X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=cpu%2Ffame%2Ffamec_opcodes.h;h=96e467512cdc09c58f906f49de92003cd9992adb;hb=5ed2a20eaa264c72c1375943dd153c8c05403504;hp=215dbd605a3ed1023ff51bc40b4e62540020de84;hpb=80db44425aa5b46185fb9a64520f4b6f5d494ba5;p=picodrive.git

diff --git a/cpu/fame/famec_opcodes.h b/cpu/fame/famec_opcodes.h
index 215dbd6..96e4675 100644
--- a/cpu/fame/famec_opcodes.h
+++ b/cpu/fame/famec_opcodes.h
@@ -638,9 +638,7 @@ OPCODE(0x007C)
 	}
 	else
 	{
-		u32 newPC = (u32)(PC) - BasePC;
-		SET_PC(newPC-2);
-		execute_exception(M68K_PRIVILEGE_VIOLATION_EX);
+		SET_PC(execute_exception(M68K_PRIVILEGE_VIOLATION_EX, GET_PC-2, GET_SR));
 #ifdef USE_CYCLONE_TIMING
 		RET(0)
 #else
@@ -1298,9 +1296,7 @@ OPCODE(0x027C)
 	}
 	else
 	{
-		u32 newPC = (u32)(PC) - BasePC;
-		SET_PC(newPC-2);
-		execute_exception(M68K_PRIVILEGE_VIOLATION_EX);
+		SET_PC(execute_exception(M68K_PRIVILEGE_VIOLATION_EX, GET_PC-2, GET_SR));
 		RET(4)
 	}
 RET(20)
@@ -1950,10 +1946,8 @@ OPCODE(0x0A7C)
 	}
 	else
 	{
-		u32 newPC = (u32)(PC) - BasePC;
-		SET_PC(newPC-2);
-		execute_exception(M68K_PRIVILEGE_VIOLATION_EX);
-		RET(4)
+		SET_PC(execute_exception(M68K_PRIVILEGE_VIOLATION_EX, GET_PC-2, GET_SR));
+		RET(0)
 	}
 RET(20)
 }
@@ -5213,7 +5207,11 @@ OPCODE(0x0108)
 	READ_BYTE_F(adr + 2, src)
 	DREGu16((Opcode >> 9) & 7) = (res << 8) | src;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(16)
+#else
 RET(24)
+#endif
 }
 
 // MOVEPLaD
@@ -5237,7 +5235,11 @@ OPCODE(0x0148)
 	READ_BYTE_F(adr, src)
 	DREG((Opcode >> 9) & 7) = res | src;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(24)
+#else
 RET(32)
+#endif
 }
 
 // MOVEPWDa
@@ -5253,7 +5255,11 @@ OPCODE(0x0188)
 	WRITE_BYTE_F(adr + 0, res >> 8)
 	WRITE_BYTE_F(adr + 2, res >> 0)
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(16)
+#else
 RET(24)
+#endif
 }
 
 // MOVEPLDa
@@ -5274,7 +5280,11 @@ OPCODE(0x01C8)
 	adr += 2;
 	WRITE_BYTE_F(adr, res >> 0)
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(24)
+#else
 RET(32)
+#endif
 }
 
 // MOVEB
@@ -5460,6 +5470,7 @@ OPCODE(0x1F00)
 RET(8)
 }
 
+#if 0
 // MOVEB
 OPCODE(0x1008)
 {
@@ -5692,6 +5703,7 @@ OPCODE(0x1F08)
 */
 RET(8)
 }
+#endif
 
