diff --git a/acinclude.m4 b/acinclude.m4
index 08653d83..7ea20f4f 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -349,62 +349,3 @@ AH_BOTTOM([#if C_HAS_BUILTIN_EXPECT
 #define GCC_UNLIKELY(x) (x)
 #define GCC_LIKELY(x) (x)
 #endif])
-
-AH_BOTTOM([
-typedef         double     Real64;
-
-#if SIZEOF_UNSIGNED_CHAR != 1
-#  error "sizeof (unsigned char) != 1"
-#else
-  typedef unsigned char Bit8u;
-  typedef   signed char Bit8s;
-#endif
-
-#if SIZEOF_UNSIGNED_SHORT != 2
-#  error "sizeof (unsigned short) != 2"
-#else
-  typedef unsigned short Bit16u;
-  typedef   signed short Bit16s;
-#endif
-
-#if SIZEOF_UNSIGNED_INT == 4
-  typedef unsigned int Bit32u;
-  typedef   signed int Bit32s;
-#define sBit32t
-#elif SIZEOF_UNSIGNED_LONG == 4
-  typedef unsigned long Bit32u;
-  typedef   signed long Bit32s;
-#define sBit32t "l"
-#else
-#  error "can't find sizeof(type) of 4 bytes!"
-#endif
-#define sBit32fs(a) sBit32t #a
-
-#if SIZEOF_UNSIGNED_LONG == 8
-  typedef unsigned long Bit64u;
-  typedef   signed long Bit64s;
-#define sBit64t "l"
-#elif SIZEOF_UNSIGNED_LONG_LONG == 8
-  typedef unsigned long long Bit64u;
-  typedef   signed long long Bit64s;
-#define sBit64t "ll"
-#else
-#  error "can't find data type of 8 bytes"
-#endif
-#define sBit64fs(a) sBit64t #a
-
-#if SIZEOF_INT_P == 4
-
-typedef Bit32u Bitu;
-typedef Bit32s Bits;
-#define sBitfs sBit32fs
-
-#else //SIZEOF_INT_P 
-
-typedef Bit64u Bitu;
-typedef Bit64s Bits;
-#define sBitfs sBit64fs
-
-#endif
-
-])
diff --git a/include/dosbox.h b/include/dosbox.h
index b5e091b9..6d6f6d74 100644
--- a/include/dosbox.h
+++ b/include/dosbox.h
@@ -21,6 +21,7 @@
 #define DOSBOX_DOSBOX_H
 
 #include "config.h"
+#include "types.h"
 
 GCC_ATTRIBUTE(noreturn) void E_Exit(const char * message,...) GCC_ATTRIBUTE( __format__(__printf__, 1, 2));
 
diff --git a/include/types.h b/include/types.h
new file mode 100644
index 00000000..b2f0ac64
--- /dev/null
+++ b/include/types.h
@@ -0,0 +1,42 @@
+/*
+ *  Copyright (C) 2019  The DOSBox Team
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#ifndef DOSBOX_TYPES_H
+#define DOSBOX_TYPES_H
+
+#include <cinttypes>
+#include <cstdint>
+
+using Bit8u  = uint8_t;
+using Bit16u = uint16_t;
+using Bit32u = uint32_t;
+using Bit64u = uint64_t;
+using Bitu   = uintptr_t;
+
+using Bit8s  = int8_t;
+using Bit16s = int16_t;
+using Bit32s = int32_t;
+using Bit64s = int64_t;
+using Bits   = intptr_t;
+
+using Real64 = double;
+
+// TODO: remove
+#define sBitfs(x) PRIuPTR
+
+#endif /* DOSBOX_TYPES_H */
diff --git a/src/platform/visualc/config.h b/src/platform/visualc/config.h
index 7593029b..5bb8d252 100644
--- a/src/platform/visualc/config.h
+++ b/src/platform/visualc/config.h
@@ -72,28 +72,3 @@
 #if defined(_MSC_VER) && (_MSC_VER >= 1400) 
 #pragma warning(disable : 4996) 
 #endif
-
-typedef double            Real64;
-/* The internal types */
-typedef unsigned char     Bit8u;
-typedef signed char       Bit8s;
-typedef unsigned short    Bit16u;
-typedef signed short      Bit16s;
-typedef unsigned int      Bit32u;
-typedef signed int        Bit32s;
-typedef unsigned __int64  Bit64u;
-typedef signed __int64    Bit64s;
-#define sBit32t
-#define sBit64t "I64"
-#define sBit32fs(a) sBit32t #a
-#define sBit64fs(a) sBit64t #a
-#ifdef _M_X64
-typedef Bit64u            Bitu;
-typedef Bit64s            Bits;
-#define sBitfs sBit64fs
-#else // _M_IX86
-typedef Bit32u            Bitu;
-typedef Bit32s            Bits;
-#define sBitfs sBit32fs
-#endif
-