// license:BSD-3-Clause // copyright-holders:Fabio Priuli #ifndef MAME_BUS_NES_DISKSYS_H #define MAME_BUS_NES_DISKSYS_H #pragma once #include "nxrom.h" #include "imagedev/flopdrv.h" #include "sound/rp2c33_snd.h" // ======================> nes_disksys_device class nes_disksys_device : public nes_nrom_device { public: // construction/destruction nes_disksys_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); virtual uint8_t read_ex(offs_t offset) override; virtual uint8_t read_m(offs_t offset) override; virtual uint8_t read_h(offs_t offset) override; virtual void write_ex(offs_t offset, uint8_t data) override; virtual void write_m(offs_t offset, uint8_t data) override; virtual void write_h(offs_t offset, uint8_t data) override; virtual void disk_flip_side() override; virtual void hblank_irq(int scanline, bool vblank, bool blanked) override; virtual void pcb_reset() override; protected: // device-level overrides virtual void device_start() override; virtual void device_add_mconfig(machine_config &config) override; virtual const tiny_rom_entry *device_rom_region() const override; required_region_ptr m_2c33_rom; private: static void load_proc(device_image_interface &image, bool is_created); static void unload_proc(device_image_interface &image); TIMER_CALLBACK_MEMBER(irq_timer_tick); std::unique_ptr m_fds_data; // here, we store a copy of the disk required_device m_disk; required_device m_sound; emu_timer *irq_timer; void load_disk(device_image_interface &image); void unload_disk(device_image_interface &image); uint16_t m_irq_count, m_irq_count_latch; int m_irq_enable, m_irq_repeat, m_irq_transfer; int m_disk_reg_enable; bool m_sound_en; uint8_t m_fds_motor_on; uint8_t m_fds_door_closed; uint8_t m_fds_current_side; uint32_t m_fds_head_position; uint8_t m_fds_status0; uint8_t m_read_mode; uint8_t m_drive_ready; uint8_t m_fds_sides; int m_fds_last_side; int m_fds_count; }; // device type definition DECLARE_DEVICE_TYPE(NES_DISKSYS, nes_disksys_device) #endif // MAME_BUS_NES_DISKSYS_H