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diff --git a/trunk/src/emu/video/mc6845.h b/trunk/src/emu/video/mc6845.h
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+++ b/trunk/src/emu/video/mc6845.h
@@ -0,0 +1,374 @@
+/**********************************************************************
+
+ Motorola MC6845 and compatible CRT controller emulation
+
+ Copyright Nicola Salmoria and the MAME Team.
+ Visit http://mamedev.org for licensing and usage restrictions.
+
+**********************************************************************/
+
+#ifndef __MC6845__
+#define __MC6845__
+
+#include "emu.h"
+#include "machine/devhelpr.h"
+
+
+#define MC6845_INTERFACE(name) \
+ const mc6845_interface (name) =
+
+#define MCFG_MC6845_ADD(_tag, _variant, _clock, _config) \
+ MCFG_DEVICE_ADD(_tag, _variant, _clock) \
+ MCFG_DEVICE_CONFIG(_config)
+
+
+class mc6845_device;
+
+/* callback definitions */
+typedef void * (*mc6845_begin_update_func)(mc6845_device *device, bitmap_t *bitmap, const rectangle *cliprect);
+#define MC6845_BEGIN_UPDATE(name) void *name(mc6845_device *device, bitmap_t *bitmap, const rectangle *cliprect)
+
+
+typedef void (*mc6845_update_row_func)(mc6845_device *device, bitmap_t *bitmap,
+ const rectangle *cliprect, UINT16 ma, UINT8 ra,
+ UINT16 y, UINT8 x_count, INT8 cursor_x, void *param);
+
+
+#define MC6845_UPDATE_ROW(name) void name(mc6845_device *device, bitmap_t *bitmap, \
+ const rectangle *cliprect, UINT16 ma, UINT8 ra, \
+ UINT16 y, UINT8 x_count, INT8 cursor_x, void *param)
+
+
+typedef void (*mc6845_end_update_func)(mc6845_device *device, bitmap_t *bitmap, const rectangle *cliprect, void *param);
+#define MC6845_END_UPDATE(name) void name(mc6845_device *device, bitmap_t *bitmap, const rectangle *cliprect, void *param)
+
+
+typedef void (*mc6845_on_update_addr_changed_func)(mc6845_device *device, int address, int strobe);
+#define MC6845_ON_UPDATE_ADDR_CHANGED(name) void name(mc6845_device *device, int address, int strobe)
+
+
+/* interface */
+typedef struct _mc6845_interface mc6845_interface;
+struct _mc6845_interface
+{
+ const char *m_screen_tag; /* screen we are acting on */
+ int m_hpixels_per_column; /* number of pixels per video memory address */
+
+ /* if specified, this gets called before any pixel update,
+ optionally return a pointer that will be passed to the
+ update and tear down callbacks */
+ mc6845_begin_update_func m_begin_update;
+
+ /* this gets called for every row, the driver must output
+ x_count * hpixels_per_column pixels.
+ cursor_x indicates the character position where the cursor is, or -1
+ if there is no cursor on this row */
+ mc6845_update_row_func m_update_row;
+
+ /* if specified, this gets called after all row updating is complete */
+ mc6845_end_update_func m_end_update;
+
+ /* if specified, this gets called for every change of the disply enable pin (pin 18) */
+ devcb_write_line m_out_de_func;
+
+ /* if specified, this gets called for every change of the cursor pin (pin 19) */
+ devcb_write_line m_out_cur_func;
+
+ /* if specified, this gets called for every change of the HSYNC pin (pin 39) */
+ devcb_write_line m_out_hsync_func;
+
+ /* if specified, this gets called for every change of the VSYNC pin (pin 40) */
+ devcb_write_line m_out_vsync_func;
+
+ /* Called whenenever the update address changes
+ * For vblank/hblank timing strobe indicates the physical update.
