--- hatari/src/uae-cpu/newcpu.h	2019/04/09 08:47:24	1.1.1.12
+++ hatari/src/uae-cpu/newcpu.h	2019/04/09 08:54:38	1.1.1.15
@@ -7,8 +7,8 @@
   *
   * Adaptation to Hatari by Thomas Huth
   *
-  * This file is distributed under the GNU Public License, version 2 or at
-  * your option any later version. Read the file gpl.txt for details.
+  * This file is distributed under the GNU General Public License, version 2
+  * or at your option any later version. Read the file gpl.txt for details.
   */
 
 #ifndef UAE_NEWCPU_H
@@ -20,10 +20,10 @@
 
 
 /* Possible exceptions sources for M68000_Exception() and Exception() */
-#define M68000_EXCEPTION_SRC_CPU	1	/* exception is a direct CPU exception */
-#define M68000_EXCEPTION_SRC_INT_MFP	2	/* exception caused by an MFP interrupt */
-#define M68000_EXCEPTION_SRC_INT_VIDEO	3	/* exception caused by a video interrupt */
-
+#define M68000_EXC_SRC_CPU	    1  /* Direct CPU exception */
+#define M68000_EXC_SRC_AUTOVEC  2  /* Auto-vector exception (e.g. VBL) */
+#define M68000_EXC_SRC_INT_MFP	3  /* MFP interrupt exception */
+#define M68000_EXC_SRC_INT_DSP  4  /* DSP interrupt exception */
 
 
 /* Special flags */
@@ -39,6 +39,7 @@
 #define SPCFLAG_MFP 0x200
 #define SPCFLAG_EXEC 0x400
 #define SPCFLAG_MODE_CHANGE 0x800
+#define SPCFLAG_DSP 0x1000
 
 
 #ifndef SET_CFLG
@@ -168,17 +169,47 @@ STATIC_INLINE uaecptr m68k_getpc_p (uae_
 STATIC_INLINE void refill_prefetch (uae_u32 currpc, uae_u32 offs)
 {
     uae_u32 t = (currpc + offs) & ~1;
-    uae_s32 pc_p_offs = t - currpc;
-    uae_u8 *ptr = regs.pc_p + pc_p_offs;
     uae_u32 r;
 #ifdef UNALIGNED_PROFITABLE
-    r = *(uae_u32 *)ptr;
+    if ( t - regs.prefetch_pc == 2 )				/* keep 1 word and read 1 new word */
+    {
+        r = regs.prefetch;
+        r <<= 16;
+        r |= get_word (t+2);
+    }
+    else
+    {
+	/* [NP] FIXME : when we refill with 4 bytes, we should not read one long */
+	/* but 2 words, else some bus errors are not detected if the address overlaps */
+	/* on a bus error region (eg : get_long(t=213ffffe) doesn't give a bus error, */
+	/* but it should. This should be better handled in memory.c */
+//        r = get_long (t);					/* read 2 new words */
+        r = get_word (t);
+        r <<= 16;
+        r |= get_word (t+2);
+    }
     regs.prefetch = r;
 #else
-    r = do_get_mem_long (ptr);
+    if ( t - regs.prefetch_pc == 2 )				/* keep 1 word and read 1 new word */
+    {
+        r = do_get_mem_word (((uae_u8 *)&regs.prefetch) + 2);
+        r <<= 16;
+        r |= get_word (t+2);
+    }
+    else
+    {
+	/* [NP] FIXME : when we refill with 4 bytes, we should not read one long */
+	/* but 2 words, else some bus errors are not detected if the address overlaps */
+	/* on a bus error region (eg : get_long(t=213ffffe) doesn't give a bus error, */
+	/* but it should. This should be better handled in memory.c */
+//        r = get_long (t);					/* read 2 new words */
+        r = get_word (t);
+        r <<= 16;
+        r |= get_word (t+2);
+    }
     do_put_mem_long (&regs.prefetch, r);
 #endif
-    /* printf ("PC %lx T %lx PCPOFFS %d R %lx\n", currpc, t, pc_p_offs, r); */
+//fprintf (stderr,"PC %x PREFPC %x T %x R %x\n", currpc, regs.prefetch_pc, t, r);
     regs.prefetch_pc = t;
 }
 
@@ -204,6 +235,7 @@ STATIC_INLINE uae_u32 get_iword_prefetch
     uae_u32 addr = currpc + o;
     uae_u32 offs = addr - regs.prefetch_pc;
     uae_u32 v;
+//fprintf (stderr,"get_iword PC %lx ADDR %lx OFFS %lx V %lx\n", currpc, addr, offs, v);
     if (offs > 3) {
 	refill_prefetch (currpc, o);
 	offs = addr - regs.prefetch_pc;
@@ -211,6 +243,7 @@ STATIC_INLINE uae_u32 get_iword_prefetch
     v = do_get_mem_word (((uae_u8 *)&regs.prefetch) + offs);
     if (offs >= 2)
 	refill_prefetch (currpc, 2);
+//fprintf (stderr,"get_iword PC %lx ADDR %lx OFFS %lx V %lx\n", currpc, addr, offs, v);
     /* printf ("get_iword PC %lx ADDR %lx OFFS %lx V %lx\n", currpc, addr, offs, v); */
     return v;
 }
@@ -351,4 +384,8 @@ extern uae_u32 caar, cacr;
 /* Family of the latest instruction executed (to check for pairing) */
 extern int OpcodeFamily;			/* see instrmnem in readcpu.h */
 
+/* How many cycles to add to the current instruction in case a "misaligned" bus acces is made */
+/* (used when addressing mode is d8(an,ix)) */
+extern int BusCyclePenalty;
+
 #endif	/* UAE_NEWCPU_H */