bus/nes: Added support for GN-91B and NC-20MB multicart boards. (#8672)

New working software list additions (nes.xml) ----------------------------------- 2 in 1 (GN-91B) [Consolethinks, Nikolka] 20 in 1 (CA-006) [Consolethinks, Nikolka] 2 in 1 (VT-2037) [Consolethinks, Nikolka] 2 in 1 (VT-2038) [Consolethinks, Nikolka] Super 2 in 1 (WQ 2047) [Consolethinks, Nikolka]
2025-06-03 19:36:26 +03:00 · 2021-10-08 04:02:16 -08:00 · 2021-10-08 04:02:16 -08:00 · cdd5ad2045
commit cdd5ad2045
parent 49a62ba99c
7 changed files with 210 additions and 19 deletions
--- a/hash/nes.xml
+++ b/hash/nes.xml
@ -79192,6 +79192,22 @@ be better to redump them properly. -->
 		</part>
 	</software>

+<!-- Gunsmoke has a bug that makes some enemies and barrels not appear in-game until they are near the bottom of the screen. They cannot be interacted with until they materialize. It needs to be confirmed if this happens on hardware. -->
+	<software name="mc_2gn91">
+		<description>2 in 1 (GN-91B)</description>
+		<year>19??</year>
+		<publisher>&lt;pirate&gt;</publisher>
+		<part name="cart" interface="nes_cart">
+			<feature name="slot" value="bmc_gn91b" />
+			<dataarea name="prg" size="262144">
+				<rom name="2-in-1 (gn-91b).prg" size="262144" crc="3c1d4ae3" sha1="ea31bf78a2bcb9fff752c12b07dfff8d65ba89fe" status="baddump" />
+			</dataarea>
+			<!-- 8k VRAM on cartridge -->
+			<dataarea name="vram" size="8192">
+			</dataarea>
+		</part>
+	</software>
+
 	<software name="mc_2hikg">
 		<description>2 in 1 1996 Super HIK Gold Card (NT-803)</description>
 		<year>19??</year>
@ -79226,6 +79242,60 @@ be better to redump them properly. -->
 		</part>
 	</software>

+	<software name="mc_2vt37">
+		<description>2 in 1 (VT-2037)</description>
+		<year>199?</year>
+		<publisher>&lt;pirate&gt;</publisher>
+		<info name="usage" value="Press reset to switch games."/>
+		<part name="cart" interface="nes_cart">
+			<feature name="slot" value="resettxrom" />
+			<feature name="outer-prg-size" value="128K" />
+			<feature name="outer-chr-size" value="128K" />
+			<dataarea name="prg" size="262144">
+				<rom name="2-in-1 (vt-2037).prg" size="262144" crc="9c1ab014" sha1="d5b565c27cab0fbe0cf2bc46a748f292323faa4b" status="baddump" />
+			</dataarea>
+			<dataarea name="chr" size="262144">
+				<rom name="2-in-1 (vt-2037).chr" size="262144" crc="df2c7a9b" sha1="8b40907ea0e753fecdfcb1962dae0fa7f76f21c7" status="baddump" />
+			</dataarea>
+		</part>
+	</software>
+
+	<software name="mc_2vt38">
+		<description>2 in 1 (VT-2038)</description>
+		<year>199?</year>
+		<publisher>&lt;pirate&gt;</publisher>
+		<info name="usage" value="Press reset to switch games."/>
+		<part name="cart" interface="nes_cart">
+			<feature name="slot" value="resettxrom" />
+			<feature name="outer-prg-size" value="128K" />
+			<feature name="outer-chr-size" value="128K" />
+			<dataarea name="prg" size="262144">
+				<rom name="2-in-1 (vt-2038).prg" size="262144" crc="0b86f42d" sha1="f39e83f7aadcd62e9901604dd58e6ba0f8601a47" status="baddump" />
+			</dataarea>
+			<dataarea name="chr" size="262144">
+				<rom name="2-in-1 (vt-2038).chr" size="262144" crc="46d5f59b" sha1="3273cd0f59aa765d3d7c14dfb97221a06b303ae9" status="baddump" />
+			</dataarea>
+		</part>
+	</software>
+
+	<software name="mc_2wq47">
+		<description>Super 2 in 1 (WQ 2047)</description>
+		<year>1998</year>
+		<publisher>&lt;pirate&gt;</publisher>
+		<info name="usage" value="Press reset to switch games."/>
+		<part name="cart" interface="nes_cart">
+			<feature name="slot" value="resettxrom" />
+			<feature name="outer-prg-size" value="128K" />
+			<feature name="outer-chr-size" value="128K" />
+			<dataarea name="prg" size="262144">
+				<rom name="super 2-in-1 (wq 2047, 1998).prg" size="262144" crc="018a778d" sha1="b6d579b431f2b3869b7a738b4778069d4002a6c0" status="baddump" />
+			</dataarea>
+			<dataarea name="chr" size="262144">
+				<rom name="super 2-in-1 (wq 2047, 1998).chr" size="262144" crc="16685dcc" sha1="c51cf4df3122610cf2f90a9b75b77e2942f3ba1a" status="baddump" />
+			</dataarea>
+		</part>
+	</software>
+
 <!-- JP Ronny (Unl) [headerless crc: a9c69118] has been ripped from this multicart -->
 	<software name="mc_20asd">
 		<description>ASDER 20 in 1</description>
@ -79303,6 +79373,22 @@ be better to redump them properly. -->
 		</part>
 	</software>