 // MOVEB
 OPCODE(0x1010)
@@ -8279,7 +8291,7 @@ OPCODE(0x2F00)
 	adr = AREG(7) - 4;
 	AREG(7) = adr;
 	PRE_IO
-	WRITE_LONG_F(adr, res)
+	WRITE_LONG_DEC_F(adr, res)
 	POST_IO
 RET(12)
 }
@@ -8462,7 +8474,7 @@ OPCODE(0x2F08)
 	adr = AREG(7) - 4;
 	AREG(7) = adr;
 	PRE_IO
-	WRITE_LONG_F(adr, res)
+	WRITE_LONG_DEC_F(adr, res)
 	POST_IO
 RET(12)
 }
@@ -8657,7 +8669,7 @@ OPCODE(0x2F10)
 	flag_N = res >> 24;
 	adr = AREG(7) - 4;
 	AREG(7) = adr;
-	WRITE_LONG_F(adr, res)
+	WRITE_LONG_DEC_F(adr, res)
 	POST_IO
 RET(20)
 }
@@ -8862,7 +8874,7 @@ OPCODE(0x2F18)
 	flag_N = res >> 24;
 	adr = AREG(7) - 4;
 	AREG(7) = adr;
-	WRITE_LONG_F(adr, res)
+	WRITE_LONG_DEC_F(adr, res)
 	POST_IO
 RET(20)
 }
@@ -9067,7 +9079,7 @@ OPCODE(0x2F20)
 	flag_N = res >> 24;
 	adr = AREG(7) - 4;
 	AREG(7) = adr;
-	WRITE_LONG_F(adr, res)
+	WRITE_LONG_DEC_F(adr, res)
 	POST_IO
 RET(22)
 }
@@ -9272,7 +9284,7 @@ OPCODE(0x2F28)
 	flag_N = res >> 24;
 	adr = AREG(7) - 4;
 	AREG(7) = adr;
-	WRITE_LONG_F(adr, res)
+	WRITE_LONG_DEC_F(adr, res)
 	POST_IO
 RET(24)
 }
@@ -9477,7 +9489,7 @@ OPCODE(0x2F30)
 	flag_N = res >> 24;
 	adr = AREG(7) - 4;
 	AREG(7) = adr;
-	WRITE_LONG_F(adr, res)
+	WRITE_LONG_DEC_F(adr, res)
 	POST_IO
 RET(26)
 }
@@ -9672,7 +9684,7 @@ OPCODE(0x2F38)
 	flag_N = res >> 24;
 	adr = AREG(7) - 4;
 	AREG(7) = adr;
-	WRITE_LONG_F(adr, res)
+	WRITE_LONG_DEC_F(adr, res)
 	POST_IO
 RET(24)
 }
@@ -9867,7 +9879,7 @@ OPCODE(0x2F39)
 	flag_N = res >> 24;
 	adr = AREG(7) - 4;
 	AREG(7) = adr;
-	WRITE_LONG_F(adr, res)
+	WRITE_LONG_DEC_F(adr, res)
 	POST_IO
 RET(28)
 }
@@ -10072,7 +10084,7 @@ OPCODE(0x2F3A)
 	flag_N = res >> 24;
 	adr = AREG(7) - 4;
 	AREG(7) = adr;
-	WRITE_LONG_F(adr, res)
+	WRITE_LONG_DEC_F(adr, res)
 	POST_IO
 RET(24)
 }
@@ -10277,7 +10289,7 @@ OPCODE(0x2F3B)
 	flag_N = res >> 24;
 	adr = AREG(7) - 4;
 	AREG(7) = adr;
-	WRITE_LONG_F(adr, res)
+	WRITE_LONG_DEC_F(adr, res)
 	POST_IO
 RET(26)
 }
@@ -10460,7 +10472,7 @@ OPCODE(0x2F3C)
 	adr = AREG(7) - 4;
 	AREG(7) = adr;
 	PRE_IO
-	WRITE_LONG_F(adr, res)
+	WRITE_LONG_DEC_F(adr, res)
 	POST_IO
 RET(20)
 }
@@ -10665,7 +10677,7 @@ OPCODE(0x2F1F)
 	flag_N = res >> 24;
 	adr = AREG(7) - 4;
 	AREG(7) = adr;
-	WRITE_LONG_F(adr, res)
+	WRITE_LONG_DEC_F(adr, res)
 	POST_IO
 RET(20)
 }
@@ -10870,7 +10882,7 @@ OPCODE(0x2F27)
 	flag_N = res >> 24;
 	adr = AREG(7) - 4;
 	AREG(7) = adr;
-	WRITE_LONG_F(adr, res)
+	WRITE_LONG_DEC_F(adr, res)
 	POST_IO
 RET(22)
 }
@@ -16552,9 +16564,7 @@ OPCODE(0x46C0)
 	}
 	else
 	{
-		u32 oldPC=GET_PC;
-		SET_PC(oldPC-2)
-		execute_exception(M68K_PRIVILEGE_VIOLATION_EX);
+		SET_PC(execute_exception(M68K_PRIVILEGE_VIOLATION_EX, GET_PC-2, GET_SR));
 		RET(4)
 	}
 RET(12)
@@ -16583,9 +16593,7 @@ OPCODE(0x46D0)
 	}
 	else
 	{
-		u32 oldPC=GET_PC;
-		SET_PC(oldPC-2)
-		execute_exception(M68K_PRIVILEGE_VIOLATION_EX);
+		SET_PC(execute_exception(M68K_PRIVILEGE_VIOLATION_EX, GET_PC-2, GET_SR));
 		RET(4)
 	}
 RET(16)
@@ -16615,9 +16623,7 @@ OPCODE(0x46D8)
 	}
 	else
 	{
-		u32 oldPC=GET_PC;
