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Chapter 22: Linking and Upgrading 381

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 381 of 18

All user-defined variables, including functions and programs, can be

sent from a

to a

92 Plus

. However, they may behave

differently. Examples are:

Conflicts between

89 / TI

92 Plus

system variable, function, and

instruction names and

user-defined names.

Programs or functions that use symbolic local variables. On a

and

92 Plus

, a local variable must be initialized with a

value before it can be referenced (meaning that a local variable

cannot be used symbolically), or you must use a global variable

instead. This includes programs that evaluate strings as local

variables that are symbolic, such as

expr()

Any functionality that exists on a

92 Plus

and NOT on a

will NOT run as expected on a

. In some cases (text form),

the data will transfer but may give an error when run on the

. In

other cases (tokenized form), the data may not be sent to the

If the data contains only functionality available on a

, it can

probably be sent to and run on a

with the same results.

Exceptions include:

Graph databases (GDBs) will not be sent because the

and

92 Plus

use a GDB structure that has more information than the

GDB.

A function or program defined in terms of a variable such as

and then evaluated using some expression containing that same

variable will run on a

and

92 Plus

, but will cause a

Circular

definition

error on a

Some existing

functions and instructions have enhanced

functionality on a

and

92 Plus

(such as

NewData

setMode()

, and matrix functions that use the optional tolerance

argument). These functions and instructions may not be sent at

all or may cause an error on a

Archived variables will not be sent to a

. Unarchive the

variables first.

Data variables that contain headers will not be sent. Those

without headers will be sent only if the contents are

compatible.

Product software (base code) upgrades.

Flash applications.

You can upgrade a

to a

92 Plus

by installing a

92 Plus

Module. See the Texas Instruments web site

education.ti.com

for more information.

TI-92 to TI-89

or TI-92 Plus

TI-89 or TI-92 Plus

to TI-92