+	<software name="mc_20ca6">
+		<description>20 in 1 (CA-006)</description>
+		<year>19??</year>
+		<publisher>&lt;pirate&gt;</publisher>
+		<part name="cart" interface="nes_cart">
+			<feature name="slot" value="bmc_nc20mb" />
+			<feature name="pcb_model" value="NC-20MB" />
+			<dataarea name="prg" size="524288">
+				<rom name="20-in-1 (ca-006).prg" size="524288" crc="2f544832" sha1="9aeb8ea71ceff1eeea5a293c4257d259d1652aae" status="baddump" />
+			</dataarea>
+			<!-- 8k VRAM on cartridge -->
+			<dataarea name="vram" size="8192">
+			</dataarea>
+		</part>
+	</software>
+
 	<software name="mc_200">
 		<description>200 in 1 - Elfland</description>
 		<year>1992</year>
@ -81553,6 +81639,7 @@ be better to redump them properly. -->
 		</part>
 	</software>

+<!-- Gunsmoke has a bug that makes some enemies and barrels not appear in-game until they are near the bottom of the screen. They cannot be interacted with until they materialize. It needs to be confirmed if this happens on hardware. -->
 	<software name="mc_8et40">
 		<description>8 in 1 (ET40, 821242c)</description>
 		<year>19??</year>
--- a/src/devices/bus/nes/multigame.cpp
+++ b/src/devices/bus/nes/multigame.cpp
@ -8,6 +8,10 @@

 Here we emulate several PCBs used in multigame pirate carts (not MMC-3 based)

+ TODO: Investigate further Gunsmoke on mc_8et40 and mc_2gn91. Both exhibit the
+ same bug where enemies/barrels don't appear until they are halfway down the
+ screen. They are both almost the same minor hack of the US release.
+
 ***********************************************************************************************************/