-		SET_PC(oldPC-2)
-		execute_exception(M68K_PRIVILEGE_VIOLATION_EX);
+		SET_PC(execute_exception(M68K_PRIVILEGE_VIOLATION_EX, GET_PC-2, GET_SR));
 		RET(4)
 	}
 RET(16)
@@ -16647,9 +16653,7 @@ OPCODE(0x46E0)
 	}
 	else
 	{
-		u32 oldPC=GET_PC;
-		SET_PC(oldPC-2)
-		execute_exception(M68K_PRIVILEGE_VIOLATION_EX);
+		SET_PC(execute_exception(M68K_PRIVILEGE_VIOLATION_EX, GET_PC-2, GET_SR));
 		RET(4)
 	}
 RET(18)
@@ -16679,9 +16683,7 @@ OPCODE(0x46E8)
 	}
 	else
 	{
-		u32 oldPC=GET_PC;
-		SET_PC(oldPC-2)
-		execute_exception(M68K_PRIVILEGE_VIOLATION_EX);
+		SET_PC(execute_exception(M68K_PRIVILEGE_VIOLATION_EX, GET_PC-2, GET_SR));
 		RET(4)
 	}
 RET(20)
@@ -16711,9 +16713,7 @@ OPCODE(0x46F0)
 	}
 	else
 	{
-		u32 oldPC=GET_PC;
-		SET_PC(oldPC-2)
-		execute_exception(M68K_PRIVILEGE_VIOLATION_EX);
+		SET_PC(execute_exception(M68K_PRIVILEGE_VIOLATION_EX, GET_PC-2, GET_SR));
 		RET(4)
 	}
 RET(22)
@@ -16743,9 +16743,7 @@ OPCODE(0x46F8)
 	}
 	else
 	{
-		u32 oldPC=GET_PC;
-		SET_PC(oldPC-2)
-		execute_exception(M68K_PRIVILEGE_VIOLATION_EX);
+		SET_PC(execute_exception(M68K_PRIVILEGE_VIOLATION_EX, GET_PC-2, GET_SR));
 		RET(4)
 	}
 RET(20)
@@ -16774,9 +16772,7 @@ OPCODE(0x46F9)
 	}
 	else
 	{
-		u32 oldPC=GET_PC;
-		SET_PC(oldPC-2)
-		execute_exception(M68K_PRIVILEGE_VIOLATION_EX);
+		SET_PC(execute_exception(M68K_PRIVILEGE_VIOLATION_EX, GET_PC-2, GET_SR));
 		RET(4)
 	}
 RET(24)
@@ -16802,13 +16798,11 @@ OPCODE(0x46FA)
 			ASP = res;
 		}
 		POST_IO
-		CHECK_INT_TO_JUMP(24)
+		CHECK_INT_TO_JUMP(20)
 	}
 	else
 	{
-		u32 oldPC=GET_PC;
-		SET_PC(oldPC-2)
-		execute_exception(M68K_PRIVILEGE_VIOLATION_EX);
+		SET_PC(execute_exception(M68K_PRIVILEGE_VIOLATION_EX, GET_PC-2, GET_SR));
 		RET(4)
 	}
 RET(20)
@@ -16838,9 +16832,7 @@ OPCODE(0x46FB)
 	}
 	else
 	{
-		u32 oldPC=GET_PC;
-		SET_PC(oldPC-2)
-		execute_exception(M68K_PRIVILEGE_VIOLATION_EX);
+		SET_PC(execute_exception(M68K_PRIVILEGE_VIOLATION_EX, GET_PC-2, GET_SR));
 		RET(4)
 	}
 RET(22)
@@ -16866,9 +16858,7 @@ OPCODE(0x46FC)
 	}
 	else
 	{
-		u32 oldPC=GET_PC;
-		SET_PC(oldPC-2)
-		execute_exception(M68K_PRIVILEGE_VIOLATION_EX);
+		SET_PC(execute_exception(M68K_PRIVILEGE_VIOLATION_EX, GET_PC-2, GET_SR));
 		RET(4)
 	}
 RET(16)
@@ -16898,9 +16888,7 @@ OPCODE(0x46DF)
 	}
 	else
 	{
-		u32 oldPC=GET_PC;
-		SET_PC(oldPC-2)
-		execute_exception(M68K_PRIVILEGE_VIOLATION_EX);
+		SET_PC(execute_exception(M68K_PRIVILEGE_VIOLATION_EX, GET_PC-2, GET_SR));
 		RET(4)
 	}
 RET(16)
@@ -16930,9 +16918,7 @@ OPCODE(0x46E7)
 	}
 	else
 	{
-		u32 oldPC=GET_PC;
-		SET_PC(oldPC-2)
-		execute_exception(M68K_PRIVILEGE_VIOLATION_EX);
+		SET_PC(execute_exception(M68K_PRIVILEGE_VIOLATION_EX, GET_PC-2, GET_SR));
 		RET(4)
 	}
 RET(18)
@@ -18306,8 +18292,19 @@ OPCODE(0x4AD0)
 	flag_V = 0;
 	flag_NotZ = res;
 	flag_N = res;
+#ifdef PICODRIVE_HACK
+	if (g_m68kcontext == &PicoCpuFS68k) {
+		res |= 0x80;
+		WRITE_BYTE_F(adr, res);
+	}
+#endif
+
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(18)
+#else
 RET(8)
+#endif
 }
 
