Texas Instruments PLUS TI-89 - Manual (Page 389)

372 Chapter 22: Linking and Upgrading
22LINK.DOC TI-89/TI-92 Plus: Linking and Upgrading (English) Susan Gullord Revised: 02/23/01 1:23 PM Printed: 02/23/01 2:20 PM Page 372 of 18 22LINK.DOC TI-89/TI-92 Plus: Linking and Upgrading (English) Susan Gullord Revised: 02/23/01 1:23 PM Printed: 02/23/01 2:20 PM Page 372 of 18
This procedure assumes that:
¦ The two calculators are linked with the connecting cable as
described on page 366.
¦ The Chat program is loaded on both calculators. (A program
loaded on a
TI -92 must use SendCalc instead of SendChat .)
−
Use each calculator’ s Program Editor to enter the program.
— or —
−
Enter the program on one calculator and then use VAR-LINK to
transmit the program variable to the other calculator as
described on page 367.
To run the program on both calculators:
1. On the Home screen of each calculator, enter:
chat()
2. When each calculator displays its initial prompt, respond as
shown below.
On the: Type:
Calculator that will send
the first message. 1 and press ¸.
Calculator that will receive
the first message. 0 and press ¸.
3. Take turns typing a message and pressing ¸ to send the
variable msg to the other calculator.
Because the Chat program sets up an infinite loop on both
calculators, press ´ (on both calculators) to break the program. If
you press N to acknowledge the error message, the program stops
on the Program I/O screen. Press ‡ or N to return to the Home
screen.
Running the
Program
Note: For information about
using the Program Editor,
refer to Chapter 17.
Stopping the
Program