@ -53,6 +57,7 @@ DEFINE_DEVICE_TYPE(NES_BMC_CTC09,      nes_bmc_ctc09_device,      "nes_bmc_ctc09
 DEFINE_DEVICE_TYPE(NES_BMC_GKA,        nes_bmc_gka_device,        "nes_bmc_gka",        "NES Cart BMC GK-A PCB")
 DEFINE_DEVICE_TYPE(NES_BMC_GKB,        nes_bmc_gkb_device,        "nes_bmc_gkb",        "NES Cart BMC GK-B PCB")
 DEFINE_DEVICE_TYPE(NES_BMC_GKCXIN1,    nes_bmc_gkcxin1_device,    "nes_bmc_gkcxin1",    "NES Cart BMC GKCXIN1 PCB")
+DEFINE_DEVICE_TYPE(NES_BMC_GN91B,      nes_bmc_gn91b_device,      "nes_bmc_gn91b",      "NES Cart BMC GN-91B PCB")
 DEFINE_DEVICE_TYPE(NES_BMC_HP898F,     nes_bmc_hp898f_device,     "nes_bmc_hp898f",     "NES Cart BMC HP-898F PCB")
 DEFINE_DEVICE_TYPE(NES_BMC_K1029,      nes_bmc_k1029_device,      "nes_bmc_k1029",      "NES Cart BMC K-1029 PCB")
 DEFINE_DEVICE_TYPE(NES_BMC_K3036,      nes_bmc_k3036_device,      "nes_bmc_k3036",      "NES Cart BMC K-3036 PCB")
@ -90,6 +95,7 @@ DEFINE_DEVICE_TYPE(NES_BMC_GOLD260,    nes_bmc_gold260_device,    "nes_bmc_gold2
 DEFINE_DEVICE_TYPE(NES_BMC_TH22913,    nes_bmc_th22913_device,    "nes_bmc_th22913",    "NES Cart BMC TH2291-3 PCB")
 DEFINE_DEVICE_TYPE(NES_BMC_4IN1RESET,  nes_bmc_4in1reset_device,  "nes_bmc_4in1reset",  "NES Cart BMC 4 in 1 (Reset Based) PCB")
 DEFINE_DEVICE_TYPE(NES_BMC_42IN1RESET, nes_bmc_42in1reset_device, "nes_bmc_42in1reset", "NES Cart BMC 42 in 1 (Reset Based) PCB")
+DEFINE_DEVICE_TYPE(NES_BMC_NC20MB,     nes_bmc_nc20mb_device,     "nes_bmc_nc20mb",     "NES Cart BMC NC-20MB PCB")
 DEFINE_DEVICE_TYPE(NES_BMC_LC160,      nes_bmc_lc160_device,      "nes_bmc_lc160",      "NES Cart BMC Little Com 160 PCB")


@ -241,6 +247,11 @@ nes_bmc_gkcxin1_device::nes_bmc_gkcxin1_device(const machine_config &mconfig, co
 {
 }

+nes_bmc_gn91b_device::nes_bmc_gn91b_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+	: nes_nrom_device(mconfig, NES_BMC_GN91B, tag, owner, clock), m_latch(0)
+{
+}
+
 nes_bmc_hp898f_device::nes_bmc_hp898f_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
 	: nes_nrom_device(mconfig, NES_BMC_HP898F, tag, owner, clock)
 {
@ -413,8 +424,18 @@ nes_bmc_4in1reset_device::nes_bmc_4in1reset_device(const machine_config &mconfig
 {
 }

+nes_bmc_42in1reset_device::nes_bmc_42in1reset_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock)
+	: nes_nrom_device(mconfig, type, tag, owner, clock), m_latch(0), m_mirror_flip(type == NES_BMC_NC20MB)
+{
+}
+
 nes_bmc_42in1reset_device::nes_bmc_42in1reset_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
-	: nes_nrom_device(mconfig, NES_BMC_42IN1RESET, tag, owner, clock), m_latch(0)
+	: nes_bmc_42in1reset_device(mconfig, NES_BMC_42IN1RESET, tag, owner, clock)
+{
+}
+
+nes_bmc_nc20mb_device::nes_bmc_nc20mb_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+	: nes_bmc_42in1reset_device(mconfig, NES_BMC_NC20MB, tag, owner, clock)
 {
 }

@ -744,6 +765,21 @@ void nes_bmc_gka_device::pcb_reset()
 	m_reg[0] = m_reg[1] = 0;
 }

