INT 62 u - FGDRIVER v1.10 - "FG_SETDACS" - SET VIDEO DAC CONTENTS
        AX = 00A5h
        CX = number of DAC registers to set (0001h to 0100h)
        DX = starting DAC register number (0000h to 00FFh)
        ES:BX -> buffer containing DAC red/green/blue triples
Notes:  the register number wraps back to zero after FFh
        this call has no effect in text modes or graphics modes below 11h
SeeAlso: AX=00A4h