 // TAS
@@ -18324,8 +18321,20 @@ OPCODE(0x4AD8)
 	flag_V = 0;
 	flag_NotZ = res;
 	flag_N = res;
+
+#ifdef PICODRIVE_HACK
+	if (g_m68kcontext == &PicoCpuFS68k) {
+		res |= 0x80;
+		WRITE_BYTE_F(adr, res);
+	}
+#endif
+
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(18)
+#else
 RET(8)
+#endif
 }
 
 // TAS
@@ -18342,8 +18351,20 @@ OPCODE(0x4AE0)
 	flag_V = 0;
 	flag_NotZ = res;
 	flag_N = res;
+
+#ifdef PICODRIVE_HACK
+	if (g_m68kcontext == &PicoCpuFS68k) {
+		res |= 0x80;
+		WRITE_BYTE_F(adr, res);
+	}
+#endif
+
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(20)
+#else
 RET(10)
+#endif
 }
 
 // TAS
@@ -18360,8 +18381,20 @@ OPCODE(0x4AE8)
 	flag_V = 0;
 	flag_NotZ = res;
 	flag_N = res;
+
+#ifdef PICODRIVE_HACK
+	if (g_m68kcontext == &PicoCpuFS68k) {
+		res |= 0x80;
+		WRITE_BYTE_F(adr, res);
+	}
+#endif
+
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(22)
+#else
 RET(12)
+#endif
 }
 
 // TAS
@@ -18378,8 +18411,20 @@ OPCODE(0x4AF0)
 	flag_V = 0;
 	flag_NotZ = res;
 	flag_N = res;
+
+#ifdef PICODRIVE_HACK
+	if (g_m68kcontext == &PicoCpuFS68k) {
+		res |= 0x80;
+		WRITE_BYTE_F(adr, res);
+	}
+#endif
+
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(24)
+#else
 RET(14)
+#endif
 }
 
 // TAS
@@ -18395,8 +18440,20 @@ OPCODE(0x4AF8)
 	flag_V = 0;
 	flag_NotZ = res;
 	flag_N = res;
+
+#ifdef PICODRIVE_HACK
+	if (g_m68kcontext == &PicoCpuFS68k) {
+		res |= 0x80;
+		WRITE_BYTE_F(adr, res);
+	}
+#endif
+
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(22)
+#else
 RET(12)
+#endif
 }
 
 // TAS
@@ -18412,8 +18469,20 @@ OPCODE(0x4AF9)
 	flag_V = 0;
 	flag_NotZ = res;
 	flag_N = res;
+
+#ifdef PICODRIVE_HACK
+	if (g_m68kcontext == &PicoCpuFS68k) {
+		res |= 0x80;
+		WRITE_BYTE_F(adr, res);
+	}
+#endif
+
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(26)
+#else
 RET(16)
+#endif
 }
 
 // TAS
@@ -18430,8 +18499,20 @@ OPCODE(0x4ADF)
 	flag_V = 0;
 	flag_NotZ = res;
 	flag_N = res;
+
+#ifdef PICODRIVE_HACK
+	if (g_m68kcontext == &PicoCpuFS68k) {
+		res |= 0x80;
+		WRITE_BYTE_F(adr, res);
+	}
+#endif
+
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(18)
+#else
 RET(8)
+#endif
 }
 
 // TAS
@@ -18448,35 +18529,41 @@ OPCODE(0x4AE7)
 	flag_V = 0;
 	flag_NotZ = res;
 	flag_N = res;
+
+#ifdef PICODRIVE_HACK
+	if (g_m68kcontext == &PicoCpuFS68k) {
+		res |= 0x80;
+		WRITE_BYTE_F(adr, res);
+	}
+#endif
+
 	POST_IO
-RET(10)
+#ifdef USE_CYCLONE_TIMING
+RET(20)
+#else
+RET(8)
+#endif
 }
 
 // ILLEGAL
 OPCODE(0x4AFC)
 {
-	u32 oldPC=GET_PC;
-	SET_PC(oldPC-2)
-	execute_exception(M68K_ILLEGAL_INSTRUCTION_EX);
-RET(4)
+	SET_PC(execute_exception(M68K_ILLEGAL_INSTRUCTION_EX, GET_PC-2, GET_SR));
+RET(0)
 }
 
 // ILLEGAL A000-AFFF
 OPCODE(0xA000)
 {
-	u32 oldPC=GET_PC;
-	SET_PC(oldPC-2)
-	execute_exception(M68K_1010_EX);
-RET(4)
+	SET_PC(execute_exception(M68K_1010_EX, GET_PC-2, GET_SR));
+RET(0)
 }
 
 // ILLEGAL F000-FFFF
 OPCODE(0xF000)
 {
-	u32 oldPC=GET_PC;
-	SET_PC(oldPC-2)
-	execute_exception(M68K_1111_EX);
-RET(4)
+	SET_PC(execute_exception(M68K_1111_EX, GET_PC-2, GET_SR));
+RET(0) // 4 already taken by exc. handler
 }
 
 // MOVEMaR
@@ -19036,7 +19123,7 @@ RET(12)
 // TRAP
 OPCODE(0x4E40)
 {
-	execute_exception(M68K_TRAP_BASE_EX + (Opcode & 0xF));
+	SET_PC(execute_exception(M68K_TRAP_BASE_EX + (Opcode & 0xF), GET_PC, GET_SR));
 RET(4)
 }
 
