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bus/nes: Improved emulation of N625092-related multi-game cartridges. (#8526)
* Fixes corrupt graphics in multiple games on all seven multi-game carts (including the new addition). * Fixes flickering menu for several cartridges, making them usable. New working software list additions (nes.xml) ----------------------------------- 5000000 in 1 (JPx72) [anonymous]
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0kmg
GitHub
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dfa5b141d6
15
hash/nes.xml
15
hash/nes.xml
@ -80126,6 +80126,21 @@ be better to redump them properly. -->
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</part>
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</software>
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<software name="mc_5m">
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<description>5000000 in 1 (JPx72)</description>
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<year>19??</year>
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<publisher><pirate></publisher>
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<part name="cart" interface="nes_cart">
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<feature name="slot" value="n625092" />
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<dataarea name="prg" size="524288">
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<rom name="5000000-in-1 (jpx72).prg" size="524288" crc="a831426d" sha1="93c6a3eff4c120e6837639af272f3142be5b0e1d" status="baddump" />
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</dataarea>
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<!-- 8k VRAM on cartridge -->
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<dataarea name="vram" size="8192">
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</dataarea>
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</part>
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</software>
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<software name="mc_5spc5">
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<description>5 in 1 (SPC005)</description>
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<year>19??</year>
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@ -145,11 +145,6 @@ nes_kn42_device::nes_kn42_device(const machine_config &mconfig, const char *tag,
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{
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}
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nes_n625092_device::nes_n625092_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: nes_nrom_device(mconfig, NES_N625092, tag, owner, clock), m_latch1(0), m_latch2(0)
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{
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}
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nes_a65as_device::nes_a65as_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: nes_nrom_device(mconfig, NES_A65AS, tag, owner, clock)
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{
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@ -432,6 +427,11 @@ nes_bmc_k1029_device::nes_bmc_k1029_device(const machine_config &mconfig, const
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{
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}
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nes_n625092_device::nes_n625092_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
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: nes_vram_protect_device(mconfig, NES_N625092, tag, owner, clock)
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{
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}
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nes_bmc_th22913_device::nes_bmc_th22913_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
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: nes_vram_protect_device(mconfig, NES_BMC_TH22913, tag, owner, clock)
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{
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@ -530,24 +530,6 @@ void nes_kn42_device::pcb_reset()
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chr8(0, CHRRAM);
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}
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void nes_n625092_device::device_start()
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{
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common_start();
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save_item(NAME(m_latch1));
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save_item(NAME(m_latch2));
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}
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void nes_n625092_device::pcb_reset()
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{
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m_chr_source = m_vrom_chunks ? CHRROM : CHRRAM;
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prg16_89ab(0);
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prg16_cdef(0);
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chr8(0, m_chr_source);
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m_latch1 = 0;
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m_latch2 = 0;
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}
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void nes_a65as_device::device_start()
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{
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common_start();
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@ -1180,6 +1162,21 @@ void nes_bmc_60311c_device::pcb_reset()
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update_banks();
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}
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void nes_n625092_device::device_start()
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{
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nes_vram_protect_device::device_start();
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save_item(NAME(m_latch));
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}
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void nes_n625092_device::pcb_reset()
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{
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nes_vram_protect_device::pcb_reset();
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prg16_89ab(0);
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prg16_cdef(0);
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m_latch[0] = m_latch[1] = 0;
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}
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void nes_bmc_th22913_device::pcb_reset()
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{
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nes_vram_protect_device::pcb_reset();
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@ -1416,56 +1413,6 @@ void nes_kn42_device::write_h(offs_t offset, u8 data)
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prg16_89ab(m_latch | (data & 0x07) << 1 | BIT(data, 4));
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}
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/*-------------------------------------------------
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Bootleg Board N625092
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Games: 400 in 1, 700 in 1, 1000 in 1
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iNES: mapper 221
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In MESS: Supported.
