Datasheet

Instruction Set Description

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4.6.3.1 ADCX

* ADCX.A Add carry to destination address-word

* ADCX.[W] Add carry to destination word

* ADCX.B Add carry to destination byte

ADCX.A dst

Syntax

ADCX dst or ADCX.W dst

ADCX.B dst

Operation dst + C → dst

ADDCX.A #0,dst

Emulation

ADDCX #0,dst

ADDCX.B #0,dst

Description The carry bit (C) is added to the destination operand. The previous contents of the

destination are lost.

Status Bits N: Set if result is negative (MSB = 1), reset if positive (MSB = 0)

Z: Set if result is zero, reset otherwise

C: Set if there is a carry from the MSB of the result, reset otherwise

V: Set if the result of two positive operands is negative, or if the result of two negative

numbers is positive, reset otherwise

Mode Bits OSCOFF, CPUOFF, and GIE are not affected.

Example The 40-bit counter, pointed to by R12 and R13, is incremented.

INCX.A @R12 ; Increment lower 20 bits

ADCX.A @R13 ; Add carry to upper 20 bits

216

CPUX SLAU144J–December 2004–Revised July 2013

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