Computer Hardware User's Guide

Instruction Set
13-9
Assembly Language Instructions
13.1.8 Illegal Instructions
The ’C3x has no illegal instruction-detection mechanism. Fetching an illegal
(undefined) opcode can cause the execution of an undefined operation. Proper
use of the TI TMS320 floating-point software tools will not generate an illegal
opcode. Only the following conditions can cause the generation of an illegal
opcode:
Misuse of the tools
An error in the ROM code
Defective RAM