+void nes_bmc_gn91b_device::device_start()
+{
+	common_start();
+	save_item(NAME(m_latch));
+}
+
+void nes_bmc_gn91b_device::pcb_reset()
+{
+	prg16_89ab(0);
+	prg16_cdef(7);
+	chr8(0, CHRRAM);
+
+	m_latch = 0;
+}
+
 void nes_bmc_k3036_device::pcb_reset()
 {
 	prg16_89ab(0);
@ -1411,10 +1447,6 @@ void nes_a65as_device::write_h(offs_t offset, uint8_t data)

 In MAME: Supported.

- TODO: Gunsmoke on 8-in-1 (ET40) has invisible sprites
- that suddenly appear closer to the bottom of the screen.
- Mirroring is correct, so is this a bug on the cartridge?
-
 -------------------------------------------------*/

 void nes_t262_device::write_h(offs_t offset, u8 data)
@ -1887,6 +1919,32 @@ void nes_bmc_gkcxin1_device::write_h(offs_t offset, u8 data)
 	chr8(offset & 0x07, CHRROM);
 }

+/*-------------------------------------------------
+
+ Board BMC-GN-91B
+
+ Unknown Bootleg Multigame Board
+ Games: 2 in 1
+
+ NES 2.0: mapper 431
+
+ In MAME: Supported.
+
+ -------------------------------------------------*/
+
+void nes_bmc_gn91b_device::write_h(offs_t offset, u8 data)
+{
+	LOG_MMC(("bmc_gn91b write_h, offset: %04x, data: %02x\n", offset, data));
+
+	if (offset < 0x4000)
+	{
+		m_latch = (offset & 0x10) >> 1;
+		prg16_cdef(m_latch | 0x07);
+		set_nt_mirroring(m_latch ? PPU_MIRROR_HORZ : PPU_MIRROR_VERT);
+	}
+	prg16_89ab(m_latch | (data & 0x07));
+}
+
 /*-------------------------------------------------

 Board HP-898F
@ -2970,17 +3028,22 @@ uint8_t nes_bmc_gold150_device::read_h(offs_t offset)

 /*-------------------------------------------------

- BMC-42IN1RESETBASED
+ BMC-42IN1RESETBASED, BMC-NC-20MB

- Unknown Bootleg Multigame Board
- Games: 42 (22 + 20) in 1
+ Games: 42 (22 + 20) in 1, 20 in 1 (CA-006)

- There is an identical dump identified as SUPER22GAMES
- that supposedly selected between the two menus by
- dip switch. It's not clear which, if any, variants of
- this cart exist, nor if this is really reset-based.
+ Here we implement two nearly identical mappers. The
+ NC-20MB board does not have the reset latch and its
+ mirroring bit is inverted from the 42 in 1.
+
+ There is an identical dump of the 42 in 1 identified
+ as SUPER22GAMES that supposedly selected between the
+ two menus via dip switch. It's not clear which, if
+ any, variants of this cart exist, nor if this is
+ really reset-based.

 iNES: mapper 233
+ NES 2.0: mapper 433

 In MAME: Supported.

@ -2995,8 +3058,8 @@ void nes_bmc_42in1reset_device::write_h(offs_t offset, u8 data)
 	prg16_89ab(bank & ~mode);
 	prg16_cdef(bank | mode);

-	// some sources say there are 1-screen modes, but this works as is
-	set_nt_mirroring(BIT(data, 6) ? PPU_MIRROR_VERT : PPU_MIRROR_HORZ);
+	// some sources say there are 1-screen modes for 42-in-1, but this works as is
+	set_nt_mirroring(BIT(data, 6) ^ m_mirror_flip ? PPU_MIRROR_VERT : PPU_MIRROR_HORZ);
 }

 /*-------------------------------------------------
--- a/src/devices/bus/nes/multigame.h
+++ b/src/devices/bus/nes/multigame.h
@ -469,6 +469,27 @@ public:
 };


