4501_M datasheet(86/212 Pages) RENESAS

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Skip condition

Number of

cycles

Number of

words

Instruction

code

Flag CY

Skip condition

Number of

cycles

Number of

words

Instruction

code

Flag CY

Skip condition

Number of

cycles

Number of

words

Instruction

code

Flag CY

Skip condition

Number of

cycles

Number of

words

Instruction

code

Flag CY

INSTRUCTIONS

1-74

Rev.2.01

Feb 07, 2005

4501 Group

HARDWARE

REJ09B0192-0201

SEA n (Skip Equal, Accumulator with immediate data n)

0000100101

025

–

(A) = n

Grouping:

Comparison operation

Description: Skips the next instruction when the contents

of register A is equal to the value n in the im-

mediate field.

Executes the next instruction when the con-

tents of register A is not equal to the value n

in the immediate field.

Operation:

(A) = n ?

n = 0 to 15

SEAM (Skip Equal, Accumulator with Memory)

0000100110

026

–

(A) = (M(DP))

Grouping:

Comparison operation

Description: Skips the next instruction when the contents

of register A is equal to the contents of

M(DP).

Executes the next instruction when the con-

tents of register A is not equal to the

contents of M(DP).

Operation:

(A) = (M(DP)) ?

000111nnnn

07n

MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)

SNZ0 (Skip if Non Zero condition of external 0 interrupt request flag)

0000111000

038

–

V10 = 0: (EXF0) = 1

Grouping:

Interrupt operation

Description: When V10 = 0 : Skips the next instruction

when external 0 interrupt request flag EXF0

is “1.” After skipping, clears (0) to the EXF0

flag. When the EXF0 flag is “0,” executes the

next instruction.

When V10 = 1 : This instruction is equivalent

to the NOP instruction.

Operation:

V10 = 0: (EXF0) = 1 ?

After skipping, (EXF0)

← 0

V10 = 1: SNZ0 = NOP

(V10 : bit 0 of the interrupt control register V1)

SNZAD (Skip if Non Zero condition of A/D conversion completion flag)

1010000111

287

–

V22 = 0: (ADF) = 1

Grouping:

A/D conversion operation

Description: When V22 = 0 : Skips the next instruction

when A/D conversion completion flag ADF

is “1.” After skipping, clears (0) to the ADF

flag. When the ADF flag is “0,” executes the

next instruction.

When V22 = 1 : This instruction is equivalent

to the NOP instruction.

Operation:

V22 = 0: (ADF) = 1 ?

After skipping, (ADF)

← 0

V22 = 1: SNZAD = NOP

(V22 : bit 2 of the interrupt control register V2)

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