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msx2_cart.xml: Add FS-SR021 MSX2 Word Processor.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,222 @@ | ||
| // license:BSD-3-Clause | ||
| // copyright-holders:Wilbert Pol | ||
| /*********************************************************************************** | ||
| Emulation of the FS-SR021 MSX2 Word Processor Cartridge. | ||
| TODO: | ||
| - Display of JIS level 1 characters might not be fully correct, the tools do seem to display fine. | ||
| - Unknown how JIS level 2 characters are input/displayed. | ||
| ***********************************************************************************/ | ||
| #include "emu.h" | ||
| #include "fs_sr021.h" | ||
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| namespace { | ||
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| class msx_cart_fs_sr021_device : public device_t, public msx_cart_interface | ||
| { | ||
| public: | ||
| msx_cart_fs_sr021_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) | ||
| : device_t(mconfig, MSX_CART_FS_SR021, tag, owner, clock) | ||
| , msx_cart_interface(mconfig, *this) | ||
| , m_bank(*this, "bank%u", 0U) | ||
| , m_view_0000(*this, "view0000") | ||
| , m_view_2000(*this, "view2000") | ||
| , m_view_4000(*this, "view4000") | ||
| , m_view_6000(*this, "view6000") | ||
| , m_view_8000(*this, "view8000") | ||
| , m_view_a000(*this, "viewa000") | ||
| { } | ||
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| virtual std::error_condition initialize_cartridge(std::string &message) override; | ||
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| protected: | ||
| // device_t implementation | ||
| virtual void device_start() override; | ||
| virtual void device_reset() override; | ||
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| private: | ||
| static constexpr size_t BANK_SIZE = 0x2000; | ||
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| template <int Bank> void bank_w(u8 data); | ||
| template <int Bank> void set_view(); | ||
| void control_w(u8 data); | ||
| u8 bank_r(offs_t offset); | ||
| u8 kanji_r(offs_t offset); | ||
| void kanji_w(offs_t offset, u8 data); | ||
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| memory_bank_array_creator<6> m_bank; | ||
| memory_view m_view_0000; | ||
| memory_view m_view_2000; | ||
| memory_view m_view_4000; | ||
| memory_view m_view_6000; | ||
| memory_view m_view_8000; | ||
| memory_view m_view_a000; | ||
| u8 m_selected_bank[6]; | ||
| u8 m_control; | ||
| u32 m_kanji_latch; | ||
| }; | ||
|
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| void msx_cart_fs_sr021_device::device_start() | ||
| { | ||
| save_item(NAME(m_selected_bank)); | ||
| save_item(NAME(m_control)); | ||
| save_item(NAME(m_kanji_latch)); | ||
| } | ||
|
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| void msx_cart_fs_sr021_device::device_reset() | ||
| { | ||
| m_control = 0; | ||
| m_view_0000.select(0); | ||
| m_view_2000.select(0); | ||
| m_view_4000.select(0); | ||
| m_view_6000.select(0); | ||
| m_view_8000.select(0); | ||
| m_view_a000.select(0); | ||
| m_bank[2]->set_entry(0); | ||
| } | ||
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| std::error_condition msx_cart_fs_sr021_device::initialize_cartridge(std::string &message) | ||
| { | ||
| if (!cart_rom_region()) | ||
| { | ||
| message = "msx_cart_fs_sr021_device: Required region 'rom' was not found."; | ||
| return image_error::INTERNAL; | ||
| } | ||
|
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| if (cart_rom_region()->bytes() != 0x200000) | ||
| { | ||
| message = "msx_cart_fs_sr021_device: Region 'rom' has unsupported size."; | ||
| return image_error::INVALIDLENGTH; | ||
| } | ||
