diff --git a/docs/DSP/free_dsp_rom/dsp_rom.ds b/docs/DSP/free_dsp_rom/dsp_rom.ds
diff --git a/docs/DSP/free_dsp_rom/dsp_rom_readme.txt b/docs/DSP/free_dsp_rom/dsp_rom_readme.txt
@@ -0,0 +1,28 @@
+Legal GC/WII DSP IROM replacement (v0.2)
+-------------------------------------------------------
+
+- coef: crafted to use a linear interpolation when resampling (instead of
+  having a real 4 TAP FIR filter)
+- irom: added all the mixing functions, some functions not used by AX/Zelda are
+  still missing
+
+Should work with all AX, AXWii and Zelda UCode games. Card/IPL/GBA are most
+likely still broken with it and require a real DSP ROM.
+
+delroth
+16/march/2013
+
+Legal GC/WII DSP IROM replacement (v0.1)
+-------------------------------------------------------
+- coef: fake (zeroes)
+- irom: reversed and rewrote ucode loading/reset part, everything else is missing
+
+Good enough for Zelda ucode games (and maybe some AX too):
+- WII: SMG 1/2, Pikmin 1/2 WII, Zelda TP WII, Donkey Kong Jungle Beat (WII), ... 
+- GC: Mario Kart Double Dash, Luigi Mansion, Super Mario Sunshine, Pikmin 1/2, Zelda WW, Zelda TP, ...
+
+Basically... If game is not using coef and irom mixing functions it will work ok.
+Dolphin emulator will report wrong CRCs, but it will work ok with mentioned games.
+
+LM
+31/july/2011