iand MODEM II.
The MODEM Ioption is for non-auto-dialing modems and can be applied to Acoustic Couplers.
The MODEM II option is designed for automatic dialing modems, but gives you the flexibility to ignore the
automatic dialing capability.
To change the modem type, press and release (S) for the required option.
Modem I(manual dialing) Users ..
.
If you want the MODEM I(or manual dialing modem) option, proceed when the option appears. Then make
another selection or press (BREAK) to proceed with communications.
Modem II (auto-dialing) Users . .
.
When the MODEM II option is displayed, you have the option to enter the telephone number to be dialed
automatically when you are ready to proceed with communications.
•For PHONE #, type the telephone number (up to 19 digits) and press (ENTER) .
Note: To provide atwo-second pause between numbers, insert an (3D- This is especially useful if you need
to get an outside line to atelephone number. For example, the number 9*1234567 would tell the modem to
dial 9and wait for an outside line (*); then dial the telephone number.
•For PHONE #, press (BREAK) to ignore the automatic dialing option.
Communications Modes
Pressing (D will display the following
communications modes:
TERMINAL COMMUNICATIONS MODE
STORE AND FORWARD
TRANSMIT BASIC PROGRAM
RECEIVE BASIC PROGRAM
TRANSMIT MACHINE CODE
RECEIVE MACHINE CODE
GO TO "BASIC"

TERMINAL COMMUNICATIONS MODE Selecting this mode lets you use your Color Computer as an inter-
active terminal with ahost system. Most information services can be contacted via this mode.
Before using the Terminal Communications Mode, make sure that all of your settings are in agreement with
the host you are contacting. Make sure your modem is properly connected to the Deluxe RS-232 Program
Pak.
Auto Dialing Modem Users . .
.
If you are using an auto-dial modem (Modem II), the number is dialed automatically as Specified in the
MODEM II option. After the carrier is established with the host system, you should proceed with the log-on
protocol as outlined by that host system.
1
.
If you are using an auto-dial modem, be sure your modem is on and set for auto-dial and originate. If you
have a Modem II, the DTR switch should be OFF.
2. Press [BREAK) and the host's number will be dialed. With the Modem II, the CD light will go ON when the
host answers the telephone.
3. When the CD light goes ON, send the character prescribed by the particular information service. For ex-
ample, acommonly used response is "C»which is initiated by pressing ©QD- After sending your re-
sponse, you should receive the next prompt from the host.
Manual Dialing Modem Users . .
.
If you are using amanual dial modem, check your communications settings which should be in agreement
with those of the host system.
1
.
Press (BREAK) and dial the host's telephone number.
2. When the phone has been answered, you will hear ahigh-pitched tone.
•If you have aModem I, set it to ORIG. When the tone changes to alower tone, gently hang up the phone.
•If you have aDC-1200 High Speed Modem, press the ORG button. Release it when the OH indicator illu-
minates. Then, gently hang up the phone.
•If you are using aModem II, the DTR Switch (at the rear of the modem) must be in the OFF position. The
POWER switch should be ON. The MODE switches should be set at MAN/ORIG. When you hear the
tone, gently hang up the phone.
3. Proceed with the log-on.
STORE AND FORWARD Select this mode if the host system uses store and forward (advanced storage)
protocol.
1
.
At the Protocol Menu, press (BREAK) .
2. If you are using aModem Ior II, turn the DTR switch ON.
3. Type the prescribed log-on information and press (BREAK) .The following prompt appears:
PLACE CALL
(If you are using aModem II, the telephone number will automatically be dialed at this point. Modem II
users should proceed to step 5.)
4. Dial the host's telephone number. When the phone is answered, you will hear ahigh-pitched tone. When
the low-pitched tone is added to the high-pitched tone, gently hang up the phone.

