--- BasiliskII/src/Unix/sysdeps.h	2000/07/13 13:47:11	1.11
+++ BasiliskII/src/Unix/sysdeps.h	2000/11/30 16:20:52	1.15
@@ -69,18 +69,35 @@
 
 /* Mac ROM is not write protected */
 #define ROM_IS_WRITE_PROTECTED 0
+#define USE_SCRATCHMEM_SUBTERFUGE 1
 
 #else
 
 /* Mac and host address space are distinct */
+#ifndef REAL_ADDRESSING
 #define REAL_ADDRESSING 0
+#endif
 
 /* Using 68k emulator */
 #define EMULATED_68K 1
 
-/* Mac ROM is write protected */
-#define ROM_IS_WRITE_PROTECTED 1
+/* The m68k emulator uses a prefetch buffer ? */
+#define USE_PREFETCH_BUFFER 0
+
+/* Mac ROM is write protected when banked memory is used */
+#if REAL_ADDRESSING || DIRECT_ADDRESSING
+# define ROM_IS_WRITE_PROTECTED 0
+# define USE_SCRATCHMEM_SUBTERFUGE 1
+#else
+# define ROM_IS_WRITE_PROTECTED 1
+#endif
+
+#endif
 
+/* Direct Addressing requires Video on SEGV signals */
+#if DIRECT_ADDRESSING && !ENABLE_VOSF
+# undef  ENABLE_VOSF
+# define ENABLE_VOSF 1
 #endif
 
 /* ExtFS is supported */
@@ -121,6 +138,15 @@ typedef long long int64;
 #else
 #error "No 8 byte type, you lose."
 #endif
+#if SIZEOF_VOID_P == 4
+typedef uint32 uintptr;
+typedef int32 intptr;
+#elif SIZEOF_VOID_P == 8
+typedef uint64 uintptr;
+typedef int64 intptr;
+#else
+#error "Unsupported size of pointer"
+#endif
 
 /* Time data type for Time Manager emulation */
 #ifdef HAVE_CLOCK_GETTIME
@@ -148,6 +174,10 @@ typedef uae_u32 uaecptr;
 # define CPU_CAN_ACCESS_UNALIGNED
 #endif
 
+/* Timing functions */
+extern uint64 GetTicks_usec(void);
+extern void Delay_usec(uint32 usec);
+
 /* UAE CPU defines */
 #ifdef WORDS_BIGENDIAN
 
@@ -239,16 +269,8 @@ static inline void do_put_mem_word(uae_u
 #define ENUMDECL typedef enum
 #define ENUMNAME(name) name
 #define write_log printf
-
-#ifdef USE_COMPILER
-#define USE_MAPPED_MEMORY
-#define CAN_MAP_MEMORY
-#define NO_EXCEPTION_3
-#define NO_PREFETCH_BUFFER
-#else
 #undef USE_MAPPED_MEMORY
 #undef CAN_MAP_MEMORY
-#endif
 
 #ifdef X86_ASSEMBLY
 #define ASM_SYM_FOR_FUNC(a) __asm__(a)