bus/nes: Added support for multicart board DS-9-27. (#9525)

New working software list additions (nes.xml)
-----------------------------------
Gàishì 190 in 1 [Consolethinks]

hash/nes.xml

@@ -81184,6 +81184,26 @@ be better to redump them properly. -->
 		</part>
 	</software>
 
+	<software name="mc_190a">
+		<description>Gàishì 190 in 1</description>
+		<year>1992</year>
+		<publisher>&lt;pirate&gt;</publisher>
+		<info name="alt_title" value="1992 蓋世 190-in-1"/>
+		<part name="cart" interface="nes_cart">
+			<feature name="slot" value="bmc_ds927" />
+			<feature name="pcb_model" value="DS-9-27" />
+			<dataarea name="prg" size="1048576">
+				<rom name="190-in-1.prg" size="1048576" crc="ef212a73" sha1="8667ab8e727dc340ba082097ca906e85424e7cd3" />
+			</dataarea>
+			<!-- 8k VRAM on cartridge -->
+			<dataarea name="vram" size="8192">
+			</dataarea>
+			<!-- 8k WRAM on cartridge -->
+			<dataarea name="wram" size="8192">
+			</dataarea>
+		</part>
+	</software>
+
 	<software name="mc_1500">
 		<description>1500 in 1</description>
 		<year>199?</year>

src/devices/bus/nes/multigame.cpp

@@ -56,6 +56,7 @@ DEFINE_DEVICE_TYPE(NES_BMC_970630C,    nes_bmc_970630c_device,    "nes_bmc_97063
 DEFINE_DEVICE_TYPE(NES_NTD03,          nes_ntd03_device,          "nes_ntd03",          "NES Cart NTD-03 PCB")
 DEFINE_DEVICE_TYPE(NES_BMC_CTC09,      nes_bmc_ctc09_device,      "nes_bmc_ctc09",      "NES Cart BMC CTC-09 PCB")
 DEFINE_DEVICE_TYPE(NES_BMC_CTC12IN1,   nes_bmc_ctc12in1_device,   "nes_bmc_ctc12in1",   "NES Cart BMC CTC-12IN1 PCB")
+DEFINE_DEVICE_TYPE(NES_BMC_DS927,      nes_bmc_ds927_device,      "nes_bmc_ds927",      "NES Cart BMC DS-9-27 PCB")
 DEFINE_DEVICE_TYPE(NES_BMC_FAM250,     nes_bmc_fam250_device,     "nes_bmc_fam250",     "NES Cart BMC FAM250 PCB")
 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")
@@ -239,6 +240,11 @@ nes_bmc_ctc09_device::nes_bmc_ctc09_device(const machine_config &mconfig, const
 {
 }
 
+nes_bmc_ds927_device::nes_bmc_ds927_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+	: nes_nrom_device(mconfig, NES_BMC_DS927, tag, owner, clock), m_latch(0), m_mode(0)
+{
+}
+
 nes_bmc_gka_device::nes_bmc_gka_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
 	: nes_nrom_device(mconfig, NES_BMC_GKA, tag, owner, clock)
 {
@@ -761,6 +767,24 @@ void nes_bmc_ctc09_device::pcb_reset()
 // contents?). Soft reset can similarly crash the main menu (BTANB?).
 }
 
+void nes_bmc_ds927_device::device_start()
+{
+	common_start();
+	save_item(NAME(m_latch));
+	save_item(NAME(m_mode));
+}
+
+void nes_bmc_ds927_device::pcb_reset()
+{
+	assert(m_prgram.size() >= 0x2000);
+
+	prg16_89ab(0);
+	prg16_cdef(0);
+
+	m_latch = 0;
+	m_mode = 0;
+}
+
 void nes_bmc_gka_device::device_start()
 {
 	common_start();
@@ -1858,6 +1882,73 @@ void nes_bmc_ctc09_device::write_h(offs_t offset, u8 data)
 		chr8(data & 0x0f, CHRROM);
 }
 
+/*-------------------------------------------------
+
+ Board DS-9-27
+
+ Games: 190 in 1
+
+ Bizarro board of mostly simple games that has
+ 8K of WRAM that is mappable, with mirroring in
+ NROM128 mode, to anywhere in upper memory.
+
+ NES 2.0: mapper 452
+
+ In MAME: Supported.
+
+ -------------------------------------------------*/
+
+u8 nes_bmc_ds927_device::read_h(offs_t offset)
+{
+// LOG_MMC(("bmc_ds927 read_h, offset: %04x\n", offset));
+
+	int bits = m_mode == 1 ? 1 : 2;
+
+	if (BIT(offset, 13, bits) == BIT(m_latch, 4, bits))
+		return m_prgram[offset & 0x1fff];
+
+	return hi_access_rom(offset);
+}
+
+void nes_bmc_ds927_device::write_h(offs_t offset, u8 data)
+{
+	LOG_MMC(("bmc_ds927 write_h, offset: %04x, data: %02x\n", offset, data));
+
+	if (offset < 0x6000)
+	{
+		m_latch = data;
+		m_mode = bitswap<2>(data, 3, 1);
+
+		int bank = BIT(offset, 1, 7);
+
+		switch (m_mode)
+		{
+			case 0:
+				prg16_89ab(bank >> 1);
+				prg16_cdef(0);
+				break;
+			case 1:
+				for (int i = 0; i < 4; i++)
+					prg8_x(i, bank);
+				break;
+			case 2:
+			case 3:
+				prg8_89(bank);
+				prg8_ab(bank | 1);
+				prg8_cd(bank | 2);
+				prg8_ef(bank | 3 | (data & 0x04));
+				break;
+		}
+	}
+
+	set_nt_mirroring(BIT(data, 0) ? PPU_MIRROR_HORZ : PPU_MIRROR_VERT);
+
+	int bits = m_mode == 1 ? 1 : 2;
+
+	if (BIT(offset, 13, bits) == BIT(m_latch, 4, bits))
+		m_prgram[offset & 0x1fff] = data;
+}
+
 /*-------------------------------------------------
 
