f81574b419
Moved the BT48x hardware cursor draw function to the RAMDAC's code where it belongs; Renamed the BT48x RAMDAC code file to vid_bt48x_ramdac.c (was vid_bt485_ramdac.c); Fixed BT48x 64x64 hardware cursor bugs (caused by the index variable being uint8_t when it should have been uint16_t) introduced in the previous commit.
163 lines
4.9 KiB
C
163 lines
4.9 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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* Version: @(#)vid_svga.h 1.0.15 2018/10/04
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*
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* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
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* Miran Grca, <mgrca8@gmail.com>
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*
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* Copyright 2008-2018 Sarah Walker.
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* Copyright 2016-2018 Miran Grca.
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*/
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typedef struct {
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int ena,
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x, y, xoff, yoff, xsize, ysize,
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v_acc, h_acc;
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uint32_t addr, pitch;
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} hwcursor_t;
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typedef struct svga_t
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{
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mem_mapping_t mapping;
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int enabled, fast, vidclock, fb_only,
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dac_addr, dac_pos, dac_r, dac_g,
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ramdac_type, ext_overscan,
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readmode, writemode, readplane, extvram,
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chain4, chain2_write, chain2_read,
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oddeven_page, oddeven_chain,
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set_reset_disabled,
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vtotal, dispend, vsyncstart, split, vblankstart,
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hdisp, hdisp_old, htotal, hdisp_time, rowoffset,
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lowres, interlace, linedbl, rowcount, bpp,
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dispon, hdisp_on,
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vc, sc, linepos, vslines, linecountff, oddeven,
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con, cursoron, blink, scrollcache,
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firstline, lastline, firstline_draw, lastline_draw,
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displine, fullchange,
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video_res_x, video_res_y, video_bpp, frames, fps,
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vram_display_mask,
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hwcursor_on, overlay_on,
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hwcursor_oddeven, overlay_oddeven;
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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, vram_max,
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vram_mask,
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charseta, charsetb,
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latch, ma_latch,
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ma, maback,
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write_bank, read_bank,
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banked_mask,
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ca, overscan_color,
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pallook[256];
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PALETTE vgapal;
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int64_t dispontime, dispofftime,
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vidtime;
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double clock;
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hwcursor_t hwcursor, hwcursor_latch,
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overlay, overlay_latch;
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void (*render)(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 *p);
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uint8_t (*video_in) (uint16_t addr, void *p);
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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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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 *p);
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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 *p;
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uint8_t crtc[128], gdcreg[64], attrregs[32], seqregs[64],
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egapal[16],
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*vram, *changedvram;
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uint8_t crtcreg, gdcaddr,
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attrff, attr_palette_enable, attraddr, seqaddr,
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miscout, cgastat, scrblank,
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plane_mask, writemask,
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colourcompare, colournocare,
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dac_mask, dac_status,
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ksc5601_sbyte_mask;
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void *ramdac, *clock_gen;
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} svga_t;
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extern int svga_init(svga_t *svga, void *p, 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 *p),
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void (*video_out)(uint16_t addr, uint8_t val, void *p),
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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 *p);
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uint16_t svga_readw(uint32_t addr, void *p);
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uint32_t svga_readl(uint32_t addr, void *p);
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void svga_write(uint32_t addr, uint8_t val, void *p);
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void svga_writew(uint32_t addr, uint16_t val, void *p);
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void svga_writel(uint32_t addr, uint32_t val, void *p);
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uint8_t svga_read_linear(uint32_t addr, void *p);
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uint8_t svga_readb_linear(uint32_t addr, void *p);
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uint16_t svga_readw_linear(uint32_t addr, void *p);
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uint32_t svga_readl_linear(uint32_t addr, void *p);
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void svga_write_linear(uint32_t addr, uint8_t val, void *p);
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void svga_writeb_linear(uint32_t addr, uint8_t val, void *p);
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void svga_writew_linear(uint32_t addr, uint16_t val, void *p);
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void svga_writel_linear(uint32_t addr, uint32_t val, void *p);
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void svga_add_status_info(char *s, int max_len, void *p);
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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 *p);
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uint8_t svga_in(uint16_t addr, void *p);
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svga_t *svga_get_pri();
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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 y1, int y2, 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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