@@ -19107,9 +19194,7 @@ OPCODE(0x4E60)
 
 	if (!flag_S)
 	{
-		u32 oldPC=GET_PC;
-		SET_PC(oldPC-2)
-		execute_exception(M68K_PRIVILEGE_VIOLATION_EX);
+		SET_PC(execute_exception(M68K_PRIVILEGE_VIOLATION_EX, GET_PC-2, GET_SR));
 		RET(4)
 	}
 	res = AREGu32((Opcode >> 0) & 7);
@@ -19125,9 +19210,7 @@ OPCODE(0x4E68)
 
 	if (!flag_S)
 	{
-		u32 oldPC=GET_PC;
-		SET_PC(oldPC-2)
-		execute_exception(M68K_PRIVILEGE_VIOLATION_EX);
+		SET_PC(execute_exception(M68K_PRIVILEGE_VIOLATION_EX, GET_PC-2, GET_SR));
 		RET(4)
 	}
 	res = ASP;
@@ -19143,9 +19226,7 @@ OPCODE(0x4E70)
 
 	if (!flag_S)
 	{
-		u32 oldPC=GET_PC;
-		SET_PC(oldPC-2)
-		execute_exception(M68K_PRIVILEGE_VIOLATION_EX);
+		SET_PC(execute_exception(M68K_PRIVILEGE_VIOLATION_EX, GET_PC-2, GET_SR));
 		RET(4)
 	}
 	PRE_IO
@@ -19169,9 +19250,7 @@ OPCODE(0x4E72)
 
 	if (!flag_S)
 	{
-		u32 oldPC=GET_PC;
-		SET_PC(oldPC-2)
-		execute_exception(M68K_PRIVILEGE_VIOLATION_EX);
+		SET_PC(execute_exception(M68K_PRIVILEGE_VIOLATION_EX, GET_PC-2, GET_SR));
 		RET(4)
 	}
 	FETCH_WORD(res);
@@ -19183,7 +19262,7 @@ OPCODE(0x4E72)
 		AREG(7) = ASP;
 		ASP = res;
 	}
-	m68kcontext.execinfo |= M68K_HALTED;
+	m68kcontext.execinfo |= FM68K_HALTED;
 	m68kcontext.io_cycle_counter = 0;
 RET(4)
 }
@@ -19196,9 +19275,7 @@ OPCODE(0x4E73)
 
 	if (!flag_S)
 	{
-		u32 oldPC=GET_PC;
-		SET_PC(oldPC-2)
-		execute_exception(M68K_PRIVILEGE_VIOLATION_EX);
+		SET_PC(execute_exception(M68K_PRIVILEGE_VIOLATION_EX, GET_PC-2, GET_SR));
 		RET(4)
 	}
 	PRE_IO
@@ -19213,7 +19290,7 @@ OPCODE(0x4E73)
 		ASP = res;
 	}
 	POST_IO
-	m68kcontext.execinfo &= ~(M68K_EMULATE_GROUP_0|M68K_EMULATE_TRACE|M68K_DO_TRACE);
+	m68kcontext.execinfo &= ~(FM68K_EMULATE_GROUP_0|FM68K_EMULATE_TRACE|FM68K_DO_TRACE);
 	CHECK_INT_TO_JUMP(20)
 RET(20)
 }
@@ -19236,7 +19313,7 @@ RET(16)
 OPCODE(0x4E76)
 {
 	if (flag_V & 0x80)
-		execute_exception(M68K_TRAPV_EX);
+		SET_PC(execute_exception(M68K_TRAPV_EX, GET_PC, GET_SR));
 RET(4)
 }
 
