PC912XDP512F0CFVR datasheet(249/1348 Pages) FREESCALE

No. de pieza	PC912XDP512F0CFVR

Descripción Electrónicos	HCS12X Microcontrollers

PDF	1348 Pages

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Fabricante Electrónico	FREESCALE [Freescale Semiconductor, Inc]

Página de inicio	http://www.freescale.com

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249 / 1348 page

Chapter 6 XGATE (S12XGATEV2)

MC9S12XDP512 Data Sheet, Rev. 2.21

Freescale Semiconductor

249

Operation

RS2 – RS1

⇒ NONE (translates to SUB R0, RS1, RS2)

RD – IMM16

⇒ NONE (translates to CMPL RD, #IMM16[7:0]; CPCH RD, #IMM16[15:8])

Subtracts two 16 bit values and discards the result.

CCR Effects

Code and CPU Cycles

CMP

Compare

CMP

∆∆∆∆

Set if bit 15 of the result is set; cleared otherwise.

Set if the result is $0000; cleared otherwise.

Set if a two´s complement overﬂow resulted from the operation; cleared otherwise.

RS1[15] & RS2[15] & result[15] | RS1[15] & RS2[15] & result[15]

RD[15] & IMM16[15] & result[15] | RD[15] & IMM16[15] & result[15]

Set if there is a carry from the bit 15 of the result; cleared otherwise.

RS1[15] & RS2[15] | RS1[15] & result[15] | RS2[15] & result[15]

RD[15] & IMM16[15] | RD[15] & result[15] | IMM16[15] & result[15]

Source Form

Address

Mode

Machine Code

Cycles

CMP RS1, RS2

TRI

RS1

RS2

CMP RS, #IMM16

IMM8

IMM16[7:0]

IMM8

IMM16[15:8]

PC912XDP512F0CFVR Datasheet(PDF) 249 Page - Freescale Semiconductor, Inc