diff --git a/src/boards/356.c b/src/boards/356.c
index 666b7aa..60e8e5a 100644
--- a/src/boards/356.c
+++ b/src/boards/356.c
@@ -3,10 +3,10 @@
  * Copyright notice for this file:
  *  Copyright (C) 2020
  *
- * 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 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
@@ -15,90 +15,44 @@
  *
  * 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.
- */
-
-/* NES 2.0 Mapper 356 -  J.Y. Company's 7-in-1 Rockman (JY-208)
- * All registers work as INES Mapper 045, except $6000 sequential register 2 (third write):
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ *
  */
 
 #include "mapinc.h"
-#include "mmc3.h"
+#include "asic_tc3294.h"
 
-static uint8* CHRRAM = NULL;
-static uint32 CHRRAMSIZE = 0;
+static uint8 *CHRRAM = NULL;
+static uint32 CHRRAMSize;
 
-static void M356CW(uint32 A, uint8 V) {
-	if (EXPREGS[2] & 0x20) {
-		uint8 NV = V;
-		if (EXPREGS[2] & 8)
-			NV &= (1 << ((EXPREGS[2] & 7) + 1)) - 1;
-		else
-		if (EXPREGS[2])
-			NV &= 0;	/* hack ;( don't know exactly how it should be */
-		NV |= EXPREGS[0] | ((EXPREGS[2] & 0xF0) << 4);
-		setchr1(A, NV);
-	} else
-		setchr8r(0x10, 0);
-}
-
-static void M356PW(uint32 A, uint8 V) {
-	uint8 MV = V & ((EXPREGS[3] & 0x3F) ^ 0x3F);
-	MV |= EXPREGS[1];
-	if (UNIFchrrama)
-		MV |= ((EXPREGS[2] & 0x40) << 2);
-	setprg8(A, MV);
-}
-
-static void M356MW(uint8 V) {
-	if (EXPREGS[2] & 0x40)
-		SetupCartMirroring(4, 1, CHRRAM);
+static void sync () {
+	TC3294_syncPRG(0xFF, 0x00);
+	if (TC3294_reg[2] &0x20)
+		TC3294_syncCHR(0x1FF, 0x00);
 	else
-		setmirror((V & 1) ^ 1);
+		setchr8r(0x10, 0);
+	if (TC3294_reg[2] &0x40) {
+		setntamem(CHRptr[0x10] +0x0000, 1, 0);
+		setntamem(CHRptr[0x10] +0x0400, 1, 1);
+		setntamem(CHRptr[0x10] +0x0800, 1, 2);
+		setntamem(CHRptr[0x10] +0x0C00, 1, 3);
+	} else
+		TC3294_syncMirror();
 }
 
-static DECLFW(M356Write) {
-	if (!(EXPREGS[3] & 0x40)) {
-		EXPREGS[EXPREGS[4]] = V;
-		EXPREGS[4] = (EXPREGS[4] + 1) & 3;
-		FixMMC3PRG(MMC3_cmd);
-		FixMMC3CHR(MMC3_cmd);
+static void close (void) {
+	if (CHRRAM) {
+		FCEU_gfree(CHRRAM);
+		CHRRAM =NULL;
 	}
 }
 
-static void M356Close(void) {
-	GenMMC3Close();
-	if (CHRRAM)
-		FCEU_free(CHRRAM);
-	CHRRAM = NULL;
-}
-
-static void M356Reset(void) {
-	EXPREGS[0] = EXPREGS[1] = EXPREGS[3] = EXPREGS[4] = 0;
-	EXPREGS[2] = 0x0F;
-	MMC3RegReset();
-}
-
-static void M356Power(void) {
-	EXPREGS[4] = 0;
-	EXPREGS[0] = EXPREGS[1] = EXPREGS[3] = EXPREGS[4] = 0;
-	EXPREGS[2] = 0x0F;
-	GenMMC3Power();
-	SetWriteHandler(0x6000, 0x7FFF, M356Write);
-}
-
-void Mapper356_Init(CartInfo* info) {
-	GenMMC3_Init(info, 128, 128, 0, 0);
-	cwrap = M356CW;
-	pwrap = M356PW;
-	mwrap = M356MW;
-	info->Reset = M356Reset;
-	info->Power = M356Power;
-	info->Close = M356Close;
-	AddExState(EXPREGS, 5, 0, "EXPR");
-
-	CHRRAMSIZE = 8192;
-	CHRRAM = (uint8*)FCEU_gmalloc(CHRRAMSIZE);
-	SetupCartCHRMapping(0x10, CHRRAM, CHRRAMSIZE, 1);
-	AddExState(CHRRAM, CHRRAMSIZE, 0, "CHRR");
+void Mapper356_Init (CartInfo *info) {
+	TC3294_init(info, sync);
+	info->Close = close;
+	CHRRAMSize = 8192;
+	CHRRAM = (uint8*)FCEU_gmalloc(CHRRAMSize);
+	AddExState(CHRRAM, CHRRAMSize, 0, "CRAM");
+	SetupCartCHRMapping(0x10, CHRRAM, CHRRAMSize, 1);
 }
diff --git a/src/boards/asic_tc3294.c b/src/boards/asic_tc3294.c
index 467bb48..04ccc41 100644
--- a/src/boards/asic_tc3294.c
+++ b/src/boards/asic_tc3294.c
@@ -24,10 +24,10 @@
 
 static void (*TC3294_cbSync)();
 static uint8 TC3294_index;
-static uint8 TC3294_reg[4];
+uint8 TC3294_reg[4];
 
 static SFORMAT TC3294_state[] = {
-	{ TC3294_reg,   8, "329S" },
+	{ TC3294_reg,   4, "329S" },
 	{&TC3294_index, 1, "329I" },
 	{ 0 }
 };
@@ -99,8 +99,8 @@ void TC3294_power () {
 void TC3294_init (CartInfo *info, void (*sync)()) {
 	MMC3_init(info, sync, MMC3_TYPE_AX5202P, NULL, NULL, NULL, TC3294_write);
 	TC3294_addExState();
-	TC3294_configure(TC3294_cbSync);
+	TC3294_configure(sync);
 	info->Power = TC3294_power;
-	info->Reset = TC3294_cbSync;
+	info->Reset = TC3294_clear;
 	GameStateRestore = TC3294_restore;
 }
diff --git a/src/boards/asic_tc3294.h b/src/boards/asic_tc3294.h
index baa4e6e..1be126c 100644
--- a/src/boards/asic_tc3294.h
+++ b/src/boards/asic_tc3294.h
@@ -21,6 +21,7 @@
 #ifndef _ASIC_TC3294_H
 #define _ASIC_TC3294_H
 
+extern uint8 TC3294_reg[4];
 void TC3294_syncWRAM (int);
 void TC3294_syncPRG (int, int);
 void TC3294_syncCHR (int, int);