433 lines
14 KiB
C
433 lines
14 KiB
C
/*
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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*
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* This file is part of the 86Box distribution.
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*
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* Generic SVGA handling.
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*
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*
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*
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* Authors: Sarah Walker, <https://pcem-emulator.co.uk/>
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* Miran Grca, <mgrca8@gmail.com>
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*
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* Copyright 2008-2020 Sarah Walker.
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* Copyright 2016-2020 Miran Grca.
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*/
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#ifndef VIDEO_SVGA_H
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# define VIDEO_SVGA_H
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# define FLAG_EXTRA_BANKS 1
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# define FLAG_ADDR_BY8 2
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# define FLAG_EXT_WRITE 4
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# define FLAG_LATCH8 8
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# define FLAG_NOSKEW 16
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# define FLAG_ADDR_BY16 32
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# define FLAG_RAMDAC_SHIFT 64
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# define FLAG_ATI 128
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# define FLAG_S3_911_16BIT 256
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# define FLAG_512K_MASK 512
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struct monitor_t;
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typedef struct hwcursor_t {
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int ena;
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int x;
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int y;
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int xoff;
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int yoff;
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int cur_xsize;
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int cur_ysize;
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int v_acc;
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int h_acc;
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uint32_t addr;
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uint32_t pitch;
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} hwcursor_t;
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typedef union {
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uint64_t q;
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uint32_t d[2];
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uint16_t w[4];
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uint8_t b[8];
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} latch_t;
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typedef struct svga_t {
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mem_mapping_t mapping;
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uint8_t fast;
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uint8_t chain4;
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uint8_t chain2_write;
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uint8_t chain2_read;
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uint8_t ext_overscan;
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uint8_t bus_size;
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uint8_t lowres;
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uint8_t interlace;
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uint8_t linedbl;
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uint8_t rowcount;
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uint8_t set_reset_disabled;
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uint8_t bpp;
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uint8_t ramdac_type;
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uint8_t fb_only;
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uint8_t readmode;
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uint8_t writemode;
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uint8_t readplane;
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uint8_t hwcursor_oddeven;
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uint8_t dac_hwcursor_oddeven;
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uint8_t overlay_oddeven;
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uint8_t fcr;
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uint8_t hblank_overscan;
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int dac_addr;
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int dac_pos;
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int dac_r;
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int dac_g;
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int dac_b;
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int vtotal;
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int dispend;
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int vsyncstart;
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int split;
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int vblankstart;
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int hdisp;
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int hdisp_old;
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int htotal;
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int hdisp_time;
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int rowoffset;
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int dispon;
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int hdisp_on;
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int vc;
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int sc;
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int linepos;
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int vslines;
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int linecountff;
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int oddeven;
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int con;
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int cursoron;
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int blink;
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int scrollcache;
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int char_width;
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int firstline;
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int lastline;
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int firstline_draw;
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int lastline_draw;
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int displine;
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int fullchange;
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int x_add;
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int y_add;
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int pan;
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int vram_display_mask;
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int vidclock;
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int dots_per_clock;
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int hblank_ext;
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int hwcursor_on;
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int dac_hwcursor_on;
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int overlay_on;
