SC73P1601

HANGZHOU SILAN MICROELECTRONICS CO.,LTD

REV:1.4

2009.08.03

Http: www.silan.com.cn

Page 13 of 22

3. Arithmetic and logical instructions

Instruction

Operation

CF

SF

Cycle

ADD A, @LL

A

← A+RAM(LL)

---

/C

1

ADDC A, @LL

A

← A+RAM(LL)+CF

C

/C

1

ADD A, #k

A

← A+k

---

/C

1

ADD LL, #k

LL

← LL+k

---

/C

2

SUBRC A, @LL

A

← RAM(LL)-A-/CF

C

C

1

INC @LL

RAM(LL)

← RAM(LL)+1

---

/C

1

DEC @LL

RAM(LL)

← RAM(LL)-1

---

C

1

INC LL

LL

← LL+1

---

/C

2

DEC LL

LL

← LL-1

---

C

2

INC D

D

← D+1

---

/C

2

INC H

H

← H+1

---

/C

2

INC B

B

←B+1

---

/C

2

DEC D

D

← D-1

---

C

2

DEC H

H

← H-1

---

C

2

DEC B

B

← B-1

---

C

2

AND A, @LL

A

← A&RAM(LL)

---

/Z

1

OR A, @LL

A

← A | RAM(LL)

---

/Z

1

XOR A, @LL

A

← A^RAM(LL)

---

/Z

1

1.

ADD A, @LL

Add the contents of RAM pointed at by the LL to accumulator, store the sum in the

ACC. This operation will affect SF, SF=/CF.

2.

ADDC A, @LL

Add the contents of RAM pointed at by the LL register to accumulator with carry.

Store the carry bit in the CF. This operation will affect SF, SF=/CF.

3.

ADD A,#K

Add immediate K to accumulator. Store the sum in the ACC. This will affect SF,

SF=/CF.

4.

ADD L,#K

Add immediate K to the LL register. Store the sum in the LL. This will affect SF,

SF=/CF.

5.

SUBRC A, @LL

Subtract instruction with borrow(the complement of carry). Subtract the contents of

the accumulator from the contents of RAM pointed at by the LL register, subtract the

complement of the carry bit, then store the results in the accumulator, transfer the

carry bit to the CF, this will affect SF and CF, SF=CF.

6.

INC @LL

Increment instruction. Increment the contents of RAM pointed at by the LL register

by 1. This will affect SF, SF=/CF.

7.

DEC @LL

Decrement instruction. Decrement the contents of RAM pointed at by the LL register

by 1. This will affect SF, SF=CF.

8.

INC D

Increment instruction. Increment the contents of the D register by 1. This will affect

SF, SF=/CF.

9.

INC H

Increment instruction. Increment the contents of the H register by 1. This will affect

SF, SF=/CF.

10.

INC B

Increment instruction. Increment the contents of the B register by 1. This will affect

SF, SF=/CF.