Int 16/AX=4504h

Shamrock Software EMAIL - CHECK FOR USER FUNCTION COMMAND-WORD

AX = 4504h
DL = port number (01h = COM1)
ES:BX -> 80-byte buffer for ASCIZ user input line

Return:
AX = 4D00h if EMAIL installed on specified port
DL = flags
bit 0:
User function supported (always set)
bit 1:
User entered user-function command word
if DL bit 1 set,
ES:BX buffer contains line entered by user which begins with
the defined command word and has been converted to all
caps

Note: Caller must process the returned commandline and invoke AX=4505h within five seconds with the result of that processing

See Also: AX=4503h - AX=4505h

Category: Electronic Mail - Int 16h - S

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