// license:BSD-3-Clause // copyright-holders:Wilbert Pol, Bartman/Abyss (HD6345) /********************************************************************** Motorola MC6845 and compatible CRT controller emulation **********************************************************************/ #ifndef MAME_VIDEO_MC6845_H #define MAME_VIDEO_MC6845_H #pragma once #define MCFG_MC6845_ADD(_tag, _variant, _screen_tag, _clock) \ MCFG_DEVICE_ADD(_tag, _variant, _clock) \ MCFG_VIDEO_SET_SCREEN(_screen_tag) #define MCFG_MOS8563_ADD(_tag, _screen_tag, _clock, _map) \ MCFG_DEVICE_ADD(_tag, MOS8563, _clock) \ MCFG_VIDEO_SET_SCREEN(_screen_tag) \ MCFG_DEVICE_ADDRESS_MAP(0, _map) #define MCFG_MOS8568_ADD(_tag, _screen_tag, _clock, _map) \ MCFG_DEVICE_ADD(_tag, MOS8568, _clock) \ MCFG_VIDEO_SET_SCREEN(_screen_tag) \ MCFG_DEVICE_ADDRESS_MAP(0, _map) #define MCFG_MC6845_SHOW_BORDER_AREA(_show) \ downcast(*device).set_show_border_area(_show); #define MCFG_MC6845_VISAREA_ADJUST(_minx, _maxx, _miny, _maxy) \ downcast(*device).set_visarea_adjust(_minx, _maxx, _miny, _maxy); #define MCFG_MC6845_CHAR_WIDTH(_pixels) \ downcast(*device).set_char_width(_pixels); #define MCFG_MC6845_RECONFIGURE_CB(_class, _method) \ downcast(*device).set_reconfigure_callback(mc6845_device::reconfigure_delegate(&_class::_method, #_class "::" #_method, this)); #define MCFG_MC6845_BEGIN_UPDATE_CB(_class, _method) \ downcast(*device).set_begin_update_callback(mc6845_device::begin_update_delegate(&_class::_method, #_class "::" #_method, this)); #define MCFG_MC6845_UPDATE_ROW_CB(_class, _method) \ downcast(*device).set_update_row_callback(mc6845_device::update_row_delegate(&_class::_method, #_class "::" #_method, this)); #define MCFG_MC6845_END_UPDATE_CB(_class, _method) \ downcast(*device).set_end_update_callback(mc6845_device::end_update_delegate(&_class::_method, #_class "::" #_method, this)); #define MCFG_MC6845_ADDR_CHANGED_CB(_class, _method) \ downcast(*device).set_on_update_addr_change_callback(mc6845_device::on_update_addr_changed_delegate(&_class::_method, #_class "::" #_method, this)); #define MCFG_MC6845_OUT_DE_CB(_write) \ devcb = &downcast(*device).set_out_de_callback(DEVCB_##_write); #define MCFG_MC6845_OUT_CUR_CB(_write) \ devcb = &downcast(*device).set_out_cur_callback(DEVCB_##_write); #define MCFG_MC6845_OUT_HSYNC_CB(_write) \ devcb = &downcast(*device).set_out_hsync_callback(DEVCB_##_write); #define MCFG_MC6845_OUT_VSYNC_CB(_write) \ devcb = &downcast(*device).set_out_vsync_callback(DEVCB_##_write); /* callback definitions */ #define MC6845_RECONFIGURE(name) void name(int width, int height, const rectangle &visarea, attoseconds_t frame_period) #define MC6845_BEGIN_UPDATE(name) void name(bitmap_rgb32 &bitmap, const rectangle &cliprect) #define MC6845_UPDATE_ROW(name) void name(bitmap_rgb32 &bitmap, const rectangle &cliprect, uint16_t ma, uint8_t ra, \ uint16_t y, uint8_t x_count, int8_t cursor_x, int de, int hbp, int vbp) #define MC6845_END_UPDATE(name) void name(bitmap_rgb32 &bitmap, const rectangle &cliprect) #define MC6845_ON_UPDATE_ADDR_CHANGED(name) void name(int address, int strobe) class mc6845_device : public device_t, public device_video_interface { public: typedef device_delegate reconfigure_delegate; typedef device_delegate begin_update_delegate; typedef device_delegate update_row_delegate; typedef device_delegate end_update_delegate; typedef device_delegate on_update_addr_changed_delegate; // construction/destruction mc6845_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); void set_show_border_area(bool show) { m_show_border_area = show; } void set_visarea_adjust(int min_x, int max_x, int min_y, int max_y) { m_visarea_adjust_min_x = min_x; m_visarea_adjust_max_x = max_x; m_visarea_adjust_min_y = min_y; m_visarea_adjust_max_y = max_y; } void set_char_width(int pixels) { m_hpixels_per_column = pixels; } template void set_reconfigure_callback(Object &&cb) { m_reconfigure_cb = std::forward(cb); } template void set_begin_update_callback(Object &&cb) { m_begin_update_cb = std::forward(cb); } template void set_update_row_callback(Object &&cb) { m_update_row_cb = std::forward(cb); } template void set_end_update_callback(Object &&cb) { m_end_update_cb = std::forward(cb); } template void set_on_update_addr_change_callback(Object &&cb) { m_on_update_addr_changed_cb = std::forward(cb); } template devcb_base &set_out_de_callback(Object &&cb) { return m_out_de_cb.set_callback(std::forward(cb)); } template devcb_base &set_out_cur_callback(Object &&cb) { return m_out_cur_cb.set_callback(std::forward(cb)); } template devcb_base &set_out_hsync_callback(Object &&cb) { return m_out_hsync_cb.set_callback(std::forward(cb)); } template devcb_base &set_out_vsync_callback(Object &&cb) { return m_out_vsync_cb.set_callback(std::forward(cb)); } /* select