// license:LGPL-2.1+ // copyright-holders:Angelo Salese, R. Belmont, Juergen Buchmueller /*************************************************************************** Acorn VIDC10 (VIDeo Controller) device chip ***************************************************************************/ #ifndef MAME_MACHINE_ACORN_VIDC_H #define MAME_MACHINE_ACORN_VIDC_H #pragma once #include "speaker.h" #include "sound/dac.h" //************************************************************************** // INTERFACE CONFIGURATION MACROS //************************************************************************** //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> acorn_vidc10_device class acorn_vidc10_device : public device_t, public device_memory_interface, public device_palette_interface, public device_video_interface { public: // I/O operations void write(offs_t offset, u32 data, u32 mem_mask = ~0); int flyback_r(); auto vblank() { return m_vblank_cb.bind(); } auto sound_drq() { return m_sound_drq_cb.bind(); } // MEMC comms void write_vram(u32 offset, u8 data) { m_data_vram[offset & (m_data_vram_mask)] = data; } void write_cram(u32 offset, u8 data) { m_cursor_vram[offset & (m_cursor_vram_mask)] = data; } void write_dac(u8 channel, u8 data); void clear_dac(u8 channel) { m_dac[channel & 7]->write(0); } void update_sound_mode(bool state) { m_sound_mode = state; refresh_sound_frequency(); } void set_cursor_enable(bool state) { m_cursor_enable = state; } u32 get_cursor_size() { return (m_crtc_regs[CRTC_VCER] - m_crtc_regs[CRTC_VCSR]) * (32/4); } virtual bool get_dac_mode() { return false; } protected: acorn_vidc10_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock, int dac_type); // device-level overrides //virtual void device_validity_check(validity_checker &valid) const override; virtual void device_add_mconfig(machine_config &config) override; virtual u32 palette_entries() const noexcept override; virtual void device_config_complete() override; virtual void device_start() override; virtual void device_reset() override; virtual space_config_vector memory_space_config() const override; u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); virtual u32 get_pixel_clock(); TIMER_CALLBACK_MEMBER(vblank_timer); TIMER_CALLBACK_MEMBER(sound_drq_timer); address_space_config m_space_config; void regs_map(address_map &map); enum { CRTC_HCR = 0, CRTC_HSWR, CRTC_HBSR, CRTC_HDSR, CRTC_HDER, CRTC_HBER, CRTC_HCSR, CRTC_HIR, CRTC_VCR, CRTC_VSWR, CRTC_VBSR, CRTC_VDSR, CRTC_VDER, CRTC_VBER, CRTC_VCSR, CRTC_VCER }; u32 m_crtc_regs[16]; inline void screen_vblank_line_update(); inline void screen_dynamic_res_change(); void refresh_sound_frequency(); u16 m_pal_4bpp_base; u16 m_pal_cursor_base; u16 m_pal_border_base; u8 m_bpp_mode, m_crtc_interlace; u8 m_sound_frequency_latch; bool m_sound_mode; required_device_array m_dac; int m_dac_type; required_device m_lspeaker; required_device m_rspeaker; virtual void refresh_stereo_image(u8 channel); const int m_sound_max_channels = 8; private: devcb_write_line m_vblank_cb; devcb_write_line m_sound_drq_cb; void pal_data_display_w(offs_t offset, u32 data); void pal_data_cursor_w(offs_t offset, u32 data); void stereo_image_w(offs_t offset, u32 data); void crtc_w(offs_t offset, u32 data); void sound_frequency_w(u32 data); void control_w(u32 data); u8 m_pixel_clock; bool m_cursor_enable; //bool m_flyback; emu_timer *m_video_timer; emu_timer *m_sound_timer; std::unique_ptr m_data_vram; std::unique_ptr m_cursor_vram; // TODO: correct data vram size const u32 m_data_vram_mask = 0x1fffff; const u32 m_cursor_vram_mask = 0x7fff; const u32 m_data_vram_size = m_data_vram_mask+1; const u32 m_cursor_vram_size = m_cursor_vram_mask+1; void draw(bitmap_rgb32 &bitmap, const rectangle &cliprect, u8 *vram, u8 bpp, int xstart, int ystart, int xsize, int ysize, bool is_cursor); inline void update_4bpp_palette(u16 index, u32 paldata); u32 m_crtc_raw_horz[2]; inline u32 convert_crtc_hdisplay(u8 index); bool m_sound_frequency_test_bit; u8 m_stereo_image[8]; const float m_sound_input_gain = 0.05f; int16_t m_ulaw_lookup[256]; }; class acorn_vidc1_device : public acorn_vidc10_device { public: // construction/destruction acorn_vidc1_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock); }; class acorn_vidc1a_device : public acorn_vidc10_device { public: // construction/destruction acorn_vidc1a_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock); }; // device type definition DECLARE_DEVICE_TYPE(ACORN_VIDC1, acorn_vidc1_device) DECLARE_DEVICE_TYPE(ACORN_VIDC1A, acorn_vidc1a_device) class arm_vidc20_device : public acorn_vidc10_device { public: // construction/destruction arm_vidc20_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock); void write_dac32(u8 channel, u16 data); virtual bool get_dac_mode() override; protected: virtual void device_add_mconfig(machine_config &config) override; void regs_map(address_map &map); virtual u32 palette_entries() const noexcept override; virtual void device_start() override; virtual void device_reset() override; virtual void device_config_complete() override; u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); virtual u32 get_pixel_clock() override; private: void vidc20_pal_data_display_w(offs_t offset, u32 data); void vidc20_pal_data_index_w(u32 data); void vidc20_pal_data_cursor_w(offs_t offset, u32 data); void vidc20_crtc_w(offs_t offset, u32 data); void vidc20_control_w(u32 data); void vidc20_sound_frequency_w(u32 data); void vidc20_sound_control_w(u32 data); void fsynreg_w(u32 data); u8 m_pal_data_index; inline void update_8bpp_palette(u16 index, u32 paldata); bool m_dac_serial_mode; u8 m_pixel_source; u8 m_pixel_rate; u8 m_vco_r_modulo; u8 m_vco_v_modulo; required_device_array m_dac32; virtual void refresh_stereo_image(u8 channel) override; }; DECLARE_DEVICE_TYPE(ARM_VIDC20, arm_vidc20_device) //************************************************************************** // GLOBAL VARIABLES //************************************************************************** #endif // MAME_MACHINE_ACORN_VIDC_H