mirror of
https://github.com/holub/mame
synced 2025-04-21 07:52:35 +03:00
vsnes.cpp: Various fixes and cleanups. (#9265)
- Fixed size and mirroring of RAM. Correctly share shared RAM only. Shared RAM is also now properly NVRAM (Wrecking Crew saves high scores, etc). - Removed spurious "extra RAM" installed in a couple spots. - Added coin read/write address mirroring. - Renamed "mapper 68" to Sunsoft-3, the chip on Platoon's board. Fixed its write masking. - Implemented proper strobe behavior for joystick read/writes. - Removed now unnecessary lightgun-specific read function and unused variables.
This commit is contained in:
0kmg
GitHub
parent
da9bf2ddb0
commit
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@ -198,24 +198,25 @@ void vsnes_state::vsnes_coin_counter_1_w(uint8_t data)
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void vsnes_state::vsnes_cpu1_map(address_map &map)
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{
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map(0x0000, 0x07ff).mirror(0x1800).ram().share("work_ram");
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map(0x0000, 0x07ff).mirror(0x1800).ram();
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map(0x2000, 0x3fff).rw(m_ppu1, FUNC(ppu2c0x_device::read), FUNC(ppu2c0x_device::write));
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map(0x4014, 0x4014).w(FUNC(vsnes_state::sprite_dma_0_w));
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map(0x4016, 0x4016).rw(FUNC(vsnes_state::vsnes_in0_r), FUNC(vsnes_state::vsnes_in0_w));
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map(0x4017, 0x4017).r(FUNC(vsnes_state::vsnes_in1_r)); /* IN1 - input port 2 / PSG second control register */
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map(0x4020, 0x4020).rw(FUNC(vsnes_state::vsnes_coin_counter_r), FUNC(vsnes_state::vsnes_coin_counter_w));
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map(0x6000, 0x7fff).ram();
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map(0x4020, 0x4020).mirror(0x1fdf).rw(FUNC(vsnes_state::vsnes_coin_counter_r), FUNC(vsnes_state::vsnes_coin_counter_w));
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map(0x6000, 0x67ff).mirror(0x1800).ram().share("nvram");
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map(0x8000, 0xffff).rom();
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}
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void vsnes_state::vsnes_cpu2_map(address_map &map)
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{
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map(0x0000, 0x07ff).mirror(0x1800).ram().share("work_ram_1");
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map(0x0000, 0x07ff).mirror(0x1800).ram();
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map(0x2000, 0x3fff).rw(m_ppu2, FUNC(ppu2c0x_device::read), FUNC(ppu2c0x_device::write));
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map(0x4014, 0x4014).w(FUNC(vsnes_state::sprite_dma_1_w));
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map(0x4016, 0x4016).rw(FUNC(vsnes_state::vsnes_in0_1_r), FUNC(vsnes_state::vsnes_in0_1_w));
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map(0x4017, 0x4017).r(FUNC(vsnes_state::vsnes_in1_1_r)); /* IN1 - input port 2 / PSG second control register */
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map(0x4020, 0x4020).w(FUNC(vsnes_state::vsnes_coin_counter_1_w));
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map(0x4020, 0x4020).mirror(0x1fdf).w(FUNC(vsnes_state::vsnes_coin_counter_1_w));
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map(0x6000, 0x67ff).mirror(0x1800).ram().share("nvram");
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map(0x8000, 0xffff).rom();
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}
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@ -273,13 +274,13 @@ void vsnes_state::vssmbbl_sn_w(offs_t offset, uint8_t data)
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// the bootleg still makes writes to the PSG addresses, it seems the Z80 should interpret them to play the sounds
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void vsnes_state::vsnes_cpu1_bootleg_map(address_map &map)
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{
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map(0x0000, 0x07ff).mirror(0x1800).ram().share("work_ram");
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map(0x0000, 0x07ff).mirror(0x0800).ram();
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map(0x2000, 0x3fff).rw(m_ppu1, FUNC(ppu2c0x_device::read), FUNC(ppu2c0x_device::write));
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map(0x4000, 0x400f).w(FUNC(vsnes_state::bootleg_sound_write));
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map(0x4016, 0x4016).rw(FUNC(vsnes_state::vsnes_in0_r), FUNC(vsnes_state::vsnes_in0_w));
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map(0x4017, 0x4017).r(FUNC(vsnes_state::vsnes_in1_r)); /* IN1 - input port 2 / PSG second control register */
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map(0x4020, 0x4020).w(FUNC(vsnes_state::vsnes_coin_counter_w));
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map(0x6000, 0x7fff).ram();
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map(0x6000, 0x67ff).mirror(0x0800).ram();
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map(0x8000, 0xffff).rom();
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}
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@ -299,7 +300,7 @@ void vsnes_state::vsnes_cpu1_bootleg_map(address_map &map)
