diff --git a/src/cpu/core_dyn_x86.cpp b/src/cpu/core_dyn_x86.cpp
index 50d78e8d..27aef301 100644
--- a/src/cpu/core_dyn_x86.cpp
+++ b/src/cpu/core_dyn_x86.cpp
@@ -27,6 +27,11 @@
 #include <stddef.h>
 #include <stdlib.h>
 
+#if defined (_MSC_VER)
+#include <windows.h>
+#include <winbase.h>
+#endif
+
 #if (C_HAVE_MPROTECT)
 #include <sys/mman.h>
 
@@ -45,7 +50,7 @@
 #include "inout.h"
 #include "fpu.h"
 
-#define CACHE_MAXSIZE	(4096*2)
+#define CACHE_MAXSIZE	(4096*3)
 #define CACHE_TOTAL		(1024*1024*8)
 #define CACHE_PAGES		(512)
 #define CACHE_BLOCKS	(64*1024)
diff --git a/src/cpu/core_dyn_x86/cache.h b/src/cpu/core_dyn_x86/cache.h
index a5f10b7b..8f51e880 100644
--- a/src/cpu/core_dyn_x86/cache.h
+++ b/src/cpu/core_dyn_x86/cache.h
@@ -457,8 +457,15 @@ static void cache_init(bool enable) {
 			}
 		}
 		if (cache_code_start_ptr==NULL) {
+#if defined (_MSC_VER)
+			cache_code_start_ptr=(Bit8u*)VirtualAlloc(0,CACHE_TOTAL+CACHE_MAXSIZE+PAGESIZE_TEMP-1+PAGESIZE_TEMP,
+				MEM_COMMIT,PAGE_EXECUTE_READWRITE);
+			if (!cache_code_start_ptr)
+				cache_code_start_ptr=(Bit8u*)malloc(CACHE_TOTAL+CACHE_MAXSIZE+PAGESIZE_TEMP-1+PAGESIZE_TEMP);
+#else
 			cache_code_start_ptr=(Bit8u*)malloc(CACHE_TOTAL+CACHE_MAXSIZE+PAGESIZE_TEMP-1+PAGESIZE_TEMP);
-			if(!cache_code_start_ptr) E_Exit("Allocating dynamic cache failed");
+#endif
+			if(!cache_code_start_ptr) E_Exit("Allocating dynamic core cache memory failed");
 
 			cache_code=(Bit8u*)(((int)cache_code_start_ptr + PAGESIZE_TEMP-1) & ~(PAGESIZE_TEMP-1)); //MEM LEAK. store old pointer if you want to free it.
 
@@ -510,6 +517,8 @@ static void cache_close(void) {
 		cache_blocks = NULL;
 	}
 	if (cache_code_start_ptr != NULL) {
+		### care: under windows VirtualFree() has to be used if
+		###       VirtualAlloc was used for memory allocation
 		free(cache_code_start_ptr);
 		cache_code_start_ptr = NULL;
 	}
diff --git a/src/cpu/core_dynrec.cpp b/src/cpu/core_dynrec.cpp
index e73b8b2b..0cc2cbf6 100644
--- a/src/cpu/core_dynrec.cpp
+++ b/src/cpu/core_dynrec.cpp
@@ -27,6 +27,11 @@
 #include <stddef.h>
 #include <stdlib.h>
 
+#if defined (_MSC_VER)
+#include <windows.h>
+#include <winbase.h>
+#endif
+
 #if (C_HAVE_MPROTECT)
 #include <sys/mman.h>
 
diff --git a/src/cpu/core_dynrec/cache.h b/src/cpu/core_dynrec/cache.h
index f0517150..6fdc537b 100644
--- a/src/cpu/core_dynrec/cache.h
+++ b/src/cpu/core_dynrec/cache.h
@@ -562,7 +562,14 @@ static void cache_init(bool enable) {
 		}
 		if (cache_code_start_ptr==NULL) {
 			// allocate the code cache memory
+#if defined (_MSC_VER)
+			cache_code_start_ptr=(Bit8u*)VirtualAlloc(0,CACHE_TOTAL+CACHE_MAXSIZE+PAGESIZE_TEMP-1+PAGESIZE_TEMP,
+				MEM_COMMIT,PAGE_EXECUTE_READWRITE);
+			if (!cache_code_start_ptr)
+				cache_code_start_ptr=(Bit8u*)malloc(CACHE_TOTAL+CACHE_MAXSIZE+PAGESIZE_TEMP-1+PAGESIZE_TEMP);
+#else
 			cache_code_start_ptr=(Bit8u*)malloc(CACHE_TOTAL+CACHE_MAXSIZE+PAGESIZE_TEMP-1+PAGESIZE_TEMP);
+#endif
 			if(!cache_code_start_ptr) E_Exit("Allocating dynamic cache failed");
 
 			// align the cache at a page boundary
@@ -624,6 +631,8 @@ static void cache_close(void) {
 		cache_blocks = NULL;
 	}
 	if (cache_code_start_ptr != NULL) {
+		### care: under windows VirtualFree() has to be used if
+		###       VirtualAlloc was used for memory allocation
 		free(cache_code_start_ptr);
 		cache_code_start_ptr = NULL;
 	}