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// license:BSD-3-Clause
// copyright-holders:Wilbert Pol
#pragma once
#ifndef __ISA_CGA_H__
#define __ISA_CGA_H__
#include "emu.h"
#include "isa.h"
#include "video/mc6845.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> isa8_cga_device
class isa8_cga_device :
public device_t,
public device_isa8_card_interface
{
friend class isa8_cga_superimpose_device;
// friend class isa8_ec1841_0002_device;
friend class isa8_cga_poisk2_device;
friend class isa8_cga_pc1512_device;
public:
// construction/destruction
isa8_cga_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
isa8_cga_device(const machine_config &mconfig, device_type type, const char *name, std::string tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
virtual MC6845_UPDATE_ROW( crtc_update_row );
MC6845_UPDATE_ROW( cga_text_inten_update_row );
MC6845_UPDATE_ROW( cga_text_inten_comp_grey_update_row );
MC6845_UPDATE_ROW( cga_text_inten_alt_update_row );
MC6845_UPDATE_ROW( cga_text_blink_update_row );
MC6845_UPDATE_ROW( cga_text_blink_update_row_si );
MC6845_UPDATE_ROW( cga_text_blink_alt_update_row );
MC6845_UPDATE_ROW( cga_gfx_4bppl_update_row );
MC6845_UPDATE_ROW( cga_gfx_4bpph_update_row );
MC6845_UPDATE_ROW( cga_gfx_2bpp_update_row );
MC6845_UPDATE_ROW( cga_gfx_1bpp_update_row );
// optional information overrides
virtual machine_config_constructor device_mconfig_additions() const override;
virtual ioport_constructor device_input_ports() const override;
virtual const rom_entry *device_rom_region() const override;
protected:
required_ioport m_cga_config;
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
public:
void mode_control_w(UINT8 data);
void set_palette_luts();
void plantronics_w(UINT8 data);
virtual DECLARE_READ8_MEMBER( io_read );
virtual DECLARE_WRITE8_MEMBER( io_write );
DECLARE_WRITE_LINE_MEMBER( hsync_changed );
DECLARE_WRITE_LINE_MEMBER( vsync_changed );
virtual UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
MC6845_RECONFIGURE(reconfigure);
public:
int m_framecnt;
UINT8 m_mode_control; /* wo 0x3d8 */
UINT8 m_color_select; /* wo 0x3d9 */
//UINT8 m_status; //unused? /* ro 0x3da */
int m_update_row_type, m_y;
UINT8 m_palette_lut_2bpp[4];
offs_t m_chr_gen_offset[4];
UINT8 m_font_selection_mask;
UINT8 *m_chr_gen_base;
UINT8 *m_chr_gen;
UINT8 m_vsync;
UINT8 m_hsync;
size_t m_vram_size;
dynamic_buffer m_vram;
bool m_superimpose;
UINT8 m_plantronics; /* This should be moved into the appropriate subclass */
offs_t m_start_offset;
required_device<palette_device> m_palette;
required_device<screen_device> m_screen;
};
// device type definition
extern const device_type ISA8_CGA;
// ======================> isa8_cga_superimpose_device
class isa8_cga_superimpose_device :
public isa8_cga_device
{
public:
// construction/destruction
isa8_cga_superimpose_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
isa8_cga_superimpose_device(const machine_config &mconfig, device_type type, const char *name, std::string tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
};
// device type definition
extern const device_type ISA8_CGA_SUPERIMPOSE;
// ======================> isa8_poisk2_device
class isa8_cga_poisk2_device :
public isa8_cga_device
{
public:
// construction/destruction
isa8_cga_poisk2_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
// optional information overrides
virtual const rom_entry *device_rom_region() const override;
};
// device type definition
extern const device_type ISA8_CGA_POISK2;
// ======================> isa8_pc1512_device
class isa8_cga_pc1512_device :
public isa8_cga_device
{
public:
// construction/destruction
isa8_cga_pc1512_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
// optional information overrides
virtual ioport_constructor device_input_ports() const override;
