获取PHASE ERROR，如何在MPLAB X IDE中将包含文件指定为汇编代码？

我把下面的示例.ASM作为项目中的源文件之一，但是我在汇编指令（NOP）上得到了“相位错误”。3个NOP指令被标记为错误：（840）相位错误，什么是相位误差和/或我可以在哪里查找错误解释？-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------预文件，它似乎已经失去了缩进和空格。我不确定A.Primefile应该是什么样子，所以我首先在记事本++中编辑了.ASM文件，以将所有标签隐藏到空格中，但这无济于事。在这次运行中，我改变了NOPS到所有的上限，但这无济于事。这里是预文件：结束



      以下为原文

    I've added the following Example.asm as one of the source files in the project but I'm getting "phase error" on the assembly instructions (nop).
PROG    CODE        ; Set the start of code from 16f84a.lkr scriptmain                ; Min code entry called from Example2.asm
    global  main    ; Define as global so can be used in Example2.asm
    nop             ; Main does nothing -- Put your code here
    goto    main    ; Our sample "main" is just an infinite loopservice             ; Interrupt routine, called from Example2.asm
    global service  ; Define as global so can be used in Example2.asm
    nop             ; Interrupt code would go here
    nop
    retfie
    endThe 3 nop instructions are tagged as error: (840) phase error
What is a phase error and/or where can I look up error explanations?
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If I look at the Example.pre file it appears to have lost indenting and spaces.  I'm not sure what a .pre file is supposed to look like so at first I edited the .ASM file in Notepad++ to covert all tabs to spaces but that didn't help.  In this run I changed the nops to all CAPS but that didn't help.  Here is the .pre file:  
# 1 "Example.asm"
PROG CODE ; Set the start of code from 16f84a.lkr scriptmain ; Min code entry called from Example2.asm
global main ; Define as global so can be used in Example2.asm
NOP ; Main does nothing -- Put your code here
goto main ; Our sample "main" is just an infinite loopservice ; Interrupt routine, called from Example2.asm
global service ; Define as global so can be used in Example2.asm
NOP ; Interrupt code would go here
NOP
retfie
end