diff --git a/examples/app_par_decimator/src/decimator_subtask.c b/examples/app_par_decimator/src/decimator_subtask.c
index dba6c5ef..efb2061c 100644
--- a/examples/app_par_decimator/src/decimator_subtask.c
+++ b/examples/app_par_decimator/src/decimator_subtask.c
@@ -116,6 +116,8 @@ void decimator_subtask(
 static inline
 void shift_buffer(uint32_t* buff)
 {
+  #if defined(__xcore__)
   uint32_t* src = &buff[-1];
   asm volatile("vldd %0[0]; vstd %1[0];" :: "r"(src), "r"(buff) : "memory" );
+  #endif // __xcore__
 }
diff --git a/lib_mic_array/api/mic_array/cpp/Decimator.hpp b/lib_mic_array/api/mic_array/cpp/Decimator.hpp
index f1263fa7..06d0852c 100644
--- a/lib_mic_array/api/mic_array/cpp/Decimator.hpp
+++ b/lib_mic_array/api/mic_array/cpp/Decimator.hpp
@@ -178,8 +178,8 @@ void mic_array::TwoStageDecimator<MIC_COUNT>
 static inline
 void mic_array::shift_buffer(uint32_t* buff)
 {
+  #if defined(__xcore__)
   uint32_t* src = &buff[-1];
   asm volatile("vldd %0[0]; vstd %1[0];" :: "r"(src), "r"(buff) : "memory" );
+  #endif // __xcore__
 }
-
-
diff --git a/lib_mic_array/api/mic_array/cpp/PdmRx.hpp b/lib_mic_array/api/mic_array/cpp/PdmRx.hpp
index f8bfa989..c8abee1a 100644
--- a/lib_mic_array/api/mic_array/cpp/PdmRx.hpp
+++ b/lib_mic_array/api/mic_array/cpp/PdmRx.hpp
@@ -155,6 +155,7 @@ extern "C" {
   void enable_pdm_rx_isr(
       const port_t p_pdm_mics)
   {
+    #if defined(__xcore__)
     asm volatile(
       "setc res[%0], %1       \n"
       "ldap r11, pdm_rx_isr   \n"
@@ -163,6 +164,7 @@ extern "C" {
         :
         : "r"(p_pdm_mics), "r"(XS1_SETC_IE_MODE_INTERRUPT)
         : "r11" );
+    #endif // __xcore__
   }
 
 }
diff --git a/lib_mic_array/src/deinterleave16.S b/lib_mic_array/src/deinterleave16.S
index d6243e94..efebb43e 100644
--- a/lib_mic_array/src/deinterleave16.S
+++ b/lib_mic_array/src/deinterleave16.S
@@ -1,6 +1,8 @@
 // Copyright 2023-2026 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 
+#if defined(__XS3A__)
+
 #define NSTACKWORDS   6
 
 .text
@@ -138,4 +140,6 @@ deinterleave16:
 .cc_bottom deinterleave16.func
 
 
-.size deinterleave16, .L_end - deinterleave16
\ No newline at end of file
+.size deinterleave16, .L_end - deinterleave16
+
+#endif // __XS3A__
diff --git a/lib_mic_array/src/deinterleave2.S b/lib_mic_array/src/deinterleave2.S
index 1963ca96..6c08f352 100644
--- a/lib_mic_array/src/deinterleave2.S
+++ b/lib_mic_array/src/deinterleave2.S
@@ -1,6 +1,8 @@
 // Copyright 2022-2026 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 
+#if defined(__XS3A__)
+
 #define NSTACKWORDS   0
 
 .text
@@ -36,4 +38,6 @@ deinterleave2:
 .cc_bottom deinterleave2.func
 
 
-.size deinterleave2, .L_end - deinterleave2
\ No newline at end of file
+.size deinterleave2, .L_end - deinterleave2
+
+#endif // __XS3A__
diff --git a/lib_mic_array/src/deinterleave4.S b/lib_mic_array/src/deinterleave4.S
index 9c36dc20..0d383e9c 100644
--- a/lib_mic_array/src/deinterleave4.S
+++ b/lib_mic_array/src/deinterleave4.S
@@ -1,6 +1,8 @@
 // Copyright 2022-2026 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 
+#if defined(__XS3A__)
+
 #define NSTACKWORDS   2
 
 .text
@@ -80,4 +82,6 @@ deinterleave4:
 .cc_bottom deinterleave4.func
 
 
-.size deinterleave4, .L_end - deinterleave4
\ No newline at end of file
+.size deinterleave4, .L_end - deinterleave4
+
+#endif // __XS3A__
diff --git a/lib_mic_array/src/deinterleave8.S b/lib_mic_array/src/deinterleave8.S
index 88f198cf..c3d6a955 100644
--- a/lib_mic_array/src/deinterleave8.S
+++ b/lib_mic_array/src/deinterleave8.S
@@ -1,6 +1,8 @@
 // Copyright 2022-2026 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 
+#if defined(__XS3A__)
+
 #define NSTACKWORDS   6
 
 .text
@@ -110,4 +112,6 @@ deinterleave8:
 .cc_bottom deinterleave8.func
 
 
-.size deinterleave8, .L_end - deinterleave8
\ No newline at end of file
+.size deinterleave8, .L_end - deinterleave8
+
+#endif // __XS3A__
diff --git a/lib_mic_array/src/fir_1x16_bit.S b/lib_mic_array/src/fir_1x16_bit.S
index c4fa1394..576d4ef9 100644
--- a/lib_mic_array/src/fir_1x16_bit.S
+++ b/lib_mic_array/src/fir_1x16_bit.S
@@ -71,4 +71,4 @@ macc_coeffs:
     .short 0x7fff, 0x4000, 0x2000, 0x1000, 0x0800, 0x0400, 0x0200, 0x0100, 0x0080, 0x0040, 0x0020, 0x0010, 0x0008, 0x0004, 0x0002, 0x0001
     .cc_bottom fir_1x16_bit.func
 
-#endif
\ No newline at end of file
+#endif // __XS3A__
diff --git a/lib_mic_array/src/mic_array_setup.c b/lib_mic_array/src/mic_array_setup.c
index 44ac620a..6ef8d85a 100644
--- a/lib_mic_array/src/mic_array_setup.c
+++ b/lib_mic_array/src/mic_array_setup.c
@@ -48,9 +48,11 @@ void mic_array_resources_configure(
 static inline
 void mic_array_inpw8(const port_t p_pdm_mics)
 {
+  #if defined(__xcore__)
   uint32_t tmp;
   asm volatile("inpw %0, res[%1], 8" : "=r"(tmp)
                     : "r" (p_pdm_mics));
+  #endif // __xcore__
 }
 
 void mic_array_pdm_clock_start(
diff --git a/lib_mic_array/src/mic_array_task.cpp b/lib_mic_array/src/mic_array_task.cpp
index 43f8aad2..fe5c063f 100644
--- a/lib_mic_array/src/mic_array_task.cpp
+++ b/lib_mic_array/src/mic_array_task.cpp
@@ -104,7 +104,11 @@ void default_ma_task_start_decimator_3stg(TMicArray_3stg_decimator& mics, chanen
   mics.ThreadEntry();
 }
 
+#if defined(__xcore__)
 #define CLRSR(c)                asm volatile("clrsr %0" : : "n"(c));
+#else
+#define CLRSR(c)                ((void)0)
+#endif
 #define CLEAR_KEDI()            CLRSR(XS1_SR_KEDI_MASK)
 
 template <typename TMics>