virtual const rom_entry *device_rom_region() const override;
virtual MC6845_UPDATE_ROW( crtc_update_row ) override;
MC6845_UPDATE_ROW( pc1512_gfx_4bpp_update_row );
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
public:
UINT8 m_write;
UINT8 m_read;
UINT8 m_mc6845_address;
UINT8 m_mc6845_locked_register[31];
public:
// Static information
// mapping of the 4 planes into videoram
// (text data should be readable at videoram+0)
static const offs_t vram_offset[4];
static const UINT8 mc6845_writeonce_register[31];
virtual DECLARE_READ8_MEMBER( io_read ) override;
virtual DECLARE_WRITE8_MEMBER( io_write ) override;
DECLARE_WRITE8_MEMBER( vram_w );
};
// device type definition
extern const device_type ISA8_CGA_PC1512;
// ======================> isa8_wyse700_device
class isa8_wyse700_device :
public isa8_cga_device
{
public:
// construction/destruction
isa8_wyse700_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
// optional information overrides
virtual const rom_entry *device_rom_region() const override;
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
public:
virtual DECLARE_READ8_MEMBER( io_read ) override;
virtual DECLARE_WRITE8_MEMBER( io_write ) override;
virtual UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) override;
void change_resolution(UINT8 mode);
UINT8 m_bank_offset;
UINT8 m_bank_base;
UINT8 m_control;
};
// device type definition
extern const device_type ISA8_WYSE700;
// ======================> isa8_ec1841_0002_device
class isa8_ec1841_0002_device :
public isa8_cga_device
{
public:
// construction/destruction
isa8_ec1841_0002_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
public:
virtual DECLARE_READ8_MEMBER( io_read ) override;
virtual DECLARE_WRITE8_MEMBER( io_write ) override;
UINT8 m_p3df;
DECLARE_READ8_MEMBER( char_ram_read );
DECLARE_WRITE8_MEMBER( char_ram_write );
};
// device type definition
extern const device_type ISA8_EC1841_0002;
// ======================> isa8_cga_iskr1031_device
class isa8_cga_iskr1030m_device :
public isa8_cga_device
{
public:
// construction/destruction
isa8_cga_iskr1030m_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
virtual const rom_entry *device_rom_region() const override;
};
// device type definition
extern const device_type ISA8_CGA_ISKR1030M;
// ======================> isa8_cga_iskr1031_device
class isa8_cga_iskr1031_device :
public isa8_cga_device
{
public:
// construction/destruction
isa8_cga_iskr1031_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
virtual const rom_entry *device_rom_region() const override;
};
// device type definition
extern const device_type ISA8_CGA_ISKR1031;
// ======================> isa8_cga_mc1502_device
class isa8_cga_mc1502_device :
public isa8_cga_device
{
public:
// construction/destruction
isa8_cga_mc1502_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
// optional information overrides
virtual const rom_entry *device_rom_region() const override;
};
// device type definition
extern const device_type ISA8_CGA_MC1502;
class isa8_cga_m24_device :
public isa8_cga_device
{
public:
// construction/destruction
isa8_cga_m24_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
virtual machine_config_constructor device_mconfig_additions() const override;
// optional information overrides
//virtual const rom_entry *device_rom_region() const;
virtual DECLARE_READ8_MEMBER( io_read ) override;
virtual DECLARE_WRITE8_MEMBER( io_write ) override;
virtual MC6845_UPDATE_ROW( crtc_update_row ) override;
MC6845_UPDATE_ROW( m24_gfx_1bpp_m24_update_row );
MC6845_RECONFIGURE(reconfigure);
protected:
virtual void device_reset() override;
private:
UINT8 m_mode2, m_index;
};
// device type definition
extern const device_type ISA8_CGA_M24;
#endif /* __ISA_CGA_H__ */
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