APPENDIX B Bus Operation List

Table B-1

Bus Operation List (10/11)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CODE

MNEMONIC

~

 

Cycle

Address bus

Data bus

RD

WR

RMW

 

 

 

 

 

 

 

 

 

 

 

 

31

CALL ext

6

 

1

N +2

Address divergence

1

0

0

 

 

 

 

 

 

 

ahead (L)

 

 

 

 

 

 

 

 

2

0

0

0

 

 

 

 

 

3

SP -1

Return address (L)

0

1

0

 

 

 

 

 

4

SP -2

Return address (H)

0

1

0

 

 

 

 

 

5

Address divergence

The following

1

0

0

 

 

 

 

 

 

ahead

instruction

 

 

 

 

 

 

 

 

6

Address divergence

The following

1

0

0

 

 

 

 

 

 

ahead +1

following instruction

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

21

JMP ext

4

 

1

N +2

Address divergence

1

0

0

 

 

 

 

 

 

 

ahead (L)

 

 

 

 

 

 

 

 

2

0

0

0

 

 

 

 

 

3

Address divergence

The following

1

0

0

 

 

 

 

 

 

ahead

instruction

 

 

 

 

 

 

 

 

4

Address divergence

The following

1

0

0

 

 

 

 

 

 

ahead +1

following instruction

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

01

MULU A

8

 

1

N +2

The following

1

0

0

 

 

 

 

 

 

 

following instruction

 

 

 

 

 

 

 

 

2

0

0

0

 

 

 

 

 

to

 

 

 

 

 

 

 

 

 

 

8

0

0

0

 

 

 

 

 

 

 

 

 

 

 

 

11

DIVU A

17

 

1

N +2

The following

1

0

0

 

 

 

 

 

 

 

following instruction

 

 

 

 

 

 

 

 

2

0

0

0

 

 

 

 

 

to

 

 

 

 

 

 

 

 

 

 

17

0

0

0

 

 

 

 

 

 

 

 

 

 

 

 

RESET

7

 

1

0

0

0

 

 

 

 

 

2

0FFFDH

Mode data

1

0

0

 

 

 

 

 

3

0FFFEH

Reset vector (H)

1

0

0

 

 

 

 

 

4

0FFFFH

Reset vector (L)

1

0

0

 

 

 

 

 

5

0

0

0

 

 

 

 

 

6

Start address

The following

1

0

0

 

 

 

 

 

 

 

instruction

 

 

 

 

 

 

 

 

7

Start address +1

The following

1

0

0

 

 

 

 

 

 

 

following instruction

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

249

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Image 261
Fujitsu F2MC-8FX manual Table B-1 Bus Operation List 10/11