INT 10 - VIDEO - READ BLOCK OF DAC REGISTERS (VGA/MCGA)

	AX = 1017h
	BX = starting palette register
	CX = number of palette registers to read
	ES:DX -> buffer (3 * CX bytes in size) (see also AX=1012h)
Return: buffer filled with CX red, green and blue triples
SeeAlso: AX=1012h,AX=1015h,INT 62/AX=00A4h