4501 datasheet(79/212 Pages) RENESAS

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INSTRUCTIONS

1-67

4501 Group

HARDWARE

Rev.2.01

Feb 07, 2005

REJ09B0192-0201

IAK (Input Accumulator from port K)

1001101111

26F

–

Grouping:

Input/Output operation

Description: Transfers the contents of port K to the bit 0

(A0) of register A.

Note:

After this instruction is executed, “0” is

stored to the high-order 3 bits (A3–A1) of

Operation:

(A0)

← (K)

(A3–A1)

← 0

IAP0 (Input Accumulator from port P0)

1001100000

260

–

Grouping:

Input/Output operation

Description: Transfers the input of port P0 to register A.

IAP1 (Input Accumulator from port P1)

1001100001

261

–

Grouping:

Input/Output operation

Description: Transfers the input of port P1 to register A.

Operation:

(A)

← (P1)

IAP2 (Input Accumulator from port P2)

1001100010

262

–

Grouping:

Input/Output operation

Description: Transfers the input of port P2 to the low-or-

der 2 bits (A1, A0) of register A.

Note:

After this instruction is executed, “0” is

stored to the high-order 2 bits (A3, A2) of reg-

ister A.

Operation:

(A1, A0)

← (P21, P20)

(A3, A2)

← 0

Operation:

(A)

← (P0)

MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)

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