From 158c268d0f1b697aae521df1d3f68315aa55e170 Mon Sep 17 00:00:00 2001
From: NewRisingSun <8vytz1+dhp372pv94ebg@sharklasers.com>
Date: Mon, 7 Apr 2025 23:11:06 +0200
Subject: [PATCH] Rewrite mapper 298 to use modular VRC2/4 emulation.

---
 src/boards/298.c     |  33 +++++++++++++
 src/boards/tf-1201.c | 114 -------------------------------------------
 2 files changed, 33 insertions(+), 114 deletions(-)
 create mode 100644 src/boards/298.c
 delete mode 100644 src/boards/tf-1201.c

diff --git a/src/boards/298.c b/src/boards/298.c
new file mode 100644
index 0000000..af557d8
--- /dev/null
+++ b/src/boards/298.c
@@ -0,0 +1,33 @@
+/* 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 void sync () {
+	VRC24_syncWRAM(0);
+	VRC24_syncPRG(0x01F, 0x000);
+	VRC24_syncCHR(0x1FF, 0x000);
+	VRC24_syncMirror();
+}
+
+void UNLTF1201_Init (CartInfo *info) {
+	VRC24_init(info, sync, 0x02, 0x01, 1, 0, 8);
+}
diff --git a/src/boards/tf-1201.c b/src/boards/tf-1201.c
deleted file mode 100644
index 4d3aba6..0000000
--- a/src/boards/tf-1201.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/* FCE Ultra - NES/Famicom Emulator
- *
- * Copyright notice for this file:
- *  Copyright (C) 2005 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
- *
- * Lethal Weapon (VRC4 mapper)
- */
-
-#include "mapinc.h"
-
-static uint8 prg0, prg1, mirr, swap;
-static uint8 chr[8];
-static uint8 IRQCount;
-static uint8 IRQPre;
-static uint8 IRQa;
-
-static SFORMAT StateRegs[] =
-{
-	{ &prg0, 1, "PRG0" },
-	{ &prg0, 1, "PRG1" },
-	{ &mirr, 1, "MIRR" },
-	{ &swap, 1, "SWAP" },
-	{ chr, 8, "CHR" },
-	{ &IRQCount, 1, "IRQC" },
-	{ &IRQPre, 1, "IRQP" },
-	{ &IRQa, 1, "IRQA" },
-	{ 0 }
-};
-
-static void SyncPrg(void) {
-	if (swap & 3) {
-		setprg8(0x8000, ~1);
-		setprg8(0xC000, prg0);
-	} else {
-		setprg8(0x8000, prg0);
-		setprg8(0xC000, ~1);
-	}
-	setprg8(0xA000, prg1);
-	setprg8(0xE000, ~0);
-}
-
-static void SyncChr(void) {
-	int i;
-	for (i = 0; i < 8; i++)
-		setchr1(i << 10, chr[i]);
-	setmirror(mirr ^ 1);
-}
-
-static void StateRestore(int version) {
-	SyncPrg();
-	SyncChr();
-}
-
-static DECLFW(UNLTF1201Write) {
-	A = (A & 0xF003) | ((A & 0xC) >> 2);
-	if ((A >= 0xB000) && (A <= 0xE003)) {
-		int ind = (((A >> 11) - 6) | (A & 1)) & 7;
-		int sar = ((A & 2) << 1);
-		chr[ind] = (chr[ind] & (0xF0 >> sar)) | ((V & 0x0F) << sar);
-		SyncChr();
-	}
-	else
-	{
-		switch (A & 0xF003)
-		{
-			case 0x8000: prg0 = V; SyncPrg(); break;
-			case 0xA000: prg1 = V; SyncPrg(); break;
-			case 0x9000: mirr = V & 1; SyncChr(); break;
-			case 0x9001: swap = V & 3; SyncPrg(); break;
-			case 0xF000: IRQCount = ((IRQCount & 0xF0) | (V & 0xF)); break;
-			case 0xF002: IRQCount = ((IRQCount & 0x0F) | ((V & 0xF) << 4)); break;
-			case 0xF001:
-			case 0xF003: IRQa = V & 2; X6502_IRQEnd(FCEU_IQEXT); if (scanline < 240) IRQCount -= 8; break;
-		}
-	}
-}
-
-static void UNLTF1201IRQCounter(void) {
-	if (IRQa) {
-		IRQCount++;
-		if (IRQCount == 237) {
-			X6502_IRQBegin(FCEU_IQEXT);
-		}
-	}
-}
-
-static void UNLTF1201Power(void) {
-	IRQPre = IRQCount = IRQa = 0;
-	SetReadHandler(0x8000, 0xFFFF, CartBR);
-	SetWriteHandler(0x8000, 0xFFFF, UNLTF1201Write);
-	SyncPrg();
-	SyncChr();
-}
-
-void UNLTF1201_Init(CartInfo *info) {
-	info->Power = UNLTF1201Power;
-	GameHBIRQHook = UNLTF1201IRQCounter;
-	GameStateRestore = StateRestore;
-	AddExState(&StateRegs, ~0, 0, 0);
-}