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-rw-r--r--src/devices/bus/isa/mda.h132
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diff --git a/src/devices/bus/isa/mda.h b/src/devices/bus/isa/mda.h
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+++ b/src/devices/bus/isa/mda.h
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+// 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<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);
+
+ 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();
+
+private:
+ // internal state
+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__ */