+// ======================> nes_bmc_gn91b_device
+
+class nes_bmc_gn91b_device : public nes_nrom_device
+{
+public:
+	// construction/destruction
+	nes_bmc_gn91b_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+
+	virtual void write_h(offs_t offset, u8 data) override;
+
+	virtual void pcb_reset() override;
+
+protected:
+	// device-level overrides
+	virtual void device_start() override;
+
+private:
+	u8 m_latch;
+};
+
+
 // ======================> nes_bmc_hp898f_device

 class nes_bmc_hp898f_device : public nes_nrom_device
@ -1056,11 +1077,24 @@ public:
 	virtual void pcb_reset() override;

 protected:
+	// construction/destruction
+	nes_bmc_42in1reset_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock);
+
 	// device-level overrides
 	virtual void device_start() override;

 private:
-	u8 m_latch;
+	u8 m_latch, m_mirror_flip;
+};
+
+
+// ======================> nes_bmc_nc20mb_device
+
+class nes_bmc_nc20mb_device : public nes_bmc_42in1reset_device
+{
+public:
+	// construction/destruction
+	nes_bmc_nc20mb_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
 };


@ -1192,6 +1226,7 @@ DECLARE_DEVICE_TYPE(NES_BMC_CTC09,      nes_bmc_ctc09_device)
 DECLARE_DEVICE_TYPE(NES_BMC_GKA,        nes_bmc_gka_device)
 DECLARE_DEVICE_TYPE(NES_BMC_GKB,        nes_bmc_gkb_device)
 DECLARE_DEVICE_TYPE(NES_BMC_GKCXIN1,    nes_bmc_gkcxin1_device)
+DECLARE_DEVICE_TYPE(NES_BMC_GN91B,      nes_bmc_gn91b_device)
 DECLARE_DEVICE_TYPE(NES_BMC_HP898F,     nes_bmc_hp898f_device)
 DECLARE_DEVICE_TYPE(NES_BMC_K1029,      nes_bmc_k1029_device)
 DECLARE_DEVICE_TYPE(NES_BMC_K3036,      nes_bmc_k3036_device)
@ -1228,6 +1263,7 @@ DECLARE_DEVICE_TYPE(NES_BMC_GOLD150,    nes_bmc_gold150_device)
 DECLARE_DEVICE_TYPE(NES_BMC_GOLD260,    nes_bmc_gold260_device)
 DECLARE_DEVICE_TYPE(NES_BMC_4IN1RESET,  nes_bmc_4in1reset_device)
 DECLARE_DEVICE_TYPE(NES_BMC_42IN1RESET, nes_bmc_42in1reset_device)
+DECLARE_DEVICE_TYPE(NES_BMC_NC20MB,     nes_bmc_nc20mb_device)
 DECLARE_DEVICE_TYPE(NES_BMC_LC160,      nes_bmc_lc160_device)
 DECLARE_DEVICE_TYPE(NES_BMC_TH22913,    nes_bmc_th22913_device)

