"#ifdef, #define #endif ... are included in application note, my assembler cannot recognize them?"

Are you sure you're not still confusing "Assembler" and "Compiler"?

#define etc originate with the 'C' preprocessor; some Assemblers have "adopted" them, but apparently not yours.

I concur with the others: If the code you're trying to use was written for a specific assembler, and that assembler is FREE - why not use it?!!

If you really have to, you can worry about porting it to another assembler once you've got it working in its intended assembler!