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void vsnes_state::vsnes_bootleg_z80_map(address_map &map)
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{
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map(0x0000, 0x1fff).rom().region("sub", 0);
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map(0x2000, 0x23ff).ram();
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map(0x2000, 0x27ff).ram();
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map(0x4000, 0x5fff).r(FUNC(vsnes_state::vsnes_bootleg_z80_data_r)); // read in IRQ & NMI
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map(0x6000, 0x7fff).rw(FUNC(vsnes_state::vsnes_bootleg_z80_address_r), FUNC(vsnes_state::vssmbbl_sn_w));
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@ -470,7 +471,7 @@ static INPUT_PORTS_START( vsnes_zapper )
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PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_UNUSED )
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PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_UNUSED )
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PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNUSED )
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PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED )
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PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED ) // low 6 bits always read 0b010000
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PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED )
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PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNUSED ) /* sprite hit */
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PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_BUTTON1 ) /* gun trigger */
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@ -1733,6 +1734,8 @@ void vsnes_state::vsnes(machine_config &config)
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MCFG_MACHINE_RESET_OVERRIDE(vsnes_state,vsnes)
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MCFG_MACHINE_START_OVERRIDE(vsnes_state,vsnes)
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NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0);
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/* video hardware */
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screen_device &screen1(SCREEN(config, "screen1", SCREEN_TYPE_RASTER));
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screen1.set_raw(N2A03_NTSC_XTAL / 4, 341, 0, VISIBLE_SCREEN_WIDTH, ppu2c0x_device::NTSC_SCANLINES_PER_FRAME, 0, VISIBLE_SCREEN_HEIGHT);
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@ -1797,11 +1800,13 @@ void vsnes_state::vsdual(machine_config &config)
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n2a03_device &subcpu(N2A03(config, m_subcpu, NTSC_APU_CLOCK));
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subcpu.set_addrmap(AS_PROGRAM, &vsnes_state::vsnes_cpu2_map);
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MCFG_MACHINE_RESET_OVERRIDE(vsnes_state,vsdual)
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MCFG_MACHINE_RESET_OVERRIDE(vsnes_state,vsnes)
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MCFG_MACHINE_START_OVERRIDE(vsnes_state,vsdual)
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config.set_default_layout(layout_dualhsxs);
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NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0);
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screen_device &screen1(SCREEN(config, "screen1", SCREEN_TYPE_RASTER));
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screen1.set_raw(N2A03_NTSC_XTAL / 4, 341, 0, VISIBLE_SCREEN_WIDTH, ppu2c0x_device::NTSC_SCANLINES_PER_FRAME, 0, VISIBLE_SCREEN_HEIGHT);
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screen1.set_screen_update("ppu1", FUNC(ppu2c0x_device::screen_update));
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@ -1,6 +1,7 @@
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// license:BSD-3-Clause
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// copyright-holders:Pierpaolo Prazzoli
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#include "machine/nvram.h"
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#include "sound/sn76496.h"
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#include "video/ppu2c0x.h"
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@ -15,8 +16,7 @@ public:
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, m_ppu2(*this, "ppu2")
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, m_sn1(*this, "sn1")
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, m_sn2(*this, "sn2")
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, m_work_ram(*this, "work_ram")
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, m_work_ram_1(*this, "work_ram_1")
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, m_nvram(*this, "nvram")
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, m_gfx1_rom(*this, "gfx1")
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, m_chr_banks(*this, "chr%u", 0U)
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, m_bank_vrom(*this, "vrom%u", 0U)
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@ -56,8 +56,7 @@ private:
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optional_device<sn76489_device> m_sn1;
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optional_device<sn76489_device> m_sn2;
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required_shared_ptr<uint8_t> m_work_ram;
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optional_shared_ptr<uint8_t> m_work_ram_1;
