// license:BSD-3-Clause // copyright-holders:Barry Rodewald /* Cirrus Logic GD542x/3x video chipsets */ #ifndef MAME_VIDEO_CLGD542X_H #define MAME_VIDEO_CLGD542X_H #pragma once #include "video/pc_vga.h" class cirrus_gd5428_device : public svga_device { public: // construction/destruction cirrus_gd5428_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); virtual READ8_MEMBER(port_03c0_r) override; virtual WRITE8_MEMBER(port_03c0_w) override; virtual READ8_MEMBER(port_03b0_r) override; virtual WRITE8_MEMBER(port_03b0_w) override; virtual READ8_MEMBER(port_03d0_r) override; virtual WRITE8_MEMBER(port_03d0_w) override; virtual READ8_MEMBER(mem_r) override; virtual WRITE8_MEMBER(mem_w) override; virtual uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) override; protected: cirrus_gd5428_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 uint16_t offset() override; uint8_t m_chip_id; uint8_t gc_mode_ext; uint8_t gc_bank_0; uint8_t gc_bank_1; bool gc_locked; uint8_t m_lock_reg; uint8_t m_gr10; // high byte of background colour (in 15/16bpp) uint8_t m_gr11; // high byte of foreground colour (in 15/16bpp) uint8_t m_cr19; uint8_t m_cr1a; uint8_t m_cr1b; // hardware cursor uint16_t m_cursor_x; uint16_t m_cursor_y; uint16_t m_cursor_addr; uint8_t m_cursor_attr; bool m_ext_palette_enabled; struct { uint8_t red, green, blue; } m_ext_palette[16]; // extra palette, colour 0 is cursor background, colour 15 is cursor foreground, colour 2 is overscan border colour // BitBLT engine uint8_t m_blt_status; uint8_t m_blt_rop; uint8_t m_blt_mode; uint32_t m_blt_source; uint32_t m_blt_dest; uint16_t m_blt_source_pitch; uint16_t m_blt_dest_pitch; uint16_t m_blt_height; uint16_t m_blt_width; uint32_t m_blt_source_current; uint32_t m_blt_dest_current; uint16_t m_blt_trans_colour; uint16_t m_blt_trans_colour_mask; bool m_blt_system_transfer; // blit from system memory uint8_t m_blt_system_count; uint32_t m_blt_system_buffer; uint16_t m_blt_pixel_count; uint16_t m_blt_scan_count; uint8_t m_scratchpad1; uint8_t m_scratchpad2; uint8_t m_scratchpad3; uint8_t m_vclk_num[4]; uint8_t m_vclk_denom[4]; inline uint8_t cirrus_vga_latch_write(int offs, uint8_t data); void pcvideo_cirrus_gd5428(machine_config &config); void pcvideo_cirrus_gd5430(machine_config &config); private: void cirrus_define_video_mode(); uint8_t cirrus_seq_reg_read(uint8_t index); void cirrus_seq_reg_write(uint8_t index, uint8_t data); uint8_t cirrus_gc_reg_read(uint8_t index); void cirrus_gc_reg_write(uint8_t index, uint8_t data); uint8_t cirrus_crtc_reg_read(uint8_t index); void cirrus_crtc_reg_write(uint8_t index, uint8_t data); void start_bitblt(); void start_reverse_bitblt(); void start_system_bitblt(); void blit_dword(); void blit_byte(); // used for colour expanded system-to-vram bitblts void copy_pixel(uint8_t src, uint8_t dst); }; class cirrus_gd5430_device : public cirrus_gd5428_device { public: cirrus_gd5430_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); protected: virtual void device_start() override; }; class cirrus_gd5446_device : public cirrus_gd5428_device { public: cirrus_gd5446_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); protected: virtual void device_start() override; }; // device type definition DECLARE_DEVICE_TYPE(CIRRUS_GD5428, cirrus_gd5428_device) DECLARE_DEVICE_TYPE(CIRRUS_GD5430, cirrus_gd5430_device) DECLARE_DEVICE_TYPE(CIRRUS_GD5446, cirrus_gd5446_device) #endif // MAME_VIDEO_CLGD542X_H