7906 datasheet(487/531 Pages) RENESAS

487 / 531 page

L(DIR), Y

Function

Operation

length (Bit)

Addressing Modes

op n #

IMP

IMM

DIR

DIR, X DIR, Y (DIR) (DIR, X) (DIR), Y

Symbol

L(DIR)

op n #

op n # op n # op n #

op n #

APPENDIX

Appendix 6. Machine instructions

7906 Group User’s Manual Rev.2.0

20-82

← b15 … b0 ←

← b7 … b0 ←

Rotate to the left by n bits

m = 0

(n = 0 to 65535)

m = 1

(n = 0 to 255)

x = 0

←S + 1

←M(S)

←S + 1

←M(S)

x = 1

←S + 1

←M(S)

PLY

PSH

(Note 17)

M(S to S – i + 1)

←A, B, X…

←S – i

i: Number of bytes corresponding

to register pushed on stack

PUL

(Notes 18

and 22)

A, B, X…

←M(S + 1 to S + i)

←S + i

i: Number of bytes corresponding

to register restored from stack

PLX

x = 0

←S + 1

←M(S)

←S + 1

←M(S)

x = 1

←S + 1

←M(S)

RLA

(Note 3)

RMPA

(Note 19)

m = 0

Repeat

(B, A)

←(B, A) + M(DT:X)✕

M(DT:Y) (Signed)

←X + 2

←Y + 2

←i – 1

Until i = 0

m = 1

Repeat

(BL, AL)

←(BL, AL)+M(DT,X)

M(DT,Y) (Signed)

←X + 1

←Y + 1

←i – 1

Until i = 0

i: Numder of repetitions (0 to 255)

16/8

31 5 3

07 +

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