2ca4ead570
Misc ViRGE fixes. Changes to memory mapping. Changes to PCI handling. Disabled 'AMI WinBIOS 486 PCI' due to incomplete chipset emulation. Invalid GUS register reads no longer kill the emulator.
75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
typedef struct ega_t
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{
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mem_mapping_t mapping;
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rom_t bios_rom;
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uint8_t crtcreg;
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uint8_t crtc[32];
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uint8_t gdcreg[16];
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int gdcaddr;
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uint8_t attrregs[32];
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int attraddr, attrff;
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uint8_t seqregs[64];
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int seqaddr;
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uint8_t miscout;
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int vidclock;
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uint8_t la, lb, lc, ld;
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uint8_t stat;
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int fast;
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uint8_t colourcompare, colournocare;
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int readmode, writemode, readplane;
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int chain4;
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uint8_t writemask;
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uint32_t charseta, charsetb;
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uint8_t egapal[16];
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uint32_t *pallook;
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int vtotal, dispend, vsyncstart, split;
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int hdisp, htotal, hdisp_time, rowoffset;
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int lowres, interlace;
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int linedbl, rowcount;
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double clock;
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uint32_t ma_latch;
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int vres;
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int dispontime, dispofftime;
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int vidtime;
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uint8_t scrblank;
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int dispon;
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int hdisp_on;
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uint32_t ma, maback, ca;
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int vc;
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int sc;
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int linepos, vslines, linecountff, oddeven;
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int con, cursoron, blink;
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int scrollcache;
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int firstline, lastline;
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int firstline_draw, lastline_draw;
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int displine;
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uint8_t *vram;
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int vrammask;
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int video_res_x, video_res_y, video_bpp;
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} ega_t;
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void *ega_standalone_init();
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void ega_out(uint16_t addr, uint8_t val, void *p);
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uint8_t ega_in(uint16_t addr, void *p);
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void ega_poll(void *p);
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void ega_recalctimings(struct ega_t *ega);
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void ega_write(uint32_t addr, uint8_t val, void *p);
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uint8_t ega_read(uint32_t addr, void *p);
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extern device_t ega_device;
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