Int 10 Fn F2  - EGA Register Interface Library - Read Register Range       [V]

   AH = F2h
   CH = starting register number
   CL = Number of registers (>1)
   DX = group index
        00h CRTC (3B4h mono modes, 3D4h color modes)
        08h Sequencer 3C4h
        10h Graphics Controller 3CEh
        18h Attribute Controller 3C0h
   ES:BX -> buffer, CL bytes

Note:  the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2
     compatibility box, and others

See Also: AH=F0h,AH=F3h