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// license:BSD-3-Clause
// copyright-holders:Wilbert Pol
#ifndef MAME_BUS_ISA_CGA_H
#define MAME_BUS_ISA_CGA_H
#pragma once
#include "isa.h"
#include "video/mc6845.h"
#include "emupal.h"
#include "screen.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:
static constexpr feature_type imperfect_features() { return feature::GRAPHICS; }
// construction/destruction
isa8_cga_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual MC6845_UPDATE_ROW( crtc_update_row );
template<bool blink, bool si, bool comp, bool alt, int width> MC6845_UPDATE_ROW( cga_text );
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 );
protected:
isa8_cga_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
required_device<mc6845_device> m_crtc;
required_ioport m_cga_config;
// 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 ioport_constructor device_input_ports() const override;
virtual const tiny_rom_entry *device_rom_region() const override;
virtual uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
DECLARE_WRITE_LINE_MEMBER( hsync_changed );
DECLARE_WRITE_LINE_MEMBER( vsync_changed );
public:
void mode_control_w(uint8_t data);
void set_palette_luts();
void plantronics_w(uint8_t data);
virtual uint8_t io_read(offs_t offset);
virtual void io_write(offs_t offset, uint8_t data);
public:
int m_framecnt;
uint8_t m_mode_control; /* wo 0x3d8 */
uint8_t m_color_select; /* wo 0x3d9 */
//uint8_t m_status; //unused? /* ro 0x3da */
int m_update_row_type, m_y;
uint8_t m_palette_lut_2bpp[4];
offs_t m_chr_gen_offset[4];
uint8_t m_font_selection_mask;
uint8_t *m_chr_gen_base;
uint8_t *m_chr_gen;
uint8_t m_vsync;
uint8_t m_hsync;
size_t m_vram_size;
std::vector<uint8_t> m_vram;
bool m_superimpose;
uint8_t 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;
private:
MC6845_RECONFIGURE(reconfigure);
};
// device type definition
DECLARE_DEVICE_TYPE(ISA8_CGA, isa8_cga_device)
// ======================> isa8_cga_superimpose_device
class isa8_cga_superimpose_device :
public isa8_cga_device
{
public:
// construction/destruction
isa8_cga_superimpose_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
protected:
isa8_cga_superimpose_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
};
// device type definition
DECLARE_DEVICE_TYPE(ISA8_CGA_SUPERIMPOSE, isa8_cga_superimpose_device)
// ======================> isa8_poisk2_device
class isa8_cga_poisk2_device :
public isa8_cga_device
{
public:
// construction/destruction
isa8_cga_poisk2_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// optional information overrides
virtual const tiny_rom_entry *device_rom_region() const override;
};
// device type definition
DECLARE_DEVICE_TYPE(ISA8_CGA_POISK2, isa8_cga_poisk2_device)
// ======================> isa8_pc1512_device
class isa8_cga_pc1512_device :
public isa8_cga_device
{
public:
// construction/destruction
isa8_cga_pc1512_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// optional information overrides
virtual ioport_constructor device_input_ports() const override;
virtual const tiny_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_t m_write;
uint8_t m_read;
uint8_t m_mc6845_address;
uint8_t 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_t mc6845_writeonce_register[31];
virtual uint8_t io_read(offs_t offset) override;
virtual void io_write(offs_t offset, uint8_t data) override;
void vram_w(offs_t offset, uint8_t data);
};
// device type definition
DECLARE_DEVICE_TYPE(ISA8_CGA_PC1512, isa8_cga_pc1512_device)
// ======================> isa8_wyse700_device
class isa8_wyse700_device :
public isa8_cga_device
{
public:
// construction/destruction
isa8_wyse700_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// optional information overrides
virtual const tiny_rom_entry *device_rom_region() const override;
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
public:
virtual uint8_t io_read(offs_t offset) override;
virtual void io_write(offs_t offset, uint8_t data) override;
virtual uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) override;
void change_resolution(uint8_t mode);
uint8_t m_bank_offset;
uint8_t m_bank_base;
uint8_t m_control;
};
// device type definition
DECLARE_DEVICE_TYPE(ISA8_WYSE700, isa8_wyse700_device)
// ======================> isa8_ec1841_0002_device
class isa8_ec1841_0002_device :
public isa8_cga_device
{
public:
// construction/destruction
isa8_ec1841_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;
public:
virtual uint8_t io_read(offs_t offset) override;
virtual void io_write(offs_t offset, uint8_t data) override;
uint8_t m_p3df;
uint8_t char_ram_read(offs_t offset);
void char_ram_write(offs_t offset, uint8_t data);
};
// device type definition
DECLARE_DEVICE_TYPE(ISA8_EC1841_0002, isa8_ec1841_0002_device)
// ======================> isa8_cga_iskr1031_device
class isa8_cga_iskr1030m_device :
public isa8_cga_device
{
public:
// construction/destruction
isa8_cga_iskr1030m_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual const tiny_rom_entry *device_rom_region() const override;
};
// device type definition
DECLARE_DEVICE_TYPE(ISA8_CGA_ISKR1030M, isa8_cga_iskr1030m_device)
// ======================> isa8_cga_iskr1031_device
class isa8_cga_iskr1031_device :
public isa8_cga_device
{
public:
// construction/destruction
isa8_cga_iskr1031_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual const tiny_rom_entry *device_rom_region() const override;
};
// device type definition
DECLARE_DEVICE_TYPE(ISA8_CGA_ISKR1031, isa8_cga_iskr1031_device)
// ======================> isa8_cga_mc1502_device
class isa8_cga_mc1502_device :
public isa8_cga_device
{
public:
// construction/destruction
isa8_cga_mc1502_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// optional information overrides
virtual void device_add_mconfig(machine_config &config) override;
virtual const tiny_rom_entry *device_rom_region() const override;
private:
MC6845_RECONFIGURE(reconfigure);
};
// device type definition
DECLARE_DEVICE_TYPE(ISA8_CGA_MC1502, isa8_cga_mc1502_device)
class isa8_cga_m24_device :
public isa8_cga_device
{
public:
// construction/destruction
isa8_cga_m24_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual uint8_t io_read(offs_t offset) override;
virtual void io_write(offs_t offset, uint8_t data) override;
virtual MC6845_UPDATE_ROW( crtc_update_row ) override;
MC6845_UPDATE_ROW( m24_gfx_1bpp_m24_update_row );
MC6845_RECONFIGURE(reconfigure);
protected:
isa8_cga_m24_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
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;
uint8_t m_mode2, m_index;
};
// device type definition
DECLARE_DEVICE_TYPE(ISA8_CGA_M24, isa8_cga_m24_device)
class isa8_cga_cportiii_device :
public isa8_cga_m24_device
{
public:
isa8_cga_cportiii_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
uint8_t port_13c6_r();
void port_13c6_w(uint8_t data);
uint8_t port_23c6_r();
void port_23c6_w(uint8_t data);
uint8_t char_ram_read(offs_t offset);
void char_ram_write(offs_t offset, uint8_t data);
protected:
virtual void device_reset() override;
virtual void device_add_mconfig(machine_config &config) override;
virtual const tiny_rom_entry *device_rom_region() const override;
};
DECLARE_DEVICE_TYPE(ISA8_CGA_CPORTIII, isa8_cga_cportiii_device)
#endif // MAME_BUS_ISA_CGA_H
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