4502 datasheet(87/214 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

1-75

4502 Group

HARDWARE

Rev.2.01

Feb 02, 2005

REJ09B0193-0201

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

SNZP (Skip if Non Zero condition of Power down flag)

0000000011

003

–

(P) = 1

Grouping:

Other operation

Description: Skips the next instruction when the P flag is

“1”.

After skipping, the P flag remains un-

changed.

Executes the next instruction when the P

flag is “0.”

SNZT1 (Skip if Non Zero condition of Timer 1 inerrupt request flag)

1010000000

280

–

V12 = 0: (T1F) = 1

Grouping:

Timer operation

Description: When V12 = 0 : Skips the next instruction

when timer 1 interrupt request flag T1F is

“1.” After skipping, clears (0) to the T1F

flag. When the T1F flag is “0,” executes the

next instruction.

When V12 = 1 : This instruction is equiva-

lent to the NOP instruction.

Operation:

V12 = 0: (T1F) = 1 ?

After skipping, (T1F)

← 0

V12 = 1: SNZT1 = NOP

(V12 = bit 2 of interrupt control register V1)

SNZT2 (Skip if Non Zero condition of Timer 2 inerrupt request flag)

1010000001

281

–

V13 = 0: (T2F) = 1

Grouping:

Timer operation

Description: When V13 = 0 : Skips the next instruction

when timer 2 interrupt request flag T2F is

“1.” After skipping, clears (0) to the T2F

flag. When the T2F flag is “0,” executes the

next instruction.

When V13 = 1 : This instruction is equiva-

lent to the NOP instruction.

Operation:

V13 = 0: (T2F) = 1 ?

After skipping, (T2F)

← 0

V13 = 1: SNZT2 = NOP

(V13 = bit 3 of interrupt control register V1)

Operation:

(P) = 1 ?

MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)

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