|
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| if (!cart_sram_region()) | ||
| { | ||
| message = "msx_cart_fs_sr021_device: Required region 'sram' was not found."; | ||
| return image_error::INTERNAL; | ||
| } | ||
|
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| if (cart_sram_region()->bytes() != 0x4000) | ||
| { | ||
| message = "msx_cart_fs_sr021_device: Region 'sram' has unsupported size."; | ||
| return image_error::BADSOFTWARE; | ||
| } | ||
|
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| const u32 size = cart_rom_region()->bytes(); | ||
| const u16 banks = size / BANK_SIZE; | ||
|
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| for (int i = 0; i < 6; i++) | ||
| { | ||
| m_bank[i]->configure_entries(0, banks, cart_rom_region()->base(), BANK_SIZE); | ||
| m_bank[i]->configure_entry(0x80, cart_sram_region()->base()); | ||
| m_bank[i]->configure_entry(0x81, cart_sram_region()->base() + BANK_SIZE); | ||
| } | ||
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| page(0)->install_view(0x0000, 0x1fff, m_view_0000); | ||
| m_view_0000[0].install_read_bank(0x0000, 0x1fff, m_bank[0]); | ||
| m_view_0000[1].install_readwrite_bank(0x0000, 0x1fff, m_bank[0]); | ||
| page(0)->install_view(0x2000, 0x3fff, m_view_2000); | ||
| m_view_2000[0].install_read_bank(0x2000, 0x3fff, m_bank[1]); | ||
| m_view_2000[1].install_readwrite_bank(0x2000, 0x3fff, m_bank[1]); | ||
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| page(1)->install_view(0x4000, 0x5fff, m_view_4000); | ||
| m_view_4000[0].install_read_bank(0x4000, 0x5fff, m_bank[2]); | ||
| m_view_4000[1].install_readwrite_bank(0x4000, 0x5fff, m_bank[2]); | ||
| page(1)->install_view(0x6000, 0x7fff, m_view_6000); | ||
| m_view_6000[0].install_read_bank(0x6000, 0x7fff, m_bank[3]); | ||
| m_view_6000[1].install_readwrite_bank(0x6000, 0x7fff, m_bank[3]); | ||
| m_view_6000[2].install_read_bank(0x6000, 0x7fff, m_bank[3]); | ||
| m_view_6000[2].install_read_handler(0x7ff0, 0x7ff5, emu::rw_delegate(*this, FUNC(msx_cart_fs_sr021_device::bank_r))); | ||
| m_view_6000[3].install_readwrite_bank(0x6000, 0x7fff, m_bank[3]); | ||
| m_view_6000[3].install_read_handler(0x7ff0, 0x7ff5, emu::rw_delegate(*this, FUNC(msx_cart_fs_sr021_device::bank_r))); | ||
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| page(2)->install_view(0x8000, 0x9fff, m_view_8000); | ||
| m_view_8000[0].install_read_bank(0x8000, 0x9fff, m_bank[4]); | ||
| m_view_8000[1].install_readwrite_bank(0x8000, 0x9fff, m_bank[4]); | ||
| page(2)->install_view(0xa000, 0xbfff, m_view_a000); | ||
| m_view_a000[0].install_read_bank(0xa000, 0xbfff, m_bank[5]); | ||
| m_view_a000[1].install_readwrite_bank(0xa000, 0xbfff, m_bank[5]); | ||
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| page(1)->install_write_handler(0x6000, 0x6000, emu::rw_delegate(*this, FUNC(msx_cart_fs_sr021_device::bank_w<0>))); // 0000-1fff | ||
| page(1)->install_write_handler(0x6400, 0x6400, emu::rw_delegate(*this, FUNC(msx_cart_fs_sr021_device::bank_w<1>))); // 2000-3fff | ||
| page(1)->install_write_handler(0x6800, 0x6800, emu::rw_delegate(*this, FUNC(msx_cart_fs_sr021_device::bank_w<2>))); // 4000-5fff | ||
| page(1)->install_write_handler(0x6c00, 0x6c00, emu::rw_delegate(*this, FUNC(msx_cart_fs_sr021_device::bank_w<3>))); // 6000-7fff | ||
| page(1)->install_write_handler(0x7000, 0x7000, emu::rw_delegate(*this, FUNC(msx_cart_fs_sr021_device::bank_w<4>))); // 8000-9fff | ||
| page(1)->install_write_handler(0x7800, 0x7800, emu::rw_delegate(*this, FUNC(msx_cart_fs_sr021_device::bank_w<5>))); // a000-bfff | ||
| page(1)->install_write_handler(0x7ff9, 0x7ff9, emu::rw_delegate(*this, FUNC(msx_cart_fs_sr021_device::control_w))); | ||
|
