Int 62 Fn 002F u - Fgdriver V4.02 - "fg_flicmode" - Get Optimal Video Mo [V]
AX = 002Fh
ES:BX -> 128-byte buffer containing FLI/FLC file header (see AX=002Eh)
Return: AX = optimal 256-color graphics mode number
FFFFh if invalid file header
Note: the FGDRIVER functions are rearranged with each major release, but
their parameters do not change (see #3145 at AX=0000h)
See Also: AX=002Eh,AX=0030h