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AH = 20h AL = port parameters (see #00300 at AH=00h"SERIAL") DX = port number (0-3)
Return:
AH = status 00h successful 41h no such port 64h monitor mode already active
See Also:
AH=00h"SERIAL" - AH=04h"MultiDOS" - AH=21h"MultiDOS" -
Category:
Serial I/O
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Int 14h
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M
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