@@ -19499,7 +19576,7 @@ OPCODE(0x4180)
 	if (((s32)res < 0) || (res > src))
 	{
 		flag_N = res >> 8;
-		execute_exception(M68K_CHK_EX);
+		SET_PC(execute_exception(M68K_CHK_EX, GET_PC, GET_SR));
 	}
 RET(10)
 }
@@ -19517,7 +19594,7 @@ OPCODE(0x4190)
 	if (((s32)res < 0) || (res > src))
 	{
 		flag_N = res >> 8;
-		execute_exception(M68K_CHK_EX);
+		SET_PC(execute_exception(M68K_CHK_EX, GET_PC, GET_SR));
 	}
 	POST_IO
 RET(14)
@@ -19537,7 +19614,7 @@ OPCODE(0x4198)
 	if (((s32)res < 0) || (res > src))
 	{
 		flag_N = res >> 8;
-		execute_exception(M68K_CHK_EX);
+		SET_PC(execute_exception(M68K_CHK_EX, GET_PC, GET_SR));
 	}
 	POST_IO
 RET(14)
@@ -19557,7 +19634,7 @@ OPCODE(0x41A0)
 	if (((s32)res < 0) || (res > src))
 	{
 		flag_N = res >> 8;
-		execute_exception(M68K_CHK_EX);
+		SET_PC(execute_exception(M68K_CHK_EX, GET_PC, GET_SR));
 	}
 	POST_IO
 RET(16)
@@ -19577,7 +19654,7 @@ OPCODE(0x41A8)
 	if (((s32)res < 0) || (res > src))
 	{
 		flag_N = res >> 8;
-		execute_exception(M68K_CHK_EX);
+		SET_PC(execute_exception(M68K_CHK_EX, GET_PC, GET_SR));
 	}
 	POST_IO
 RET(18)
@@ -19597,7 +19674,7 @@ OPCODE(0x41B0)
 	if (((s32)res < 0) || (res > src))
 	{
 		flag_N = res >> 8;
-		execute_exception(M68K_CHK_EX);
+		SET_PC(execute_exception(M68K_CHK_EX, GET_PC, GET_SR));
 	}
 	POST_IO
 RET(20)
@@ -19616,7 +19693,7 @@ OPCODE(0x41B8)
 	if (((s32)res < 0) || (res > src))
 	{
 		flag_N = res >> 8;
-		execute_exception(M68K_CHK_EX);
+		SET_PC(execute_exception(M68K_CHK_EX, GET_PC, GET_SR));
 	}
 	POST_IO
 RET(18)
@@ -19635,7 +19712,7 @@ OPCODE(0x41B9)
 	if (((s32)res < 0) || (res > src))
 	{
 		flag_N = res >> 8;
-		execute_exception(M68K_CHK_EX);
+		SET_PC(execute_exception(M68K_CHK_EX, GET_PC, GET_SR));
 	}
 	POST_IO
 RET(22)
@@ -19655,7 +19732,7 @@ OPCODE(0x41BA)
 	if (((s32)res < 0) || (res > src))
 	{
 		flag_N = res >> 8;
-		execute_exception(M68K_CHK_EX);
+		SET_PC(execute_exception(M68K_CHK_EX, GET_PC, GET_SR));
 	}
 	POST_IO
 RET(18)
@@ -19675,7 +19752,7 @@ OPCODE(0x41BB)
 	if (((s32)res < 0) || (res > src))
 	{
 		flag_N = res >> 8;
-		execute_exception(M68K_CHK_EX);
+		SET_PC(execute_exception(M68K_CHK_EX, GET_PC, GET_SR));
 	}
 	POST_IO
 RET(20)
@@ -19692,7 +19769,7 @@ OPCODE(0x41BC)
 	if (((s32)res < 0) || (res > src))
 	{
 		flag_N = res >> 8;
-		execute_exception(M68K_CHK_EX);
+		SET_PC(execute_exception(M68K_CHK_EX, GET_PC, GET_SR));
 	}
 	POST_IO
 RET(14)
@@ -19712,7 +19789,7 @@ OPCODE(0x419F)
 	if (((s32)res < 0) || (res > src))
 	{
 		flag_N = res >> 8;
-		execute_exception(M68K_CHK_EX);
+		SET_PC(execute_exception(M68K_CHK_EX, GET_PC, GET_SR));
 	}
 	POST_IO
 RET(14)
@@ -19732,7 +19809,7 @@ OPCODE(0x41A7)
 	if (((s32)res < 0) || (res > src))
 	{
 		flag_N = res >> 8;
-		execute_exception(M68K_CHK_EX);
+		SET_PC(execute_exception(M68K_CHK_EX, GET_PC, GET_SR));
 	}
 	POST_IO
 RET(16)
@@ -23892,7 +23969,7 @@ OPCODE(0x5048)
 	dst = AREGu32((Opcode >> 0) & 7);
 	res = dst + src;
 	AREG((Opcode >> 0) & 7) = res;
-#ifdef USE_CYCLONE_TIMING_ // breaks Project-X
+#ifdef USE_CYCLONE_TIMING
 RET(4)
 #else
 RET(8)
@@ -26965,7 +27042,7 @@ OPCODE(0x80C0)
 	src = DREGu16((Opcode >> 0) & 7);
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 RET(140)
 #else
@@ -27013,7 +27090,7 @@ OPCODE(0x80D0)
 	READ_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 RET(144)
 #else
@@ -27062,7 +27139,7 @@ OPCODE(0x80D8)
 	READ_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 RET(144)
 #else
@@ -27111,7 +27188,7 @@ OPCODE(0x80E0)
 	READ_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 RET(146)
 #else
@@ -27160,7 +27237,7 @@ OPCODE(0x80E8)
 	READ_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 RET(148)
 #else
@@ -27209,7 +27286,7 @@ OPCODE(0x80F0)
 	READ_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 RET(150)
 #else
@@ -27257,7 +27334,7 @@ OPCODE(0x80F8)
 	READ_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 RET(148)
 #else
@@ -27305,7 +27382,7 @@ OPCODE(0x80F9)
 	READ_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 RET(162)
 #else
@@ -27354,7 +27431,7 @@ OPCODE(0x80FA)
 	READ_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 RET(148)
 #else
@@ -27403,7 +27480,7 @@ OPCODE(0x80FB)
 	READ_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 RET(160)
 #else
@@ -27449,7 +27526,7 @@ OPCODE(0x80FC)
 	FETCH_WORD(src);
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 RET(144)
 #else
@@ -27498,7 +27575,7 @@ OPCODE(0x80DF)
 	READ_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 RET(144)
 #else
@@ -27547,7 +27624,7 @@ OPCODE(0x80E7)
 	READ_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 RET(146)
 #else
@@ -27593,7 +27670,7 @@ OPCODE(0x81C0)
 	src = (s32)DREGs16((Opcode >> 0) & 7);
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 goto end81C0;
 #endif
@@ -27649,7 +27726,7 @@ OPCODE(0x81D0)
 	READSX_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 goto end81D0;
 #endif
@@ -27706,7 +27783,7 @@ OPCODE(0x81D8)
 	READSX_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 goto end81D8;
 #endif
@@ -27763,7 +27840,7 @@ OPCODE(0x81E0)
 	READSX_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 goto end81E0;
 #endif
@@ -27820,7 +27897,7 @@ OPCODE(0x81E8)
 	READSX_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 goto end81E8;
 #endif
@@ -27877,7 +27954,7 @@ OPCODE(0x81F0)
 	READSX_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 goto end81F0;
 #endif
@@ -27933,7 +28010,7 @@ OPCODE(0x81F8)
 	READSX_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 goto end81F8;
 #endif
@@ -27989,7 +28066,7 @@ OPCODE(0x81F9)
 	READSX_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 goto end81F9;
 #endif
@@ -28046,7 +28123,7 @@ OPCODE(0x81FA)
 	READSX_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 goto end81FA;
 #endif
@@ -28103,7 +28180,7 @@ OPCODE(0x81FB)
 	READSX_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 goto end81FB;
 #endif
@@ -28157,7 +28234,7 @@ OPCODE(0x81FC)
 	FETCH_SWORD(src);
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 goto end81FC;
 #endif
@@ -28214,7 +28291,7 @@ OPCODE(0x81DF)
 	READSX_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 goto end81DF;
 #endif
@@ -28271,7 +28348,7 @@ OPCODE(0x81E7)
 	READSX_WORD_F(adr, src)
 	if (src == 0)
 	{
-		execute_exception(M68K_ZERO_DIVIDE_EX);
+		SET_PC(execute_exception(M68K_ZERO_DIVIDE_EX, GET_PC, GET_SR));
 #ifdef USE_CYCLONE_TIMING_DIV
 goto end81E7;
 #endif
@@ -28333,6 +28410,7 @@ RET(4)
 }
 