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-------------------------------------------------*/
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void nes_n625092_device::set_prg(uint8_t reg1, uint8_t reg2)
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{
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uint8_t helper1, helper2;
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helper1 = !(reg1 & 0x01) ? reg2 : (reg1 & 0x80) ? reg2 : (reg2 & 0x06) | 0x00;
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helper2 = !(reg1 & 0x01) ? reg2 : (reg1 & 0x80) ? 0x07 : (reg2 & 0x06) | 0x01;
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prg16_89ab(helper1 | ((reg1 & 0x70) >> 1));
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prg16_cdef(helper2 | ((reg1 & 0x70) >> 1));
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}
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void nes_n625092_device::write_h(offs_t offset, uint8_t data)
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{
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LOG_MMC(("n625092 write_h, offset: %04x, data: %02x\n", offset, data));
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if (offset < 0x4000)
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{
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set_nt_mirroring(BIT(data, 0) ? PPU_MIRROR_HORZ : PPU_MIRROR_VERT);
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offset = (offset >> 1) & 0xff;
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if (m_latch1 != offset)
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{
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m_latch1 = offset;
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set_prg(m_latch1, m_latch2);
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}
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}
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else
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{
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offset &= 0x07;
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if (m_latch2 != offset)
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{
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m_latch2 = offset;
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set_prg(m_latch1, m_latch2);
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}
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}
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}
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/*-------------------------------------------------
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Board BMC-A65AS
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@ -3157,6 +3104,42 @@ void nes_bmc_k1029_device::write_h(offs_t offset, u8 data)
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m_vram_protect = BIT(offset, 0) == BIT(offset, 1);
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}
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/*-------------------------------------------------
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Bootleg Board N625092
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Games: 320 in 1, 400 in 1, 700 in 1, 800 in 1,
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1000 in 1, 2000 in 1, 5000000 in 1
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iNES: mapper 221
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In MAME: Supported.
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-------------------------------------------------*/
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void nes_n625092_device::write_h(offs_t offset, u8 data)
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{
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LOG_MMC(("n625092 write_h, offset: %04x, data: %02x\n", offset, data));
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m_latch[BIT(offset, 14)] = offset;
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u8 bank = (m_latch[0] & 0x200) >> 3 | (m_latch[0] & 0xe0) >> 2 | (m_latch[1] & 0x07); // NesDev shows the high bit here, but is it correct? So far no cart is large enough to use this.
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u8 mode = BIT(m_latch[0], 1);
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if (mode && BIT(m_latch[0], 8)) // UNROM mode
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{
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prg16_89ab(bank);
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prg16_cdef(bank | 7);
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}
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else // NROM mode
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{
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prg16_89ab(bank & ~mode);
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prg16_cdef(bank | mode);
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}
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set_nt_mirroring(BIT(m_latch[0], 0) ? PPU_MIRROR_HORZ : PPU_MIRROR_VERT);
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m_vram_protect = BIT(m_latch[1], 3);
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}
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/*-------------------------------------------------
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BMC-TH2291-3, BMC-CH-011
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@ -137,28 +137,6 @@ private:
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};
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// ======================> nes_n625092_device
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class nes_n625092_device : public nes_nrom_device
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{
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public:
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// construction/destruction
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nes_n625092_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
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virtual void write_h(offs_t offset, uint8_t data) override;
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virtual void pcb_reset() override;
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protected:
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// device-level overrides
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virtual void device_start() override;
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private:
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void set_prg(uint8_t reg1, uint8_t reg2);
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uint8_t m_latch1, m_latch2;
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};
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// ======================> nes_a65as_device
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class nes_a65as_device : public nes_nrom_device
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@ -1166,6 +1144,27 @@ public:
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};
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// ======================> nes_n625092_device
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class nes_n625092_device : public nes_vram_protect_device
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{
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public:
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// construction/destruction
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nes_n625092_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
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virtual void write_h(offs_t offset, u8 data) override;
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virtual void pcb_reset() override;
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protected:
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// device-level overrides
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virtual void device_start() override;
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private:
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u16 m_latch[2];
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};
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// ======================> nes_bmc_th22913_device
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class nes_bmc_th22913_device : public nes_vram_protect_device
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