+ * vblank/hblank timing not supported yet! */
+
+ mc6845_on_update_addr_changed_func m_on_update_addr_changed;
+};
+
+
+class mc6845_device : public device_t,
+ public mc6845_interface
+{
+ friend class mc6845_1_device;
+ friend class r6545_1_device;
+ friend class c6545_1_device;
+ friend class h46505_device;
+ friend class hd6845_device;
+ friend class sy6545_1_device;
+ friend class sy6845e_device;
+ friend class hd6345_device;
+ friend class ams40041_device;
+
+public:
+ // construction/destruction
+ mc6845_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+ mc6845_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock);
+
+ /* select one of the registers for reading or writing */
+ DECLARE_WRITE8_MEMBER( address_w );
+
+ /* read from the status register */
+ DECLARE_READ8_MEMBER( status_r );
+
+ /* read from the currently selected register */
+ DECLARE_READ8_MEMBER( register_r );
+
+ /* write to the currently selected register */
+ DECLARE_WRITE8_MEMBER( register_w );
+
+ // read display enable line state
+ DECLARE_READ_LINE_MEMBER( de_r );
+
+ // read cursor line state
+ DECLARE_READ_LINE_MEMBER( cursor_r );
+
+ // read horizontal sync line state
+ DECLARE_READ_LINE_MEMBER( hsync_r );
+
+ // read vertical sync line state
+ DECLARE_READ_LINE_MEMBER( vsync_r );
+
+ /* return the current value on the MA0-MA13 pins */
+ UINT16 get_ma();
+
+ /* return the current value on the RA0-RA4 pins */
+ UINT8 get_ra();
+
+ /* simulates the LO->HI clocking of the light pen pin (pin 3) */
+ void assert_light_pen_input();
+
+ /* set the clock (pin 21) of the chip */
+ void set_clock(int clock);
+
+ /* set number of pixels per video memory address */
+ void set_hpixels_per_column(int hpixels_per_column);
+
+ /* updates the screen -- this will call begin_update(),
+ followed by update_row() reapeatedly and after all row
+ updating is complete, end_update() */
+ void update(bitmap_t *bitmap, const rectangle *cliprect);
+
+protected:
+ // device-level overrides
+ virtual void device_config_complete();
+ virtual void device_start();
+ virtual void device_reset();
+ virtual void device_post_load();
+ virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
+
+private:
+ bool m_supports_disp_start_addr_r;
+ bool m_supports_vert_sync_width;
+ bool m_supports_status_reg_d5;
+ bool m_supports_status_reg_d6;
+ bool m_supports_status_reg_d7;
+ bool m_supports_transparent;
+
+ devcb_resolved_write_line m_res_out_de_func;
+ devcb_resolved_write_line m_res_out_cur_func;
+ devcb_resolved_write_line m_res_out_hsync_func;
+ devcb_resolved_write_line m_res_out_vsync_func;
+
+ int m_device_type;
+ screen_device *m_screen;
+
+ /* register file */
+ UINT8 m_horiz_char_total; /* 0x00 */
+ UINT8 m_horiz_disp; /* 0x01 */
+ UINT8 m_horiz_sync_pos; /* 0x02 */
+ UINT8 m_sync_width; /* 0x03 */
+ UINT8 m_vert_char_total; /* 0x04 */
+ UINT8 m_vert_total_adj; /* 0x05 */
+ UINT8 m_vert_disp; /* 0x06 */
+ UINT8 m_vert_sync_pos; /* 0x07 */
+ UINT8 m_mode_control; /* 0x08 */
+ UINT8 m_max_ras_addr; /* 0x09 */
+ UINT8 m_cursor_start_ras; /* 0x0a */
+ UINT8 m_cursor_end_ras; /* 0x0b */
+ UINT16 m_disp_start_addr; /* 0x0c/0x0d */
+ UINT16 m_cursor_addr; /* 0x0e/0x0f */
+ UINT16 m_light_pen_addr; /* 0x10/0x11 */
+ UINT16 m_update_addr; /* 0x12/0x13 */
+
+ /* other internal state */
+ UINT8 m_register_address_latch;
+ bool m_cursor_state;
+ UINT8 m_cursor_blink_count;
+ bool m_update_ready_bit;
+ /* output signals */
+ int m_cur;
+ int m_hsync;
+ int m_vsync;
+ int m_de;
+
+ /* internal counters */
+ UINT8 m_character_counter; /* Not used yet */
+ UINT8 m_hsync_width_counter; /* Not used yet */
+ UINT8 m_line_counter;
+ UINT8 m_raster_counter;
+ UINT8 m_adjust_counter;
+ UINT8 m_vsync_width_counter;
+
+ bool m_line_enable_ff; /* Internal flip flop which is set when the line_counter is reset and reset when vert_disp is reached */
