vgainit.c

来自「RTEMS (Real-Time Executive for Multiproc」· C语言 代码 · 共 767 行 · 第 1/2 页

  { OUT, SEQREG, 1, SEQVAL, 1 },
  { OUT, SEQREG, 2, SEQVAL, 0x0f },
  { OUT, SEQREG, 3, SEQVAL, 0 },
  { OUT, SEQREG, 4, SEQVAL, 6 },

  /* Misc out reg */
  { OUT, GENREG1, 0xe3, 0, 0 },

  /* Sequencer enable */
  { OUT, SEQREG, 0, SEQVAL, 0x03 },

  /* Unprotect crtc regs 0-7 */
  { OUT, CRTCREG, 0x11, CRTCVAL, 0 },

  /* Crtc */
  { OUT, CRTCREG, 0, CRTCVAL, 0x5f },
  { OUT, CRTCREG, 1, CRTCVAL, 0x4f },
  { OUT, CRTCREG, 2, CRTCVAL, 0x50 },
  { OUT, CRTCREG, 3, CRTCVAL, 0x82 },
  { OUT, CRTCREG, 4, CRTCVAL, 0x54 },
  { OUT, CRTCREG, 5, CRTCVAL, 0x80 },
  { OUT, CRTCREG, 6, CRTCVAL, 0x0b },
  { OUT, CRTCREG, 7, CRTCVAL, 0x3e },
  { OUT, CRTCREG, 8, CRTCVAL, 0x00 },
  { OUT, CRTCREG, 9, CRTCVAL, 0x40 },
  { OUT, CRTCREG, 10, CRTCVAL, 0x00 },
  { OUT, CRTCREG, 11, CRTCVAL, 0x00 },
  { OUT, CRTCREG, 12, CRTCVAL, 0x00 },
  { OUT, CRTCREG, 13, CRTCVAL, 0x00 },
  { OUT, CRTCREG, 14, CRTCVAL, 0x00 },
  { OUT, CRTCREG, 15, CRTCVAL, 0x59 },
  { OUT, CRTCREG, 16, CRTCVAL, 0xea },
  { OUT, CRTCREG, 17, CRTCVAL, 0x8c },
  { OUT, CRTCREG, 18, CRTCVAL, 0xdf },
  { OUT, CRTCREG, 19, CRTCVAL, 0x28 },
  { OUT, CRTCREG, 20, CRTCVAL, 0x00 },
  { OUT, CRTCREG, 21, CRTCVAL, 0xe7 },
  { OUT, CRTCREG, 22, CRTCVAL, 0x04 },
  { OUT, CRTCREG, 23, CRTCVAL, 0xe3 },
  { OUT, CRTCREG, 24, CRTCVAL, 0xff },

  /* Graphics controller */
  { OUT, GENREG2, 0x00, 0, 0 },
  { OUT, GENREG3, 0x01, 0, 0 },
  { OUT, GRREG, 0, GRVAL, 0x00 },
  { OUT, GRREG, 1, GRVAL, 0x00 },
  { OUT, GRREG, 2, GRVAL, 0x00 },
  { OUT, GRREG, 3, GRVAL, 0x00 },
  { OUT, GRREG, 4, GRVAL, 0x00 },
  { OUT, GRREG, 5, GRVAL, 0x00 },
  { OUT, GRREG, 6, GRVAL, 0x05 },
  { OUT, GRREG, 7, GRVAL, 0x0f },
  { OUT, GRREG, 8, GRVAL, 0xff },

  /* Reset attribute flip/flop */
  { IN, ATTRREG, 0, 0, 0 },

  /* Palette */
  { OUT, PALREG, 0, PALREG, 0x00 },
  { OUT, PALREG, 1, PALREG, 0x01 },
  { OUT, PALREG, 2, PALREG, 0x02 },
  { OUT, PALREG, 3, PALREG, 0x03 },
  { OUT, PALREG, 4, PALREG, 0x04 },
  { OUT, PALREG, 5, PALREG, 0x05 },
  { OUT, PALREG, 6, PALREG, 0x06 },
  { OUT, PALREG, 7, PALREG, 0x07 },
  { OUT, PALREG, 8, PALREG, 0x38 },
  { OUT, PALREG, 9, PALREG, 0x39 },
  { OUT, PALREG, 10, PALREG, 0x3a },
  { OUT, PALREG, 11, PALREG, 0x3b },
  { OUT, PALREG, 12, PALREG, 0x3c },
  { OUT, PALREG, 13, PALREG, 0x3d },
  { OUT, PALREG, 14, PALREG, 0x3e },
  { OUT, PALREG, 15, PALREG, 0x3f },
  { OUT, PALREG, 16, PALREG, 0x01 },
  { OUT, PALREG, 17, PALREG, 0x00 },
  { OUT, PALREG, 18, PALREG, 0x0f },
  { OUT, PALREG, 19, PALREG, 0x00 },

