INT 10 - VIDEO - AX PC - READ CHARACTER

	AX = 5101h
	BH = character width in bits
	BL = character height
	DX = character code (DH = 00h if 8-bit character)
	ES:BP -> buffer for character bitmap
Return: AL = status (00h successful, 01h failed)
SeeAlso: AH=09h,AX=5100h