one of the registers for reading or writing */ DECLARE_WRITE8_MEMBER( address_w ) { write_address(data); } void write_address(uint8_t data); /* read from the status register */ DECLARE_READ8_MEMBER( status_r ) { return read_status(); } uint8_t read_status(); /* read from the currently selected register */ DECLARE_READ8_MEMBER( register_r ) { return read_register(); } uint8_t read_register(); /* write to the currently selected register */ DECLARE_WRITE8_MEMBER( register_w ) { write_register(data); } void write_register(uint8_t data); // 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_t get_ma(); /* return the current value on the RA0-RA4 pins */ uint8_t 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); void set_clock(const XTAL &xtal) { set_clock(int(xtal.value())); } /* 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() repeatedly and after all row updating is complete, end_update() */ uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); protected: mc6845_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock); // device-level overrides virtual void device_start() override; virtual void device_reset() override; virtual void device_post_load() override; virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override; 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; /* register file */ uint8_t m_horiz_char_total; /* 0x00 */ uint8_t m_horiz_disp; /* 0x01 */ uint8_t m_horiz_sync_pos; /* 0x02 */ uint8_t m_sync_width; /* 0x03 */ uint8_t m_vert_char_total; /* 0x04 */ uint8_t m_vert_total_adj; /* 0x05 */ uint8_t m_vert_disp; /* 0x06 */ uint8_t m_vert_sync_pos; /* 0x07 */ uint8_t m_mode_control; /* 0x08 */ uint8_t m_max_ras_addr; /* 0x09 */ uint8_t m_cursor_start_ras; /* 0x0a */ uint8_t m_cursor_end_ras; /* 0x0b */ uint16_t m_disp_start_addr; /* 0x0c/0x0d */ uint16_t m_cursor_addr; /* 0x0e/0x0f */ uint16_t m_light_pen_addr; /* 0x10/0x11 */ uint16_t m_update_addr; /* 0x12/0x13 */ /* other internal state */ uint8_t m_register_address_latch; bool m_cursor_state; uint8_t 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_t m_character_counter; /* Not used yet */ uint8_t m_hsync_width_counter; /* Not used yet */ uint8_t m_line_counter; uint8_t m_raster_counter; uint8_t m_adjust_counter; uint8_t 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_t m_vsync_ff; uint8_t m_adjust_active; uint16_t m_line_address; int16_t 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_t m_horiz_pix_total; uint16_t m_vert_pix_total; uint16_t m_max_visible_x; uint16_t m_max_visible_y; uint16_t m_hsync_on_pos; uint16_t m_hsync_off_pos; uint16_t m_vsync_on_pos; uint16_t m_vsync_off_pos; bool m_has_valid_parameters; uint16_t 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 transparent_update(); 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(); virtual void update_cursor_state(); virtual uint8_t draw_scanline(int y, bitmap_rgb32 &bitmap, const rectangle &cliprect); /************************ interface CRTC - driver ************************/ bool m_show_border_area; /* visible screen area (false) active display (true) active display + blanking */ int m_noninterlace_adjust; /* adjust max ras in non-interlace mode */ int m_interlace_adjust; /* adjust max ras in interlace mode */ /* visible screen area adjustment */ int m_visarea_adjust_min_x; int m_visarea_adjust_max_x; int m_visarea_adjust_min_y; int m_visarea_adjust_max_y; int m_hpixels_per_column; /* number of pixels per video memory address */ reconfigure_delegate m_reconfigure_cb; /* if specified, this gets called before any pixel update, optionally return a pointer that will be passed to the update and tear down callbacks */ begin_update_delegate m_begin_update_cb; /* 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 */ update_row_delegate m_update_row_cb; /* if specified, this gets called after all row updating is complete */ end_update_delegate m_end_update_cb; /* Called whenever the update address changes * For vblank/hblank timing strobe indicates the physical update. * vblank/hblank timing not supported yet! */ on_update_addr_changed_delegate m_on_update_addr_changed_cb; /* if specified, this gets called for every change of the display enable pin (pin 18) */ devcb_write_line m_out_de_cb; /* if specified, this gets called for every change of the cursor pin (pin 19) */ devcb_write_line m_out_cur_cb; /* if specified, this gets called for every change of the HSYNC pin (pin 39) */ devcb_write_line m_out_hsync_cb; /* if specified, this gets called for every change of the VSYNC pin (pin 40) */ devcb_write_line m_out_vsync_cb; }; class mc6845_1_device : public mc6845_device { public: mc6845_1_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); protected: virtual void device_start() override; virtual void device_reset() override; }; class