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| // Takes over kanji from base system? | ||
| io_space().install_write_handler(0xd8, 0xd9, emu::rw_delegate(*this, FUNC(msx_cart_fs_sr021_device::kanji_w))); | ||
| io_space().install_read_handler(0xd9, 0xd9, emu::rw_delegate(*this, FUNC(msx_cart_fs_sr021_device::kanji_r))); | ||
|
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| return std::error_condition(); | ||
| } | ||
|
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| template <int Bank> | ||
| void msx_cart_fs_sr021_device::set_view() | ||
| { | ||
| bool ram_active = (m_selected_bank[Bank] >= 0x80 && m_selected_bank[Bank] < 0x82); | ||
| if (Bank == 0) | ||
| m_view_0000.select(ram_active ? 1 : 0); | ||
| if (Bank == 1) | ||
| m_view_2000.select(ram_active ? 1 : 0); | ||
| if (Bank == 2) | ||
| m_view_4000.select(ram_active ? 1 : 0); | ||
| if (Bank == 3) | ||
| m_view_6000.select((BIT(m_control, 2) ? 2 : 0) | (ram_active ? 1 : 0)); | ||
| if (Bank == 4) | ||
| m_view_8000.select(ram_active ? 1 : 0); | ||
| if (Bank == 5) | ||
| m_view_a000.select(ram_active ? 1 : 0); | ||
| } | ||
|
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| template <int Bank> | ||
| void msx_cart_fs_sr021_device::bank_w(u8 data) | ||
| { | ||
| m_selected_bank[Bank] = data; | ||
| m_bank[Bank]->set_entry(data); | ||
| set_view<Bank>(); | ||
| } | ||
|
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| void msx_cart_fs_sr021_device::control_w(u8 data) | ||
| { | ||
| m_control = data; | ||
| set_view<3>(); | ||
| } | ||
|
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| u8 msx_cart_fs_sr021_device::bank_r(offs_t offset) | ||
| { | ||
| return m_selected_bank[offset]; | ||
| } | ||
|
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| u8 msx_cart_fs_sr021_device::kanji_r(offs_t offset) | ||
| { | ||
| u8 result = 0xff; | ||
|
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| u32 latch = bitswap<17>(m_kanji_latch, 4, 3, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 2, 1, 0); | ||
| // This might not be correct, fixes most characters on the menu screen. | ||
| if (!(latch & 0x18000)) | ||
| { | ||
| latch |= 0x40000; | ||
| } | ||
| result = cart_rom_region()->base()[0x100000 | latch]; | ||
|
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| if (!machine().side_effects_disabled()) | ||
| { | ||
| m_kanji_latch = (m_kanji_latch & ~0x1f) | ((m_kanji_latch + 1) & 0x1f); | ||
| } | ||
| return result; | ||
| } | ||
|
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| void msx_cart_fs_sr021_device::kanji_w(offs_t offset, u8 data) | ||
| { | ||
| if (offset) | ||
| m_kanji_latch = (m_kanji_latch & 0x007e0) | ((data & 0x3f) << 11); | ||
| else | ||
| m_kanji_latch = (m_kanji_latch & 0x1f800) | ((data & 0x3f) << 5); | ||
| } | ||
|
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| } // anonymous namespace | ||
|
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| DEFINE_DEVICE_TYPE_PRIVATE(MSX_CART_FS_SR021, msx_cart_interface, msx_cart_fs_sr021_device, "msx_cart_fs_sr021", "MSX Cartridge - FS-SR021") |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| // license:BSD-3-Clause | ||
| // copyright-holders:Wilbert Pol | ||
| #ifndef MAME_BUS_MSX_CART_FS_SR021_H | ||
| #define MAME_BUS_MSX_CART_FS_SR021_H | ||
|
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| #pragma once | ||
|
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| #include "bus/msx/slot/cartridge.h" | ||
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| DECLARE_DEVICE_TYPE(MSX_CART_FS_SR021, msx_cart_interface) | ||
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| #endif // MAME_BUS_MSX_CART_FS_SR021_H |
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