cf49686957
Mix patterns are drawn at the correct position now instead of backwards. Better handling of subsys/subcntl side. As usual, better handling of the VGA on/off passthrough. Better handling of the accelerator pitch (TODO: need a way to properly identify 640x480x256 in the pitch side).
114 lines
3.1 KiB
C
114 lines
3.1 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 ibm8514_t {
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uint8_t pos_regs[8];
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int force_old_addr;
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int type;
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uint32_t vram_size;
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uint32_t vram_mask;
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PALETTE vgapal;
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uint8_t dac_mask, dac_status;
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uint32_t *map8;
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int dac_addr, dac_pos, dac_r, dac_g;
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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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uint8_t advfunc_cntl, ext_advfunc_cntl;
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uint16_t cur_y, cur_y_bitres;
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uint16_t cur_x, cur_x_bitres;
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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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uint16_t cmd, 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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int16_t clip_left, 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, x2, y1, y2;
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int sys_cnt, sys_cnt2;
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int temp_cnt;
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int16_t cx, cy, oldcy;
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int16_t sx, sy;
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int16_t dx, dy;
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int16_t err;
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uint32_t src, dest;
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uint32_t newsrc_blt, newdest_blt;
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uint32_t newdest_in, newdest_out;
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uint8_t *writemono, *nibbleset;
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int x_count, xx_count, y_count;
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int input, output;
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uint16_t cur_x_bit12, cur_y_bit12;
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int ssv_len;
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uint8_t ssv_dir;
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uint8_t ssv_draw;
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int odd_in, odd_out;
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uint16_t scratch;
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int fill_state, xdir, ydir;
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} accel;
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uint16_t test;
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int ibm_mode;
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int v_total, dispend, v_syncstart, split,
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h_disp, h_disp_old, h_total, h_disp_time, rowoffset,
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dispon, hdisp_on, linecountff,
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vc, linepos, oddeven, cursoron, blink, scrollcache,
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firstline, lastline, firstline_draw, lastline_draw,
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displine, fullchange, x_add, y_add;
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uint32_t ma, maback;
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uint8_t *vram, *changedvram, linedbl;
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uint8_t data_available, data_available2;
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uint8_t scanmodulos, rowcount;
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int htotal, hdisp, vtadj, vdadj, vsadj, sc,
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vtb, vdb, vsb, vsyncstart, vsyncwidth;
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int vtotal, vdisp;
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int disp_cntl, interlace;
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uint8_t subsys_cntl, subsys_stat;
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volatile int force_busy, 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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} ibm8514_t;
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#endif /*VIDEO_8514A_H*/
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