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https://github.com/holub/mame
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bus/nes: Minor fixes and simplifications for several bootlegs. (#9618)
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0kmg
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@ -64614,7 +64614,7 @@ preliminary proto for the PAL version, still running on NTSC systems) or the gfx
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</software>
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<!-- nointro -->
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<software name="decathln">
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<software name="decathln" supported="partial"> <!-- major graphics glitches in javelin and 1500m -->
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<description>Decathlon (Tw)</description>
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<year>1992</year>
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<publisher>Computer & Entertainment</publisher>
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@ -69425,10 +69425,11 @@ Also notice that VRAM & WRAM are probably incorrect for some of these sets, at t
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<software name="fuunsfds">
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<description>Fuuun Shaolin Kyo (Asia, FDS conversion)</description>
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<year>19??</year>
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<publisher>Kaiser</publisher>
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<publisher>Whirlwind Manu</publisher>
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<part name="cart" interface="nes_cart">
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<feature name="slot" value="unl_lh10" />
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<feature name="pcb" value="UNL-LH10" />
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<feature name="mirroring" value="vertical" />
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<dataarea name="prg" size="131072">
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<rom name="fuuun shaolin kyo (fds conversion) (unl).prg" size="131072" crc="120d5a6c" sha1="4c499a857087e6c121522435786792a2e4105ac1" offset="00000" status="baddump" />
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</dataarea>
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@ -197,7 +197,7 @@ nes_lg25_device::nes_lg25_device(const machine_config &mconfig, const char *tag,
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{
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}
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nes_lh10_device::nes_lh10_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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nes_lh10_device::nes_lh10_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
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: nes_nrom_device(mconfig, NES_LH10, tag, owner, clock), m_latch(0)
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{
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}
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@ -558,7 +558,6 @@ void nes_lh42_device::pcb_reset()
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{
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prg16_89ab(0);
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prg16_cdef(m_prg_chunks - 1); // Last 16K is fixed
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chr8(0, CHRRAM);
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m_latch = 0;
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}
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@ -573,7 +572,6 @@ void nes_lg25_device::pcb_reset()
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{
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prg16_89ab(0);
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prg16_cdef(m_prg_chunks - 1); // Last 16K is fixed
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chr8(0, CHRRAM);
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m_latch = 0;
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}
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@ -582,7 +580,6 @@ void nes_lh10_device::device_start()
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{
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common_start();
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save_item(NAME(m_latch));
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save_item(NAME(m_reg));
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}
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void nes_lh10_device::pcb_reset()
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@ -591,17 +588,13 @@ void nes_lh10_device::pcb_reset()
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prg8_ab(0);
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// 0xc000-0xdfff reads/writes WRAM
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prg8_ef((m_prg_chunks << 1) - 1);
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chr8(0, CHRRAM);
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set_nt_mirroring(PPU_MIRROR_VERT);
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m_latch = 0;
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std::fill(std::begin(m_reg), std::end(m_reg), 0x00);
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}
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void nes_lh51_device::pcb_reset()
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{
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prg32((m_prg_chunks >> 1) - 1); // first 8K is switchable, the rest fixed
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chr8(0, CHRRAM);
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}
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void nes_lh53_device::device_start()
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@ -1707,10 +1700,7 @@ void nes_lh32_device::write_h(offs_t offset, uint8_t data)
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NES 2.0: mapper 418
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In MAME: Preliminary supported.
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TODO: Investigate garbage tiles on bottom half of
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course map screens. This should be car dashboard?
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In MAME: Supported.