  Board BMC-GKA

src/devices/bus/nes/multigame.h

@@ -397,6 +397,28 @@ class nes_bmc_ctc09_device : public nes_nrom_device
 };
 
 
+// ======================> nes_bmc_ds927_device
+
+class nes_bmc_ds927_device : public nes_nrom_device
+{
+public:
+	// construction/destruction
+	nes_bmc_ds927_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+
+	virtual u8 read_h(offs_t offset) override;
+	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, m_mode;
+};
+
+
 // ======================> nes_bmc_gka_device
 
 class nes_bmc_gka_device : public nes_nrom_device
@@ -1322,6 +1344,7 @@ DECLARE_DEVICE_TYPE(NES_BMC_970630C,    nes_bmc_970630c_device)
 DECLARE_DEVICE_TYPE(NES_NTD03,          nes_ntd03_device)
 DECLARE_DEVICE_TYPE(NES_BMC_CTC09,      nes_bmc_ctc09_device)
 DECLARE_DEVICE_TYPE(NES_BMC_CTC12IN1,   nes_bmc_ctc12in1_device)
+DECLARE_DEVICE_TYPE(NES_BMC_DS927,      nes_bmc_ds927_device)
 DECLARE_DEVICE_TYPE(NES_BMC_FAM250,     nes_bmc_fam250_device)
 DECLARE_DEVICE_TYPE(NES_BMC_GKA,        nes_bmc_gka_device)
 DECLARE_DEVICE_TYPE(NES_BMC_GKB,        nes_bmc_gkb_device)

src/devices/bus/nes/nes_carts.cpp

@@ -398,6 +398,7 @@ void nes_cart(device_slot_interface &device)
 	device.option_add_internal("ntd03",            NES_NTD03);
 	device.option_add_internal("bmc_ctc09",        NES_BMC_CTC09);
 	device.option_add_internal("bmc_ctc12in1",     NES_BMC_CTC12IN1);
+	device.option_add_internal("bmc_ds927",        NES_BMC_DS927);
 	device.option_add_internal("bmc_fam250",       NES_BMC_FAM250);
 	device.option_add_internal("bmc_gka",          NES_BMC_GKA);
 	device.option_add_internal("bmc_gkb",          NES_BMC_GKB);

src/devices/bus/nes/nes_ines.hxx

@@ -483,7 +483,13 @@ static const nes_mmc mmc_list[] =
 	// 445 DG574B MMC3-compatible multicart
 	// 446 Mindkids SMD172B_FPGA board
 	// 447 VRC4-based KL-06 multicart
-	// 448...511 Unused
+	// 448 VRC4-based 830768C multicart
+	// 449 Super Games King multicart
+	// 450 VRC2-based YY841157C multicart
+	// 451 homebrew Haratyler HP/MP
+	{ 452, BMC_DS927 },
+	// 453 Realtec 8042
+	// 454...511 Unused
 	// 512 probably the correct MMC3 clone for chuugokt in nes.xml
 	{ 513, SACHEN_SA9602B },
 	// 514 seems to be for skaraok, currently set to UNKNOWN in nes.xml

src/devices/bus/nes/nes_pcb.hxx

@@ -278,6 +278,7 @@ static const nes_pcb pcb_list[] =
 	{ "ntd03",            BMC_NTD_03 },
 	{ "bmc_ctc09",        BMC_CTC09 },
 	{ "bmc_ctc12in1",     BMC_CTC_12IN1 },
+	{ "bmc_ds927",        BMC_DS927 },
 	{ "bmc_fam250",       BMC_FAM250 },
 	{ "bmc_gka",          BMC_GKA },
 	{ "bmc_gkb",          BMC_GKB },

src/devices/bus/nes/nes_slot.h

@@ -95,7 +95,7 @@ enum
 	BMC_72IN1, BMC_SUPER_42IN1, BMC_76IN1,
 	BMC_31IN1, BMC_22GAMES, BMC_20IN1, BMC_5IN1_1993,
 	BMC_70IN1, BMC_500IN1, BMC_800IN1, BMC_1200IN1,
-	BMC_GKA, BMC_GKB, BMC_GKCXIN1, BMC_GN91B, BMC_GOLD260,
+	BMC_DS927, BMC_GKA, BMC_GKB, BMC_GKCXIN1, BMC_GN91B, BMC_GOLD260,
 	BMC_HP898F, BMC_VT5201, BMC_BENSHIENG,
 	BMC_CTC09, BMC_CTC_12IN1, BMC_60311C, BMC_80013B, BMC_810544C, BMC_82AB,
 	BMC_830425C, BMC_830506C, BMC_830928C, BMC_850437C, BMC_891227, BMC_970630C,

src/mame/machine/nes.cpp

@@ -89,6 +89,7 @@ void nes_state::machine_start()
 			BMC_800IN1,
 			BMC_8157,
 			BMC_970630C,
+			BMC_DS927,
 			BMC_KC885,
 			BMC_TELETUBBIES,
 			BMC_VT5201,