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int set_override;
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int hblankstart;
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int hblankend;
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int hblank_sub;
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int hblank_end_val;
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int hblank_end_len;
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/*The three variables below allow us to implement memory maps like that seen on a 1MB Trio64 :
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0MB-1MB - VRAM
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1MB-2MB - VRAM mirror
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2MB-4MB - open bus
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4MB-xMB - mirror of above
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For the example memory map, decode_mask would be 4MB-1 (4MB address space), vram_max would be 2MB
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(present video memory only responds to first 2MB), vram_mask would be 1MB-1 (video memory wraps at 1MB)
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*/
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uint32_t decode_mask;
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uint32_t vram_max;
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uint32_t vram_mask;
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uint32_t charseta;
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uint32_t charsetb;
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uint32_t adv_flags;
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uint32_t ma_latch;
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uint32_t ca_adj;
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uint32_t ma;
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uint32_t maback;
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uint32_t write_bank;
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uint32_t read_bank;
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uint32_t extra_banks[2];
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uint32_t banked_mask;
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uint32_t ca;
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uint32_t overscan_color;
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uint32_t *map8;
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uint32_t pallook[512];
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PALETTE vgapal;
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uint64_t dispontime;
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uint64_t dispofftime;
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latch_t latch;
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pc_timer_t timer;
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double clock;
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hwcursor_t hwcursor;
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hwcursor_t hwcursor_latch;
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hwcursor_t dac_hwcursor;
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hwcursor_t dac_hwcursor_latch;
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hwcursor_t overlay;
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hwcursor_t overlay_latch;
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void (*render)(struct svga_t *svga);
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void (*render8514)(struct svga_t *svga);
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void (*recalctimings_ex)(struct svga_t *svga);
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void (*video_out)(uint16_t addr, uint8_t val, void *priv);
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uint8_t (*video_in)(uint16_t addr, void *priv);
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void (*hwcursor_draw)(struct svga_t *svga, int displine);
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void (*dac_hwcursor_draw)(struct svga_t *svga, int displine);
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void (*overlay_draw)(struct svga_t *svga, int displine);
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void (*vblank_start)(struct svga_t *svga);
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void (*ven_write)(struct svga_t *svga, uint8_t val, uint32_t addr);
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float (*getclock)(int clock, void *priv);
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/* Called when VC=R18 and friends. If this returns zero then MA resetting
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is skipped. Matrox Mystique in Power mode reuses this counter for
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vertical line interrupt*/
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int (*line_compare)(struct svga_t *svga);
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/*Called at the start of vertical sync*/
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void (*vsync_callback)(struct svga_t *svga);
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uint32_t (*translate_address)(uint32_t addr, void *priv);
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/*If set then another device is driving the monitor output and the SVGA
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card should not attempt to display anything */
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int override;
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void *priv;
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uint8_t crtc[256];
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uint8_t gdcreg[256];
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uint8_t attrregs[32];
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uint8_t seqregs[256];
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uint8_t egapal[16];
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uint8_t *vram;
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uint8_t *changedvram;
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uint8_t crtcreg;
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uint8_t gdcaddr;
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uint8_t attrff;
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uint8_t attr_palette_enable;
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uint8_t attraddr;
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uint8_t seqaddr;
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uint8_t miscout;
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uint8_t cgastat;
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uint8_t scrblank;
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uint8_t plane_mask;
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uint8_t writemask;
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uint8_t colourcompare;
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uint8_t colournocare;
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uint8_t dac_mask;
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uint8_t dac_status;
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uint8_t dpms;
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uint8_t dpms_ui;
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uint8_t ksc5601_sbyte_mask;
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uint8_t ksc5601_udc_area_msb[2];
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int ksc5601_swap_mode;
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uint16_t ksc5601_english_font_type;
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int vertical_linedbl;
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/*Used to implement CRTC[0x17] bit 2 hsync divisor*/
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int hsync_divisor;
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/*Tseng-style chain4 mode - CRTC dword mode is the same as byte mode, chain4
