LX51 vs BL51, AX51 vs A51https://devzone.nordicsemi.com/f/nordic-q-a/32836/lx51-vs-bl51-ax51-vs-a51Hi, I just noticed that my PTX and PRX projects use different assemblers and linkers -- not sure why. I got the sample projects from Nordic. What&#39;s the difference between LX51 vs BL51, AX51 vs A51? Which should I use? Best, Maheshen-USTelligent Community 13Thu, 11 May 2017 19:17:34 GMTRE: LX51 vs BL51, AX51 vs A51https://devzone.nordicsemi.com/thread/126222?ContentTypeID=1Thu, 11 May 2017 19:17:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ce63649b-3ebc-4aac-83db-d67dd3f6061emr_creosotethanks!<div style="clear:both;"></div>RE: LX51 vs BL51, AX51 vs A51https://devzone.nordicsemi.com/thread/126221?ContentTypeID=1Thu, 11 May 2017 07:17:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:eb76f150-02e9-4c5a-8cf2-d1e929f96298H&#229;kon Alseth<p>Hi Mahesh,</p> <p>&nbsp;</p> <p>BL51 is the basic linker for 8051 cores, while LX51 is the enhanced linker.</p> <p>The LX51 allows you do to drop unused functions for instance, by adding &quot;REMOVEUNUSED&quot; to the LX51 MISC option.</p> <p>You can read more about it here:</p> <p><a href="http://www.keil.com/c51/lx51.asp" target="_blank">http://www.keil.com/c51/lx51.asp</a></p> <p>&nbsp;</p> <p>AX51 vs. A51 is the same approach as above, only for the assembler part.</p> <p>&nbsp;</p> <p>Cheers,</p> <p>Håkon</p><div style="clear:both;"></div>