HCS12 datasheet(106/452 Pages) FREESCALE

106 / 452 page

S12CPUV2 Reference Manual, Rev. 4.0

106

Freescale Semiconductor

Operation:

(B) + (M)

⇒ B

Description:

Adds the content of memory location M to accumulator B and places the

result in B. This instruction affects the H status bit, so it is suitable for use in

BCD arithmetic operations. See DAA instruction for additional information.

ADDB

Add without Carry to B

ADDB

CCR Details:

HIN

––

∆

–

∆∆∆∆

H: B3

• M3 + M3 • R3 + R3 • B3

Set if there was a carry from bit 3; cleared otherwise

N: Set if MSB of result is set; cleared otherwise

Z: Set if result is $00; cleared otherwise

V: B7

• M7 • R7 + B7 • M7 • R7

Set if two’s complement overflow resulted from the operation;

cleared otherwise

C: B7

• M7 + M7 • R7 + R7 • B7

Set if there was a carry from the MSB of the result; cleared

otherwise

Source Form

Address

Mode

Object Code

Access Detail

HCS12

M68HC12

ADDB #opr8i

ADDB opr8a

ADDB opr16a

ADDB oprx0_xysp

ADDB oprx9,xysp

ADDB oprx16,xysp

ADDB [D,xysp]

ADDB [oprx16,xysp]

IMM

DIR

EXT

IDX

IDX1

IDX2

[D,IDX]

[IDX2]

CB ii

DB dd

FB hh ll

EB xb

EB xb ff

EB xb ee ff

EB xb

EB xb ee ff

rPf

rPO

rPf

rPO

frPP

fIfrPf

fIPrPf

rfP

rOP

rfP

rPO

frPP

fIfrfP

fIPrfP

HCS12 Datasheet(PDF) 106 Page - Freescale Semiconductor, Inc

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