Index: block.c
===================================================================
--- block.c	(revision 20820)
+++ block.c	(working copy)
@@ -154,7 +154,6 @@
   int i;
   long b_size[2];
   LOOKUP_TNC *iramposw;
-  ogg_int32_t *internal_pcm=NULL;
   
   codec_setup_info *ci=(codec_setup_info *)vi->codec_setup;
   private_state *b=NULL;
@@ -213,13 +212,13 @@
   _pcmp[1]=NULL;
   _pcmbp[0]=NULL;
   _pcmbp[1]=NULL;
-  
-  if(NULL != (internal_pcm = iram_malloc(vi->channels*v->pcm_storage*sizeof(ogg_int32_t))))
+  v->iram_double_pcm=NULL;
+  if(NULL != (v->iram_double_pcm = iram_malloc(vi->channels*v->pcm_storage*sizeof(ogg_int32_t))))
   {
     /* one-time initialisation at codec start or on switch from
        blocksizes greater than IRAM_PCM_END to sizes that fit */
     for(i=0;i<vi->channels;i++)
-      v->pcm[i]=&internal_pcm[i*v->pcm_storage];
+      v->pcm[i]=&v->iram_double_pcm[i*v->pcm_storage];
     iram_pcm_doublebuffer = true;
   }
   else
@@ -250,6 +249,7 @@
 int vorbis_synthesis_restart(vorbis_dsp_state *v){
   vorbis_info *vi=v->vi;
   codec_setup_info *ci;
+  int i;
 
   if(!v->backend_state)return -1;
   if(!vi)return -1;
@@ -267,6 +267,10 @@
   /* indicate to synthesis code that buffer pointers no longer valid
      (if we're using double pcm buffer) and will need to reset them */
   v->reset_pcmb = true;
+  if(iram_pcm_doublebuffer){
+  	for(i=0;i<vi->channels;i++)
+      v->pcm[i]=&v->iram_double_pcm[i*v->pcm_storage];
+  }
 
   return(0);
 }
Index: ivorbiscodec.h
===================================================================
--- ivorbiscodec.h	(revision 20820)
+++ ivorbiscodec.h	(working copy)
@@ -78,6 +78,7 @@
   void       *backend_state;
   
   ogg_int32_t *iram_pcm;  /* IRAM PCM buffer */
+  ogg_int32_t *iram_double_pcm;  /* IRAM PCM 2nd buffer */
   int iram_pcm_storage;   /* size of IRAM PCM buffer */
   bool reset_pcmb;
 } vorbis_dsp_state;