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Diffstat (limited to 'src/emu/video/scn2674.h')
-rw-r--r--src/emu/video/scn2674.h128
1 files changed, 128 insertions, 0 deletions
diff --git a/src/emu/video/scn2674.h b/src/emu/video/scn2674.h
new file mode 100644
index 00000000000..de704f9e969
--- /dev/null
+++ b/src/emu/video/scn2674.h
@@ -0,0 +1,128 @@
+#ifndef SCN2674_H
+#define SCN2674_h
+
+#include "emu.h"
+
+#define MCFG_SCN2674_VIDEO_ADD(_tag, _clock, _irq) \
+ MCFG_DEVICE_ADD(_tag, SCN2674_VIDEO, _clock) \
+ devcb = &scn2674_device::set_irq_callback(*device, DEVCB_##_irq);
+
+#define MCFG_SCN2674_TEXT_CHARACTER_WIDTH(_value) \
+ scn2674_device::static_set_character_width(*device, _value);
+
+#define MCFG_SCN2674_GFX_CHARACTER_WIDTH(_value) \
+ scn2674_device::static_set_gfx_character_width(*device, _value);
+
+#define MCFG_SCN2674_DRAW_CHARACTER_CALLBACK_OWNER(_class, _method) \
+ scn2674_device::static_set_display_callback(*device, scn2674_device::draw_character_delegate(&_class::_method, #_class "::" #_method, downcast<_class *>(owner)));
+
+#define SCN2674_DRAW_CHARACTER_MEMBER(_name) void _name(bitmap_rgb32 &bitmap, int x, int y, UINT8 linecount, UINT8 charcode, UINT16 address, UINT8 cursor, UINT8 dw, UINT8 lg, UINT8 ul, UINT8 blink)
+
+class scn2674_device : public device_t,
+ public device_video_interface,
+ public device_memory_interface
+{
+public:
+ scn2674_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ typedef device_delegate<void (bitmap_rgb32 &bitmap, int x, int y, UINT8 linecount, UINT8 charcode, UINT16 address, UINT8 cursor, UINT8 dw, UINT8 lg, UINT8 ul, UINT8 blink)> draw_character_delegate;
+
+ // static configuration
+ template<class _Object> static devcb_base &set_irq_callback(device_t &device, _Object object) { return downcast<scn2674_device &>(device).m_irq_cb.set_callback(object); }
+ static void static_set_character_width(device_t &device, int value) { downcast<scn2674_device &>(device).m_text_hpixels_per_column = value; }
+ static void static_set_gfx_character_width(device_t &device, int value) { downcast<scn2674_device &>(device).m_gfx_hpixels_per_column = value; }
+ static void static_set_display_callback(device_t &device, draw_character_delegate callback) { downcast<scn2674_device &>(device).m_display_cb = callback; }
+
+ DECLARE_READ8_MEMBER( read );
+ DECLARE_WRITE8_MEMBER( write );
+
+ UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
+ virtual const address_space_config *memory_space_config(address_spacenum spacenum = AS_0) const { return (spacenum == AS_0) ? &m_space_config : NULL; }
+
+protected:
+ virtual void device_start();
+ virtual void device_reset();
+ virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
+
+private:
+ bitmap_rgb32 m_bitmap;
+ devcb_write_line m_irq_cb;
+
+ UINT8 m_IR_pointer;
+ UINT8 m_screen1_l;
+ UINT8 m_screen1_h;
+ UINT8 m_cursor_l;
+ UINT8 m_cursor_h;
+ UINT8 m_screen2_l;
+ UINT8 m_screen2_h;
+ UINT8 m_irq_register;
+ UINT8 m_status_register;
+ UINT8 m_irq_mask;
+ UINT8 m_gfx_enabled;
+ UINT8 m_display_enabled;
+ UINT8 m_display_enabled_field;
+ UINT8 m_display_enabled_scanline;
+ UINT8 m_cursor_enabled;
+ UINT8 m_hpixels_per_column;
+ UINT8 m_text_hpixels_per_column;
+ UINT8 m_gfx_hpixels_per_column;
+ UINT8 m_IR0_double_ht_wd;
+ UINT8 m_IR0_scanline_per_char_row;
+ UINT8 m_IR0_sync_select;
+ UINT8 m_IR0_buffer_mode_select;
+ UINT8 m_IR1_interlace_enable;
+ UINT8 m_IR1_equalizing_constant;
+ UINT8 m_IR2_row_table;
+ UINT8 m_IR2_horz_sync_width;
+ UINT8 m_IR2_horz_back_porch;
+ UINT8 m_IR3_vert_front_porch;
+ UINT8 m_IR3_vert_back_porch;
+ UINT8 m_IR4_rows_per_screen;
+ UINT8 m_IR4_character_blink_rate_divisor;
+ UINT8 m_IR5_character_per_row;
+ UINT8 m_IR6_cursor_first_scanline;
+ UINT8 m_IR6_cursor_last_scanline;
+ UINT8 m_IR7_cursor_underline_position;
+ UINT8 m_IR7_cursor_rate_divisor;
+ UINT8 m_IR7_cursor_blink;
+ UINT8 m_IR7_vsync_width;
+ UINT8 m_IR8_display_buffer_first_address_LSB;
+ UINT8 m_IR9_display_buffer_first_address_MSB;
+ UINT8 m_IR9_display_buffer_last_address;
+ UINT8 m_IR10_display_pointer_address_lower;
+ UINT8 m_IR11_display_pointer_address_upper;
+ UINT8 m_IR11_reset_scanline_counter_on_scrollup;
+ UINT8 m_IR11_reset_scanline_counter_on_scrolldown;
+ UINT8 m_IR12_scroll_start;
+ UINT8 m_IR12_split_register_1;
+ UINT8 m_IR13_scroll_end;
+ UINT8 m_IR13_split_register_2;
+ UINT8 m_IR14_scroll_lines;
+ UINT8 m_IR14_double_1;
+ UINT8 m_IR14_double_2;
+ UINT8 m_spl1;
+ UINT8 m_spl2;
+ UINT8 m_dbl1;
+ int m_linecounter;
+ UINT16 m_address;
+ bool m_cursor_on;
+
+ UINT8 m_irq_state;
+
+ void write_init_regs(UINT8 data);
+ void write_command(UINT8 data);
+ void recompute_parameters();
+
+ draw_character_delegate m_display_cb;
+ emu_timer *m_scanline_timer;
+ const address_space_config m_space_config;
+ enum
+ {
+ TIMER_SCANLINE
+ };
+};
+
+
+extern const device_type SCN2674_VIDEO;
+
+#endif