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addresses are shifted to match*/
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int packed_chain4;
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/*Force CRTC to dword mode, regardless of CR14/CR17. Required for S3 enhanced mode*/
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int force_dword_mode;
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int force_old_addr;
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int remap_required;
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uint32_t (*remap_func)(struct svga_t *svga, uint32_t in_addr);
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void *ramdac;
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void *clock_gen;
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/* Monitor Index */
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uint8_t monitor_index;
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/* Pointer to monitor */
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monitor_t *monitor;
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void * dev8514;
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void * xga;
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} svga_t;
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extern int vga_on;
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extern void ibm8514_poll(void *priv, svga_t *svga);
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extern void ibm8514_recalctimings(svga_t *svga);
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extern uint8_t ibm8514_ramdac_in(uint16_t port, void *priv);
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extern void ibm8514_ramdac_out(uint16_t port, uint8_t val, void *priv);
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extern int ibm8514_cpu_src(svga_t *svga);
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extern int ibm8514_cpu_dest(svga_t *svga);
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extern void ibm8514_accel_out_pixtrans(svga_t *svga, uint16_t port, uint16_t val, int len);
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extern void ibm8514_short_stroke_start(int count, int cpu_input, uint32_t mix_dat, uint32_t cpu_dat, svga_t *svga, uint8_t ssv, int len);
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extern void ibm8514_accel_start(int count, int cpu_input, uint32_t mix_dat, uint32_t cpu_dat, svga_t *svga, int len);
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extern void xga_poll(void *priv, svga_t *svga);
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extern void xga_recalctimings(svga_t *svga);
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extern int svga_init(const device_t *info, svga_t *svga, void *priv, int memsize,
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void (*recalctimings_ex)(struct svga_t *svga),
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uint8_t (*video_in)(uint16_t addr, void *priv),
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void (*video_out)(uint16_t addr, uint8_t val, void *priv),
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void (*hwcursor_draw)(struct svga_t *svga, int displine),
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void (*overlay_draw)(struct svga_t *svga, int displine));
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extern void svga_recalctimings(svga_t *svga);
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extern void svga_close(svga_t *svga);
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uint8_t svga_read(uint32_t addr, void *priv);
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uint16_t svga_readw(uint32_t addr, void *priv);
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uint32_t svga_readl(uint32_t addr, void *priv);
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void svga_write(uint32_t addr, uint8_t val, void *priv);
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void svga_writew(uint32_t addr, uint16_t val, void *priv);
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void svga_writel(uint32_t addr, uint32_t val, void *priv);
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uint8_t svga_read_linear(uint32_t addr, void *priv);
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uint8_t svga_readb_linear(uint32_t addr, void *priv);
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uint16_t svga_readw_linear(uint32_t addr, void *priv);
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uint32_t svga_readl_linear(uint32_t addr, void *priv);
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void svga_write_linear(uint32_t addr, uint8_t val, void *priv);
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void svga_writeb_linear(uint32_t addr, uint8_t val, void *priv);
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void svga_writew_linear(uint32_t addr, uint16_t val, void *priv);
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void svga_writel_linear(uint32_t addr, uint32_t val, void *priv);
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void svga_add_status_info(char *s, int max_len, void *priv);
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extern uint8_t svga_rotate[8][256];
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void svga_out(uint16_t addr, uint8_t val, void *priv);
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uint8_t svga_in(uint16_t addr, void *priv);
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svga_t *svga_get_pri(void);
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void svga_set_override(svga_t *svga, int val);
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void svga_set_ramdac_type(svga_t *svga, int type);
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void svga_close(svga_t *svga);
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uint32_t svga_mask_addr(uint32_t addr, svga_t *svga);
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uint32_t svga_mask_changedaddr(uint32_t addr, svga_t *svga);
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void svga_doblit(int wx, int wy, svga_t *svga);
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enum {
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RAMDAC_6BIT = 0,
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RAMDAC_8BIT
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};
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/* We need a way to add a device with a pointer to a parent device so it can attach itself to it, and
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possibly also a second ATi 68860 RAM DAC type that auto-sets SVGA render on RAM DAC render change. */
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extern void ati68860_ramdac_out(uint16_t addr, uint8_t val, void *priv, svga_t *svga);
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extern uint8_t ati68860_ramdac_in(uint16_t addr, void *priv, svga_t *svga);
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extern void ati68860_set_ramdac_type(void *priv, int type);
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extern void ati68860_ramdac_set_render(void *priv, svga_t *svga);
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extern void ati68860_ramdac_set_pallook(void *priv, int i, uint32_t col);
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extern void ati68860_hwcursor_draw(svga_t *svga, int displine);
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extern void ati68875_ramdac_out(uint16_t addr, int rs2, int rs3, uint8_t val, void *priv, svga_t *svga);
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extern uint8_t ati68875_ramdac_in(uint16_t addr, int rs2, int rs3, void *priv, svga_t *svga);
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extern void att49x_ramdac_out(uint16_t addr, int rs2, uint8_t val, void *priv, svga_t *svga);
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extern uint8_t att49x_ramdac_in(uint16_t addr, int rs2, void *priv, svga_t *svga);