+ UINT8 m_vsync_ff;
+ UINT8 m_adjust_active;
+ UINT16 m_line_address;
+ INT16 m_cursor_x;
+
+ /* timers */
+ static const device_timer_id TIMER_LINE = 0;
+ static const device_timer_id TIMER_DE_OFF = 1;
+ static const device_timer_id TIMER_CUR_ON = 2;
+ static const device_timer_id TIMER_CUR_OFF = 3;
+ static const device_timer_id TIMER_HSYNC_ON = 4;
+ static const device_timer_id TIMER_HSYNC_OFF = 5;
+ static const device_timer_id TIMER_LIGHT_PEN_LATCH = 6;
+ static const device_timer_id TIMER_UPD_ADR = 7;
+ static const device_timer_id TIMER_UPD_TRANS = 8;
+
+ emu_timer *m_line_timer;
+ emu_timer *m_de_off_timer;
+ emu_timer *m_cur_on_timer;
+ emu_timer *m_cur_off_timer;
+ emu_timer *m_hsync_on_timer;
+ emu_timer *m_hsync_off_timer;
+ emu_timer *m_light_pen_latch_timer;
+ emu_timer *m_upd_adr_timer;
+ emu_timer *m_upd_trans_timer;
+
+ /* computed values - do NOT state save these! */
+ /* These computed are used to define the screen parameters for a driver */
+ UINT16 m_horiz_pix_total;
+ UINT16 m_vert_pix_total;
+ UINT16 m_max_visible_x;
+ UINT16 m_max_visible_y;
+ UINT16 m_hsync_on_pos;
+ UINT16 m_hsync_off_pos;
+ UINT16 m_vsync_on_pos;
+ UINT16 m_vsync_off_pos;
+ bool m_has_valid_parameters;
+
+ UINT16 m_current_disp_addr; /* the display address currently drawn (used only in mc6845_update) */
+
+ bool m_light_pen_latched;
+ attotime m_upd_time;
+
+ void update_upd_adr_timer();
+ void call_on_update_address(int strobe);
+ void recompute_parameters(bool postload);
+ void update_counters();
+ void set_de(int state);
+ void set_hsync(int state);
+ void set_vsync(int state);
+ void set_cur(int state);
+ void handle_line_timer();
+ void update_cursor_state();
+};
+
+
+class mc6845_1_device : public mc6845_device
+{
+public:
+ mc6845_1_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+protected:
+ virtual void device_start();
+ virtual void device_reset();
+};
+
+class r6545_1_device : public mc6845_device
+{
+public:
+ r6545_1_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+protected:
+ virtual void device_start();
+ virtual void device_reset();
+};
+
+class c6545_1_device : public mc6845_device
+{
+public:
+ c6545_1_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+protected:
+ virtual void device_start();
+ virtual void device_reset();
+};
+
+class h46505_device : public mc6845_device
+{
+public:
+ h46505_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+protected:
+ virtual void device_start();
+ virtual void device_reset();
+};
+
+class hd6845_device : public mc6845_device
+{
+public:
+ hd6845_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+protected:
+ virtual void device_start();
+ virtual void device_reset();
+};
+
+class sy6545_1_device : public mc6845_device
+{
+public:
+ sy6545_1_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+protected:
+ virtual void device_start();
+ virtual void device_reset();
+};
+
+class sy6845e_device : public mc6845_device
+{
+public:
+ sy6845e_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+protected:
+ virtual void device_start();
+ virtual void device_reset();
+};
+
+class hd6345_device : public mc6845_device
+{
+public:
+ hd6345_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+protected:
+ virtual void device_start();
+ virtual void device_reset();
+};
+
+class ams40041_device : public mc6845_device
+{
+public:
+ ams40041_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+protected:
+ virtual void device_start();
+ virtual void device_reset();
+};
+
+
+extern const device_type MC6845;
+extern const device_type MC6845_1;
+extern const device_type R6545_1;
+extern const device_type C6545_1;
+extern const device_type H46505;
+extern const device_type HD6845;
+extern const device_type SY6545_1;
+extern const device_type SY6845E;
+extern const device_type HD6345;
+extern const device_type AMS40041;
+
+
+#endif