HCS12 datasheet(418/452 Pages) FREESCALE

418 / 452 page

S12CPUV2 Reference Manual, Rev. 4.0

418

Freescale Semiconductor

Table B-4. New M68HC12 Instructions (Sheet 1 of 2)

Mnemonic

Addressing Modes

Brief Functional Description

ANDCC

Immediate

AND CCR with mask (replaces CLC, CLI, and CLV)

BCLR

Extended

Bit(s) clear (added extended mode)

BGND

Inherent

Enter background debug mode, if enabled

BRCLR

Extended

Branch if bit(s) clear (added extended mode)

BRSET

Extended

Branch if bit(s) set (added extended mode)

BSET

Extended

Bit(s) set (added extended mode)

CALL

Extended, indexed

Similar to JSR except also stacks PPAGE value; with RTC

instruction, allows easy access to >64-Kbyte space

CPS

Immediate, direct,

extended, and indexed

Compare stack pointer

DBNE

Relative

Decrement and branch if equal to zero (looping primitive)

DBEQ

Relative

Decrement and branch if not equal to zero (looping primitive)

EDIV

Inherent

Extended divide Y:D/X = Y(Q) and D(R) (unsigned)

EDIVS

Inherent

Extended divide Y:D/X = Y(Q) and D(R) (signed)

EMACS

Special

Multiply and accumulate 16

× 16 ⇒ 32 (signed)

EMAXD

Indexed

Maximum of two unsigned 16-bit values

EMAXM

Indexed

Maximum of two unsigned 16-bit values

EMIND

Indexed

Minimum of two unsigned 16-bit values

EMINM

Indexed

Minimum of two unsigned 16-bit values

EMUL

Special

Extended multiply 16

× 16 ⇒ 32; M(idx) ∗ D ⇒ Y:D

EMULS

Special

Extended multiply 16

× 16 ⇒ 32 (signed); M(idx) ∗ D ⇒ Y:D

ETBL

Special

Table lookup and interpolate (16-bit entries)

EXG

Inherent

Exchange register contents

IBEQ

Relative

Increment and branch if equal to zero (looping primitive)

IBNE

Relative

Increment and branch if not equal to zero (looping primitive)

IDIVS

Inherent

Signed integer divide D/X

⇒ X(Q) and D(R) (signed)

LBCC

Relative

Long branch if carry clear (same as LBHS)

LBCS

Relative

Long branch if carry set (same as LBLO)

LBEQ

Relative

Long branch if equal (Z=1)

LBGE

Relative

Long branch if greater than or equal to zero

LBGT

Relative

Long branch if greater than zero

LBHI

Relative

Long branch if higher

LBHS

Relative

Long branch if higher or same (same as LBCC)

LBLE

Relative

Long branch if less than or equal to zero

LBLO

Relative

Long branch if lower (same as LBCS)

LBLS

Relative

Long branch if lower or same

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