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AH = 20h CX = channel number (00h COM1, 01h COM2, ...) DS:BX -> buffer with communications parameter (see #00347)
Return:
AX = status 0000h successful 0001h invalid parameter
See Also: AH=1Eh"HUNTER" - AH=21h"HUNTER"
Category: Serial I/O - Int 14h - H

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