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#pragma once
#ifndef __ISA_MDA_H__
#define __ISA_MDA_H__
#include "emu.h"
#include "machine/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);
protected:
// device-level overrides
virtual void device_start();
virtual void device_reset();
public:
int m_framecnt;
UINT8 m_mode_control;
mc6845_update_row_func m_update_row;
UINT8 *m_chr_gen;
UINT8 m_vsync;
UINT8 m_hsync;
UINT8 *m_videoram;
UINT8 m_pixel;
required_device<palette_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);
protected:
// device-level overrides
virtual void device_start();
virtual void device_reset();
private:
// internal state
public:
UINT8 m_configuration_switch; //hercules
};
// device type definition
extern const device_type ISA8_HERCULES;
#endif /* __ISA_MDA_H__ */
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