1 // license:BSD-3-Clause 2 // copyright-holders:Barry Rodewald 3 /* 4 5 Cirrus Logic GD542x/3x video chipsets 6 7 */ 8 #ifndef MAME_VIDEO_CLGD542X_H 9 #define MAME_VIDEO_CLGD542X_H 10 11 #pragma once 12 13 #include "video/pc_vga.h" 14 15 class cirrus_gd5428_device : public svga_device 16 { 17 public: 18 // construction/destruction 19 cirrus_gd5428_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); 20 21 virtual uint8_t port_03c0_r(offs_t offset) override; 22 virtual void port_03c0_w(offs_t offset, uint8_t data) override; 23 virtual uint8_t port_03b0_r(offs_t offset) override; 24 virtual void port_03b0_w(offs_t offset, uint8_t data) override; 25 virtual uint8_t port_03d0_r(offs_t offset) override; 26 virtual void port_03d0_w(offs_t offset, uint8_t data) override; 27 virtual uint8_t mem_r(offs_t offset) override; 28 virtual void mem_w(offs_t offset, uint8_t data) override; 29 30 virtual uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) override; 31 32 protected: 33 cirrus_gd5428_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock); 34 35 // device-level overrides 36 virtual void device_start() override; 37 virtual void device_reset() override; 38 virtual uint16_t offset() override; 39 40 uint8_t m_chip_id; 41 42 uint8_t gc_mode_ext; 43 uint8_t gc_bank_0; 44 uint8_t gc_bank_1; 45 bool gc_locked; 46 uint8_t m_lock_reg; 47 uint8_t m_gr10; // high byte of background colour (in 15/16bpp) 48 uint8_t m_gr11; // high byte of foreground colour (in 15/16bpp) 49 50 uint8_t m_cr19; 51 uint8_t m_cr1a; 52 uint8_t m_cr1b; 53 54 // hardware cursor 55 uint16_t m_cursor_x; 56 uint16_t m_cursor_y; 57 uint16_t m_cursor_addr; 58 uint8_t m_cursor_attr; 59 bool m_ext_palette_enabled; 60 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 61 62 // BitBLT engine 63 uint8_t m_blt_status; 64 uint8_t m_blt_rop; 65 uint8_t m_blt_mode; 66 uint32_t m_blt_source; 67 uint32_t m_blt_dest; 68 uint16_t m_blt_source_pitch; 69 uint16_t m_blt_dest_pitch; 70 uint16_t m_blt_height; 71 uint16_t m_blt_width; 72 uint32_t m_blt_source_current; 73 uint32_t m_blt_dest_current; 74 uint16_t m_blt_trans_colour; 75 uint16_t m_blt_trans_colour_mask; 76 77 bool m_blt_system_transfer; // blit from system memory 78 uint8_t m_blt_system_count; 79 uint32_t m_blt_system_buffer; 80 uint16_t m_blt_pixel_count; 81 uint16_t m_blt_scan_count; 82 83 uint8_t m_scratchpad1; 84 uint8_t m_scratchpad2; 85 uint8_t m_scratchpad3; 86 uint8_t m_vclk_num[4]; 87 uint8_t m_vclk_denom[4]; 88 89 inline uint8_t cirrus_vga_latch_write(int offs, uint8_t data); 90 91 void pcvideo_cirrus_gd5428(machine_config &config); 92 void pcvideo_cirrus_gd5430(machine_config &config); 93 94 private: 95 void cirrus_define_video_mode(); 96 uint8_t cirrus_seq_reg_read(uint8_t index); 97 void cirrus_seq_reg_write(uint8_t index, uint8_t data); 98 uint8_t cirrus_gc_reg_read(uint8_t index); 99 void cirrus_gc_reg_write(uint8_t index, uint8_t data); 100 uint8_t cirrus_crtc_reg_read(uint8_t index); 101 void cirrus_crtc_reg_write(uint8_t index, uint8_t data); 102 103 void start_bitblt(); 104 void start_reverse_bitblt(); 105 void start_system_bitblt(); 106 void blit_dword(); 107 void blit_byte(); // used for colour expanded system-to-vram bitblts 108 void copy_pixel(uint8_t src, uint8_t dst); 109 }; 110 111 class cirrus_gd5430_device : public cirrus_gd5428_device 112 { 113 public: 114 cirrus_gd5430_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); 115 116 protected: 117 virtual void device_start() override; 118 }; 119 120 class cirrus_gd5446_device : public cirrus_gd5428_device 121 { 122 public: 123 cirrus_gd5446_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); 124 125 protected: 126 virtual void device_start() override; 127 }; 128 129 130 // device type definition 131 DECLARE_DEVICE_TYPE(CIRRUS_GD5428, cirrus_gd5428_device) 132 DECLARE_DEVICE_TYPE(CIRRUS_GD5430, cirrus_gd5430_device) 133 DECLARE_DEVICE_TYPE(CIRRUS_GD5446, cirrus_gd5446_device) 134 135 #endif // MAME_VIDEO_CLGD542X_H 136