Int 6B/AX=0100h

AX = 0100h
CX = length of buffer
ES:BX -> buffer

Return:
CX = number of bytes read

Note: Also supported by TelAPI and NPC NCSI; for TelAPI, nonzero values in AL specify a connection ID

See Also: AX=0000h - AH=19h - INT 14/AH=18h - INT 14/AH=E

Category: Serial I/O - Int 6Bh - N