Int E0/CL=04h

CL = 04h
DL = BYTE to write

Return:
Nothing
may destroy SI,DI,DH???

Note: If another process owns AUX, this call blocks until the device becomes available

See Also: INT 21/AH=04h - INT E0/CL=03h - INT E0/CL=08h - Category: Other Operating Systems - Int E0h - D