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Addc add with carry addc – Motorola DSP96002 User Manual

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MOTOROLA

DSP96002 USER’S MANUAL

A - 21

ADDC

Add with Carry

ADDC

Instruction Fields:

(u u)

D

d d d

Dn.L

n n n

where nnn = 0-7

S

s s s

Dn.L

n n n

where nnn = 0-7

Timing:

2 + mv oscillator clock cycles

Memory:

1 + mv program words

DATA BUS MOVE FIELD

00

1sss

uu01

1ddd

31

14 13

0

OPTIONAL EFFECTIVE ADDRESS EXTENSION OR IMMEDIATE LONG DATA

Operation:

D.L + S.L + C

D.L (parallel data bus move)

Assembler Syntax:

ADDC S,D (move syntax - see the MOVE in-

struction description.)

Description:

Add the low portion of the two specified operands along with the C bit of the condition code register and

store the result in the low portion of destination operand D. When doing multiple precision addition, the

higher precision long words of the input variables must be moved to the low portion of the Dn register.

Input Operand(s) Precision: 32-bit integer.

Output Operand Precision: 32-bit integer.

CCR Condition Codes:

C

- Set if carry is generated from the MSB of the result. Cleared otherwise.

V

- Set if result overflows. Cleared otherwise.

Z

- Cleared if the result is not zero. Unchanged otherwise.

N

- Set if result is negative. Cleared otherwise.

I

- Not affected.

LR - Not affected.

R - Not affected.

A

- Not affected.

ER Status Bits:

Not affected.

IER Flags:

Not affected.

Instruction Format: ADDC S,D (move syntax - see the MOVE instruction description.)