  /* Enable palette */
  { OUT, PALREG, 0x20, 0, 0 },

  /* End of table */
  { DONE, 0, 0, 0, 0 }
};


/* VGA 80x25 text (BIOS mode 3).
 */
static REGIO graph_off[] = {
  /* Reset attr F/F */
  { IN, ATTRREG, 0, 0, 0 },

  /* Disable palette */
  { OUT, PALREG, 0, 0, 0 },

  /* Reset sequencer regs */
  { OUT, SEQREG, 0, SEQVAL, 1 },
  { OUT, SEQREG, 1, SEQVAL, 1 },
  { OUT, SEQREG, 2, SEQVAL, 3 },
  { OUT, SEQREG, 3, SEQVAL, 0 },
  { OUT, SEQREG, 4, SEQVAL, 2 },

  /* Misc out reg */
  { OUT, GENREG1, 0x63, 0, 0 },

  /* Sequencer enable */
  { OUT, SEQREG, 0, SEQVAL, 3 },

  /* Unprotect crtc regs 0-7 */
  { OUT, CRTCREG, 0x11, CRTCVAL, 0 },

  /* Crtc */
  { OUT, CRTCREG, 0, CRTCVAL, 0x5f },	/* horiz total */
  { OUT, CRTCREG, 1, CRTCVAL, 0x4f },	/* horiz end */
  { OUT, CRTCREG, 2, CRTCVAL, 0x50 },	/* horiz blank */
  { OUT, CRTCREG, 3, CRTCVAL, 0x82 },	/* end blank */
  { OUT, CRTCREG, 4, CRTCVAL, 0x55 },	/* horiz retrace */
  { OUT, CRTCREG, 5, CRTCVAL, 0x81 },	/* end retrace */
  { OUT, CRTCREG, 6, CRTCVAL, 0xbf },	/* vert total */
  { OUT, CRTCREG, 7, CRTCVAL, 0x1f },	/* overflows */
  { OUT, CRTCREG, 8, CRTCVAL, 0x00 },	/* row scan */
  { OUT, CRTCREG, 9, CRTCVAL, 0x4f },	/* max scan line */
  { OUT, CRTCREG, 10, CRTCVAL, 0x00 },	/* cursor start */
  { OUT, CRTCREG, 11, CRTCVAL, 0x0f },	/* cursor end */
  { OUT, CRTCREG, 12, CRTCVAL, 0x0e },	/* start high addr */
  { OUT, CRTCREG, 13, CRTCVAL, 0xb0 },	/* low addr */
  { OUT, CRTCREG, 14, CRTCVAL, 0x16 },	/* cursor high */
  { OUT, CRTCREG, 15, CRTCVAL, 0x30 },	/* cursor low */
  { OUT, CRTCREG, 16, CRTCVAL, 0x9c },	/* vert retrace */
  { OUT, CRTCREG, 17, CRTCVAL, 0x8e },	/* retrace end */
  { OUT, CRTCREG, 18, CRTCVAL, 0x8f },	/* vert end */
  { OUT, CRTCREG, 19, CRTCVAL, 0x28 },	/* offset */
  { OUT, CRTCREG, 20, CRTCVAL, 0x1f },	/* underline */
  { OUT, CRTCREG, 21, CRTCVAL, 0x96 },	/* vert blank */
  { OUT, CRTCREG, 22, CRTCVAL, 0xb9 },	/* end blank */
  { OUT, CRTCREG, 23, CRTCVAL, 0xa3 },	/* crt mode */
  { OUT, CRTCREG, 24, CRTCVAL, 0xff },	/* line compare */