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optional_device<nvram_device> m_nvram;
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optional_memory_region m_gfx1_rom;
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memory_bank_array_creator<8> m_chr_banks;
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@ -73,7 +72,6 @@ private:
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void vsnes_in0_1_w(uint8_t data);
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uint8_t vsnes_in0_1_r();
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uint8_t vsnes_in1_1_r();
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uint8_t gun_in0_r();
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void vsnormal_vrom_banking(uint8_t data);
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void gun_in0_w(uint8_t data);
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void vskonami_rom_banking(offs_t offset, uint8_t data);
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@ -87,7 +85,7 @@ private:
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uint8_t supxevs_read_prot_3_r();
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uint8_t supxevs_read_prot_4_r();
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uint8_t tko_security_r(offs_t offset);
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void mapper68_rom_banking(offs_t offset, uint8_t data);
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void sunsoft3_rom_banking(offs_t offset, uint8_t data);
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void set_bnglngby_irq_w(uint8_t data);
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uint8_t set_bnglngby_irq_r();
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void vsdual_vrom_banking_main(uint8_t data);
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@ -97,7 +95,6 @@ private:
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DECLARE_MACHINE_START(vsnes);
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DECLARE_MACHINE_RESET(vsnes);
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DECLARE_MACHINE_START(vsdual);
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DECLARE_MACHINE_RESET(vsdual);
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DECLARE_MACHINE_START(bootleg);
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void v_set_videorom_bank( int start, int count, int vrom_start_bank );
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@ -115,16 +112,13 @@ private:
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int m_coin;
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int m_do_vrom_bank;
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int m_input_latch[4];
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int m_sound_fix;
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uint8_t m_last_bank;
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int m_input_strobe[2];
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std::unique_ptr<uint8_t[]> m_vram;
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std::unique_ptr<uint8_t[]> m_extraram;
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uint8_t* m_vrom[2];
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std::unique_ptr<uint8_t[]> m_nt_ram[2];
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memory_bank_array_creator<8> m_bank_vrom;
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uint32_t m_vrom_size[2];
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int m_vrom_banks;
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int m_zapstore;
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int m_old_bank;
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int m_drmario_shiftreg;
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int m_drmario_shiftcount;
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@ -33,98 +33,81 @@ Nintendo VS UniSystem and DualSystem - (c) 1984 Nintendo of America
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void vsnes_state::vsnes_in0_w(uint8_t data)
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{
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/* Toggling bit 0 high then low resets both controllers */
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if (data & 1)
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if (m_input_strobe[0] & ~data & 1)
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{
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/* load up the latches */
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m_input_latch[0] = ioport("IN0")->read();
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m_input_latch[1] = ioport("IN1")->read();
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}
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}
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uint8_t vsnes_state::gun_in0_r()
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{
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int ret = (m_input_latch[0]) & 1;
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/* shift */
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m_input_latch[0] >>= 1;
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ret |= ioport("COINS")->read(); /* merge coins, etc */
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ret |= (ioport("DSW0")->read() & 3) << 3; /* merge 2 dipswitches */
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/* The gun games expect a 1 returned on every 5th read after sound_fix is reset*/