 // SUBaD
+#if 0
 OPCODE(0x9008)
 {
 	u32 adr, res;
@@ -28352,6 +28430,7 @@ OPCODE(0x9008)
 */
 RET(4)
 }
+#endif
 
 // SUBaD
 OPCODE(0x9010)
@@ -30026,7 +30105,11 @@ OPCODE(0x90D0)
 	res = dst - src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(12)
+#else
 RET(10)
+#endif
 }
 
 // SUBA
@@ -30043,7 +30126,11 @@ OPCODE(0x90D8)
 	res = dst - src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(12)
+#else
 RET(10)
+#endif
 }
 
 // SUBA
@@ -30060,7 +30147,11 @@ OPCODE(0x90E0)
 	res = dst - src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(14)
+#else
 RET(12)
+#endif
 }
 
 // SUBA
@@ -30077,7 +30168,11 @@ OPCODE(0x90E8)
 	res = dst - src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(16)
+#else
 RET(14)
+#endif
 }
 
 // SUBA
@@ -30094,7 +30189,11 @@ OPCODE(0x90F0)
 	res = dst - src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(18)
+#else
 RET(16)
+#endif
 }
 
 // SUBA
@@ -30110,7 +30209,11 @@ OPCODE(0x90F8)
 	res = dst - src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(16)
+#else
 RET(14)
+#endif
 }
 
 // SUBA
@@ -30126,7 +30229,11 @@ OPCODE(0x90F9)
 	res = dst - src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(20)
+#else
 RET(18)
+#endif
 }
 
 // SUBA
@@ -30143,7 +30250,11 @@ OPCODE(0x90FA)
 	res = dst - src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(16)
+#else
 RET(14)
+#endif
 }
 
 // SUBA
@@ -30160,7 +30271,11 @@ OPCODE(0x90FB)
 	res = dst - src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(18)
+#else
 RET(16)
+#endif
 }
 
 // SUBA
@@ -30190,7 +30305,11 @@ OPCODE(0x90DF)
 	res = dst - src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(12)
+#else
 RET(10)
+#endif
 }
 
 // SUBA
@@ -30207,7 +30326,11 @@ OPCODE(0x90E7)
 	res = dst - src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(14)
+#else
 RET(12)
+#endif
 }
 
 // SUBA
@@ -30461,6 +30584,7 @@ RET(4)
 }
 
 // CMP
+#if 0
 OPCODE(0xB008)
 {
 	u32 adr, res;
@@ -30479,6 +30603,7 @@ OPCODE(0xB008)
 */
 RET(4)
 }
+#endif
 
 // CMP
 OPCODE(0xB010)
@@ -34756,6 +34881,7 @@ RET(4)
 }
 
 // ADDaD
+#if 0
 OPCODE(0xD008)
 {
 	u32 adr, res;
@@ -34775,6 +34901,7 @@ OPCODE(0xD008)
 */
 RET(4)
 }
+#endif
 
 // ADDaD
 OPCODE(0xD010)
@@ -36449,7 +36576,11 @@ OPCODE(0xD0D0)
 	res = dst + src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(12)
+#else
 RET(10)
+#endif
 }
 
 // ADDA
@@ -36466,7 +36597,11 @@ OPCODE(0xD0D8)
 	res = dst + src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(12)
+#else
 RET(10)
+#endif
 }
 
 // ADDA
@@ -36483,7 +36618,11 @@ OPCODE(0xD0E0)
 	res = dst + src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(14)
+#else
 RET(12)
+#endif
 }
 