  /* Graphics controller */
  { OUT, GENREG2, 0x00, 0, 0 },
  { OUT, GENREG3, 0x01, 0, 0 },
  { OUT, GRREG, 0, GRVAL, 0x00 },
  { OUT, GRREG, 1, GRVAL, 0x00 },
  { OUT, GRREG, 2, GRVAL, 0x00 },
  { OUT, GRREG, 3, GRVAL, 0x00 },
  { OUT, GRREG, 4, GRVAL, 0x00 },
  { OUT, GRREG, 5, GRVAL, 0x10 },
  { OUT, GRREG, 6, GRVAL, 0x0e },
  { OUT, GRREG, 7, GRVAL, 0x00 },
  { OUT, GRREG, 8, GRVAL, 0xff },

  /* Reset attribute flip/flop */
  { IN, ATTRREG, 0, 0, 0 },

  /* Palette */
  { OUT, PALREG, 0, PALREG, 0x00 },
  { OUT, PALREG, 1, PALREG, 0x01 },
  { OUT, PALREG, 2, PALREG, 0x02 },
  { OUT, PALREG, 3, PALREG, 0x03 },
  { OUT, PALREG, 4, PALREG, 0x04 },
  { OUT, PALREG, 5, PALREG, 0x05 },
  { OUT, PALREG, 6, PALREG, 0x06 },
  { OUT, PALREG, 7, PALREG, 0x07 },
  { OUT, PALREG, 8, PALREG, 0x10 },
  { OUT, PALREG, 9, PALREG, 0x11 },
  { OUT, PALREG, 10, PALREG, 0x12 },
  { OUT, PALREG, 11, PALREG, 0x13 },
  { OUT, PALREG, 12, PALREG, 0x14 },
  { OUT, PALREG, 13, PALREG, 0x15 },
  { OUT, PALREG, 14, PALREG, 0x16 },
  { OUT, PALREG, 15, PALREG, 0x17 },
  { OUT, PALREG, 16, PALREG, 0x08 },
  { OUT, PALREG, 17, PALREG, 0x00 },
  { OUT, PALREG, 18, PALREG, 0x0f },
  { OUT, PALREG, 19, PALREG, 0x00 },

  /* Enable palette */
  { OUT, PALREG, 0x20, 0, 0 },

  /* End of table */
  { DONE, 0, 0, 0, 0 }
};

#endif


#if EGA_STANDARD

/* EGA 640x350 16-color graphics (BIOS mode 0x10).
 */
static REGIO graphics_on[] = {
  /* Reset attr F/F */
  IN, ATTRREG, 0, 0, 0,

  /* Disable palette */
  OUT, PALREG, 0, 0, 0,

  /* Reset sequencer regs */
  OUT, SEQREG, 0, SEQVAL, 0,
  OUT, SEQREG, 1, SEQVAL, 1,
  OUT, SEQREG, 2, SEQVAL, 0x0f,
  OUT, SEQREG, 3, SEQVAL, 0,
  OUT, SEQREG, 4, SEQVAL, 6,