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/* Info Supplied by Ben Parnell <xodnizel@home.com> of FCE Ultra fame */
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if (m_sound_fix == 4)
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{
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ret = 1;
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}
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m_sound_fix++;
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return ret;
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m_input_strobe[0] = data;
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}
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uint8_t vsnes_state::vsnes_in0_r()
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{
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int ret = (m_input_latch[0]) & 1;
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if (m_input_strobe[0] & 1)
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m_input_latch[0] = ioport("IN0")->read();
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/* shift */
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int ret = m_input_latch[0] & 1;
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m_input_latch[0] >>= 1;
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ret |= ioport("COINS")->read(); /* merge coins, etc */
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ret |= (ioport("DSW0")->read() & 3) << 3; /* merge 2 dipswitches */
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return ret;
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}
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uint8_t vsnes_state::vsnes_in1_r()
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{
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int ret = (m_input_latch[1]) & 1;
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if (m_input_strobe[0] & 1)
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m_input_latch[1] = ioport("IN1")->read();
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int ret = m_input_latch[1] & 1;
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m_input_latch[1] >>= 1;
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ret |= ioport("DSW0")->read() & ~3; /* merge the rest of the dipswitches */
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/* shift */
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m_input_latch[1] >>= 1;
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return ret;
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}
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void vsnes_state::vsnes_in0_1_w(uint8_t data)
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{
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/* Toggling bit 0 high then low resets both controllers */
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if (data & 1)
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if (m_input_strobe[1] & ~data & 1)
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{
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/* load up the latches */
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m_input_latch[2] = ioport("IN2")->read();
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m_input_latch[3] = ioport("IN3")->read();
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}
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m_input_strobe[1] = data;
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}
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uint8_t vsnes_state::vsnes_in0_1_r()
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{
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int ret = (m_input_latch[2]) & 1;
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if (m_input_strobe[1] & 1)
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m_input_latch[2] = ioport("IN2")->read();
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/* shift */
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int ret = m_input_latch[2] & 1;
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m_input_latch[2] >>= 1;
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ret |= ioport("COINS2")->read(); /* merge coins, etc */
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ret |= (ioport("DSW1")->read() & 3) << 3; /* merge 2 dipswitches */
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return ret;
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}
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uint8_t vsnes_state::vsnes_in1_1_r()
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{
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int ret = (m_input_latch[3]) & 1;
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if (m_input_strobe[1] & 1)
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m_input_latch[3] = ioport("IN3")->read();
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int ret = m_input_latch[3] & 1;
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m_input_latch[3] >>= 1;
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ret |= ioport("DSW1")->read() & ~3; /* merge the rest of the dipswitches */
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/* shift */
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m_input_latch[3] >>= 1;
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return ret;
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}
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/*************************************
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@ -135,24 +118,9 @@ uint8_t vsnes_state::vsnes_in1_1_r()
