Int 10 Fn F4  - EGA Register Interface Library - Read Register Set         [V]

   AH = F4h
   CX = number of registers to read (>1)
   ES:BX -> table of records (see below)

Return: register values in table filled in

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

See Also: AH=F0h,AH=F2h,AH=F5h

Format of entries in table of register records:
Offset Size    Description
 00h   WORD    group index
       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)
          30h Graphics 1 Position register 3CCh
          38h Graphics 2 Position register 3CAh
 02h   BYTE    register number (0 for single registers)
 03h   BYTE    register value