  /* Misc out reg */
  OUT, GENREG1, 0xa7, 0, 0,

  /* Sequencer enable */
  OUT, SEQREG, 0, SEQVAL, 0x03,

  /* Unprotect crtc regs 0-7 */
  OUT, CRTCREG, 0x11, CRTCVAL, 0,

  /* Crtc */
  OUT, CRTCREG, 0, CRTCVAL, 0x5b,
  OUT, CRTCREG, 1, CRTCVAL, 0x4f,
  OUT, CRTCREG, 2, CRTCVAL, 0x53,
  OUT, CRTCREG, 3, CRTCVAL, 0x37,
  OUT, CRTCREG, 4, CRTCVAL, 0x52,
  OUT, CRTCREG, 5, CRTCVAL, 0x00,
  OUT, CRTCREG, 6, CRTCVAL, 0x6c,
  OUT, CRTCREG, 7, CRTCVAL, 0x1f,
  OUT, CRTCREG, 8, CRTCVAL, 0x00,
  OUT, CRTCREG, 9, CRTCVAL, 0x00,
  OUT, CRTCREG, 10, CRTCVAL, 0x00,
  OUT, CRTCREG, 11, CRTCVAL, 0x00,
  OUT, CRTCREG, 12, CRTCVAL, 0x00,
  OUT, CRTCREG, 13, CRTCVAL, 0x00,
  OUT, CRTCREG, 14, CRTCVAL, 0x00,
  OUT, CRTCREG, 15, CRTCVAL, 0x00,
  OUT, CRTCREG, 16, CRTCVAL, 0x5e,
  OUT, CRTCREG, 17, CRTCVAL, 0x2b,
  OUT, CRTCREG, 18, CRTCVAL, 0x5d,
  OUT, CRTCREG, 19, CRTCVAL, 0x28,
  OUT, CRTCREG, 20, CRTCVAL, 0x0f,
  OUT, CRTCREG, 21, CRTCVAL, 0x5f,
  OUT, CRTCREG, 22, CRTCVAL, 0x0a,
  OUT, CRTCREG, 23, CRTCVAL, 0xe3,
  OUT, CRTCREG, 24, CRTCVAL, 0xff,

  /* Graphics controller */
  OUT, GENREG2, 0x00, 0, 0,
  OUT, GENREG3, 0x01, 0, 0,
  OUT, GRREG, 0, GRVAL, 0x00,
  OUT, GRREG, 1, GRVAL, 0x00,
  OUT, GRREG, 2, GRVAL, 0x00,
  OUT, GRREG, 3, GRVAL, 0x00,
  OUT, GRREG, 4, GRVAL, 0x00,
  OUT, GRREG, 5, GRVAL, 0x00,
  OUT, GRREG, 6, GRVAL, 0x05,
  OUT, GRREG, 7, GRVAL, 0x0f,
  OUT, GRREG, 8, GRVAL, 0xff,

  /* Reset attribute flip/flop */
  IN, ATTRREG, 0, 0, 0,

  /* Palette */
  OUT, PALREG, 0, PALREG, 0x00,
  OUT, PALREG, 1, PALREG, 0x01,
  OUT, PALREG, 2, PALREG, 0x02,
  OUT, PALREG, 3, PALREG, 0x03,
  OUT, PALREG, 4, PALREG, 0x04,
  OUT, PALREG, 5, PALREG, 0x05,
  OUT, PALREG, 6, PALREG, 0x06,
  OUT, PALREG, 7, PALREG, 0x07,
  OUT, PALREG, 8, PALREG, 0x38,
  OUT, PALREG, 9, PALREG, 0x39,
  OUT, PALREG, 10, PALREG, 0x3a,
  OUT, PALREG, 11, PALREG, 0x3b,
  OUT, PALREG, 12, PALREG, 0x3c,
  OUT, PALREG, 13, PALREG, 0x3d,
  OUT, PALREG, 14, PALREG, 0x3e,
  OUT, PALREG, 15, PALREG, 0x3f,
  OUT, PALREG, 16, PALREG, 0x01,
  OUT, PALREG, 17, PALREG, 0x00,
  OUT, PALREG, 18, PALREG, 0x0f,
  OUT, PALREG, 19, PALREG, 0x00,

  /* Enable palette */
  OUT, PALREG, 0x20, 0, 0,

  /* End of table */
  DONE, 0, 0, 0, 0
};


/* EGA 80x25 text (BIOS mode 3).
 */
static REGIO graph_off[] = {
  /* Reset attr F/F */
  IN, ATTRREG, 0, 0, 0,

  /* Disable palette */
  OUT, PALREG, 0, 0, 0,

  /* Reset sequencer regs */
  OUT, SEQREG, 0, SEQVAL, 1,
  OUT, SEQREG, 1, SEQVAL, 1,
  OUT, SEQREG, 2, SEQVAL, 3,
  OUT, SEQREG, 3, SEQVAL, 0,
  OUT, SEQREG, 4, SEQVAL, 3,

