Int 14/AH=09h

AH = 09h
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)

Return:
AH = status
00h successful
FFh error

See Also: AH=08h"Digiboard" - AH=0Ah"Digiboard" - AH=10h"Digiboard"

Category: Serial I/O - Int 14h - D