TMPR4956C datasheet(257/286 Pages) TOSHIBA

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Chapter 15 CPU Instruction Set Summary

15-5

15.3.4

Special Instructions (Table 15.3.4)

There are special instructions used for software trap. The instruction format is R-type for all two.

Table 15.3.4 CPU Instruction Set: Special Instructions

Instruction

Description

Note

SYSCALL

System Call

MIPS I

BREAK

Break

MIPS I

15.3.5

Exception Instructions (Table 15.3.5)

These instructions are R-type or I-type. When the condition of the following instructions is true,

theTrap Exception occurres.

Table 15.3.5 CPU Instruction Set: Exception Instructions

Instruction

Description

Note

TGE

Trap if Greater Than or Equal

MIPS II

TGEU

Trap if Greater Than or Equal Unsigned

MIPS II

TLT

Trap if Less Than

MIPS II

TLTU

Trap if Less Than Unsigned

MIPS II

TEQ

Trap if Equal

MIPS II

TNE

Trap if Not Equal

MIPS II

TGEI

Trap if Greater Than or Equal Immediate

MIPS II

TGEIU

Trap if Greater Than or Equal Immediate Unsigned

MIPS II

TLTI

Trap if Less Than Immediate

MIPS II

TLTIU

Trap if Less Than Immediate Unsigned

MIPS II

TEQI

Trap if Equal Immediate

MIPS II

TNEI

Trap if Not Equal Immediate

MIPS II

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