Texas Instruments MSP430x1xx User Manual

Page 386

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Instruction Set Overview

B-36

JL

Jump if less

Syntax

JL

label

Operation

If (N .XOR. V) = 1 then jump to label: PC + 2

×

offset –> PC

If (N .XOR. V) = 0 then execute following instruction

Description

The status register negative bit (N) and overflow bit (V) are tested. If only one
is set, the 10-bit signed offset contained in the instruction LSBs is added to the
program counter. If both N and V are set or reset, the instruction following the
jump is executed.

This allows comparison of signed integers.

Status Bits

Status bits are not affected.

Example

When the content of R6 is less than the memory pointed to by R7, the program
continues at label EDE.

CMP

@R7,R6

; R6 < (R7)?, compare on signed numbers

JL

EDE

; Yes, R6 < (R7)

......

; No, proceed

......
......

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