diff --git a/src/boards/266.c b/src/boards/266.c
new file mode 100644
index 0000000..64e405a
--- /dev/null
+++ b/src/boards/266.c
@@ -0,0 +1,61 @@
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2025 NewRisingSun
+ *
+ * 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
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * 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
+ */
+
+#include "mapinc.h"
+#include "vrc2and4.h"
+
+static uint8  prg;
+
+static SFORMAT UNLCITYFIGHT_stateRegs[] ={
+	{ &prg, 1, "PRG8" },
+	{ 0 }
+};
+
+static void sync () {
+	setprg32(0x8000, prg);
+	VRC24_syncCHR(0x1FF, 0x000);
+	VRC24_syncMirror();
+}
+
+DECLFW(UNLCITYFIGHT_externalSelect) {
+	if (A &0x800)
+		(GetWriteHandler(0x4011))(0x4011, V <<3 &0x78);
+	else {
+		prg =V >>2;
+		VRC24_Sync();
+	}
+}
+
+DECLFW(UNLCITYFIGHT_unscrambleAddress) {
+	VRC24_writeReg(A &~0x6000 | A <<1 &0x4000 | A >>1 &0x2000, V);
+}
+
+void UNLCITYFIGHT_power(void) {
+	prg =0;
+	VRC24_power();
+	SetWriteHandler(0x8000, 0xFFFF, UNLCITYFIGHT_unscrambleAddress);
+}
+
+void UNLCITYFIGHT_Init (CartInfo *info) {
+	VRC24_init(info, sync, 0x04, 0x08, 1, 1, 0);
+	VRC24_ExternalSelect =UNLCITYFIGHT_externalSelect;
+	AddExState(UNLCITYFIGHT_stateRegs, ~0, 0, 0);
+	info->Power =UNLCITYFIGHT_power;
+}
diff --git a/src/boards/cityfighter.c b/src/boards/cityfighter.c
deleted file mode 100644
index 6558640..0000000
--- a/src/boards/cityfighter.c
+++ /dev/null
@@ -1,124 +0,0 @@
-/* FCE Ultra - NES/Famicom Emulator
- *
- * Copyright notice for this file:
- *  Copyright (C) 2007 CaH4e3
- *
- * 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
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * 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
- *
- * City Fighter IV sith Sound VRC4 hacked
- */
-
-#include "mapinc.h"
-
-static int32 IRQCount;
-static uint8 IRQa;
-static uint8 prg_reg, prg_mode, mirr;
-static uint8 chr_reg[8];
-static writefunc pcmwrite;
-
-static SFORMAT StateRegs[] =
-{
-	{ &IRQCount, 4, "IRQC" },
-	{ &IRQa, 1, "IRQA" },
-	{ &prg_reg, 1, "PREG" },
-	{ &prg_mode, 1, "PMOD" },
-	{ &mirr, 1, "MIRR" },
-	{ chr_reg, 8, "CREG" },
-	{ 0 }
-};
-
-static void Sync(void) {
-	int i;
-	setprg32(0x8000, prg_reg >> 2);
-	if (!prg_mode)
-		setprg8(0xC000, prg_reg);
-	for (i = 0; i < 8; i++)
-		setchr1(i << 10, chr_reg[i]);
-	switch (mirr) {
-	case 0: setmirror(MI_V); break;
-	case 1: setmirror(MI_H); break;
-	case 2: setmirror(MI_0); break;
-	case 3: setmirror(MI_1); break;
-	}
-}
-
-static DECLFW(UNLCITYFIGHTWrite) {
-	/* FCEU_printf("%04x %02x",A,V); */
-	switch (A & 0xF00C) {
-	case 0x9000: prg_reg = V & 0xC; mirr = V & 3; break;
-	case 0x9004:
-	case 0x9008:
-	case 0x900C:
-		if (A & 0x800)
-			pcmwrite(0x4011, (V & 0xf) << 3);
-		else
-			prg_reg = V & 0xC;
-		break;
-	case 0xC000:
-	case 0xC004:
-	case 0xC008:
-	case 0xC00C: prg_mode = V & 1; break;
-	case 0xD000: chr_reg[0] = (chr_reg[0] & 0xF0) | (V & 0x0F); break;
-	case 0xD004: chr_reg[0] = (chr_reg[0] & 0x0F) | (V << 4); break;
-	case 0xD008: chr_reg[1] = (chr_reg[1] & 0xF0) | (V & 0x0F); break;
-	case 0xD00C: chr_reg[1] = (chr_reg[1] & 0x0F) | (V << 4); break;
-	case 0xA000: chr_reg[2] = (chr_reg[2] & 0xF0) | (V & 0x0F); break;
-	case 0xA004: chr_reg[2] = (chr_reg[2] & 0x0F) | (V << 4); break;
-	case 0xA008: chr_reg[3] = (chr_reg[3] & 0xF0) | (V & 0x0F); break;
-	case 0xA00C: chr_reg[3] = (chr_reg[3] & 0x0F) | (V << 4); break;
-	case 0xB000: chr_reg[4] = (chr_reg[4] & 0xF0) | (V & 0x0F); break;
-	case 0xB004: chr_reg[4] = (chr_reg[4] & 0x0F) | (V << 4); break;
-	case 0xB008: chr_reg[5] = (chr_reg[5] & 0xF0) | (V & 0x0F); break;
-	case 0xB00C: chr_reg[5] = (chr_reg[5] & 0x0F) | (V << 4); break;
-	case 0xE000: chr_reg[6] = (chr_reg[6] & 0xF0) | (V & 0x0F); break;
-	case 0xE004: chr_reg[6] = (chr_reg[6] & 0x0F) | (V << 4); break;
-	case 0xE008: chr_reg[7] = (chr_reg[7] & 0xF0) | (V & 0x0F); break;
-	case 0xE00C: chr_reg[7] = (chr_reg[7] & 0x0F) | (V << 4); break;
-	case 0xF000: IRQCount = ((IRQCount & 0x1E0) | ((V & 0xF) << 1)); break;
-	case 0xF004: IRQCount = ((IRQCount & 0x1E) | ((V & 0xF) << 5)); break;
-	case 0xF008: IRQa = V & 2; X6502_IRQEnd(FCEU_IQEXT); break;
-	default:
-		break;
-	}
-	Sync();
-}
-
-static void UNLCITYFIGHTIRQ(int a) {
-	if (IRQa) {
-		IRQCount -= a;
-		if (IRQCount <= 0) {
-			X6502_IRQBegin(FCEU_IQEXT);
-		}
-	}
-}
-
-static void UNLCITYFIGHTPower(void) {
-	prg_reg = 0;
-	Sync();
-	pcmwrite = GetWriteHandler(0x4011);
-	SetReadHandler(0x8000, 0xFFFF, CartBR);
-	SetWriteHandler(0x8000, 0xFFFF, UNLCITYFIGHTWrite);
-}
-
-static void StateRestore(int version) {
-	Sync();
-}
-
-void UNLCITYFIGHT_Init(CartInfo *info) {
-	info->Power = UNLCITYFIGHTPower;
-	MapIRQHook = UNLCITYFIGHTIRQ;
-	GameStateRestore = StateRestore;
-	AddExState(&StateRegs, ~0, 0, 0);
-}