4559 datasheet(94/148 Pages) RENESAS

94 / 148 page

Rev.1.04

Aug 23, 2007

Page 94 of 146

REJ03B0188-0104

4559 Group

MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)

OP1A

(Output port P1 from Accumulator)

Instruc-

tion

code

Number of

words

Number of

cycles

Flag CY

Skip condition

010

01 2 22 1 16

Opera-

tion:

(P1)

← (A)

Grouping:

Input/Output operation

Description: Outputs the contents of register A to port P1.

OP2A

(Output port P2 from Accumulator)

Instruc-

tion

code

Number of

words

Number of

cycles

Flag CY

Skip condition

010

10 2 22 2 16

Opera-

tion:

(P2)

← (A)

Grouping:

Input/Output operation

Description: Outputs the contents of the register A to port P2.

OP3A

(Output port P3 from Accumulator)

Instruc-

tion

code

Number of

words

Number of

cycles

Flag CY

Skip condition

010

11 2 22 3 16

Opera-

tion:

(P3)

← (A)

Grouping:

Input/Output operation

Description: Outputs the contents of the register A to port P3.

(logical OR between accumulator and memory)

Instruc-

tion

code

Number of

words

Number of

cycles

Flag CY

Skip condition

001

01 2 01 9 16

Opera-

tion:

(A)

← (A) OR (M(DP))

Grouping:

Arithmetic operation

Description: Takes the OR operation between the contents of register A

and the contents of M(DP), and stores the result in register

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