Replying to a message of Christian Iversen to Darryl Gregorash:
 CI> Where's James Vahn's website ?
www.cet.com/~jvahn
 CI> Is there any int to write a pixel??
INT 10 - VIDEO - WRITE GRAPHICS PIXEL
        AH = 0Ch
        BH = page number
        AL = pixel color
            if bit 7 set, value is XOR'ed onto screen except in 256-color 
modes
        CX = column
        DX = row
Return: nothing
Desc:   set a single pixel on the display in graphics modes
Notes:  valid only in graphics modes
        BH is ignored if the current video mode supports only one page
--- FleetStreet 1.21 NR
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