// license:BSD-3-Clause // copyright-holders:Wilbert Pol, Miodrag Milanovic #pragma once #ifndef __ISA_MDA_H__ #define __ISA_MDA_H__ #include "emu.h" #include "isa.h" #include "video/mc6845.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 clock); isa8_mda_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source); // optional information overrides virtual machine_config_constructor device_mconfig_additions() const; virtual const rom_entry *device_rom_region() const; DECLARE_WRITE_LINE_MEMBER(hsync_changed); DECLARE_WRITE_LINE_MEMBER(vsync_changed); 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); WRITE_LINE_MEMBER(pc_cpu_line); virtual MC6845_UPDATE_ROW( crtc_update_row ); MC6845_UPDATE_ROW( mda_text_inten_update_row ); MC6845_UPDATE_ROW( mda_text_blink_update_row ); protected: // device-level overrides virtual void device_start(); virtual void device_reset(); public: int m_framecnt; UINT8 m_mode_control; int m_update_row_type; UINT8 *m_chr_gen; UINT8 m_vsync; UINT8 m_hsync; dynamic_buffer m_videoram; UINT8 m_pixel; required_device m_palette; }; // device type definition extern const device_type ISA8_MDA; // ======================> 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 clock); // optional information overrides virtual machine_config_constructor device_mconfig_additions() const; virtual const rom_entry *device_rom_region() const; 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); virtual MC6845_UPDATE_ROW( crtc_update_row ); MC6845_UPDATE_ROW( hercules_gfx_update_row ); protected: // device-level overrides virtual void device_start(); virtual void device_reset(); public: UINT8 m_configuration_switch; //hercules }; // device type definition extern const device_type ISA8_HERCULES; // ======================> 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 clock); // optional information overrides virtual machine_config_constructor device_mconfig_additions() const; virtual DECLARE_WRITE8_MEMBER(mode_control_w); virtual MC6845_UPDATE_ROW( crtc_update_row ); MC6845_UPDATE_ROW( mda_lowres_text_inten_update_row ); MC6845_UPDATE_ROW( mda_lowres_text_blink_update_row ); protected: // device-level overrides virtual void device_start(); virtual void device_reset(); public: UINT8 *m_soft_chr_gen; }; // device type definition extern const device_type ISA8_EC1840_0002; #endif /* __ISA_MDA_H__ */