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Related Manuals for Texas Instruments PHP1220
Summary of Contents for Texas Instruments PHP1220
- Page 1 Texas Instruments Home Computer RS232 Interface Card Model No. PHP1220...
- Page 2 Federal Communications Commission Requirements Concerning Radio Frequency Interference The Texas Instruments Home Computer and peripherals generate and use radio frequency (RF) energy. If not installed and used properly (as outlined in the instructions provided by Texas Instruments), this equipment may cause interference to radio and television reception.
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Page 3: Interface Card
Texas Instruments Home Computer • RS232 Interface Card Model No. PHP1220 IMPORTANT Record the serial n u m b e r f r o m the label on the u n i t and purchase date i n the space below. T h e serial n u m b e r is i d e n t i f i e d b y the w o r d s "SER. - Page 4 • Q U I C K R E F E R E N C E G U I D E SOFTWARE S W I T C H OPTION ENTRIES A p p l i c a b l e to Option P a r a l l e l P o r t BAUD R AT E = 110, 300, 600,...
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Page 5: Table Of Contents
RS232 Interface Card TA B L E OF C O N T E N T S I n t r o d u c t i o n 4 Set-Up Instructions 5 Inserting the RS232 Interface Card6 Testing the RS232 Interface Card7 Removing the RS232 Interface Card7 Connecting Accessory Devices 7 Addressing Accessory Devices 8... -
Page 6: I N T R O D U C T I O N
I N T R O D U C T I O N The Te x a s I n s t r u m e n t s RS232 Interface Card is a c o m m u n i c a t i o n s adapter featuring 8-bit parallel and RS232 serial capabilities t h a t enable y o u to connect a wide range o f accessory devices to y o u r T I Home Computer. -
Page 7: Rs232 Interface Card
RS232 Interface Card S E T- U P I N S T R U C T I O N S The steps involved i n inserting the RS232 Interface Card i n t o the Peripheral Expansion System and then checking its operation are included i n this section. Please read this material completely before proceeding. -
Page 8: Inserting The Rs232 Interface Card6
Inserting the R S 2 3 2 Interface Card 1. F i r s t turn off the computer console and all attached devices. 2. WA R N I N G : TO AVOID DAMAGING ACCESSORY CARDS, WA I T TWO (2) MINUTES AFTER TURNING OFF THE UNIT FOR THE POWER TO DISCHARGE BEFORE PROCEEDING. -
Page 9: Testing The Rs232 Interface Card7
RS232 Interface Card Te s t i n g t h e R S 2 3 2 I n t e r f a c e C a r d 1. T h e power switch is located on the f r o n t of the Peripheral Expansion System i n the lower left-hand corner. -
Page 10: Addressing Accessory Devices
A d d r es s i ng Accessory Devices In c o m p u t e r software programs w r i t t e n for use w i t h the RS232 Interface Card, the c i r c u i t r y t h r o u g h w h i c h data passes to and f r o m external devices is called a " p o r t , " and each o f these ports has a name. -
Page 11: Software Switch Options
RS232 Interface Card S o f t w a r e S w i t c h Options C o m p u t e r accessories often require switches to give instructions to the computer. These switches are sometimes a physical p a r t of the p r o d u c t and are set by hand. W i t h the RS232 Interface Card, however, these switches are p r o g r a m m e d into an integrated c i r c u i t contained i n the card to provide more flexibility. - Page 12 S o f t w a r e S w i t c h O p t i o n s a n d D e f a u l t Va l u e s SOFTWARE SWITCH OPTION D E FA U LT VA L U E S A p p l i c a b l e to Option O p e n / L i s t...
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Page 13: Statements And Commands1
RS232 Interface Card S t a t e m e n t s and Commands In this section, T I BASIC statements and c o m m a n d s are discussed o n l y as they relate to the RS232 Interface Card. - Page 14 The following examples are open statements for serial I/O. Example 1: O P E N #1: "RS232" Example 2: O P E N #A: "RS232.BA = 9600.EC. CH" Example 3: O P E N #B: "A$",RXED 32 where: B = 3 A$ = R S 2 3 2 / 2 .
