The big X13mod, works on Radeons 5xxx-6xxx. Its obvious that this is using "hacked" x11mod from Girino's exe (with opencl file >270KB)
example cmd line for 5850
sgminer -k x13mod -o stratum+tcp://boost.suprnova.cc:3311 --auto-fan -w 256 -g 1 -I 18 --thread-concurrency 7200 --lookup-gap 2
Works with Cat 13.12, works with 14.4 too. tested on 5850, 6970 and 5750
x13mod.cl - 281KB
https://dl.dropboxusercontent.com/u/88276654/x13mod.7zSorry but can't remember how I found it, was posted somewhere in a forum - with complete sgminer build, made 28-05 early in the morning

PS:
https://dl.dropboxusercontent.com/u/88276654/sgminerx11.zip thats the file I downloaded, the x13mod kernel inside is NOT compatible with later sgminer builds, so ...
Hi,I run it with my 5750,kernel error.