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MACHINE_RESET_MEMBER(vsnes_state,vsnes)
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{
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m_last_bank = 0xff;
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m_sound_fix = 0;
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m_input_latch[0] = m_input_latch[1] = 0;
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m_input_latch[2] = m_input_latch[3] = 0;
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}
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/*************************************
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*
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* Init machine
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*
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*************************************/
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MACHINE_RESET_MEMBER(vsnes_state,vsdual)
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{
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m_input_latch[0] = m_input_latch[1] = 0;
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m_input_latch[2] = m_input_latch[3] = 0;
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m_input_strobe[0] = m_input_strobe[1] = 0;
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}
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/*************************************
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@ -163,8 +131,6 @@ MACHINE_RESET_MEMBER(vsnes_state,vsdual)
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void vsnes_state::v_set_videorom_bank(int start, int count, int vrom_start_bank)
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{
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int i;
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assert(start + count <= 8);
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vrom_start_bank &= (m_vrom_banks - 1);
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@ -172,7 +138,7 @@ void vsnes_state::v_set_videorom_bank(int start, int count, int vrom_start_bank)
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/* bank_size_in_kb is used to determine how large the "bank" parameter is */
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/* count determines the size of the area mapped */
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for (i = 0; i < count; i++)
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for (int i = 0; i < count; i++)
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{
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m_chr_banks[i + start]->set_entry(vrom_start_bank + i);
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}
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@ -181,7 +147,6 @@ void vsnes_state::v_set_videorom_bank(int start, int count, int vrom_start_bank)
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MACHINE_START_MEMBER(vsnes_state,vsnes)
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{
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address_space &ppu1_space = m_ppu1->space(AS_PROGRAM);
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int i;
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/* establish nametable ram */
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m_nt_ram[0] = std::make_unique<uint8_t[]>(0x1000);
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@ -207,7 +172,7 @@ MACHINE_START_MEMBER(vsnes_state,vsnes)
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/* DRIVER_INIT is called first - means we can handle this different for VRAM games! */
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if (m_vrom[0] != nullptr)
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{
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for (i = 0; i < 8; i++)
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for (int i = 0; i < 8; i++)
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{
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ppu1_space.install_read_bank(0x0400 * i, 0x0400 * i + 0x03ff, m_chr_banks[i]);
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m_chr_banks[i]->configure_entries(0, m_vrom_banks, m_vrom[0], 0x400);
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@ -305,7 +270,7 @@ void vsnes_state::gun_in0_w(uint8_t data)
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}
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/* here we do things a little different */
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if (data & 1)
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if (m_input_strobe[0] & ~data & 1)
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{
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/* load up the latches */
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m_input_latch[0] = ioport("IN0")->read();
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@ -361,19 +326,13 @@ void vsnes_state::gun_in0_w(uint8_t data)
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m_input_latch[1] = ioport("IN1")->read();
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}
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if ((m_zapstore & 1) && (!(data & 1)))
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/* reset sound_fix to keep sound from hanging */
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{
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m_sound_fix = 0;
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}
|
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|
