Int 62 Fn 00A7  u - Fgdriver V4.02 - "fg_setbanks" - Set Svga Read And Wr  [V]

   AX = 00A7h
   BX = memory bank from which to read (FFFFh leave unchanged)
   CX = memory bank to which to write (FFFFh leave unchanged)

Note:  the FGDRIVER functions are rearranged with each major release, but
     their parameters do not change (see #3145 at AX=0000h)

See Also: AX=003Bh