Subversion Repositories opb_vga_char_display_nodac

 #define VGA_LINES_PER_ROW 75

 unsigned char vga_current_line = 0;

 unsigned char vga_current_row = 0;

 unsigned char VGAcolor;

 PutVGAChar(unsigned char CH, char color)

 {

        VGAcolor = color;

        WriteVGAData(CH);

 }

 WriteVGAData(Data)

 {

        Xuint32 VGAAddress;

        VGAAddress = (((vga_current_row * VGA_LINES_PER_ROW) + vga_current_line) << 18);        // Character location

        VGAAddress = VGAAddress + (VGAcolor << 14);             // 7 is the foreground color white

        VGAAddress = VGAAddress + (Data << 6);          // The character to write

        WriteREG (XPAR_S3E_VGA_CHAR_DEV_0_BASEADDR,USER,0x0,VGAAddress);

        vga_current_line = vga_current_line + 1;

        if (vga_current_line > VGA_LINES_PER_ROW) {

                vga_current_line = 0;

                vga_current_row = vga_current_row + 1;

        }

 }

 WriteVGAString(char*STR, char color)

 {

        int i=0;

        Xuint32 VGAAddress;

        while (STR[i]!='\0')

        {

                VGAcolor = color;

                WriteVGAData(STR[i]);

                i++;

        }

        VGAcolor = color;

        WriteVGAData(0x20);

 }

 //----------------------------------------------------------------------------------

 //

 // Colors are controlled through the lower four bits of the color parameter.

 // Bit zero (the LSB) controls the red portion of the color (on or off).

 // Bit one controls green, bit two controls blue.

 // Bit three, if set, inverts the character.

 //

 //----------------------------------------------------------------------------------

 // Example Call:

 vga_current_row = 0;

 vga_current_line = 0;

 WriteVGAString("Testing VGA Generator Core",0x7);      // White, noninverted