Hi, I'm doing a comparison between BL51 and Lx51 to determine the code space savings- I'm a bit suprised to see that for the same project, Lx51 yields a code reduction of only 0.6%- I've enabled the AJMP/ACALL setting, and altered the optimisation levels (speaking of which, under Lx51 raising the optimsation levels from 9 to the 'new' levels of 10/11 actually increases the code size) Does anyone have any similar experience of this phenomena- or any suggestion as to what else I should try to get the touted 10-15% reductions available using LX51? I'm only using the 'BANKAREA' LX51 controls... Thanks David