// 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" #include "sound/volt_reg.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: // construction/destruction acorn_vidc10_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); // I/O operations DECLARE_WRITE32_MEMBER( write ); DECLARE_READ_LINE_MEMBER( flyback_r ); auto vblank() { return m_vblank_cb.bind(); } auto sound_drq() { return m_sound_drq_cb.bind(); } // MEMC comms void write_vram(uint32_t offset, uint8_t data) { m_data_vram[offset & (m_data_vram_mask)] = data; } void write_cram(uint32_t offset, uint8_t data) { m_cursor_vram[offset & (m_cursor_vram_mask)] = data; } void write_dac(uint8_t channel, uint8_t data); void clear_dac(uint8_t 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; } uint32_t get_cursor_size() { return (m_crtc_regs[CRTC_VCER] - m_crtc_regs[CRTC_VCSR]) * (32/4); } protected: acorn_vidc10_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock); // device-level overrides //virtual void device_validity_check(validity_checker &valid) const override; virtual void device_add_mconfig(machine_config &config) override; virtual uint32_t palette_entries() const override; virtual void device_config_complete() override; 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; virtual space_config_vector memory_space_config() const override; u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); private: const address_space_config m_space_config; void regs_map(address_map &map); required_device m_lspeaker; required_device m_rspeaker; required_device_array m_dac; devcb_write_line m_vblank_cb; devcb_write_line m_sound_drq_cb; DECLARE_WRITE32_MEMBER( pal_data_display_w ); DECLARE_WRITE32_MEMBER( pal_data_cursor_w ); DECLARE_WRITE32_MEMBER( stereo_image_w ); DECLARE_WRITE32_MEMBER( crtc_w ); DECLARE_WRITE32_MEMBER( sound_frequency_w ); DECLARE_WRITE32_MEMBER( control_w ); uint8_t m_pixel_clock, m_bpp_mode, m_crtc_interlace; //bool m_flyback; enum { TIMER_VIDEO = 1, TIMER_SOUND = 2 }; emu_timer *m_video_timer; emu_timer *m_sound_timer; inline void screen_vblank_line_update(); void screen_dynamic_res_change(); 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 }; uint32_t m_crtc_regs[16]; u8 *m_data_vram; u8 *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; bool m_cursor_enable; void draw(bitmap_rgb32 &bitmap, const rectangle &cliprect, u8 *vram, uint8_t bpp, int xstart, int ystart, int xsize, int ysize, bool is_cursor); inline void update_4bpp_palette(uint16_t index, uint32_t paldata); u8 m_sound_frequency_latch; bool m_sound_frequency_test_bit; bool m_sound_mode; u8 m_stereo_image[8]; const float m_sound_input_gain = 0.05f; const int m_sound_max_channels = 8; int16_t m_ulaw_lookup[256]; void refresh_sound_frequency(); inline void refresh_stereo_image(uint8_t channel); }; class acorn_vidc10_lcd_device : public acorn_vidc10_device { public: // construction/destruction acorn_vidc10_lcd_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); protected: virtual void device_add_mconfig(machine_config &config) override; }; // device type definition DECLARE_DEVICE_TYPE(ACORN_VIDC10, acorn_vidc10_device) DECLARE_DEVICE_TYPE(ACORN_VIDC10_LCD, acorn_vidc10_lcd_device) //************************************************************************** // GLOBAL VARIABLES //************************************************************************** #endif // MAME_MACHINE_ACORN_VIDC10_H