HCS12 datasheet(287/452 Pages) FREESCALE

287 / 452 page

Glossary

S12CPUV2 Reference Manual, Rev. 4.0

Freescale Semiconductor

287

Operation:

(B) – (M)

⇒ B

Description:

Subtracts the content of memory location M from the content of accumulator

B and places the result in B. For subtraction instructions, the C status bit

represents a borrow.

SUBB

Subtract B

SUBB

CCR Details:

HIN

––––

∆∆∆∆

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 a two’s complement overflow resulted from the operation;

cleared otherwise

C: B7

• M7 + M7 • R7 + R7 • B7

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

the accumulator; cleared otherwise

Source Form

Address

Mode

Object Code

Access Detail

HCS12

M68HC12

SUBB #opr8i

SUBB opr8a

SUBB opr16a

SUBB oprx0_xysp

SUBB oprx9,xysp

SUBB oprx16,xysp

SUBB [D,xysp]

SUBB [oprx16,xysp]

IMM

DIR

EXT

IDX

IDX1

IDX2

[D,IDX]

[IDX2]

C0 ii

D0 dd

F0 hh ll

E0 xb

E0 xb ff

E0 xb ee ff

E0 xb

E0 xb ee ff

rPf

rPO

rPf

rPO

frPP

fIfrPf

fIPrPf

rfP

rOP

rfP

rPO

frPP

fIfrfP

fIPrfP

HCS12 Datasheet(PDF) 287 Page - Freescale Semiconductor, Inc

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