https://devzone.nordicsemi.com/f/nordic-q-a/4572/nrf51822-using-qfaa-256kb-code-for-qfab-128kbHi there, I am using Eclipse and GCC (codesourcery) as development tools. In the gcc makefile, once provided by Nordic with the &quot;button_radio_example&quot; are two lines, specifying the target chip: TARGET_CHIP := NRF51822_QFAA_CA and DEVICE_VARIANTen-USTelligent Community 13Tue, 25 Nov 2014 13:13:20 GMThttps://devzone.nordicsemi.com/thread/16199?ContentTypeID=1Tue, 25 Nov 2014 13:13:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8ed3e7e7-d58e-4362-ad98-e5b6edbef367Carl<p>Hi Vidar,</p> <p>Thanks a lot!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/16198?ContentTypeID=1Tue, 25 Nov 2014 12:44:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:aacaf05f-16c2-441a-8cb1-ac7d7ebcbb55Vidar Berg<p>Setting the correct device variant will ensure that the correct linker script is used by the linker. If you have a look at the Makefile.common line ~15 you&#39;ll see that which linker script is included is based on the DEVICE_VARIANT,USE_SOFTDEVICE, and DEVICESERIES variables.</p> <p>The only linker difference between xxaa and xxab is the flash size. So if you use the linker for xxaa on the xxab variant you will not get a warning if the 128K limit is exceeded.</p><div style="clear:both;"></div>