Texas Instruments TI-89 Developer's Guide

Appendix A: System Routines — Apps
321
TI
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89 / TI
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92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
OO_InstallSystemHook
(continued)
Example:
/* This single-attribute hook frame overrides the system date format. */
FRAME(DateHook, OO_SYSTEM_FRAME, NULL, OO_DATE_FORMAT, 1)
ATTR(OO_DATE_FORMAT, "YYYY.MM.DD")
ENDFRAME
pFrame datehook;
.
.
.
/* Hook new date format into system */
OO_InstallSystemHook((pFrame)&DateHook, &datehook);

Texas Instruments TI-89 Specifications

General

Display size (HxV)	100 x 160 mm
Memory type	639K FLASH ROM, 188K bytes RAM
Compatible operating systems	Operating System 2.09
Battery type	AAA