  /* Misc out reg */
  OUT, GENREG1, 0xa7, 0, 0,

  /* Sequencer enable */
  OUT, SEQREG, 0, SEQVAL, 3,

  /* Crtc */
  OUT, CRTCREG, 0, CRTCVAL, 0x5b,	/* horiz total */
  OUT, CRTCREG, 1, CRTCVAL, 0x4f,	/* horiz end */
  OUT, CRTCREG, 2, CRTCVAL, 0x53,	/* horiz blank */
  OUT, CRTCREG, 3, CRTCVAL, 0x37,	/* end blank */
  OUT, CRTCREG, 4, CRTCVAL, 0x51,	/* horiz retrace */
  OUT, CRTCREG, 5, CRTCVAL, 0x5b,	/* end retrace */
  OUT, CRTCREG, 6, CRTCVAL, 0x6c,	/* vert total */
  OUT, CRTCREG, 7, CRTCVAL, 0x1f,	/* overflows */
  OUT, CRTCREG, 8, CRTCVAL, 0x00,	/* row scan */
  OUT, CRTCREG, 9, CRTCVAL, 0x0d,	/* max scan line */
  OUT, CRTCREG, 10, CRTCVAL, 0x00,	/* cursor start */
  OUT, CRTCREG, 11, CRTCVAL, 0x0f,	/* cursor end */
  OUT, CRTCREG, 12, CRTCVAL, 0x00,	/* start high addr */
  OUT, CRTCREG, 13, CRTCVAL, 0x00,	/* low addr */
  OUT, CRTCREG, 14, CRTCVAL, 0x00,	/* cursor high */
  OUT, CRTCREG, 15, CRTCVAL, 0x00,	/* cursor low */
  OUT, CRTCREG, 16, CRTCVAL, 0x5e,	/* vert retrace */
  OUT, CRTCREG, 17, CRTCVAL, 0x2b,	/* retrace end */
  OUT, CRTCREG, 18, CRTCVAL, 0x5d,	/* vert end */
  OUT, CRTCREG, 19, CRTCVAL, 0x28,	/* offset */
  OUT, CRTCREG, 20, CRTCVAL, 0x0f,	/* underline */
  OUT, CRTCREG, 21, CRTCVAL, 0x5e,	/* vert blank */
  OUT, CRTCREG, 22, CRTCVAL, 0x0a,	/* end blank */
  OUT, CRTCREG, 23, CRTCVAL, 0xa3,	/* crt mode */
  OUT, CRTCREG, 24, CRTCVAL, 0xff,	/* line compare */

  /* Graphics controller */
  OUT, GENREG2, 0x00, 0, 0,
  OUT, GENREG3, 0x01, 0, 0,
  OUT, GRREG, 0, GRVAL, 0x00,
  OUT, GRREG, 1, GRVAL, 0x00,
  OUT, GRREG, 2, GRVAL, 0x00,
  OUT, GRREG, 3, GRVAL, 0x00,
  OUT, GRREG, 4, GRVAL, 0x00,
  OUT, GRREG, 5, GRVAL, 0x10,
  OUT, GRREG, 6, GRVAL, 0x0e,
  OUT, GRREG, 7, GRVAL, 0x00,
  OUT, GRREG, 8, GRVAL, 0xff,

  /* Reset attribute flip/flop */
  IN, ATTRREG, 0, 0, 0,

  /* Palette */
  OUT, PALREG, 0, PALREG, 0x00,
  OUT, PALREG, 1, PALREG, 0x01,
  OUT, PALREG, 2, PALREG, 0x02,
  OUT, PALREG, 3, PALREG, 0x03,
  OUT, PALREG, 4, PALREG, 0x04,
  OUT, PALREG, 5, PALREG, 0x05,
  OUT, PALREG, 6, PALREG, 0x14,
  OUT, PALREG, 7, PALREG, 0x07,
  OUT, PALREG, 8, PALREG, 0x38,
  OUT, PALREG, 9, PALREG, 0x39,
  OUT, PALREG, 10, PALREG, 0x3a,
  OUT, PALREG, 11, PALREG, 0x3b,
  OUT, PALREG, 12, PALREG, 0x3c,
  OUT, PALREG, 13, PALREG, 0x3d,
  OUT, PALREG, 14, PALREG, 0x3e,
  OUT, PALREG, 15, PALREG, 0x3f,
  OUT, PALREG, 16, PALREG, 0x08,
  OUT, PALREG, 17, PALREG, 0x00,
  OUT, PALREG, 18, PALREG, 0x0f,
  OUT, PALREG, 19, PALREG, 0x00,

  /* Enable palette */
  OUT, PALREG, 0x20, 0, 0,

  /* End of table */
  DONE, 0, 0, 0, 0
};

#endif