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-------------------------------------------------*/
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@ -1718,21 +1708,24 @@ void nes_lh42_device::write_h(offs_t offset, u8 data)
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{
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LOG_MMC(("lh42 write_h, offset: %04x, data: %02x\n", offset, data));
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if (BIT(offset, 0))
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switch (offset & 0x6001)
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{
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switch (m_latch)
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{
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case 1:
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set_nt_mirroring(BIT(data, 0) ? PPU_MIRROR_HORZ : PPU_MIRROR_VERT);
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break;
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case 2:
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case 3:
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prg8_x(m_latch & 1, data & 0x0f);
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break;
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}
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case 0x0000:
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m_latch = data & 0x07;
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break;
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case 0x0001:
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switch (m_latch)
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{
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case 5:
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set_nt_mirroring(BIT(data, 0) ? PPU_MIRROR_HORZ : PPU_MIRROR_VERT);
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break;
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case 6:
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case 7:
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prg8_x(m_latch & 1, data & 0x0f);
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break;
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}
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break;
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}
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else
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m_latch = data & 0x03;
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}
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/*-------------------------------------------------
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@ -1754,21 +1747,24 @@ void nes_lg25_device::write_h(offs_t offset, u8 data)
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{
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LOG_MMC(("lg25 write_h, offset: %04x, data: %02x\n", offset, data));
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if (BIT(offset, 0))
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switch (offset & 0x6001)
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{
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switch (m_latch)
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{
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case 1:
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set_nt_mirroring(BIT(data, 2) ? PPU_MIRROR_VERT : PPU_MIRROR_HORZ);
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break;
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case 2:
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case 3:
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prg8_x(m_latch & 1, data & 0x0f);
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break;
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}
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case 0x0000:
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m_latch = data & 0x07;
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break;
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case 0x0001:
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switch (m_latch)
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{
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case 5:
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set_nt_mirroring(BIT(data, 5) ? PPU_MIRROR_HORZ : PPU_MIRROR_VERT);
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break;
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case 6:
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case 7:
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prg8_x(m_latch & 1, data & 0x0f);
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break;
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}
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break;
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}
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else
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m_latch = data & 0x03;
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}
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/*-------------------------------------------------
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@ -1786,19 +1782,13 @@ void nes_lg25_device::write_h(offs_t offset, u8 data)
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-------------------------------------------------*/
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void nes_lh10_device::update_prg()
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{
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prg8_89(m_reg[6]);
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prg8_ab(m_reg[7]);
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}
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uint8_t nes_lh10_device::read_m(offs_t offset)
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u8 nes_lh10_device::read_m(offs_t offset)
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{
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LOG_MMC(("lh10 read_m, offset: %04x\n", offset));
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return m_prg[(0x0e * 0x2000) + (offset & 0x1fff)];
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return m_prg[(0x0e * 0x2000 + offset) & (m_prg_size - 1)];
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}
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uint8_t nes_lh10_device::read_h(offs_t offset)
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u8 nes_lh10_device::read_h(offs_t offset)
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{
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// LOG_MMC(("lh10 read_h, offset: %04x\n", offset));
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@ -1808,24 +1798,28 @@ uint8_t nes_lh10_device::read_h(offs_t offset)
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return hi_access_rom(offset);
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}
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void nes_lh10_device::write_h(offs_t offset, uint8_t data)
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void nes_lh10_device::write_h(offs_t offset, u8 data)
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{
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LOG_MMC(("lh10 write_h, offset: %04x, data: %02x\n", offset, data));
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if (offset >= 0x4000 && offset < 0x6000)
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m_prgram[offset & 0x1fff] = data;
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else
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switch (offset & 0x6001)
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{
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switch (offset & 0x6001)
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{
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case 0x0000:
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m_latch = data & 7;
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break;
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case 0x0001:
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m_reg[m_latch] = data;
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update_prg();
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break;
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}
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case 0x0000:
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m_latch = data & 7;
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break;
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case 0x0001:
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switch (m_latch)
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{
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case 6:
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case 7:
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prg8_x(m_latch & 1, data & 0x0f);
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break;
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}
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break;
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case 0x4000:
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case 0x4001:
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m_prgram[offset & 0x1fff] = data;
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break;
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}
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}
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@ -1853,11 +1847,9 @@ void nes_lh51_device::write_h(offs_t offset, u8 data)
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switch (offset & 0x6000)
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{
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case 0x0000:
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case 0x1000:
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prg8_89(data & 0x0f);
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break;
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case 0x6000:
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case 0x7000:
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set_nt_mirroring(BIT(data, 3) ? PPU_MIRROR_HORZ : PPU_MIRROR_VERT);
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break;
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}
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@ -534,11 +534,11 @@ class nes_lh10_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_lh10_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
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nes_lh10_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
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virtual uint8_t read_h(offs_t offset) override;
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virtual uint8_t read_m(offs_t offset) override;
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virtual void write_h(offs_t offset, uint8_t data) override;
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virtual u8 read_h(offs_t offset) override;
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virtual u8 read_m(offs_t offset) override;
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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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@ -547,9 +547,7 @@ protected:
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virtual void device_start() override;
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private:
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void update_prg();
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uint8_t m_latch;
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uint8_t m_reg[8];
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u8 m_latch;
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};
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