 // ADDA
@@ -36500,7 +36639,11 @@ OPCODE(0xD0E8)
 	res = dst + src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(16)
+#else
 RET(14)
+#endif
 }
 
 // ADDA
@@ -36517,7 +36660,11 @@ OPCODE(0xD0F0)
 	res = dst + src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(18)
+#else
 RET(16)
+#endif
 }
 
 // ADDA
@@ -36533,7 +36680,11 @@ OPCODE(0xD0F8)
 	res = dst + src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(16)
+#else
 RET(14)
+#endif
 }
 
 // ADDA
@@ -36549,7 +36700,11 @@ OPCODE(0xD0F9)
 	res = dst + src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(20)
+#else
 RET(18)
+#endif
 }
 
 // ADDA
@@ -36566,7 +36721,11 @@ OPCODE(0xD0FA)
 	res = dst + src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(16)
+#else
 RET(14)
+#endif
 }
 
 // ADDA
@@ -36583,7 +36742,11 @@ OPCODE(0xD0FB)
 	res = dst + src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(18)
+#else
 RET(16)
+#endif
 }
 
 // ADDA
@@ -36613,7 +36776,11 @@ OPCODE(0xD0DF)
 	res = dst + src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(12)
+#else
 RET(10)
+#endif
 }
 
 // ADDA
@@ -36630,7 +36797,11 @@ OPCODE(0xD0E7)
 	res = dst + src;
 	AREG((Opcode >> 9) & 7) = res;
 	POST_IO
+#ifdef USE_CYCLONE_TIMING
+RET(14)
+#else
 RET(12)
+#endif
 }
 
 // ADDA
@@ -39790,3 +39961,99 @@ OPCODE(0xE7E7)
 RET(14)
 }
 
+#ifdef PICODRIVE_HACK
+#if 0
+#define UPDATE_IDLE_COUNT { \
+	extern int idle_hit_counter; \
+	idle_hit_counter++; \
+}
+#else
+#define UPDATE_IDLE_COUNT
+#endif
+
+// BRA
+OPCODE(0x6001_idle)
+{
+#ifdef FAMEC_CHECK_BRANCHES
+	u32 newPC = (u32)(PC) - BasePC;
+	s8 offs=Opcode;
+	newPC += offs;
+	SET_PC(newPC);
+	CHECK_BRANCH_EXCEPTION(offs)
+#else
+	PC += ((s8)(Opcode & 0xFE)) >> 1;
+#endif
+	UPDATE_IDLE_COUNT
+	m68kcontext.io_cycle_counter = 10;
+RET(10)
+}
+
+// BCC
+OPCODE(0x6601_idle)
+{
+	if (flag_NotZ)
+	{
+		UPDATE_IDLE_COUNT
+		PC += ((s8)(Opcode & 0xFE)) >> 1;
+		m68kcontext.io_cycle_counter = 8;
+	}
+RET(8)
+}
+
+OPCODE(0x6701_idle)
+{
+	if (!flag_NotZ)
+	{
+		UPDATE_IDLE_COUNT
+		PC += ((s8)(Opcode & 0xFE)) >> 1;
+		m68kcontext.io_cycle_counter = 8;
+	}
+RET(8)
+}
+
+
+extern int SekIsIdleCode(unsigned short *dst, int bytes);
+extern int SekRegisterIdlePatch(unsigned int pc, int oldop, int newop, void *ctx);
+
+OPCODE(idle_detector_bcc8)
+{
+	extern int idledet_start_frame;
+	extern char Pico[];
+	int frame_count, cond_true, bytes, ret, newop;
+	u16 *dest_pc;
+
+	dest_pc = PC + (((s8)(Opcode & 0xFE)) >> 1);
+
+	frame_count = *(int *)(Pico+0x22208+0x1c); // Pico.m.frame_count
+	if (frame_count < idledet_start_frame)
+		goto end;
+
+	bytes = 0 - (s8)(Opcode & 0xFE) - 2;
+	ret = SekIsIdleCode(dest_pc, bytes);
+	newop = (Opcode & 0xfe) | 0x7100;
+	if (!ret) newop |= 0x200;
+	if (  Opcode & 0x0100)  newop |= 0x400; // beq
+	if (!(Opcode & 0x0f00)) newop |= 0xc00; // bra
+
+	ret = SekRegisterIdlePatch(GET_PC - 2, Opcode, newop, &m68kcontext);
+	switch (ret)
+	{
+		case 0: PC[-1] = newop; break;
+		case 1: break;
+		case 2: JumpTable[Opcode] = (Opcode & 0x0f00) ?
+				((Opcode & 0x0100) ? CAST_OP(0x6701) : CAST_OP(0x6601)) :
+				CAST_OP(0x6001); break;
+	}
+
+end:
+	if ((Opcode & 0xff00) == 0x6000) cond_true = 1;
+	else cond_true = (Opcode & 0x0100) ? !flag_NotZ : flag_NotZ; // beq?
+	if (cond_true)
+	{
+		PC = dest_pc;
+		m68kcontext.io_cycle_counter -= 2;
+	}
+RET(8)
+}
+
+#endif // PICODRIVE_HACK