SH7021 datasheet(46/509 Pages) RENESAS

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Table 2.8

Addressing Modes and Effective Addresses (cont)

Addressing

Mode

Mnemonic

Expression

Effective Addresses Calculation

Equation

Immediate

addressing

#imm:8

The 8-bit immediate data (imm) for the TST, AND,

OR, and XOR instructions are zero-extended.

—

#imm:8

The 8-bit immediate data (imm) for the MOV, ADD,

and CMP/EQ instructions are sign-extended.

—

#imm:8

Immediate data (imm) for the TRAPA instruction is

zero-extended and is quadrupled.

—

2.3.3

Instruction Formats

The instruction format refers to the source operand and the destination operand. The meaning of

the operand depends on the instruction code. Symbols are as follows.

xxxx

Instruction code

mmmm

Source register

nnnn

Destination register

iiii

Immediate data

dddd

Displacement

Table 2.9

Instruction Formats

Source

Operand

Destination

Operand

Instruction

Example

0 format

xxxx

——

NOP

n format

—

nnnn: Direct

MOVT

xxxx

nnnn

Control register

or system

nnnn: Direct

STS

MACH,Rn

Control register

or system

nnnn: Indirect pre-

decrement register

STC.L

SR,@-Rn

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