INT 10 - EGA Register Interface Library - DEFINE DEFAULT REGISTER TABLE
        AH = F7h
        DX = port number
           Pointer/data chips
              00h CRTC (3B4h mono modes, 3D4h color modes)
              08h Sequencer 3C4h
              10h Graphics Controller 3CEh
              18h Attribute Controller 3C0h
           Single registers
              20h Miscellaneous Output register 3C2h
              28h Feature Control register (3BAh mono modes, 3DAh color modes)
              30h Graphics 1 Position register 3CCh
              38h Graphics 2 Position register 3CAh
        ES:BX -> table of one-byte entries, one byte to be written to each
                 register
Note:   the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2
          compatibility box, and others