- Page 15 RS232 Interface Card A n added feature o f the RS232 Interface Card is its editing capability. Before pressing the carriage r e t u r n or ENTER key, the person sending data from a t e r m i n a l can delete characters and recheck the data before transmission.
- Page 16 Tw o Home Computers can p r i n t and i n p u t to each other t h r o u g h t h e i r respective RS232 serial or parallel I/O ports. W h i l e one c o m p u t e r prints data out, the other can receive the data w i t h an INPUT statement.
- Page 17 RS232 Interface Card The S AV E a n d OLD C o m m a n d s Programs can be exchanged between T I Home Computers w h e n they are connected b y m o d e m s over the telephone n e t w o r k or i f their respective RS232 Interface Cards are directly cabled together.
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Page 18: C O M M O N Applications1
C O M M O N A P P L I C AT I O N S One c o m m o n application o f your RS232 Interface Card involves c o m m u n i c a t i n g w i t h another T I Home Computer. -
Page 19: Exchanging Programs With Save And Old Commands1
RS232 Interface Card E x c h a n g i n g Programs w i t h S AV E a n d O L D C o m m a n d s T h i s example demonstrates transferring a T I BASIC p r o g r a m f r o m one T I Home C o m p u t e r to another. -
Page 20: Advanced Examples
A D VA N C E D E X A M P L E S The three example p r o g r a m s i n this section illustrate three tasks c o m m o n l y performed by an RS232 Interface Card. -
Page 21: Example 3: Specifying Different Software Switches On The Same Port
RS232 Interface Card E x a m p l e 3: S p e c i f y i n g D i f f e r e n t S o f t w a r e S w i t c h e s on t h e Same P o r t T h i s program demonstrates h o w you can simultaneously use a single device i n more t h a n one way. -
Page 22: Service Information2
S E R V I C E I N F O R M AT I O N I n Case o f D i f f i c u l t y I f the RS232 Interface Card does n o t appear to be w o r k i n g properly, check the following: 1. -
Page 23: Exchange Centers
RS232 Interface Card I f the RS232 Interface Card or attached devices still do n o t appear to be w o r k i n g properly, first t u r n all power off. Next, remove the RS232 Interface Card f r o m the Peripheral Expansion System and the cables to attached devices. -
Page 24: If You Have Questions Or Need Assistance
Te x a s I n s t r u m e n t s w i l l consider such suggestions only i f they are freely given to Texas Instruments. I t is the policy of Texas Instruments to refuse to receive any suggestions i n confidence. -
Page 25: Error Codes
RS232 Interface Card A P P E N D I X A — E r r o r Codes Listed below are the error codes related to the operation o f TI BASIC programs t h a t use the RS232 Interface Card. OPEN: CODE 00 —... -
Page 26: Cable Diagrams
A P P E N D I X B — Cable D i a g r a m s Cables used to connect other computers, modems, o r terminals to the RS232 Interface Card m u s t use E I A RS232C 25-pin male connectors. F o r the first serial I/O port (RS232/1), t h e pins are defined as follows: Pin # M n e m o n i c... - Page 27 RS232 Interface Card I f a Y-cable is made for connecting a device to the second serial I/O p o r t (RS232/2), t h e pins are defined as follows: F u n c t i o n Pin # M n e m o n i c O u t p u t / I n p u t Ground...
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Page 28: Pin Diagrams
A P P E N D I X C — P i n D i a g r a m s RS232 Female Connector Data Set Pin Definitions F u n c t i o n Pin # Ty p e Driven Protective g r o u n d Received... -
Page 29: Glossary
RS232 Interface Card G L O S S A RY A S C I I — T h e A m e r i c a n Standard Code for Information Interchange w h i c h is a standard data transmission code t h a t was introduced to achieve c o m p a t i b i l i t y between data devices. -
Page 30: Warranty Coverage
(at TI's option) when the unit is returned by prepaid shipment to a Texas Instruments Service Facility listed below. The repaired or replacement unit will be warranted for three months from date of repair or replacement. -
Page 32: Texas Instruments
Being first i s o u r t r a d i t i o n . TEXAS INSTRUMENTS I N C O R P O R A T E D...
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