MB89990 データシートの表示（PDF） - Fujitsu

部品番号

コンポーネント説明

メーカー

MB89990

8-bit Proprietary Microcontroller

Fujitsu 

MB89990 Series

(Continued)

Symbol

EP

PC

SP

PS

dr

CCR

RP

Ri

×

(×)

(( × ))

Meaning

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)

Condition code register CCR (8 bits)

Register bank pointer RP (5 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.)

Columns indicate the following:

Mnemonic:

Assembler notation of an instruction

~:

The number of instructions

#:

The number of bytes

Operation:

Operation of an instruction

TL, TH, AH:

A content change when each of the TL, TH, and AH instructions is executed. Symbols in

the column indicate the following:

• “-” indicates no change.

• dH is the 8 upper bits of operation description data.

• AL and AH must become the contents of AL and AH prior to the instruction executed.

• 00 becomes 00.

N, Z, V, C:

An instruction of which the corresponding flag will change. If + is written in this column,

the relevant instruction will change its corresponding flag.

OP code:

Code of an instruction. If an instruction is more than one code, it is written according to

the following rule:

Example: 48 to 4F ← This indicates 48, 49, ... 4F.

33

Share Link: