diff --git a/lib_xua/src/core/mixer/fastmix.S b/lib_xua/src/core/mixer/fastmix.S
new file mode 100644
index 00000000..9ded5fb4
--- /dev/null
+++ b/lib_xua/src/core/mixer/fastmix.S
@@ -0,0 +1,227 @@
+//#include "devicedefines.h"
+
+#define MAX_MIX_COUNT 8
+#define MIX_INPUTS 18
+
+
+#if defined(__XS2A__)
+
+#define DOMIX_TOP(i) \
+.cc_top doMix##i.function,doMix##i; \
+          .align    4 ;\
+.globl doMix##i ;\
+.type doMix##i, @function ;\
+.globl doMix##i##.nstackwords ;\
+.globl doMix##i##.maxthreads ; \
+.globl doMix##i##.maxtimers ; \
+.globl doMix##i##.maxchanends ; \
+.globl doMix##i##.maxsync ;\
+.linkset doMix##i##.locnoside, 1; \
+.linkset doMix##i##.locnochandec, 1;\
+.linkset doMix##i##.nstackwords, 0 ;\
+.linkset doMix##i##.maxchanends, 0 ;\
+.linkset doMix##i##.maxtimers, 0 ;\
+.linkset doMix##i##.maxthreads, 1; \
+doMix##i##: ;\
+          ENTSP_lu6 0; \
+          set       cp, r0; \
+          set       dp, r1; \
+          lsub      r0, r1, r0, r0, r0;\
+          .label_##i##:
+
+#define DOMIX_BOT(i) \
+          ldap      r11, _dp; \
+          set       dp, r11;\
+          ldap      r11, _cp;\
+          set       cp, r11;\
+\
+          mov       r0, r1;\
+          ldc       r2, 0x19;\
+          sext      r0, r2;\
+          eq        r0, r0, r1;\
+          bf        r0, .L20; \
+\
+          shl       r0, r1, 0x7;\
+          retsp     0x0;\
+\
+\
+.size doMix##i, .-doMix##i; \
+.cc_bottom doMix##i##.function;
+
+#else
+
+
+#define DOMIX_TOP(i) \
+.cc_top doMix##i.function,doMix##i; \
+          .align    4 ;\
+.globl doMix##i ;\
+.type doMix##i, @function ;\
+.globl doMix##i##.nstackwords ;\
+.globl doMix##i##.maxthreads ; \
+.globl doMix##i##.maxtimers ; \
+.globl doMix##i##.maxchanends ; \
+.globl doMix##i##.maxsync ;\
+.linkset doMix##i##.locnoside, 1; \
+.linkset doMix##i##.locnochandec, 1;\
+.linkset doMix##i##.nstackwords, 0 ;\
+.linkset doMix##i##.maxchanends, 0 ;\
+.linkset doMix##i##.maxtimers, 0 ;\
+.linkset doMix##i##.maxthreads, 1; \
+doMix##i##: ;\
+          set       cp, r0; \
+          set       dp, r1; \
+          lsub      r0, r1, r0, r0, r0;\
+          .label_##i##:
+
+#define DOMIX_BOT(i) \
+         ldap      r11, _dp; \
+          set       dp, r11;\
+          ldap      r11, _cp;\
+          set       cp, r11;\
+\
+          mov       r0, r1;\
+          ldc       r2, 0x19;\
+          sext      r0, r2;\
+          eq        r0, r0, r1;\
+          bf        r0, .L20; \
+\
+          shl       r0, r1, 0x7;\
+          retsp     0x0;\
+\
+\
+.size doMix##i, .-doMix##i; \
+.cc_bottom doMix##i##.function;
+
+#endif
+
+#define N MIX_INPUTS
+#define BODY(i) \
+          ldw       r2,cp[i]; \
+          ldw       r11, dp[i];  \
+          maccs     r1, r0, r2, r11;
+
+
+.text
+
+.L20:\
+          lss       r0, r1, r3;\
+          bt        r0, .L16; \
+          ldw       r0, cp[.LC0];\
+          retsp     0x0; \
+.L16:\
+          ldw       r0, cp[.LC1];\
+          retsp     0x0; \
+
+
+
+
+#if(MAX_MIX_COUNT > 0)
+DOMIX_TOP(0)
+#include "repeat.h"
+DOMIX_BOT(0)
+#endif
+
+
+#if(MAX_MIX_COUNT > 1)
+DOMIX_TOP(1)
+#include "repeat.h"
+DOMIX_BOT(1)
+#endif
+
+#if(MAX_MIX_COUNT > 2)
+DOMIX_TOP(2)
+#include "repeat.h"
+DOMIX_BOT(2)
+#endif
+
+#if(MAX_MIX_COUNT > 3)
+DOMIX_TOP(3)
+#include "repeat.h"
+DOMIX_BOT(3)
+#endif
+
+#if(MAX_MIX_COUNT > 4)
+DOMIX_TOP(4)
+#include "repeat.h"
+DOMIX_BOT(4)
+#endif
+
+#if(MAX_MIX_COUNT > 5)
+DOMIX_TOP(5)
+#include "repeat.h"
+DOMIX_BOT(5)
+#endif
+
+#if(MAX_MIX_COUNT > 6)
+DOMIX_TOP(6)
+#include "repeat.h"
+DOMIX_BOT(6)
+#endif
+
+#if(MAX_MIX_COUNT > 7)
+DOMIX_TOP(7)
+#include "repeat.h"
+DOMIX_BOT(7)
+#endif
+
+#if(MAX_MIX_COUNT>8)
+#error MAX_MIX_COUNT>7
+#endif
+
+/* We need MIX_OUTPUT x setPtr functions */
+
+#undef N
+#undef BODY
+#define N MAX_MIX_COUNT
+.cc_top setPtr.function,setPtr;
+.align    4 ;
+.globl setPtr;
+.type setPtr, @function
+.globl setPtr.nstackwords;
+.globl setPtr.maxthreads;
+.globl setPtr.maxtimers;
+.globl setPtr.maxchanends;
+.globl setPtr.maxsync;
+.linkset setPtr.locnoside, 1;
+.linkset setPtr.locnochandec, 1;
+.linkset setPtr.nstackwords, 0;
+.linkset setPtr.maxchanends, 0;
+.linkset setPtr.maxtimers, 0;
+.linkset setPtr.maxthreads, 1;
+setPtr:
+  ENTSP_lu6 0
+  shl   r2, r2, 1
+.xtabranch  .label_0
+  bru   r2
+.syntax architectural
+#define BODY(i) \
+  LDAPF_u10  .label_##i; \
+  BRFU_u6 setPtr_go
+#include "repeat.h"
+.syntax default
+setPtr_go:
+  shl   r0, r0, 3;
+  ldc   r2, 0x80;
+  add   r1, r1, r2;
+  st8   r1, r11[r0];
+  retsp 0;
+.size setPtr, .-setPtr
+.cc_bottom setPtr.function
+
+          .section .cp.const4,     "acM", @progbits, 4
+.cc_top .LC0.data
+          .align    4
+.LC0:
+          .int      0x7fffff00
+.cc_bottom .LC0.data
+.cc_top .LC1.data
+          .align    4
+.LC1:
+          .int      0x80000000
+.cc_bottom .LC1.data
+
+#undef N
+#undef BODY
+
+
+