MB89174LPF datasheet(41/50 Pages) FUJITSU

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MB89170/170A/170L Series

s INSTRUCTIONS (136 INSTRUCTIONS)

Execution instructions can be divided into the following four groups:

• Transfer

• Arithmetic operation

• Branch

•Others

Table 1 lists symbols used for notation of instructions.

Table 1

Instruction Symbols

Symbol

Meaning

dir

Direct address (8 bits)

off

Offset (8 bits)

ext

Extended address (16 bits)

#vct

Vector table number (3 bits)

#d8

Immediate data (8 bits)

#d16

Immediate data (16 bits)

dir: b

Bit direct address (8:3 bits)

rel

Branch relative address (8 bits)

Accumulator A (Whether its length is 8 or 16 bits is determined by the instruction in use.)

Upper 8 bits of accumulator A (8 bits)

Lower 8 bits of accumulator A (8 bits)

Temporary accumulator T (Whether its length is 8 or 16 bits is determined by the instruction in use.)

Upper 8 bits of temporary accumulator T (8 bits)

Lower 8 bits of temporary accumulator T (8 bits)

Index register IX (16 bits)

Extra pointer EP (16 bits)

Program counter PC (16 bits)

Stack pointer SP (16 bits)

Program status PS (16 bits)

Accumulator A or index register IX (16 bits)

CCR

Condition code register CCR (8 bits)

General-purpose register Ri (8 bits, i = 0 to 7)

Indicates that the very

× is the immediate data.

(Whether its length is 8 or 16 bits is determined by the instruction in use.)

(

× )

Indicates that the contents of

× is the target of accessing.

(Whether its length is 8 or 16 bits is determined by the instruction in use.)

((

× ))

The address indicated by the contents of

× is the target of accessing.

(Whether its length is 8 or 16 bits is determined by the instruction in use.)

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