5. The Store and Forward information service should then load up to eight pages. The Deluxe RS-232 Pro-
gram Pak enters the page scrolling mode when carrier is lost (CD light on modem). You can also enter this
mode by typing (SHiFT)m. To scroll through the stored pages, use the ©and ©keys. Press (BREAK) to exit
the scrolling mode and return to Terminal Communications mode.
6. If you have aserial printer, press ©(CLEAR) to print the received information. The printer will automatically
stop when all pages in memory have been printed, or when you press any key to stop the printing.
TRANSMIT BASIC PROGRAM You can transmit or receive BASIC or Machine-Language programs. Any
program transmitted must be stored in memory prior to transmission.
Transmitting aBASIC Program ..
.
1
.
Power-up the system, making sure the cassette recorder is properly connected to the Color Computer.
2. When the Protocol Menu appears, press 2) until the GO TO BAS ICsetting appears. Press (BREAK).
3. Type NEW (ENTER) to clear out any existing program.
4. Be sure the tape is completely rewound and the plugs are all in place.
5. Push the PLAY button down until it locks.
6. Type the CLOAD command with the name of your program. For example: CLOAD "NAME "(ENTER)
7. After the program has loaded, you will need to return to the Protocol Menu to transmit your program. To
return to the Protocol Menu, type:
EXEC &HC000 INTEH)
or
EXEC 49152 dNKH)
Note: If you are using an auto-dial modem, enter the phone number of the computer with which you are
going to communicate by following the standard dialing sequence.
8. Make sure your communications settings are the same as the other Deluxe RS-232 Program Pak user.
Press (Z) until the TRANSMIT BASIC PROGRAM message appears.
9. Press (BREAK) to begin transmission.
Note: If the program you load exceeds the memory capacity of your Color Computer, you will receive an O/M
(out of memory) error message. To check the available memory at the BASIC screen, type ?MEM (ENTER).
Transmitting aMachine-Language Program ..
.
1
.
Power-Up the system, making sure the cassette recorder is properly connected to the Color Computer.
2. When the Protocol Menu appears, press the ®key six times until the GO TO BASIC message appears.
Press (BREAK1 .
3. Type NEW (ENTER) to clear out any existing program.
4. Be sure the tape is completely rewound and the plugs are all in place.
5. Push the PLAY button down until it locks.
6. Type the CLOADM command with the name of your program. For example: CLOADM "PROGRAM "(ENTER) .
7. After the program has loaded, you will need to return to the Protocol Menu to transmit your program. To
return to the Protocol Menu, type:
EXEC &HC000 (ENTER)
or
EXEC 49152(fNTIH)

Note: If you are using an auto-dial modem, enter the phone number of the computer with which you are
going to communicate by following the standard dialing sequence.
8. Be sure your communications settings are the same as the other Deluxe RS-232 Program Pak user.
Press the (D key four times. At TR ANSM ITMACH INE CODE you must enter the starting and ending
address of the program (using decimal numbers).
9. Type the starting address and press (ENTER) .Type the ending address and preSs (ENTER) .
10. Press dfilM)-
Note: If the program you load exceeds the memory capacity of your Color Computer, you will receive an O/M
(out of memory) error message. To check the available memory, type ?MEM (ENTER) when the OK prompt is
displayed.
RECEIVE BASIC PROGRAMS To receive aBASIC Program:
1
.
At the Protocol Menu, select the RECE IME BAS ICPROGRAM communications mode. Press (BREAK).
2. The received program will appear on the Screen line-by-line. Press any key to stop the process and return
to the Protocol Menu.
3. After the entire program has been received, return to the Protocol Menu by typing EXEC &HC000
(ENTER").
4. At the Protocol Menu, press and release CD until GO TO BASIC appears. Then, press (BREAK).
5. Type LIST (ENTER) and the received program will be displayed.
The program can now be saved onto tape using CSAVE.
RECEIVE MACHINE CODE
1
.
At the Protocol Menu, select the RECE IME MACH INE CODE communications mode. The following
prompt appears:
STARTING ADDRESS?
2. Type the starting address of the machine-language program to be received (in decimal numbers) and press
(ENTER) .
3. Press (BREAK) .
4. The program is received one byte at atime, and each byte appears on the Screen to show that data trans-
fer is in progress.
5. At the Protocol Menu, press and release ©until the GO TO BASIC message appears. Then press
(BREAK) .
6. Save the machine-language program on cassette using the CSAVE command.
Saving aBASIC or Machine-Language Program onto Cassette Tape . .
.
1
.
Insert ablank cassette into the recorder.
2. Press the recorder's PLAY and RECORD buttons at the same time until they lock.
3. Type:
CSAME "filename" (ENTER)
where filename is any sequence of eight or fewer characters.
4. When the program has been saved, OK will appear on the Screen and the recorder's motor will automati-
cally shut off.
5. Type EXEC &:HC000 UNTER) or EXEC 43152 (HUE) to return to the Protocol Menu.
10

