4571 datasheet(95/126 Pages) RENESAS

95 / 126 page

Rev.1.02

May 25, 2007

Page 95 of 124

REJ03B0179-0102

4571 Group

MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)

TAY

(Transfer data to Accumulator from register Y)

Instruc-

tion

code

Number of

words

Number of

cycles

Flag CY

Skip condition

001

11 2 01 F 16

Opera-

tion:

(A)

← (Y)

Grouping:

Description: Transfers the contents of register Y to register A.

TAZ

(Transfer data to Accumulator from register Z)

Instruc-

tion

code

Number of

words

Number of

cycles

Flag CY

Skip condition

101

11 2 05 3 16

Opera-

tion:

(A1, A0)

← (Z1, Z0)

(A3, A2)

← 0

Grouping:

Description: Transfers the contents of register Z to the low-order 2 bits

(A1, A0) of register A. “0” is stored to the high-order 2 bits

(A3, A2) of register A.

TBA

(Transfer data to register B from Accumulator)

Instruc-

tion

code

Number of

words

Number of

cycles

Flag CY

Skip condition

000

10 2 00 E 16

Opera-

tion:

(B)

← (A)

Grouping:

Description: Transfers the contents of register A to register B.

TDA

(Transfer data to register D from Accumulator)

Instruc-

tion

code

Number of

words

Number of

cycles

Flag CY

Skip condition

010

01 2 02 9 16

Opera-

tion:

(DR2

−DR0) ← (A2−A0)

Grouping:

Description: Transfers the contents of the low-order 3 bits (A2

−A0) of

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