--- a/src/devices/bus/nes/nes_carts.cpp
+++ b/src/devices/bus/nes/nes_carts.cpp
@ -387,6 +387,7 @@ void nes_cart(device_slot_interface &device)
 	device.option_add_internal("bmc_gka",          NES_BMC_GKA);
 	device.option_add_internal("bmc_gkb",          NES_BMC_GKB);
 	device.option_add_internal("bmc_gkcxin1",      NES_BMC_GKCXIN1);
+	device.option_add_internal("bmc_gn91b",        NES_BMC_GN91B);
 	device.option_add_internal("bmc_hp898f",       NES_BMC_HP898F);
 	device.option_add_internal("bmc_k1029",        NES_BMC_K1029);
 	device.option_add_internal("bmc_k3006",        NES_BMC_K3006);
@ -426,6 +427,7 @@ void nes_cart(device_slot_interface &device)
 	device.option_add_internal("bmc_th22913",      NES_BMC_TH22913);    // mapper 63
 	device.option_add_internal("bmc_reset4",       NES_BMC_4IN1RESET);  // mapper 60 with 64k prg and 32k chr
 	device.option_add_internal("bmc_reset42",      NES_BMC_42IN1RESET); // mapper 233
+	device.option_add_internal("bmc_nc20mb",       NES_BMC_NC20MB);
 	device.option_add_internal("bmc_lc160",        NES_BMC_LC160);
 	device.option_add_internal("resetsxrom",       NES_RESETSXROM);
 // misc multigame cart MMC3 clone boards
--- a/src/devices/bus/nes/nes_ines.hxx
+++ b/src/devices/bus/nes/nes_ines.hxx
@ -466,9 +466,9 @@ static const nes_mmc mmc_list[] =
 	// 428 a couple multicarts
 	// 429 Unused
 	// 430 Unused
-	// 431 Realtec GN-91B
+	{ 431, BMC_GN91B },
 	// 432 Realtec 8090
-	// 433 NC-20MB 20 in 1 (CA-006)
+	{ 433, BMC_NC20MB },
 	// 434 S-009
 	{ 435, NTDEC_2746 },
 	// 436...442 Unused
--- a/src/devices/bus/nes/nes_pcb.hxx
+++ b/src/devices/bus/nes/nes_pcb.hxx
@ -268,6 +268,7 @@ static const nes_pcb pcb_list[] =
 	{ "bmc_gka",          BMC_GKA },
 	{ "bmc_gkb",          BMC_GKB },
 	{ "bmc_gkcxin1",      BMC_GKCXIN1 },
+	{ "bmc_gn91b",        BMC_GN91B },
 	{ "bmc_hp898f",       BMC_HP898F },
 	{ "bmc_k1029",        BMC_K1029 },
 	{ "bmc_k3006",        BMC_K3006 },
@ -334,6 +335,7 @@ static const nes_pcb pcb_list[] =
 	{ "bmc_th22913",      BMC_TH22913 },
 	{ "bmc_reset4",       BMC_4IN1RESET },
 	{ "bmc_reset42",      BMC_42IN1RESET },
+	{ "bmc_nc20mb",       BMC_NC20MB },
 	{ "bmc_lc160",        BMC_LITTLECOM160 },
 	{ "jncota_kt1001",    JNCOTA_KT1001 },
 	{ "jyc_a",            JYCOMPANY_A },
--- a/src/devices/bus/nes/nes_slot.h
+++ b/src/devices/bus/nes/nes_slot.h
@ -94,10 +94,11 @@ enum
 	BMC_72IN1, BMC_SUPER_42IN1, BMC_76IN1,
 	BMC_31IN1, BMC_22GAMES, BMC_20IN1,
 	BMC_70IN1, BMC_500IN1, BMC_800IN1, BMC_1200IN1,
-	BMC_GKA, BMC_GKB, BMC_GKCXIN1, BMC_HP898F, BMC_VT5201, BMC_BENSHIENG,
+	BMC_GKA, BMC_GKB, BMC_GKCXIN1, BMC_GN91B,
+	BMC_HP898F, BMC_VT5201, BMC_BENSHIENG,
 	BMC_60311C, BMC_80013B, BMC_810544C, BMC_830425C,
 	BMC_830928C, BMC_850437C, BMC_970630C,
-	BMC_N32_4IN1, BMC_NT639, BMC_NTD_03,
+	BMC_N32_4IN1, BMC_NC20MB, BMC_NT639, BMC_NTD_03,
 	BMC_EL860947C, BMC_EL861121C, BMC_FK23C, BMC_FK23CA, BMC_JY820845C,
 	BMC_PJOY84, BMC_TH22913, BMC_11160, BMC_G146,
 	BMC_2751, BMC_8157, BMC_00202650,