r6545_1_device : public mc6845_device { public: r6545_1_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); protected: virtual void device_start() override; virtual void device_reset() override; }; class c6545_1_device : public mc6845_device { public: c6545_1_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); protected: virtual void device_start() override; virtual void device_reset() override; }; class h46505_device : public mc6845_device { public: h46505_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); protected: virtual void device_start() override; virtual void device_reset() override; }; class hd6845_device : public mc6845_device { public: hd6845_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); protected: virtual void device_start() override; virtual void device_reset() override; }; class sy6545_1_device : public mc6845_device { public: sy6545_1_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); protected: virtual void device_start() override; virtual void device_reset() override; }; class sy6845e_device : public mc6845_device { public: sy6845e_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); protected: virtual void device_start() override; virtual void device_reset() override; }; // HD6345/HD6445 CRTC-II // http://bitsavers.informatik.uni-stuttgart.de/pdf/hitachi/_dataBooks/1987_Hitachi_8_16_Bit_Peripheral_LSI_Data_Book.pdf, pp. 99 class hd6345_device : public mc6845_device { public: hd6345_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); DECLARE_WRITE8_MEMBER(address_w); DECLARE_READ8_MEMBER(register_r); DECLARE_WRITE8_MEMBER(register_w); protected: virtual void device_start() override; virtual void device_reset() override; }; class ams40041_device : public mc6845_device { public: ams40041_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); protected: virtual void device_start() override; virtual void device_reset() override; }; class ams40489_device : public mc6845_device { public: ams40489_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); protected: virtual void device_start() override; virtual void device_reset() override; }; class mos8563_device : public mc6845_device, public device_memory_interface, public device_palette_interface { public: mos8563_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); DECLARE_WRITE8_MEMBER( address_w ); DECLARE_READ8_MEMBER( status_r ); DECLARE_READ8_MEMBER( register_r ); DECLARE_WRITE8_MEMBER( register_w ); inline uint8_t read_videoram(offs_t offset); inline void write_videoram(offs_t offset, uint8_t data); MC6845_UPDATE_ROW( vdc_update_row ); protected: mos8563_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock); // device-level overrides virtual void device_start() override; virtual void device_reset() override; virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override; // device_memory_interface overrides virtual space_config_vector memory_space_config() const override; // device_palette_interface overrides virtual uint32_t palette_entries() const override { return 16; } const address_space_config m_videoram_space_config; uint8_t m_char_buffer[80]; uint8_t m_attr_buffer[80]; bool m_char_blink_state; uint8_t m_char_blink_count; /* register file */ uint16_t m_attribute_addr; /* 0x14/0x15 */ uint8_t m_horiz_char; /* 0x16 */ uint8_t m_vert_char_disp; /* 0x17 */ uint8_t m_vert_scroll; /* 0x18 */ uint8_t m_horiz_scroll; /* 0x19 */ uint8_t m_color; /* 0x1a */ uint8_t m_row_addr_incr; /* 0x1b */ uint8_t m_char_base_addr; /* 0x1c */ uint8_t m_underline_ras; /* 0x1d */ uint8_t m_word_count; /* 0x1e */ uint8_t m_data; /* 0x1f */ uint16_t m_block_addr; /* 0x20/0x21 */ uint16_t m_de_begin; /* 0x22/0x23 */ uint8_t m_dram_refresh; /* 0x24 */ uint8_t m_sync_polarity; /* 0x25 */ int m_revision; virtual void update_cursor_state() override; virtual uint8_t draw_scanline(int y, bitmap_rgb32 &bitmap, const rectangle &cliprect) override; static const device_timer_id TIMER_BLOCK_COPY = 9; emu_timer *m_block_copy_timer; void mos8563_videoram_map(address_map &map); }; class mos8568_device : public mos8563_device { public: mos8568_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; }; DECLARE_DEVICE_TYPE(MC6845, mc6845_device) DECLARE_DEVICE_TYPE(MC6845_1, mc6845_1_device) DECLARE_DEVICE_TYPE(R6545_1, r6545_1_device) DECLARE_DEVICE_TYPE(C6545_1, c6545_1_device) DECLARE_DEVICE_TYPE(H46505, h46505_device) DECLARE_DEVICE_TYPE(HD6845, hd6845_device) DECLARE_DEVICE_TYPE(SY6545_1, sy6545_1_device) DECLARE_DEVICE_TYPE(SY6845E, sy6845e_device) DECLARE_DEVICE_TYPE(HD6345, hd6345_device) DECLARE_DEVICE_TYPE(AMS40041, ams40041_device) DECLARE_DEVICE_TYPE(AMS40489, ams40489_device) DECLARE_DEVICE_TYPE(MOS8563, mos8563_device) DECLARE_DEVICE_TYPE(MOS8568, mos8568_device) #endif // MAME_VIDEO_MC6845_H