Appendix A: System Routines — Utility
TI-83 Plus Developer Guide
11
Beta Version May 16, 2001
SetExSpeed
(continued)
Determine if the app is running on operating system version 1.13 or higher and
if so, run at the fast clock frequency:
B_CALL getBaseVer ; operating system version
; in (A, B)
CP 2 ; major version
JR NC,above112 ; if 2.x then > 1.12
CP 1 ; if 0.x then < 1.12
JR NZ,below112 ; major version is 1
LD A,B ; minor version
CP 13 ; C if minor version < 13
JR C,below112 ; later than version 1.12
above112:
LD A,0FFh ; set fastest speed possible
B_CALL SetExSpeed
below112:
.
.
.
Example:
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