9bc5f0dd05
S3: 1. Cleaned up the Short Stroke command processing. 2. Proceed calculating the error term only when it's equal or greater than the line length (Draw Line, Command 1 and also applies to Short Strokes, Command 0). 8514/A compatibles: 1. Reworked the polygon draw type A processing. 2. As with the S3, reworked the way error term is handled in the processing, and on Command 5 (Draw Polygon Boundary Line).
241 lines
5.3 KiB
C
241 lines
5.3 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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* Emulation of the 8514/A card from IBM for the MCA bus and
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* generic ISA bus clones without vendor extensions.
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*
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*
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*
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* Authors: TheCollector1995
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*
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* Copyright 2022 TheCollector1995.
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*/
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#ifndef VIDEO_8514A_H
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#define VIDEO_8514A_H
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typedef struct hwcursor8514_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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} hwcursor8514_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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} latch8514_t;
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typedef struct ibm8514_t {
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rom_t bios_rom;
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rom_t bios_rom2;
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mem_mapping_t bios_mapping;
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uint8_t *rom1;
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uint8_t *rom2;
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hwcursor8514_t hwcursor;
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hwcursor8514_t hwcursor_latch;
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uint8_t pos_regs[8];
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char *rom_path;
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int force_old_addr;
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int type;
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int local;
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int bpp;
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int on;
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int accel_bpp;
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uint32_t vram_size;
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uint32_t vram_mask;
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uint32_t pallook[512];
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uint32_t bios_addr;
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PALETTE vgapal;
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uint8_t hwcursor_oddeven;
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uint8_t dac_mask;
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uint8_t dac_status;
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uint32_t *map8;
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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 internal_pitch;
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int hwcursor_on;
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int modechange;
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uint64_t dispontime;
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uint64_t dispofftime;
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struct {
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uint16_t subsys_cntl;
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uint16_t setup_md;
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uint16_t advfunc_cntl;
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uint16_t cur_y;
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uint16_t cur_x;
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int16_t destx;
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int16_t desty;
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int16_t desty_axstp;
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int16_t destx_distp;
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int16_t err_term;
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int16_t maj_axis_pcnt;
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int16_t maj_axis_pcnt_no_limit;
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uint16_t cmd;
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uint16_t cmd_back;
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uint16_t short_stroke;
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uint16_t bkgd_color;
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uint16_t frgd_color;
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uint16_t wrt_mask;
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uint16_t rd_mask;
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uint16_t color_cmp;
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uint16_t bkgd_mix;
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uint16_t frgd_mix;
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uint16_t multifunc_cntl;
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uint16_t multifunc[16];
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uint16_t clip_right;
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uint16_t clip_bottom;
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int16_t clip_left;
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int16_t clip_top;
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uint8_t pix_trans[2];
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int poly_draw;
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int ssv_state;
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int x1;
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int x2;
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int x3;
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int y1;
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int y2;
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int temp_cnt;
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int16_t cx;
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int16_t cx_back;
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int16_t cy;
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int16_t oldcx;
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int16_t oldcy;
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int16_t sx;
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int16_t sy;
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int16_t dx;
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int16_t dy;
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int16_t err;
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uint32_t src;
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uint32_t dest;
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int x_count;
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int xx_count;
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int y_count;
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int input;
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int input2;
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int output;
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int output2;
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int ssv_len;
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int ssv_len_back;
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uint8_t ssv_dir;
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uint8_t ssv_draw;
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int odd_in;
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int odd_out;
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uint16_t scratch;
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int fill_state;
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int xdir;
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int ydir;
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int linedraw;
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uint32_t ge_offset;
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} accel;
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uint16_t test;
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int h_blankstart;
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int h_blank_end_val;
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int hblankstart;
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int hblank_end_val;
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int hblankend;
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int hblank_ext;
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int hblank_sub;
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int v_total_reg;
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int v_total;
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int dispend;
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int v_sync_start;
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int v_syncstart;
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int split;
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int h_disp;
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int h_total;
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int h_sync_width;
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int h_disp_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 linecountff;
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int vc;
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int linepos;
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int oddeven;
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int cursoron;
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int blink;
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int scrollcache;
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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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uint32_t ma;
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uint32_t maback;
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uint8_t *vram;
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uint8_t *changedvram;
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uint8_t linedbl;
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uint8_t data_available;
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uint8_t data_available2;
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uint8_t rowcount;
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int hsync_start;
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int hsync_width;
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int htotal;
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int hdisp;
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int hdisp2;
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int hdisped;
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int sc;
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int vsyncstart;
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int vsyncwidth;
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int vtotal;
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int v_disp;
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int v_disp2;
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int vdisp;
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int vdisp2;
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int disp_cntl;
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int interlace;
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uint8_t subsys_cntl;
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uint8_t subsys_stat;
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atomic_int fifo_idx;
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atomic_int ext_fifo_idx;
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atomic_int force_busy;
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atomic_int force_busy2;
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int blitter_busy;
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uint64_t blitter_time;
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uint64_t status_time;
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int pitch;
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int ext_pitch;
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int ext_crt_pitch;
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int extensions;
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int linear;
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uint32_t vram_amount;
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int vram_512k_8514;
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int vendor_mode;
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PALETTE _8514pal;
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latch8514_t latch;
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} ibm8514_t;
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#endif /*VIDEO_8514A_H*/
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