14ef3b75ac
1. As tiring as it seems, XOR properly the passthrough bits for mode changes. Fixes everything tested as of now (Mach8/32). 2. Implemented separate destination and source GE pitch and offsets. Fixes Windows 3.1 mach8/32 drivers using devicebitmap enabled (or dmp=1). 3. Properly fixed high and true color patterns so that the aforementioned patterns are drawn correctly in various stuff. 4. Implemented in the best possible way the CRT offset (currently in on conjunction with the GE offset). 5. On ScanToX with bpp set to 24 and dpconfig 0x6211, optmize the SRC/CUR X-Y coordinates at the end of the blit. 6. For mode changes, don't call the mode change recalctimings function if we aren't in the appropriate bits of the respective ports. 7. Separate 8514/A compatible and Extended foreground/background selection implemented, fixes Windows 3.x ATI Ultra drivers from 1992 without hacks. 8. Clear the busy flags when needed without stalling the entire guests (but not the emulator itself) (Mach8/32). 9. The MMIO regs should be enabled only when the VGA aperture has reached a graphics mode (0xA000). This fixes NT 3.x mach drivers in true color mode and making Win3.1 drivers working without a hitch at the same time. 10. Actually implement the hardware 4bpp cursor properly on Mach32. 11. Cosmetic cleanups.
272 lines
6.3 KiB
C
272 lines
6.3 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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#define INT_VSY (1 << 0)
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#define INT_GE_BSY (1 << 1)
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#define INT_FIFO_OVR (1 << 2)
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#define INT_FIFO_EMP (1 << 3)
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#define INT_MASK 0xf
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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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uint32_t ma_latch;
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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 advfunc_cntl_old;
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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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uint8_t bkgd_mix;
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uint8_t frgd_mix;
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uint8_t bkgd_sel;
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uint8_t frgd_sel;
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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 dx_ibm;
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int16_t dy_ibm;
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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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uint32_t src_ge_offset;
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uint32_t dst_ge_offset;
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uint16_t src_pitch;
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uint16_t dst_pitch;
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int64_t cur_x_24bpp;
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int64_t cur_y_24bpp;
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int64_t dest_x_24bpp;
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int64_t dest_y_24bpp;
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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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uint16_t subsys_cntl;
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uint8_t subsys_stat;
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atomic_int force_busy;
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atomic_int force_busy2;
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atomic_int fifo_idx;
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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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int _8514on;
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int _8514crt;
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PALETTE _8514pal;
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latch8514_t latch;
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void (*vblank_start)(void *priv);
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void (*accel_out_fifo)(void *priv, uint16_t port, uint16_t val, int len);
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void (*update_irqs)(void *priv);
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} ibm8514_t;
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#define IBM_8514A (((dev->local & 0xff) == 0x00) && (dev->extensions == 0x00))
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#define ATI_8514A_ULTRA (((dev->local & 0xff) == 0x00) && (dev->extensions == 0x01))
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#define ATI_GRAPHICS_ULTRA ((dev->local & 0xff) == 0x01)
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#define ATI_MACH32 ((dev->local & 0xff) == 0x02)
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#endif /*VIDEO_8514A_H*/
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