HCS12 datasheet(158/452 Pages) FREESCALE

158 / 452 page

S12CPUV2 Reference Manual, Rev. 4.0

158

Freescale Semiconductor

Operation:

(SP) – (M : M + 1)

Description:

Compares the content of the SP with a 16-bit value at the address specified,

and sets the condition codes accordingly. The compare is accomplished

internally by doing a 16-bit subtract of (M : M + 1) from the SP without

modifying either the SP or (M : M + 1).

CPS

Compare Stack Pointer

CPS

CCR Details:

HIN

––––

∆∆∆∆

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

Z: Set if result is $0000; cleared otherwise

V: S15

• M15 • R15 + S15 • M15 • R15

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

cleared otherwise

C: S15

• M15 + M15 • R15 + R15 • S15

Set if the absolute value of the content of memory is larger than the

absolute value of the SP; cleared otherwise

Source Form

Address

Mode

Object Code

Access Detail

HCS12

M68HC12

CPS #opr16i

CPS opr8a

CPS opr16a

CPS oprx0_xysp

CPS oprx9,xysp

CPS oprx16,xysp

CPS [D,xysp]

CPS [oprx16,xysp]

IMM

DIR

EXT

IDX

IDX1

IDX2

[D,IDX]

[IDX2]

8F jj kk

9F dd

BF hh ll

AF xb

AF xb ff

AF xb ee ff

AF xb

AF xb ee ff

RPf

RPO

RPf

RPO

fRPP

fIfRPf

fIPRPf

RfP

ROP

RfP

RPO

fRPP

fIfRfP

fIPRfP

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