diff options
Diffstat (limited to 'src/devices/bus/msx/slot/fsa1fm.h')
-rw-r--r-- | src/devices/bus/msx/slot/fsa1fm.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/src/devices/bus/msx/slot/fsa1fm.h b/src/devices/bus/msx/slot/fsa1fm.h new file mode 100644 index 00000000000..51028e18311 --- /dev/null +++ b/src/devices/bus/msx/slot/fsa1fm.h @@ -0,0 +1,88 @@ +// license:BSD-3-Clause +// copyright-holders:Wilbert Pol +#ifndef MAME_BUS_MSX_SLOT_FSA1FM_H +#define MAME_BUS_MSX_SLOT_FSA1FM_H + +#pragma once + +#include "slot.h" +#include "machine/i8251.h" +#include "machine/i8255.h" +#include "machine/nvram.h" + + +DECLARE_DEVICE_TYPE(MSX_SLOT_FSA1FM, msx_slot_fsa1fm_device) +DECLARE_DEVICE_TYPE(MSX_SLOT_FSA1FM2, msx_slot_fsa1fm2_device) + + +class msx_slot_fsa1fm2_device : public device_t, public msx_internal_slot_interface +{ +public: + msx_slot_fsa1fm2_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); + + // configuration helpers + void set_rom_start(const char *region, uint32_t offset) { m_rom_region.set_tag(region); m_region_offset = offset; } + +protected: + virtual void device_start() override; + virtual void device_reset() override; + +private: + static constexpr size_t RAM_SIZE = 0x2000; + + template <int Bank> void set_view(); + template <int Bank> void bank_w(u8 data); + u8 bank_r(offs_t offset); + void control_w(u8 data); + + required_memory_region m_rom_region; + memory_bank_array_creator<6> m_bank; + memory_view m_view0; + memory_view m_view1; + memory_view m_view2; + memory_view m_view3; + memory_view m_view4; + memory_view m_view5; + uint32_t m_region_offset; + uint8_t m_selected_bank[6]; + bool m_ram_active[6]; + uint8_t m_control; + std::vector<uint8_t> m_ram; + std::vector<uint8_t> m_empty_bank; +}; + + +class msx_slot_fsa1fm_device : public device_t, public msx_internal_slot_interface +{ +public: + msx_slot_fsa1fm_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock); + + // configuration helpers + void set_rom_start(const char *region, uint32_t offset) { m_rom_region.set_tag(region); m_region_offset = offset; } + +protected: + virtual void device_start() override; + virtual void device_reset() override; + virtual void device_add_mconfig(machine_config &config) override; + virtual ioport_constructor device_input_ports() const override; + +private: + static constexpr size_t SRAM_SIZE = 0x2000; + + void map_bank(); + void i8255_port_a_w(u8 data); + void i8255_port_b_w(u8 data); + u8 i8255_port_c_r(); + + required_device<nvram_device> m_nvram; + required_device<i8251_device> m_i8251; + required_device<i8255_device> m_i8255; + required_ioport m_switch_port; + required_memory_region m_rom_region; + memory_bank_creator m_rombank; + u32 m_region_offset; + std::vector<u8> m_sram; +}; + + +#endif // MAME_BUS_MSX_SLOT_FSA1FM_H |