vgainit.c

开放源码实时操作系统源码.

  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, 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,
#if 0  
  // bartv: the original value 0x00 appeared to leave all planes disabled.
  OUT, GRREG, 1, GRVAL, 0x00,
#else
  OUT, GRREG, 1, GRVAL, 0x0F,
#endif  
  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