UPD70320 datasheet(21/76 Pages) RENESAS

21 / 76 page

ADD4S

SUB4S

CMP4S

ROL4

ROR4

INC

DEC

reg8

mem8

reg8

mem8

reg8

mem

reg16

reg8

mem

reg16

Operation Code

0 0 0 0 1 1 1 1

1 1 0 0 0

reg

0 0 0 0 1 1 1 1

mod 0 0 0 mem

0 0 0 0 1 1 1 1

1 1 0 0 0 reg

0 0 0 0 1 1 1 1

mod 0 0 0 mem

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 W

0 1 0 0 0 reg

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 W

0 1 0 0 1 reg

7 6 5 4 3 2 1 0

Group

Mnemonic

Operand

3 to 5

2 to 4

Bytes

Flags

AC CY V

dst BCD string

← dst BCD string + src BCD string

dst BCD string

← dst BCD string – src BCD string

dst BCD string – src BCD string

reg8

← reg8 + 1

(mem)

← (mem) + 1

reg16

← reg16 + 1

reg8

← reg8 – 1

(mem)

← (mem) – 1

reg16

← reg16 – 1

Operation

BCD

opera-

tion

0 0 1 0 0 0 0 0

0 0 1 0 0 0 1 0

0 0 1 0 0 1 1 0

0 0 1 0 1 0 0 0

0 0 1 0 1 0 1 0

1 1 0 0 0

reg

mod 0 0 0 mem

1 1 0 0 1

reg

mod 0 0 1 mem

Note

Incre-

ment/

decre-

ment

ALL

Upper

Byte

Lower

Byte

reg

ALL

Upper

Byte

Lower

Byte

mem

ALL

Upper

Byte

Lower

Byte

reg

ALL

Upper

Byte

Lower

Byte

mem

n: 1/2 of the number of BCD digits

Note The number of BCD digits is given in the CL register. The value can be set within 1 to 254.

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