||||
m_zapstore = data;
|
||||
m_input_strobe[0] = data;
|
||||
}
|
||||
|
||||
void vsnes_state::init_vsgun()
|
||||
{
|
||||
/* VROM switching is enabled with bit 2 of $4016 */
|
||||
m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0x4016, 0x4016, read8smo_delegate(*this, FUNC(vsnes_state::gun_in0_r)), write8smo_delegate(*this, FUNC(vsnes_state::gun_in0_w)));
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0x4016, 0x4016, write8smo_delegate(*this, FUNC(vsnes_state::gun_in0_w)));
|
||||
m_do_vrom_bank = 1;
|
||||
}
|
||||
|
||||
@ -441,7 +400,7 @@ void vsnes_state::init_vsgshoe()
|
||||
memcpy (&prg[0x08000], &prg[0x12000], 0x2000);
|
||||
|
||||
/* vrom switching is enabled with bit 2 of $4016 */
|
||||
m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0x4016, 0x4016, read8smo_delegate(*this, FUNC(vsnes_state::gun_in0_r)), write8smo_delegate(*this, FUNC(vsnes_state::vsgshoe_gun_in0_w)));
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0x4016, 0x4016, write8smo_delegate(*this, FUNC(vsnes_state::vsgshoe_gun_in0_w)));
|
||||
|
||||
m_do_vrom_bank = 1;
|
||||
}
|
||||
@ -629,11 +588,6 @@ void vsnes_state::init_vs108()
|
||||
|
||||
// 108 chip at $8000-$9fff
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0x8000, 0xffff, write8sm_delegate(*this, FUNC(vsnes_state::vs108_rom_banking)));
|
||||
|
||||
// extra ram at $6000-$7fff
|
||||
m_extraram = std::make_unique<uint8_t[]>(0x2000);
|
||||
save_pointer(NAME(m_extraram.get()), 0x2000);
|
||||
m_maincpu->space(AS_PROGRAM).install_ram(0x6000, 0x7fff, m_extraram.get());
|
||||
}
|
||||
|
||||
/* Vs. RBI Baseball */
|
||||
@ -760,7 +714,7 @@ void vsnes_state::init_vsfdf()
|
||||
{
|
||||
init_vs108();
|
||||
|
||||
m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0x4016, 0x4016, read8smo_delegate(*this, FUNC(vsnes_state::gun_in0_r)), write8smo_delegate(*this, FUNC(vsnes_state::gun_in0_w)));
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0x4016, 0x4016, write8smo_delegate(*this, FUNC(vsnes_state::gun_in0_w)));
|
||||
|
||||
m_do_vrom_bank = 0;
|
||||
}
|
||||
@ -768,28 +722,18 @@ void vsnes_state::init_vsfdf()
|
||||
/**********************************************************************************/
|
||||
/* Platoon rom banking */
|
||||
|
||||
void vsnes_state::mapper68_rom_banking(offs_t offset, uint8_t data)
|
||||
void vsnes_state::sunsoft3_rom_banking(offs_t offset, uint8_t data)
|
||||
{
|
||||
switch (offset & 0x7000)
|
||||
switch (offset & 0x7800)
|
||||
{
|
||||
case 0x0000:
|
||||
v_set_videorom_bank(0, 2, data * 2);
|
||||
|
||||
break;
|
||||
case 0x1000:
|
||||
v_set_videorom_bank(2, 2, data * 2);
|
||||
|
||||
break;
|
||||
case 0x2000:
|
||||
v_set_videorom_bank(4, 2, data * 2);
|
||||
|
||||
break;
|
||||
case 0x3000: /* ok? */
|
||||
v_set_videorom_bank(6, 2, data * 2);
|
||||
|
||||
case 0x0800:
|
||||
case 0x1800:
|
||||
case 0x2800:
|
||||
case 0x3800:
|
||||
v_set_videorom_bank((offset >> 11) & 0x06, 2, data * 2);
|
||||
break;
|
||||
|
||||
case 0x7000:
|
||||
case 0x7800:
|
||||
{
|
||||
uint8_t *prg = memregion("maincpu")->base();
|
||||
memcpy(&prg[0x08000], &prg[0x10000 + data * 0x4000], 0x4000);
|
||||
@ -802,14 +746,14 @@ void vsnes_state::mapper68_rom_banking(offs_t offset, uint8_t data)
|
||||
|
||||
void vsnes_state::init_platoon()
|
||||
{
|
||||
/* when starting a mapper 68 game the first 16K ROM bank in the cart is loaded into $8000
|
||||
/* when starting a mapper 67 game the first 16K ROM bank in the cart is loaded into $8000
|
||||
the LAST 16K ROM bank is loaded into $C000. The last 16K of ROM cannot be swapped. */
|
||||
|
||||
uint8_t *prg = memregion("maincpu")->base();
|
||||
memcpy(&prg[0x08000], &prg[0x10000], 0x4000);
|
||||
memcpy(&prg[0x0c000], &prg[0x2c000], 0x4000);
|
||||
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0x8000, 0xffff, write8sm_delegate(*this, FUNC(vsnes_state::mapper68_rom_banking)));
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0x8000, 0xffff, write8sm_delegate(*this, FUNC(vsnes_state::sunsoft3_rom_banking)));
|
||||
}
|
||||
|
||||
/**********************************************************************************/
|
||||
@ -832,11 +776,6 @@ void vsnes_state::init_bnglngby()
|
||||
{
|
||||
m_maincpu->space(AS_PROGRAM).install_readwrite_handler(0x0231, 0x0231, read8smo_delegate(*this, FUNC(vsnes_state::set_bnglngby_irq_r)), write8smo_delegate(*this, FUNC(vsnes_state::set_bnglngby_irq_w)));
|
||||
|
||||
/* extra ram */
|
||||
m_extraram = std::make_unique<uint8_t[]>(0x2000);
|
||||
save_pointer(NAME(m_extraram.get()), 0x2000);
|
||||
m_maincpu->space(AS_PROGRAM).install_ram(0x6000, 0x7fff, m_extraram.get());
|
||||
|
||||
m_ret = 0;
|
||||
|
||||
/* normal banking */
|
||||
@ -872,15 +811,9 @@ void vsnes_state::vsdual_vrom_banking_sub(uint8_t data)
|
||||
|
||||
void vsnes_state::init_vsdual()
|
||||
{
|
||||
uint8_t *prg = memregion("maincpu")->base();
|
||||
|
||||
/* vrom switching is enabled with bit 2 of $4016 */
|
||||
m_maincpu->space(AS_PROGRAM).install_write_handler(0x4016, 0x4016, write8smo_delegate(*this, FUNC(vsnes_state::vsdual_vrom_banking_main)));
|
||||
m_subcpu->space(AS_PROGRAM).install_write_handler(0x4016, 0x4016, write8smo_delegate(*this, FUNC(vsnes_state::vsdual_vrom_banking_sub)));
|
||||
|
||||
/* shared ram at $6000 */
|
||||
m_maincpu->space(AS_PROGRAM).install_ram(0x6000, 0x7fff, &prg[0x6000]);
|
||||
m_subcpu->space(AS_PROGRAM).install_ram(0x6000, 0x7fff, &prg[0x6000]);
|
||||
}
|
||||
|
||||
/**********************************************************************************/
|
||||
|
||||
Loading…
Reference in New Issue
Block a user