HCS12 datasheet(201/452 Pages) FREESCALE

201 / 452 page

Glossary

S12CPUV2 Reference Manual, Rev. 4.0

Freescale Semiconductor

201

Operation:

If C

+ Z = 0, then (PC) + $0004 + Rel ⇒ PC

For unsigned binary numbers, if (Accumulator)

> (Memory), then branch

Description:

LBHI can be used to branch after subtracting or comparing unsigned values.

After CMPA, CMPB, CPD, CPS, CPX, CPY, SBCA, SBCB, SUBA, SUBB,

or SUBD, the branch occurs if the CPU register value is greater than the

value in M. After CBA or SBA, the branch occurs if the value in B is greater

than the value in A. LBHI should not be used for branching after instructions

that do not affect the C bit, such as increment, decrement, load, store, test,

clear, or complement.

See 3.8 Relative Addressing Mode for details of branch execution.

LBHI

Long Branch if Higher

LBHI

CCR Details:

HIN

––––––––

Source Form

Address

Mode

Object Code

Access Detail

HCS12

M68HC12

LBHI rel16

REL

18 22 qq rr

OPPP/OPO

(1)

1. OPPP/OPO indicates this instruction takes four cycles to refill the instruction queue if the branch is taken and three cycles

if the branch is not taken.

OPPP/OPO(1)

Branch

Complementary Branch

Test

Mnemonic

Opcode

Boolean

Test

Mnemonic

Opcode

Comment

r>m

LBGT

18 2E

+ (N ⊕ V) = 0

≤m

LBLE

18 2F

Signed

≥m

LBGE

18 2C

⊕ V = 0

r<m

LBLT

18 2D

Signed

r=m

LBEQ

18 27

Z = 1

≠m

LBNE

18 26

Signed

≤m

LBLE

18 2F

+ (N ⊕ V) = 1

r>m

LBGT

18 2E

Signed

r<m

LBLT

18 2D

⊕ V = 1

≥m

LBGE

18 2C

Signed

r>m

LBHI

18 22

+ Z = 0

≤m

LBLS

18 23

Unsigned

≥m

LBHS/LBCC

18 24

C = 0

r<m

LBLO/LBCS

18 25

Unsigned

r=m

LBEQ

18 27

Z = 1

≠m

LBNE

18 26

Unsigned

≤m

LBLS

18 23

+ Z = 1

r>m

LBHI

18 22

Unsigned

r<m

LBLO/LBCS

18 25

C = 1

≥m

LBHS/LBCC

18 24

Unsigned

Carry

LBCS

18 25

C = 1

No Carry

LBCC

18 24

Simple

Negative

LBMI

18 2B

N = 1

Plus

LBPL

18 2A

Simple

Overflow

LBVS

18 29

V = 1

No Overflow

LBVC

18 28

Simple

r=0

LBEQ

18 27

Z = 1

≠0

LBNE

18 26

Simple

Always

LBRA

18 20

—

Never

LBRN

18 21

Unconditional

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