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extern void att498_ramdac_out(uint16_t addr, int rs2, uint8_t val, void *priv, svga_t *svga);
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extern uint8_t att498_ramdac_in(uint16_t addr, int rs2, void *priv, svga_t *svga);
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extern float av9194_getclock(int clock, void *priv);
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extern void bt48x_ramdac_out(uint16_t addr, int rs2, int rs3, uint8_t val, void *priv, svga_t *svga);
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extern uint8_t bt48x_ramdac_in(uint16_t addr, int rs2, int rs3, void *priv, svga_t *svga);
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extern void bt48x_recalctimings(void *priv, svga_t *svga);
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extern void bt48x_hwcursor_draw(svga_t *svga, int displine);
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extern void ibm_rgb528_ramdac_out(uint16_t addr, int rs2, uint8_t val, void *priv, svga_t *svga);
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extern uint8_t ibm_rgb528_ramdac_in(uint16_t addr, int rs2, void *priv, svga_t *svga);
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extern void ibm_rgb528_recalctimings(void *priv, svga_t *svga);
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extern void ibm_rgb528_hwcursor_draw(svga_t *svga, int displine);
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extern void icd2061_write(void *priv, int val);
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extern float icd2061_getclock(int clock, void *priv);
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/* The code is the same, the #define's are so that the correct name can be used. */
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# define ics9161_write icd2061_write
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# define ics9161_getclock icd2061_getclock
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extern float ics2494_getclock(int clock, void *priv);
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extern void ics2595_write(void *priv, int strobe, int dat);
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extern double ics2595_getclock(void *priv);
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extern void ics2595_setclock(void *priv, double clock);
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extern void sc1148x_ramdac_out(uint16_t addr, int rs2, uint8_t val, void *priv, svga_t *svga);
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extern uint8_t sc1148x_ramdac_in(uint16_t addr, int rs2, void *priv, svga_t *svga);
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extern void sc1502x_ramdac_out(uint16_t addr, uint8_t val, void *priv, svga_t *svga);
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extern uint8_t sc1502x_ramdac_in(uint16_t addr, void *priv, svga_t *svga);
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extern void sdac_ramdac_out(uint16_t addr, int rs2, uint8_t val, void *priv, svga_t *svga);
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extern uint8_t sdac_ramdac_in(uint16_t addr, int rs2, void *priv, svga_t *svga);
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extern float sdac_getclock(int clock, void *priv);
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extern void stg_ramdac_out(uint16_t addr, uint8_t val, void *priv, svga_t *svga);
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extern uint8_t stg_ramdac_in(uint16_t addr, void *priv, svga_t *svga);
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extern float stg_getclock(int clock, void *priv);
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extern void tkd8001_ramdac_out(uint16_t addr, uint8_t val, void *priv, svga_t *svga);
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extern uint8_t tkd8001_ramdac_in(uint16_t addr, void *priv, svga_t *svga);
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extern void tvp3026_ramdac_out(uint16_t addr, int rs2, int rs3, uint8_t val, void *priv, svga_t *svga);
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extern uint8_t tvp3026_ramdac_in(uint16_t addr, int rs2, int rs3, void *priv, svga_t *svga);
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extern void tvp3026_recalctimings(void *priv, svga_t *svga);
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extern void tvp3026_hwcursor_draw(svga_t *svga, int displine);
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extern float tvp3026_getclock(int clock, void *priv);
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# ifdef EMU_DEVICE_H
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extern const device_t ati68860_ramdac_device;
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extern const device_t ati68875_ramdac_device;
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extern const device_t att490_ramdac_device;
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extern const device_t att491_ramdac_device;
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extern const device_t att492_ramdac_device;
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extern const device_t att498_ramdac_device;
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extern const device_t av9194_device;
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extern const device_t bt484_ramdac_device;
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extern const device_t att20c504_ramdac_device;
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extern const device_t bt485_ramdac_device;
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extern const device_t att20c505_ramdac_device;
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extern const device_t bt485a_ramdac_device;
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extern const device_t gendac_ramdac_device;
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extern const device_t ibm_rgb528_ramdac_device;
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extern const device_t ics2494an_305_device;
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extern const device_t ati18810_device;
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extern const device_t ati18811_0_device;
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extern const device_t ati18811_1_device;
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extern const device_t ics2595_device;
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extern const device_t icd2061_device;
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extern const device_t ics9161_device;
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extern const device_t sc11483_ramdac_device;
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extern const device_t sc11487_ramdac_device;
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extern const device_t sc11486_ramdac_device;
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extern const device_t sc11484_nors2_ramdac_device;
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extern const device_t sc1502x_ramdac_device;
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extern const device_t sdac_ramdac_device;
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extern const device_t stg_ramdac_device;
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extern const device_t tkd8001_ramdac_device;
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extern const device_t tseng_ics5301_ramdac_device;
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extern const device_t tseng_ics5341_ramdac_device;
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extern const device_t tvp3026_ramdac_device;
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# endif
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#endif /*VIDEO_SVGA_H*/
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