// license:BSD-3-Clause // copyright-holders:Wilbert Pol, Miodrag Milanovic #ifndef MAME_BUS_ISA_MDA_H #define MAME_BUS_ISA_MDA_H #pragma once #include "isa.h" #include "machine/pc_lpt.h" #include "video/mc6845.h" #include "emupal.h" //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> isa8_mda_device class isa8_mda_device : public device_t, public device_isa8_card_interface { public: friend class isa8_hercules_device; // construction/destruction isa8_mda_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); virtual DECLARE_READ8_MEMBER(io_read); virtual DECLARE_WRITE8_MEMBER(io_write); virtual DECLARE_READ8_MEMBER(status_r); virtual DECLARE_WRITE8_MEMBER(mode_control_w); DECLARE_WRITE_LINE_MEMBER(hsync_changed); DECLARE_WRITE_LINE_MEMBER(vsync_changed); virtual MC6845_UPDATE_ROW( crtc_update_row ); protected: isa8_mda_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock); // device-level overrides virtual void device_start() override; virtual void device_reset() override; // optional information overrides virtual void device_add_mconfig(machine_config &config) override; virtual const tiny_rom_entry *device_rom_region() const override; required_device m_crtc; optional_device m_lpt; private: WRITE_LINE_MEMBER(pc_cpu_line); MC6845_UPDATE_ROW( mda_text_inten_update_row ); MC6845_UPDATE_ROW( mda_text_blink_update_row ); public: int m_framecnt; uint8_t m_mode_control; int m_update_row_type; uint8_t *m_chr_gen; uint8_t m_vsync; uint8_t m_hsync; std::vector m_videoram; uint8_t m_pixel; required_device m_palette; }; // device type definition DECLARE_DEVICE_TYPE(ISA8_MDA, isa8_mda_device) // ======================> isa8_hercules_device class isa8_hercules_device : public isa8_mda_device { public: // construction/destruction isa8_hercules_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); virtual DECLARE_READ8_MEMBER(io_read) override; virtual DECLARE_WRITE8_MEMBER(io_write) override; virtual DECLARE_READ8_MEMBER(status_r) override; virtual DECLARE_WRITE8_MEMBER(mode_control_w) override; protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; // optional information overrides virtual void device_add_mconfig(machine_config &config) override; virtual const tiny_rom_entry *device_rom_region() const override; private: virtual MC6845_UPDATE_ROW( crtc_update_row ) override; MC6845_UPDATE_ROW( hercules_gfx_update_row ); uint8_t m_configuration_switch; //hercules }; // device type definition DECLARE_DEVICE_TYPE(ISA8_HERCULES, isa8_hercules_device) // ======================> isa8_ec1840_0002_device class isa8_ec1840_0002_device : public isa8_mda_device { public: // construction/destruction isa8_ec1840_0002_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; // optional information overrides virtual void device_add_mconfig(machine_config &config) override; private: virtual DECLARE_WRITE8_MEMBER(mode_control_w) override; virtual MC6845_UPDATE_ROW( crtc_update_row ) override; MC6845_UPDATE_ROW( mda_lowres_text_inten_update_row ); MC6845_UPDATE_ROW( mda_lowres_text_blink_update_row ); std::unique_ptr m_soft_chr_gen; }; // device type definition DECLARE_DEVICE_TYPE(ISA8_EC1840_0002, isa8_ec1840_0002_device) #endif // MAME_BUS_ISA_MDA_H