From 14b689cde6dad0a2bff9a9668139b3796112e71f Mon Sep 17 00:00:00 2001
From: negativeExponent <negativeExponent@users.noreply.github.com>
Date: Mon, 16 Nov 2020 18:13:51 +0800
Subject: [PATCH] Add mapper 293

---
 src/boards/293.c   | 86 ++++++++++++++++++++++++++++++++++++++++++++++
 src/ines-correct.h |  3 ++
 src/ines.c         |  2 ++
 src/ines.h         |  1 +
 4 files changed, 92 insertions(+)
 create mode 100644 src/boards/293.c

diff --git a/src/boards/293.c b/src/boards/293.c
new file mode 100644
index 0000000..7496388
--- /dev/null
+++ b/src/boards/293.c
@@ -0,0 +1,86 @@
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2020 negativeExponent
+ *
+ * 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
+ *
+ * NewStar 12-in-1 and 76-in-1
+ */
+
+#include "mapinc.h"
+
+static uint8 regs[2];
+static SFORMAT StateRegs[] =
+{
+	{ regs, 2, "REGS" },
+	{ 0 }
+};
+
+static void Sync(void) {
+	uint8 mode  = ((regs[0] >> 2) & 2) | ((regs[1] >> 6) & 1);
+	uint8 bank  = ((regs[1] << 5) & 0x20) | ((regs[1] >> 1) & 0x18);
+	uint8 block = (regs[0] & 7);
+	switch (mode) {
+    case 0: /* UNROM */
+        setprg16(0x8000, bank | block);
+	    setprg16(0xC000, bank | 7);
+		break;
+	case 1:
+		setprg16(0x8000, bank | block & 0xFE);
+		setprg16(0xC000, bank | 7);
+		break;
+    case 2: /* NROM-128 */
+		setprg16(0x8000, bank | block);
+	    setprg16(0xC000, bank | block);
+		break;
+    case 3: /* NROM-256 */
+		setprg32(0x8000, (bank | block) >> 1);
+	    break;
+    }
+    setchr8(0);
+    setmirror(((regs[1] >> 7) & 1) ^ 1);
+}
+
+static DECLFW(M293Write1) {
+	if (A < 0xA000) regs[0] = V;
+	regs[1] = V;
+    Sync();
+}
+
+static DECLFW(M293Write2) {
+    if (A < 0xA000) regs[1] = V;
+	regs[0] = V;
+    Sync();
+}
+
+static void M293Power(void) {
+	regs[0] = regs[1] = 0;
+	Sync();
+	SetReadHandler(0x8000, 0xFFFF, CartBR);
+	SetWriteHandler(0x8000, 0xBFFF, M293Write1);
+    SetWriteHandler(0xC000, 0xDFFF, M293Write2);
+}
+
+static void StateRestore(int version) {
+	Sync();
+}
+
+/* BMC 12-in-1/76-in-1 (NewStar) (Unl) */
+void Mapper293_Init(CartInfo *info) {
+	info->Power = M293Power;
+	GameStateRestore = StateRestore;
+	AddExState(&StateRegs, ~0, 0, 0);
+}
diff --git a/src/ines-correct.h b/src/ines-correct.h
index 7410d1a..870b2b8 100644
--- a/src/ines-correct.h
+++ b/src/ines-correct.h
@@ -657,7 +657,10 @@
 
 	/* ines mappers that uses iNes 2.0 numbers */
 
+	/* CRC32, mapperNum, SubMapper, Mirroring, hasBattery, prgRam, chrRam, region, extra flags */
 	{ 0xf6bd8e31,  281, DEFAULT,    MI_H, 0, DEFAULT, DEFAULT, DEFAULT, NOEXTRA }, /* 1997 Super HIK 4-in-1 (JY-052) [p1][!].nes */
+	/* dumps are assigned 281, but its 293 on nesdev */
+	{ 0x06256C80,  293, DEFAULT, DEFAULT, 0, DEFAULT,    0x07, DEFAULT, NOEXTRA }, /* Super 12-in-1 NewStar (UNL) */
 	{ 0x5aa23a15,  361, DEFAULT,    MI_H, 0, DEFAULT, DEFAULT, DEFAULT, NOEXTRA }, /* 4-in-1 (OK-411)[p1][!].nes */
 	{ 0xf6b9d088,  366, DEFAULT,    MI_H, 0, DEFAULT, DEFAULT, DEFAULT, NOEXTRA }, /* 4-in-1 (K-3131GS, GN-45) [p1][!].nes */
 	{ 0x503566b2,  366, DEFAULT,    MI_H, 0, DEFAULT, DEFAULT, DEFAULT, NOEXTRA }, /* 4-in-1 (K-3131SS, GN-45) [p1][!].nes */
diff --git a/src/ines.c b/src/ines.c
index 93c3761..b81fafc 100644
--- a/src/ines.c
+++ b/src/ines.c
@@ -328,6 +328,7 @@ static void CheckHInfo(void) {
 				case   1:
 				case   5:
 				case 176:
+				case 293:
 					if (moo[x].prgram >= 0) {
 						tofix |= 32;
 						iNESCart.iNES2 = 1;
@@ -702,6 +703,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "830928C",                  382, Mapper382_Init         )
 	INES_BOARD( "Caltron 9-in-1",           389, Mapper389_Init         )
 	INES_BOARD( "Realtec 8031",             390, Mapper390_Init         )
+	INES_BOARD( "NewStar 12-in-1/7-in-1",   293, Mapper293_Init         )
 	INES_BOARD( "Realtec 8210",             395, Mapper395_Init         )
 	INES_BOARD( "A88S-1",                   411, Mapper411_Init         )
 	INES_BOARD( "Brilliant Com Cocoma Pack", 516, Mapper516_Init        )
diff --git a/src/ines.h b/src/ines.h
index 43085e4..4b2e6e5 100644
--- a/src/ines.h
+++ b/src/ines.h
@@ -252,6 +252,7 @@ void J2282_Init(CartInfo *);
 void Mapper267_Init(CartInfo *);
 void Mapper269_Init(CartInfo *);
 void Mapper288_Init(CartInfo *);
+void Mapper293_Init(CartInfo *);
 void Mapper297_Init(CartInfo *);
 void Mapper353_Init(CartInfo *);
 void Mapper356_Init(CartInfo *);