4506_M datasheet(86/213 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

4506 Group

HARDWARE

REJ09B0194-0201

SZC (Skip if Zero, Carry flag)

0000101111

02F

–

(CY) = 0

Grouping:

Arithmetic operation

Description: Skips the next instruction when the con-

tents of carry flag CY is “0.”

After skipping, the CY flag remains un-

changed.

Executes the next instruction when the con-

tents of the CY flag is “1.“

Operation:

(CY) = 0 ?

SZD (Skip if Zero, port D specified by register Y)

0000100100

024

–

(D(Y)) = 0

(Y) = 0 to 3

Grouping:

Input/Output operation

Description: Skips the next instruction when a bit of port

D specified by register Y is “0.” Executes the

next instruction when the bit is “1.”

Note:

Set 0 to 3 to register Y because port D is

four ports (D0–D3).

When values except above are set to regis-

ter Y, this instruction is equivalent to the

NOP instruction.

T1AB (Transfer data to timer 1 and register R1 from Accumulator and register B)

1000110000

230

–

Grouping:

Timer operation

Description: Transfers the contents of register B to the

high-order 4 bits of timer 1 and timer 1 re-

load register R1. Transfers the contents of

and timer 1 reload register R1.

Operation:

(T17–T14)

← (B)

(R17–R14)

← (B)

(T13–T10)

← (A)

(R13–R10)

← (A)

Operation:

(D(Y)) = 0 ?

(Y) = 0 to 3

0000101011

02B

SZB j (Skip if Zero, Bit)

00001000j

02j

–

(Mj(DP)) = 0

j = 0 to 3

Grouping:

Bit operation

Description: Skips the next instruction when the con-

tents of bit j (bit specified by the value j in

the immediate field) of M(DP) is “0.”

Executes the next instruction when the con-

tents of bit j of M(DP) is “1.”

Operation:

(Mj(DP)) = 0 ?

j = 0 to 3

MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)

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