From 1f2ee4ce237ac24d0b615bcc22a44a4fe8afa7e8 Mon Sep 17 00:00:00 2001
From: Barry Harris <44396066+barry65536@users.noreply.github.com>
Date: Thu, 27 Dec 2012 14:59:54 +0000
Subject: [PATCH] m68k fix for non-68000 opcode 0x6fff (iq, if you have a
 cleaner solution feel free to change it)

---
 src/cpu/m68k/m68k_in.c |  6 +++---
 src/cpu/m68k/m68kcpu.c | 14 ++++++++------
 2 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/src/cpu/m68k/m68k_in.c b/src/cpu/m68k/m68k_in.c
index 10f048775..a07d2e494 100644
--- a/src/cpu/m68k/m68k_in.c
+++ b/src/cpu/m68k/m68k_in.c
@@ -102,7 +102,7 @@ M68KMAKE_PROTOTYPE_FOOTER
 
 
 /* Build the opcode handler table */
-void m68ki_build_opcode_table(void);
+void m68ki_build_opcode_table(int is_000);
 
 extern void (*m68ki_instruction_jump_table[0x10000])(void); /* opcode handler jump table */
 extern unsigned char m68ki_cycles[][0x10000];
@@ -162,7 +162,7 @@ static void m68k_66ff(void)
 }
 
 /* Build the opcode handler jump table */
-void m68ki_build_opcode_table(void)
+void m68ki_build_opcode_table(int is_000)
 {
 	opcode_handler_struct *ostruct;
 	int instr;
@@ -256,7 +256,7 @@ void m68ki_build_opcode_table(void)
 		ostruct++;
 	}
 
-	m68ki_instruction_jump_table[0x66ff] = m68k_66ff;	// hack
+	if (is_000) m68ki_instruction_jump_table[0x66ff] = m68k_66ff;	// hack
 }
 
 
diff --git a/src/cpu/m68k/m68kcpu.c b/src/cpu/m68k/m68kcpu.c
index b87af4e66..4eda6aa61 100644
--- a/src/cpu/m68k/m68kcpu.c
+++ b/src/cpu/m68k/m68kcpu.c
@@ -607,7 +607,7 @@ void m68k_set_cpu_type(unsigned int cpu_type)
 			CYC_MOVEM_L      = 3;
 			CYC_SHIFT        = 1;
 			CYC_RESET        = 132;
-			return;
+			break;
 		case M68K_CPU_TYPE_68008:
 			CPU_TYPE         = CPU_TYPE_008;
 			CPU_ADDRESS_MASK = 0x003fffff;
@@ -623,7 +623,7 @@ void m68k_set_cpu_type(unsigned int cpu_type)
 			CYC_MOVEM_L      = 3;
 			CYC_SHIFT        = 1;
 			CYC_RESET        = 132;
-			return;
+			break;
 		case M68K_CPU_TYPE_68010:
 			CPU_TYPE         = CPU_TYPE_010;
 			CPU_ADDRESS_MASK = 0x00ffffff;
@@ -639,7 +639,7 @@ void m68k_set_cpu_type(unsigned int cpu_type)
 			CYC_MOVEM_L      = 3;
 			CYC_SHIFT        = 1;
 			CYC_RESET        = 130;
-			return;
+			break;
 		case M68K_CPU_TYPE_68EC020:
 			CPU_TYPE         = CPU_TYPE_EC020;
 			CPU_ADDRESS_MASK = 0x00ffffff;
@@ -655,7 +655,7 @@ void m68k_set_cpu_type(unsigned int cpu_type)
 			CYC_MOVEM_L      = 2;
 			CYC_SHIFT        = 0;
 			CYC_RESET        = 518;
-			return;
+			break;
 		case M68K_CPU_TYPE_68020:
 			CPU_TYPE         = CPU_TYPE_020;
 			CPU_ADDRESS_MASK = 0xffffffff;
@@ -671,8 +671,10 @@ void m68k_set_cpu_type(unsigned int cpu_type)
 			CYC_MOVEM_L      = 2;
 			CYC_SHIFT        = 0;
 			CYC_RESET        = 518;
-			return;
+			break;
 	}
+	
+	m68ki_build_opcode_table(CPU_TYPE_IS_000(CPU_TYPE));
 }
 
 /* Execute some instructions until we use up num_cycles clock cycles */
@@ -785,7 +787,7 @@ void m68k_init(void)
 	/* The first call to this function initializes the opcode handler jump table */
 	if(!emulation_initialized)
 		{
-		m68ki_build_opcode_table();
+		m68ki_build_opcode_table(CPU_TYPE_IS_000(CPU_TYPE));
 		emulation_initialized = 1;
 	}