3/ Sample Log-On
This sample session will use an example to show you how to use the Terminal Communications Mode of the
Deluxe RS-232 Program Pak.
During the sample session, you will be shown how to make selections from the Deluxe RS-232 Program Pak
Setting Menu and how to contact ahost once you have selected your settings.
Let's suppose that you are using aModem II (automatic dialing) and you want to contact ahost that uses
the following settings:
300 Baud Rate
Full-Duplex
8-Bit Word Length
No Parity
1Stop Bit
Auto Line Feed On
Upper and Lowercase
To establish communications with this host, you would need to:
1
.
Power-up the System. Be sure all peripherals are properly connected.
2. Type EXEC &HC000 (ENTER) or EXEC 49152 (HUE) to display the Protocol Menu.
3. When the Protocol Menu appears, compare the default settings (those shown on the initial Protocol Menu)
with those required by the host.
4. The only settings for the host that need to be changed are:
Duplex
Word Length
Upper and Lowercase
Modem Type
5. To change these settings:
•Press (B) to change the Duplex setting to Full-Duplex.
•Press QD to change the Uppercase setting to Upper and Lowercase.
•Press (M) to change the modem setting to Modem II. Then, type the telephone number and press (ENTER] .
6. Set the modem to ON and AUTO/ORIG.
7. Press (BREAK) .The number will be automatically dialed.
11

4/Technical Information
Special Characters
Key/s Function ASCII Visible
Character
CTL ©NONE
CTL7 CD 7B
CTL 8CD 5B n
CTL 9CD 5D i
CTLO CD 7D
CTL- CD 7C
CTL: Q7E -*>
CTL@ (ESCAPE) 1B NONE
CTL« (PEP 7F D
CTL, Q5F «
CTL. CD 5E -*-
CTL/ /5C
CIL(£LEAR) Printer toggle NONE
CTL (BREAK) RS-232C Break* NONE
*Note: The RS-232 Break is an interrupt and its use depends on the host system.
The heart of the Deluxe RS-232 Program Pak is the Synertek 6551 ASCI. It has an on-chip baud rate genera-
tor, programmable interrupts and status register for ease of operation, false start bit detection, and echo
mode.
This ASCI board is memory mapped to addresses FF68 to FF6B (Hex).
The 6551 uses 4memory addresses for the following functions:
Address Write Read
FF68
FF69
FF6A
FF6B
Transmit Data
Register
Soft Reset
Receiver Data
Register
Status Register
Command Register
Control Register
This table shows that only the Command and Control registers are bidirectional. The Soft Reset operation
clears the 6551 internal registers but does not cause any data transfer. Therefore, the data written is a"don't
care." ARES* from the bus will clear all registers in the 6551 ,while aSoft Reset will only disable interrupts
and transmitter, turn off the echo mode, and clear the Overrun Error flag.
The following shows the Status, Command, and Control Registers and gives programming examples for
each:
13

STATUS REGISTER
The Status Register is used to indicate to the processor the status of various SY6551 functions.
7654321
STATUS SET BY CLEARED BY
Parity Error* =No Error
1=Error
Self Clearing**
SFraming Error* =No Error
1=Error
Self Clearing**
Overrun* =No Error
1=Error
Self Clearing**
Receive Data
Register Full
=Not Full
1=Full
Read Receive
Data Register j
Transmit Data
Register Empty =Not Empty
1=Empty Write Transmit
Data Register
DCD =DCD Low
1=DCD High Net Reusable
Reflects DCD
State
DSR =DSR Low
1=DSR Low Net Reusable
Reflects DSR
State
IRQ
I
=No
Interrupt
1=Interrupt
Read
Status Register
•NO INTERRUPT GENERATED FOR THESE CONDITIONS.
•CLEARED AUTOMATICALLY AFTER AREAD OF RDR AND
THE NEXT ERROR-FREE RECEIPT OF DATA.
HARDWARE RESET
PROGRAM RESET
76543 2
|0 |-|-| 1||
1
||
l-l-l-l-l-lo -l-t
14